Page 1 ,QWURGXFWLRQ +DUGZDUH DQG &RQQHFWLRQV ,QLWLDO ,QVSHFWLRQV SIPROTEC Š 6,3527(& 'HYLFHV Distance Protection 7SA6 &RQILJXUDWLRQ V4.0 )XQFWLRQV Manual &RQWURO 'XULQJ 2SHUDWLRQ ,QVWDOODWLRQ DQG &RPPLVVLRQLQJ 5RXWLQH &KHFNV DQG 0DLQWHQDQFH 7HFKQLFDO 'DWD $SSHQGL[ $SSHQGL[ C53000-G1176-C133-1...
Page 2: C53000-G1176-C133
Siemens Manual No. C53000-G1176-C133-1...
Page 3 (EMC Council Directive 89/336/EEC) and concerning electrical equip- ment for use within specified voltage limits (Low-voltage directive 73/23 EEC). Conformity is proved by tests conducted by Siemens AG in accordance with Article 10 of the Council Directive in agreement with the generic standards EN 50081 and EN 50082 (for EMC directive) and the standards EN 60255-6 (for low-voltage directive).
Page 4 Preface DANGER indicates that death, severe personal injury or substantial property damage will result if proper precautions are not taken. Warning indicates that death, severe personal injury or substantial property damage can result if proper precautions are not taken. Caution indicates that minor personal injury or property damage can result if proper precau- tions are not taken.
Page 5 Preface 3DUDPHWHU RSWLRQV, i.e. possible settings of text parameters, which may appear word-for-word in the display of the device or on the screen of a personal computer ® (with operation software DIGSI 4), are written in italic style, additionally. “$QQXQFLDWLRQV”, i.e. designators for information, which may be output by the relay or required from other devices or from the switch gear, are marked in a monospace type style in quotes.
Page 6 Registered trademarks Subject to technical alteration. SIPROTEC, SINAUT, SICAM, and DIGSI are registered trade- marks of SIEMENS AG. Other names and terms can be trade- marks the use of which may violate the rights of thirds. 7SA6 Manual C53000-G1176-C133-1...
Page 7: Table Of Contents
Table of Contents Introduction............................1-1 Overall Operation ........................ 1-2 Applications ......................... 1-5 Features ..........................1-7 Scope of Functions......................1-8 Hardware and Connections ......................2-1 Version of 7SA6 for Panel Flush Mounting (Cubicle Mounting) .......... 2-2 2.1.1 Housing ..........................2-2 2.1.2 Screw Terminal Connections.....................
Page 8 3.3.1 Operation Using the Operator Control Panel............... 3-5 ® 3.3.2 Operation Using DIGSI 4....................3-8 Storage ..........................3-13 ® SIPROTEC 4 Devices ........................4-1 General ..........................4-2 4.1.1 Protection and Control ......................4-2 4.1.2 Communication........................4-3 4.1.3 Settings..........................4-5 4.1.4 Operations ...........................
Page 9 5.2.3 Control Commands for Switching Devices ................ 5-13 5.2.4 Establishing Information Properties................... 5-18 5.2.5 Performing Configuration....................5-26 5.2.6 Transferring Metered Values ..................... 5-33 5.2.7 Settings for Contact Chatter Blocking................5-35 Creating User Defined Functions with CFC............... 5-37 Establishing a Default Display ................... 5-46 Draft of a Feeder Control Display ..................
Page 10 6.3.1 Method of Operation ......................6-71 6.3.2 Applying the Function Parameter Settings ................ 6-73 6.3.3 Settings..........................6-74 6.3.4 Information Overview......................6-74 Teleprotection Schemes with Distance Protection ............6-75 6.4.1 Method of Operation ......................6-76 6.4.1.1 Permissive Underreach Transfer Trip with Pick-up (PUTT)..........6-76 6.4.1.2 Permissive Underreach Transfer Trip with Zone Acceleration Z1B (PUTT) ......
Page 11 Time Overcurrent Protection ................... 6-141 6.9.1 Method of Operation......................6-142 6.9.2 Applying the Function Parameter Settings ..............6-148 6.9.3 Settings ........................... 6-153 6.9.4 Information Overview....................... 6-154 6.10 High-Current Switch-On-To-Fault Protection..............6-157 6.10.1 Method of Operation......................6-157 6.10.2 Applying the Function Parameter Settings ..............6-158 6.10.3 Settings ...........................
Page 12 6.17 Thermal Overload Protection................... 6-245 6.17.1 Method of Operation ......................6-245 6.17.2 Applying the Function Parameter Settings ..............6-246 6.17.3 Settings..........................6-248 6.17.4 Information Overview....................... 6-248 6.18 Analog Outputs ........................ 6-249 6.18.1 Method of Operation ......................6-249 6.18.2 Applying the Function Parameter Settings ..............6-249 6.18.3 Settings..........................
Page 13 Control During Operation ........................ 7-1 Read-out of Information....................... 7-2 7.1.1 Messages ..........................7-2 7.1.1.1 Output of Messages ......................7-2 7.1.1.2 Event Log (Operating Messages)..................7-5 7.1.1.3 Trip Log (Fault Messages)....................7-6 7.1.1.4 Earth Fault Messages......................7-9 7.1.1.5 Saving and Erasing the Messages ..................7-11 7.1.1.6 General Interrogation ......................
Page 14 8.1.3.5 Reassembly of Device ....................... 8-35 Checking the Connections....................8-36 8.2.1 Data Connections ......................8-36 8.2.2 Checking Power Plant Connections .................. 8-38 Commissioning ........................8-40 8.3.1 Testing mode and transmission blocking................8-41 8.3.2 Checking the System (SCADA) Interface ................8-41 8.3.3 Checking the Binary Inputs and Outputs ................
Page 15 Technical Data ..........................10-1 10.1 General Device Data ......................10-2 10.1.1 Analog Inputs ........................10-2 10.1.2 Power Supply ........................10-2 10.1.3 Binary Inputs and Outputs ....................10-3 10.1.4 Communications Interfaces ....................10-5 10.1.5 Electrical Tests ........................10-7 10.1.6 Mechanical Stress Tests ....................10-9 10.1.7 Climatic Stress Tests.......................
Page 16 A.2.1 Panel Flush Mounting or Cubicle Mounting ...............A-11 A.2.2 Panel Surface Mounting ....................A-19 A.2.3 Housing for Mounting with Detached Operatior Panel............A-28 Connection Examples......................A-34 Preset Configurations ......................A-42 Protocol Dependent Functions ..................A-47 Appendix............................B-1 Settings..........................B-2 List of Information ......................B-19 Measured Values.......................B-54 Index............................... i 7SA6 Manual C53000-G1176-C133-1...
Page 17: Introduction
Introduction ® The SIPROTEC 4 devices 7SA6 are introduced in this chapter. An overview of the devices is presented in their application, characteristics, and scope of functions. Overall Operation Applications Features Scope of Functions 7SA6 Manual C53000-G1176-C133-1...
Page 18: Overall Operation
Introduction Overall Operation ® The numerical Distance Protection SIPROTEC 7SA6 is equipped with a powerful 32 Bit microprocessor. This provides fully numerical processing of all functions in the device, from the acquisition of the measured values up to the output of commands to the circuit breakers.
Page 19 Introduction A voltage measuring input is provided for each phase–earth voltage. A further voltage input (U ) may optionally be used to measure either the displacement voltage (e–n– voltage) or any other voltage U (for overvoltage protection). The analogue signals are then routed to the input amplifier group IA.
Page 20 Introduction A battery backed clock is always provided and can be synchronized via a synchronization signal with IRIG-B (GPS via satellite receiver) or DCF 77. Additional interface modules provide the option to carry out further communication protocols. Power Supply The 7SA6 can be supplied with any of the common power supply voltages. Transient dips of the supply voltage which may occur during short-circuit in the power supply system, are bridged by a capacitor (see Technical Data, Sub-section 10.1.2).
Page 21: Applications
Introduction Applications ® The numerical Distance Protection SIPROTEC 7SA6 is a fast and selective protection device for overhead lines and cables with single- and multi-ended infeeds in radial, ring or any type of meshed systems with insulation ratings. The system starpoint can be earthed, resonant-earthed or isolated.
Page 22 Introduction For the rapid location of the damage to the line after a short-circuit, a fault locator is integrated which also may compensate for the influence of a parallel line and load. Messages and A series of operating messages provides information about conditions in the power Measured Values;...
Page 23: Features
Introduction Features • Powerful 32-bit microprocessor system. • Complete digital processing of measured values and control, from the sampling and digitilization of measured values to close and trip decisions for the circuit breaker. • Complete galvanic and reliable separation between the internal processing circuits of the 7SA6 and the external measurement, control, and DC supply circuits because of the design of the analog input transducers, binary inputs and outputs, and the DC converters.
Page 24: Scope Of Functions
Introduction Scope of Functions ® The numerical Distance Protection SIPROTEC 7SA6 has the following functions (sometimes dependent on the order variant): • Protection for all types of short-circuit in systems with earthed, resonant-earthed or Distance Protection isolated star point; • Different pickup schemes enable the user to adapt the distance protection system to different network conditions and user’s requirements: overcurrent pickup, voltage and angular-controlled pickup or impedance starting (with polygonal angle-dependent characteristeric) can be selected;...
Page 25 Introduction • Differential connections (release or blocking schemes, with separate overreach zone or directional pickup) • Pilot protection / reverse interlocking (with direct voltage for local connections or extremely short lines) • All lines are suited for 2 or 3 ends; •...
Page 26 • Stub protection: additional stage for fast tripping of faults between the current transformer and circuit breaker (when the isolator switching status feed back is available); particularly suited to sub-stations with circuit breaker arrangements. • Fast tripping for switch-on-to-fault conditions; High Current Fast Switch-on-to-Fault •...
Page 27 Introduction Voltage Overvoltage and undervoltage detection with different stages Protection • Two overvoltage stages for the phase-earth voltages, with common time delay (optional) • Two overvoltage stages for the phase-phase voltages, with common time delay • Two overvoltage stages for the symmetrical positive sequence system of the voltages, with a time delay each •...
Page 28 Introduction • Time delays and measured value set point interrogation. • Switching on and off switchgears manually via the local control keys, configurable Command ® Processing function keys, via the system interface (e.g. of the SICAM or LSA) or via the operator interface (by means of personal computers and the operating program ®...
Page 29: Hardware And Connections
Hardware and Connections This chapter describes the construction and connection of the 7SA6. The different housing versions and available termination techniques are described. The recommended and permitted data for the wiring is stated and suitable accessories and tools are given. Version of 7SA6 for Panel Flush Mounting (Cubicle Mounting) Version of 7SA6 for Panel Surface Mounting 2-21...
Page 30: Version Of 7Sa6 For Panel Flush Mounting (Cubicle Mounting)
Hardware and Connections Version of 7SA6 for Panel Flush Mounting (Cubicle Mounting) ® The numerical Distance Protection SIPROTEC 7SA6 for panel and cubicle flush mounting is enclosed in a 7XP20 housing. 3 housing sizes are available, namely (of 19 inch). Housing size is provided with a four-line display.
Page 31 Hardware and Connections View of Front Panel with Four-Line Display (Housing Size SIPROTEC SIEMENS ERROR 7SA610 H6DIÃH@IVÃÃÃÃÃÃÃÃÃÃÃÃ # 6ˆpvh‡v‚Ã Hrh†ˆ…r€r‡Ã MENU ENTER Annunciation Meas. Val. Trip log Figure 2-1 Front view of a 7SA61 (housing size ) for panel flush mounting or cubicle...
Page 32 Hardware and Connections 7. 9-pin female D-subminiature connector ® This serial interface is for the connection of a local PC running DIGSI 8. LED key This key has the dual purpose of resetting latched LEDs and the latched contacts of output relays, as well as testing all of the LEDs. 9.
Page 33 View of Front Panel The significance of the operating and display elements is the same as explained after with Four-Line Figure 2-1. However, 14 LEDs are freely configurable. Display (Housing Size SIPROTEC SIEMENS ERROR 7SA611 H6DIÃH@IVÃÃÃÃÃÃÃÃÃÃÃÃ # 6ˆpvh‡v‚Ã Hrh†ˆ…r€r‡Ã MENU...
Page 34 View of Front Panel The significance of the operating and display elements is the same as explained with Four-Line after Figure 2-1. However, 14 LEDs are freely configurable. Display (Housing Size SIPROTEC SIEMENS ERROR 7SA6 H6DIÃH@IVÃ # 6ˆpvh‡v‚ Hrh†ˆ…r€r‡...
Page 35 Hardware and Connections View of Front Panel with Graphic SIPROTEC SIEMENS Display ERROR 7SA631 (Housing Size Tpuy‚††ƒyh‡“ MENU Ã6 ! ÃxW 6i“rvtÃr…qrÃ€v‡ÃA# CTRL ENTER Annunciation Local Meas. Val. Remote Trip log Test Normal Figure 2-4 Front view of a 7SA63, housing size...
Page 36 13. Coverings for the screws that secure the front panel. View of Front Panel The significance of the operating and display elements is the same as explained after with Graphic Figure 2-4. Display (Housing Size SIPROTEC SIEMENS ERROR 7SA632 Schlossplatz MENU 1000 A 21 kV Abzweig erden mit F4...
Page 37 Hardware and Connections View of Rear Panel Figure 2-6 shows a simplified view of the rear panel of a device with screw-type termi- (Housing Size nals. Rear view of a (terminal arrangement Figure 2-6 7SA6, housing size example only) 7SA6 Manual C53000-G1176-C133-1...
Page 38 Hardware and Connections View of Rear Panel Figure 2-7 is a simplified view of the rear panel of the version of the device with screw- (Housing Size type terminals and optical fibre ports for the service interface at location B. Rear view of a (terminal arrangement Figure 2-7...
Page 39: Screw Terminal Connections
Hardware and Connections 2.1.2 Screw Terminal Connections The following must be distinguished in the case of connection via screw terminals: terminal plugs for voltage connections and terminal plugs for current connections. The terminal screws have a slot head for tightening or loosening with a flat screw driv- er, sized 6 x 1 mm.
Page 40 Hardware and Connections 8 terminal Figure 2-11 Terminal block of screw terminals for current connections — rear view The correlation between terminals and connection numbers is the same for both the current connections and the voltage connections. Compare Figures 2-10 and 2-11. In the terminal block for current connections, the terminals are grouped in pairs.
Page 41 Hardware and Connections Plug the connection end of the line into the plug-in terminal in such a way that it can be tightened correctly by the terminal screw. Strip 9 to 10 mm of the insulation on solid conductors Maximum tightening torque: 1.8 Nm (1.3 ft-lb or 16 in-lb). Connections to Ring-type and fork-type lugs may be used.
Page 42 Hardware and Connections Covering Caps Terminal covering caps are available for the screw terminal modules, to increase the protection of personnel against hazardous voltages (degree of protection against ac- cess to dangerous parts) on the terminal modules. The degree of protection is in- creased from the standard “back of the hand protection”...
Page 43: Connections To Plug-In Terminals
Hardware and Connections 2.1.3 Connections to Plug-In Terminals Plug-in terminals are only available for voltage connections. Current connections are made with screw terminals on all 7SA6. Terminal Blocks for There are two versions of plug-in terminal blocks. They are shown in Figure 2-14. Voltage Connections 18 terminal...
Page 44 Hardware and Connections inside the 7SA6. Each common group can, for example, be used for signal multiplica- tion or as a common point for a signal (independent of the signals on the pin “a” termi- nals). Depending on the version of the terminal block, 18 or 12 common connections are available.
Page 45 Hardware and Connections Figure 2-17 2-pin connector and 3-pin connector Ordering information for the pin connectors is provided in Section 1.1 of Appendix A. The design of the pin connectors is such that only correct connections can be made. For example, the design of the 2-pin connector allows connection only to pins “a” and “b”.
Page 46: Connections To Optical Communication Interfaces
Hardware and Connections After the wires are crimped, the contacts are pressed into the terminals of the connec- tor until they snap into place.. Note: Stress relief for individual pin connector must be provided with cable ties. Stress relief must also be provided for the entire set of cables, e.g., cable ties. The following separation tool is needed to remove the contacts from the pin connec- tors: Type: 725840–1 from AMP Corp.
Page 47: Connections To Electrical Communication Interfaces
Hardware and Connections 2.1.5 Connections to Electrical Communication Interfaces Electrical 9-pin D-subminiature female socket connectors are provided for all electrical commu- Communication nication interfaces of the 7SA6. The connector is illustrated in Figure 2-19. The pin as- Interfaces signments are described in Sub-section 8.2.1. Operating Interface Time Synchronization on the Front Side...
Page 48: Connections To Analog Outputs
Hardware and Connections 2.1.6 Connections to Analog Outputs Connections 9-pin D-subminiature female socket connectors are provided for all analog outputs of the 7SA6. The connector is illustrated in Figure 2-20. The pin assignments are de- scribed in Subsection 8.2.1. Figure 2-20 9 pin D-subminiature connectors Connections to Standard 9-pin D-subminiature plug connectors per MIL–C–24308 and DIN 41652...
Page 49: Version Of 7Sa6 For Panel Surface Mounting
Hardware and Connections Version of 7SA6 for Panel Surface Mounting ® The numerical Distance Protection SIPROTEC 7SA6 for surface mounting is en- closed in a 7XP20 housing. 2 housing versions are available, (of 19 inch). The device is fitted into a surface mounting housing. 2.2.1 Housing The housing consists of a rectangular tube with a rear plate and a front cover.
Page 50 Hardware and Connections View of Front Panel with Four-Line Display (Housing Size SIPROTEC SIEMENS ERROR 7SA610 H6DIÃH@IVÃÃÃÃÃÃÃÃÃÃÃÃ # 6ˆpvh‡v‚Ã Hrh†ˆ…r€r‡Ã MENU ENTER Annunciation Meas. Val. Trip log 9 L+ L- 13 14 15 17 18 19 20 21 22 23 24 25 26...
Page 51 Hardware and Connections function keys are programmable, and may be used to execute control functions such as closing or tripping circuit breakers. Next to the keypad, a labeling strip is provided on which the user-specified key functions may be written. 7.
Page 52 View of Front Panel The significance of the operating and display elements is the same as explained after with Four-Line Figure 2-21. However, 14 LEDs are freely configurable. Display (Housing Size SIPROTEC SIEMENS ERROR 7SA611 H6DIÃH@IVÃÃÃÃÃÃÃÃÃÃÃÃ # 6ˆpvh‡v‚Ã Hrh†ˆ…r€r‡Ã MENU...
Page 53 Hardware and Connections View of Front Panel The significance of the operating and display elements is the same as explained after with Four-Line Figure 2-21. Display (Housing Size SIPROTEC SIEMENS ERROR 7SA612 H6DIÃH@IV # 6ˆpvh‡v‚ Hrh†ˆ…r€r‡ MENU ENTER Annunciation Meas.
Page 54 Hardware and Connections View of Front Panel with Graphic Display (Housing Size SIPROTEC SIEMENS ERROR 7SA631 Tpuy‚††ƒyh‡“ MENU Ã6 ! ÃxW 6i“rvtÃr…qrÃ€v‡ÃA# CTRL ENTER Annunciation Local Meas. Val. Remote Trip log Test Normal 11 12 13 14 L+ L- 17 18 19 20 21...
Page 55 Hardware and Connections tories, for displaying the lists of the event logs (F1), the operational measured val- ue (F2) and the trip logs of the last fault (F3). The key F4 is not allocated. All func- tion keys are freely configurable. Next to the keypad, a labeling strip is provided on which the user-specified key functions may be written.
Page 56: Screw Terminal Connections
Hardware and Connections View of Front Panel The significance of the operating and display elements is the same as explained after with Graphic Figure 2-24. Display (Housing Size SIPROTEC SIEMENS ERROR 7SA632 Tpuy‚††ƒyh‡“ MENU Ã6 ! ÃxW 6i“rvtÃr…qrÃ€v‡ÃA# CTRL ENTER...
Page 57: Connections To Optical Communication Interfaces
Hardware and Connections Connections to Solid conductor or stranded wire with lugs can be used. Terminals The following specifications must be observed: Direct cable connections: solid or stranded conductor with connector sleeve conductor with cross-section of 0.5 mm to 7 mm (AWG 20 to 9).
Page 58 Hardware and Connections , channel D and E Housing for optical communication interfaces Housing for optical communication interfaces channel B and C Figure 2-26 Side view of 7SA6, panel surface mounting, possible optical communication in- terfaces A table indicating the available channel designations B to E is printed onto the inclined housing.
Page 59 Hardware and Connections The device version with a Profibus interface RS 485 (electrical) has a DSUB socket instead of the optical communication interface B in the inclined housing located on the bottom side of the device (see Figure 2-28). Channel C Channel B Channel E Channel D...
Page 60 Hardware and Connections Channel C Channel B Channel C Channel B Channel E Channel D Channel E Channel D Plastic Plugs Figure 2-29 Inclined housing with 9-pin DSUB socket Connections to Standard 9-pin D-subminiature plug connectors per MIL–C–24308 and DIN 41652 Electrical can be used.
Page 61: Connections To Analog Outputs
Hardware and Connections 2.2.4 Connections to Analog Outputs Connections 9-pin D-subminiature female socket connectors are provided for all analog outputs of the 7SA6. The connector is illustrated in Figure 2-30. The pin assignments are de- scribed in Subsection 8.2.1. Channel C Channel B Channel E Channel D...
Page 62: Version Of 7Sa6 With Detached Operator Panel
Hardware and Connections Version of 7SA6 with Detached Operator Panel ® The numerical Distance Protection SIPROTEC 7SA6 with detached operator panel is intended for mounting it into a low-voltage box. It consists of a device in a 7XP20 housing for surface mounting and a detached operator panel for mounting onto a mounting plate.
Page 63 View of Device and The following figure shows an 7SA6 device with detached operator panel, its housing Operator Control with plug-in terminals and communication cable. Element (Housing Size SIPROTEC SIEMENS ERROR 7SA641 Schlossplatz MENU 1000 A 21 kV Abzweig erden mit F4...
Page 64: Screw Terminal Connections
View of Device and The following figure shows an 7SA6 device with detached operator panel, its housing Operator Control with plug-in terminals and communication cable. Element (Housing Size SIPROTEC SIEMENS ERROR 7SA642 Schlossplatz MENU 1000 A 21 kV Abzweig erden mit F4...
Page 65 Hardware and Connections 18 terminal 12 terminal Figure 2-33 Connection plug module with screw terminals for voltage connections — rear view The following figure shows an example of the allocation of an individual screw terminal to its terminal number. connection terminal 1 connection terminal 2 Figure 2-34 Allocation of screw terminal to terminal number —...
Page 66 Hardware and Connections The correlation between terminals and connection numbers is the same for both the current connections and the voltage connections. Compare Figures 2-10 and 2-11. In the terminal block for current connections, the terminals are grouped in pairs. Two neighboring terminals such as terminals 5 and 6 form one pair.
Page 67 Hardware and Connections Direct cable connections: solid or stranded conductor with connector sleeve; conductor with cross-section of 2.6 mm to 3.3 mm (AWG 14 to 12). Plug the connec- tion end of the line into the plug-in terminal in such a way that it can be tightened cor- rectly by the terminal screw.
Page 68 Hardware and Connections Covering cap for Covering cap for 18 terminal voltage 12 terminal voltage connection terminal block or 8 terminal current connection terminal block Figure 2-37 Covering caps for terminal blocks with screw terminals 2.3.3 Connections to Plug-In Terminals Plug-in terminals are only available for voltage connections.
Page 69 Hardware and Connections Plug-in terminal 1 Plug-in terminal 2 Figure 2-39 Correlation between plug-in terminals and connection numbers/letters Each plug-in terminal forms a complete set of connections that consists of three pins arranged as follows: Pin a: Signal connection Pin b: Common connection Pin c: Shielding connection...
Page 70: Connections To Plug-In Terminals
Hardware and Connections 12 terminal 18 terminal Signal connection Common connection Shielding connection Common connections, group 1 looped together Common connections, group 2 looped together Shielding connections looped together Figure 2-40 Schematic diagram of the plug-in terminal blocks Connections to Connections to plug-in terminals are made with pin connectors.
Page 71: Connections To Optical Communication Interfaces
Hardware and Connections Control wires are connected to contacts of the pin connectors. Wires with 0.5 mm 2.5 mm diameter (AWG 20 to 14) can be accommodated. Use only flexible copper control wire! The crimp connector required depends on the diameter of the conductor being used. Section 0.5 mm to 1.0 mm e.g.
Page 72 Hardware and Connections 2 channel 1 channel 1 channel Figure 2-42 Optical communication interfaces with protective caps Connections to Optical connector type: ST–connector Optical Communication Fibre type: Multimode graded-index (“G”) optical fibre Interfaces with G50/125 µm, ST-connector G62.5/125 µm, G100/140 µm λ...
Page 73: Connections To Electrical Communication Interfaces
Hardware and Connections 2.3.5 Connections to Electrical Communication Interfaces Electrical 9-pin D-subminiature female socket connectors are provided for all electrical commu- Communication nication interfaces of the 7SA6. The connector is illustrated in Figure 2-19. The pin as- Interfaces signments are described in Sub-section 8.2.1. Operator Interface Time Synchronization on the Front Side...
Page 74: Connections To Analog Outputs
Hardware and Connections 2.3.6 Connections to Analog Outputs Connections 9-pin D-subminiature female socket connectors are provided for all analog outputs of the 7SA6. The connector is illustrated in Figure 2-44. The pin assignments are de- scribed in Subsection 8.2.1. Figure 2-44 9 pin D-subminiature connectors Connections to Standard 9-pin D-subminiature plug connectors per MIL–C–24308 and DIN 41652...
Page 75: Initial Inspections
Initial Inspections This Chapter describes the first steps that should be taken upon receiving the ® SIPROTEC 4 7SA6. Unpacking and re-packing is explained. Visual and electrical checks that are appropriate for initial inspection are discussed. The electrical tests include navigating through the operating menus of the device using the operator control panel on the front of the device, and the operator control ®...
Page 76: Unpacking And Repacking
Initial Inspections Unpacking and Repacking The 7SA6 is packaged at the factory to meet the requirements of IEC 60255–21. Unpacking and packing must be done with usual care, without using force, and with appropriate tools. Visually check the device immediately upon arrival for correct mechanical condition.
Page 77: Inspections Upon Receipt
Initial Inspections Inspections upon Receipt 3.2.1 Inspection of Features and Ratings Ordering Number Verify that the 7SA6 has the expected features by checking the complete ordering number with the ordering number codes given in Sub-section A.1 of the Appendix. Also check that the required and expected accessories are included with the device. The ordering number of the device is on the nameplate sticker attached to the top of the housing.
Page 78 Initial Inspections After no more than 15 seconds, the start-up messages must vanish from the display (in which the complete ordering number, the version of firmware implemented, and the factory number are shown), and the default display must appear. Depending on the assignment of the LEDs, some indicators may light up during and after power-up.
Page 79: User Interface
Initial Inspections User Interface 3.3.1 Operation Using the Operator Control Panel Operator Control The device has a hierarchically structured operating tree, within which movements Panel and actions are made using the keys and the MENU ENTER CTRL keys on the front panel. The brief discussions below illustrate the navigation techniques using the integrated operations in the operator control panel.
Page 80 Initial Inspections 6(783(;75$6 'DWH7LPH ²! &ORFN 6HWXS ²! 6HULDO 3RUWV ²! 'HYLFH,' ²! !0/)%9HUVLRQ ²! 0/)%9(56,21 &RQWUDVW ²! 0/)% ;<²(3 +$ %)²1U 0/)%9(56,21 )LUPZDUH %RRWV\VWHP Figure 3-2 Display of device-specific data (example) Viewing Measured To view the measured values: Values key.
Page 81 Initial Inspections Setting the Display If the image in the integrated LCD does not have satisfactory contrast, adjustments Contrast can be made. A stronger contrast serves, among other purposes, to improve the readability of the image from an angle. With increasing numbers, the contrast is increased and the picture gets darker.
Page 82: Operation Using Digsi ® 4
Initial Inspections ® 3.3.2 Operation Using DIGSI ® ® DIGSI 4 User DIGSI 4 has the typical PC application Windows operating environment to guide the Interface user. The software has a modern, intuitive, user-interface. Further details are found in ® Section 4, as well as in the DIGSI 4 handbook “Device Configuration”.
Page 83 Initial Inspections Figure 3-5 Window with selection of Plug and Play Enter the designation of the PC serial interface (COM 1,2, 3, or 4) and select in the dialogue box under )UDPH the transfer format, to be used in making the connection. Click on 2..
Page 84 Initial Inspections ® Figure 3-7 DIGSI 4 — online initial screen — example Viewing Measured As an example the procedure for viewing the measured values is described. Values Double click on 0HDVXUHPHQW in the navigation window (left). Double click on the subdirectory 6HFRQGDU\ 9DOXHV in the navigation window. Click on 2SHUDWLRQDO YDOXHV VHFRQGDU\.
Page 85 Initial Inspections ® Figure 3-9 DIGSI 4 — Table of secondary operating measured values – example Viewing The read-out of operating messages is described to serve as an additional example. Operational Double click on $QQXQFLDWLRQ in the navigation window. Messages Click on (YHQW /RJ in the function selection.
Page 86 Initial Inspections Setting Date and To enter the date and time: Time Click on 'HYLFH in the menu bar. See Figure 3-11. Select 6HW &ORFN. ® 4 — Selection of the option 6HW &ORFN - example Figure 3-11 DIGSI The dialog field 6HW FORFN GDWH LQ GHYLFH opens.
Page 87: Storage
Initial Inspections Storage If the device is to be stored, note: ® SIPROTEC 4 devices and associated assemblies should be stored in dry and clean rooms, with a maximum temperature range of –25° C to +55° C (–12° F to 131° F). See Sub-section 10.1.7 under Technical Data.
Page 88 7SA6 Manual C53000-G1176-C133-1...
Page 89 ® SIPROTEC 4 Devices ® This chapter provides an overview of the family of SIPROTEC 4 devices and the in- tegration of the devices into power plants and substation control systems. Principle procedures are introduced for setting the devices, controlling primary equipment with the devices, and performing general operations with the devices.
Page 90: General
® SIPROTEC 4 Devices General ® The SIPROTEC 4 family is an innovative product series of numerical protective and control devices with open communication interfaces for remote control and remote setting, ergonomically designed operator panels, and highly flexible functionality. 4.1.1 Protection and Control The devices utilize numerical measuring techniques.
Page 91: Communication
® SIPROTEC 4 Devices 4.1.2 Communication ® SIPROTEC 4 devices are completely suited for the requirements of modern commu- nication technology. They have interfaces that allow for integration into higher-level control centres, and user friendly operation through an on-site PC or via a modem con- nection.
Page 92 ® SIPROTEC 4 Devices To Network Control Centers Operation and Observation IEC60870-5-101 SICAM WinCC DIGSI 4 DCF, GPS Time Synchronization SICAM SC IEC60870-5-103 Profibus FMS Feeder Devices Profibus DP, DNP3.0 Figure 4-1 Integration of feeder devices in the SICAM substation control system — example In the sample configuration in Figure 4-1, data transmitted from the feeder devices can be processed in the sub-station control device SICAM SC, displayed at the operating and observation station SICAM WinCC, and transferred by the remote terminal unit...
Page 93: Settings
® SIPROTEC 4 Devices ® The PROFIBUS DP protocol facilitates the connection of SIPROTEC –devices to SPS-based process control systems (e.g. SIMATIC S5/S7). The protocols DNP3.0 and MODBUS ASCII/RTU allow the connection to a wide range of control systems by other manufacturers.
Page 94: Operator Control Facilities
The operating panel contains either a full graphical display or a four-line display, de- ® pending on the specific device of the SIPROTEC 4 family. Operating Panel with Four-Line Display SIPROTEC SIEMENS ERROR 7SA522 MAIN MENU 01/05 SIPROTEC SIEMENS ERROR...
Page 95 ® SIPROTEC 4 Devices The functions of the operating and display elements on the operator control panel are described below. Display Process and device information are displayed in the LCD display. Commonly dis- played information includes circuit breaker status, measured values, counter values, binary information regarding the condition of the device, protection information, gen- eral messages, and alarms.
Page 96: Digsi ® 4 Tool
® SIPROTEC 4 Devices ® 4.2.2 DIGSI 4 Tool ® DIGSI 4 uses the familiar Windows operating environment. ® User Guide In DIGSI 4 only the settings that are available within a specific device are shown in the specific windows. If a protective feature is changed from disabled to enabled in the Device Configuration, then the settings relevant to that feature become available.
Page 97: Information Retrieval
® SIPROTEC 4 Devices Information Retrieval ® A SIPROTEC 4 device has an abundance of information that can be used to obtain an overview of the present and past operating conditions of the device and the portion of the power system being protected or controlled by the device. The information is represented in separate groups: Annunciations, Measurements,...
Page 98: Annunciations
® SIPROTEC 4 Devices 4.3.1 Annunciations The scope of the indication (messages) that are given under Annunciation is deter- ® mined when settings for the configuration of functions are applied to the SIPROTEC device. ® The messages are divided into the following categories, and displayed using DIGSI or the operator control panel of the device: Event Log: Operating messages: independent of network faults, e.g.
Page 99: Siprotec ® 4 Devices
® SIPROTEC 4 Devices ® Display on To display messages in the operating field of the SIPROTEC 4 device: the Device • Select 0DLQ 0HQX → $QQXQFLDWLRQ → e.g. (YHQW /RJ or 7ULS /RJ. 0$,1 0(18 !$QQXQFLDWLRQ ²! !0HDVXUHPHQW ²! $1181&,$7,21...
Page 100: Measurements
® SIPROTEC 4 Devices 4.3.2 Measurements The registered measured values are classified into the following categories for display ® in DIGSI 4 or on the operating field of the device: Primary values, based on the measured secondary values and the settings entered for the current transformers and voltage transformers.
Page 101 ® SIPROTEC 4 Devices ® Display on To display the measured values in the operating field of the SIPROTEC 4 device: the Device • Select 0DLQ 0HQX → 0HDVXUHPHQW → e.g. 2SHUDWLRQ SUL. 0$,1 0(18 !$QQXQFLDWLRQ ²! !0HDVXUHPHQW ²! 0($685(0(17 ...
Page 102: Oscillographic Fault Records
® SIPROTEC 4 Devices 4.3.3 Oscillographic Fault Records ® As an option, SIPROTEC 4 devices can have waveform capturing and event record- ing. Furthermore, the elements that are shown in the fault records can be selected by the user. ® The fault record data are retrieved from the device memory by DIGSI 4 and are stored as oscillographic records in standard COMTRADE format.
Page 103: Control
® SIPROTEC 4 Devices Control ® The multiple application possibilities for SIPROTEC 4 devices allow an equally flex- ible concept for command processing and control. Remote If the device is integrated into a master control system, then command outputs can be remotely controlled via the system interface using telegrams from Higher-level control systems, or substation control devices such as SICAM SC.
Page 104 ® SIPROTEC 4 Devices The status of a primary switch can be read out on the display using %5($.(56:,7&+ → 'LVSOD\ (Figure 4-10). %5($.(56:,7&+ !'LVSOD\ ²! ',63/$< !&RQWURO ²! !%UHDNHU 23(1 'LVF6ZLW &/26 Determining primary switch status using the operator control panel Figure 4-10 ®...
Page 105: Manual Overwrite / Tagging
® SIPROTEC 4 Devices Manual Overwrite / Tagging Manual Overwrite If the breaker/switch position is not available from the switch-gear, the status of the switchgear device can be manually set to the actual present position using the opera- tor control panel: 0DLQ 0HQX → &RQWURO → %UHDNHU6ZLWFK → 0DQ 2YHU ZULWH.
Page 106: General About The Setting Procedures
® SIPROTEC 4 Devices General about the Setting Procedures ® The SIPROTEC 4 devices are delivered with standard default settings. Changes to ® the settings are done with DIGSI ® The setting procedure for a SIPROTEC 4 device consists of Overall Protection and Control Design: determining the functions that are to be used (device configuration), assigning the binary inputs, outputs, LEDs, buffers, system port, etc.
Page 107 ® SIPROTEC 4 Devices /2$' 3$5$0(7(5 'RZQORDG DFWLYH Screen of Device during Settings Transfer Figure 4-13 ® Setting Sequence When setting a SIPROTEC 4 device, adhere to the following sequence: Specify the interfaces, the device data, and the time synchronization, Determine the device functions to be used, Carry out routing Design the assignment of the inputs and outputs using the configuration matrix,...
Page 108 ® SIPROTEC 4 Devices Settings for Setting changes to individual protective elements and functions can be done using the ® Protective operator control panel on the SIPROTEC 4 device. Elements Other settings such as input/output and device configuration can be viewed from the front panel, but not changed.
Page 109: Configuration Of The Scope Of Device Functions
® SIPROTEC 4 Devices Configuration of the Scope of Device Functions ® The individual devices within the SIPROTEC 4 family can be supplied with various protective functions. The ordering number of the device determines the available func- tions. The functions are specified more precisely through the process of enabling and disabling in the Device Configuration area of the settings.
Page 110: Configuration Of Inputs And Outputs (Configuration Matrix)
® SIPROTEC 4 Devices Configuration of Inputs and Outputs (Configuration Matrix) A configuration matrix is used to determine processing of the binary inputs, outputs, LEDs, and indication buffers. ® Configuration is performed with DIGSI The configuration matrix is primarily divided into the following columns: Device functions Information, e.g.
Page 111 ® SIPROTEC 4 Devices ® Figure 4-17 DIGSI 4, Input/Output Masking with the Configuration Matrix, Example Filter Functions With the use of filters, either all information can be displayed or a selection can be done according to indications, commands, or measured values. Additionally, there is a filter setting that differentiates between information configured and not configured.
Page 112 ® SIPROTEC 4 Devices ® SIPROTEC 4 device information can be connected in a user-specified manner using ® the programmable logic components of the DIGSI 4 CFC. For example, the user can implement interlocking checks, create grouped messages, or derive limit value viola- tion messages.
Page 113: Programmable Logic Cfc
® SIPROTEC 4 Devices Programmable Logic CFC ® ® The CFC program in DIGSI 4 can be used to create additional logic in SIPROTEC 4 devices. For example, special interlocking conditions for controlled equipment can be designed. Limit checks for measured values can be created, and corresponding control can be designed.
Page 114 ® SIPROTEC 4 Devices Figure 4-20 CFC Logic — example 4-26 7SA6 Manual C53000-G1176-C133-1...
Page 115: Power System Data
® SIPROTEC 4 Devices 4.10 Power System Data Power System In the window for Power System Data 1, important settings are entered that relate to Data 1 the power system and primary equipment connected to the device. The settings in- clude: system data such as frequency, voltage, etc.
Page 116: Setting Groups
® SIPROTEC 4 Devices 4.11 Setting Groups ® A SIPROTEC 4 device has up to four setting groups A through D. The setting options for each group are the same; however, the applied settings can be, and are typically intended to be, different in each group. The active setting group can easily be changed while the device is in-service.
Page 117 ® SIPROTEC 4 Devices Settings Double click on a protective function shown in the listbox of Figure 4-22 to obtain a dialogue box for entering the settings associated with this function (Figure 4-23). ® Figure 4-23 DIGSI 4, entering settings for a protective function — example ®...
Page 118: General Device Settings
® SIPROTEC 4 Devices 4.12 General Device Settings The settings of the display to show information of network faults on the LEDs and the ® ® LCD on the front of the SIPROTEC 4 device are defined in the DIGSI 4 window shown in Figure 4-25.
Page 119: Time Synchronization
® SIPROTEC 4 Devices 4.13 Time Synchronization ® Time tracking in a SIPROTEC 4 device can be implemented using: DCF77 Radio Receiver (Time Signal from PTB Braunschweig), IRIG-B Radio Receiver (Time Signal from the global positioning satellite (GPS) sys- tem), signals via the system interface from, for example, a substation control system, radio clock using a system-specific synchronizer box, minute impulses on a binary input.
Page 120: Serial Interfaces
® SIPROTEC 4 Devices 4.14 Serial Interfaces ® Devices in the SIPROTEC 4 family can be equipped with up to four serial interfaces. The system interface on the back panel of the device is for connection to a central master control system. Depending on the type and the version of the device the fol- lowing protocols are available: •...
Page 121 ® SIPROTEC 4 Devices To set the framing and baud rate: • Double click on 6HULDO 3RUWV in the data window and enter the specific settings in the window that follows. ® Figure 4-28 DIGSI 4, Interface Settings Window • Read-out on the Operator Control Panel ®...
Page 122: Passwords
® SIPROTEC 4 Devices 4.15 Passwords ® Passwords are assigned to a SIPROTEC 4 device to protect against unintended changes to the device or unauthorized operations from the device, such as switching. The following access levels are defined: Switching/tagging/manual overwrite, Non-interlocked switching, Test and diagnostics, Hardware test menus,...
Page 123 At delivery all passwords are set to 000000. Note: If the password for setting group switching has been forgotten, a temporary password can be received from Siemens. The temporary password can be used to define a new password for this function. ®...
Page 124 7SA6 Manual C53000-G1176-C133-1...
Page 125: Configuration
Configuration Configuration is the process of customizing the relay for the intended application. To accomplish this, the following questions must be answered: • Which functions are needed? • Which data and measured quantities need to be retrieved via which inputs? •...
Page 126: Configuration Of Functions
Configuration Configuration of Functions General The 7SA6 relay contains a series of protective and additional functions. The scope of hardware and firmware is matched to these functions. Furthermore, commands (control actions) can be suited to individual needs of the protected object. In addition, individual functions may be enabled or disabled during configuration, or interaction between functions may be adjusted.
Page 127 Configuration ® Figure 5-1 Device Configuration dialogue box in DIGSI 4 — example Before closing the dialogue box, transfer the modified functional setting to the relay by clicking on the item ',*6, → 'HYLFH. The data is stored in the relay in a non-volatile memory buffer.
Page 128 Configuration load operation (including tolerable overloading), set address 'LV 3,&.83 = ,! RYHUFXUU (overcurrent pickup, Subsubsection 6.2.2.1). If the voltage drop is also required as pickup criterion, select 8, (voltage-controlled overcurrent pickup, Subsubsection 6.2.2.2). For HV and EHV lines address setting 8,SKL! (voltage &...
Page 129: Settings
Configuration The $5 &RQWURO 0RGH under address allows a total of four options. You can determine whether the sequence of automatic reclosure cycles is defined by the fault situation of the pick-up of the starting protection function(s) (only for three-pole tripping) or by the type of trip command .
Page 130 Configuration Addr. Setting Title Setting Options Default Setting Comments Dis. PICKUP Z< (quadrilat.) I> (overcurr.) Distance protection pickup I> (overcurr.) program U/I/<phi> Disabled Power Swing Disabled Disabled Power Swing detection Enabled Teleprot. Dist. PUTT (Z1B) Disabled Teleprotection for Distance prot. PUTT (Pickup) POTT Dir.Comp.Pickup...
Page 131 Configuration Addr. Setting Title Setting Options Default Setting Comments Synchro-Check Disabled Disabled Synchronism and Voltage Check Enabled Overvoltage Disabled Disabled Overvoltage Enabled Fault Locator Disabled Enabled Fault Locator Enabled with BCD-output BREAKER FAILURE Disabled Disabled Breaker Failure Protection Enabled TripCirc.Superv Disabled Disabled Trip Circuit Supervision...
Page 132: Configuration Of The Binary Inputs And Outputs
Configuration Configuration of the Binary Inputs and Outputs General Upon delivery, the display on the front panel of the relay, some of the function keys, the binary inputs and outputs (output contacts) are assigned to certain information. These assignments may be modified, for most information, allowing adaptation to the local requirements.
Page 133: Structure And Operation Of The Configuration Matrix
Configuration e.g. Isolation e.g. mcb switch (7SA6) (7SA6) Binary input Binary input (e.g. BI1) L– (e.g. BI 2) (system) (system) Binary input (e.g. BI 3) L– Double point indication (DP) Single point indication (SP) Figure 5-3 Input indications Additionally to the predefined input and output indications new customer specific indi- cations and even control commands for switching devices may be created.
Page 134 Configuration device. It is identified by a function number No, LCD text (display text D), an explanation (long text L, minimized in Figure 5-4), and an information type T. The columns give the interfaces which should be the sources and/or destinations of the information.
Page 135 Configuration The matrix columns are divided into three types: Information, Source, and Destination. To the left of the matrix, information is divided into information groups. Reducing the The matrix may become very extensive because of the amount of information Matrix contained within.
Page 136 Configuration described in general in Chapter 4. Details regarding the settings for various functions are found in Chapter 6. The settings group to be processed may be selected via the menu item 9LHZ → 6HWWLQJ *URXS. The column header ,QIRUPDWLRQ contains the function number, the LCD text Information (display text), an explanation (long text), and the information type.
Page 137: Control Commands For Switching Devices
Configuration Source The source denotes the origin of the information which the matrix receives for further processing. Possible sources are: − BI Binary Input, − F Function key, which may serve to introduce a switching action, − C CFC, i.e., message comes from user-definable logic, −...
Page 138 Configuration Table 5-1 Most important command types &B' Double Command with Double With 4 relays without feedback &)B' Output with feedback &B' Double Command with Double With 3 relays without feedback &)B' (Close) and Single (Trip) Output with feedback &B' Double Command Motor Control With 2 relays, without feedback...
Page 139 Configuration CLOSE TRIP Command Command C– Switching CLOSE TRIP C– Device L– Matrix Configuration: Figure 5-6 Double command with single contacts CLOSE TRIP Command Command C– Switching CLOSE TRIP Device C– L– Matrix Configuration: Figure 5-7 Double command with single contacts plus common contact In contrast to other output relays the relay common to a bus is allocated to different switching devices (see Figure 5-8).
Page 140 Configuration CLOSE TRIP Command Command C–1 Switching CLOSE TRIP Device C–1 C–2 C–2 L– Matrix Configuration: Figure 5-9 Double command with double contacts (with 4 relays) CLOSE TRIP Command Command C– Switching CLOSE TRIP Device C– L– Matrix Configuration: Figure 5-10 Double command with double and single contacts (with 3 relays) For the motor control illustrated in Figure 5-11 the following can be realized: −...
Page 141 Configuration Due to the hardware platform a double command with single output via 2 relays with one pair of contacts each can only be applied with restrictions. For this purpose use the 2 power relays provided for motor control (only available in device versions with power relays) (see Figure 5-12 and 5-13).
Page 142: Establishing Information Properties
Configuration CLOSE TRIP L– Command Command C–2 C–1 C– Switching Device TRIP CLOSE Matrix Configuration: – – The relays characterized with a minus-symbol must not be connected in different way ! Figure 5-13 Single command with 2 outputs via 2 power relays with 2 contacts each (setting: “Double Command with Single Output”) - example 5.2.4 Establishing Information Properties...
Page 143 Configuration Internal Single Point Indication (IntSP) Figure 5-15 Information properties — example for the information type “Internal Single Point Indication” (IntSP) Singe Point Indication (SP) Figure 5-16 Information properties — example for information type “Single Point Indication” (SP) Double Point In addition to the properties entered for single point indications, a “Suppress Indication (DP) intermediate position”...
Page 144 Configuration briefly undefined conditions or contact chattering will not lead to an alarm; however, defined changes in the condition (final positions) are immediately reported. Figure 5-17 Information properties — example for information type “Double Point Indication” (DP) For input indications (single point indications 63, double point indications '3), Filtering / Contact transformer tap indication 7[7DS (if available), filter times may be entered (pick-up Chatter...
Page 145 Configuration Figure 5-18 Information Properties Example for Information Type “Transformer Tap Changer” (TxTap) If none of the available encoding formats are selected, each individual tap changer position may be set in a table. The table is accessed after the pull-down menu 7DEOH for encoding is opened, by selecting the button to the side.
Page 146 Configuration Using three binary inputs (= 3 bits), a maximum of 2 = 8 position settings may be represented in binary code. In order to begin the representation of transformer tap changer positions with the value 3, the display offset is chosen accordingly. The following must be set on the information property window: %LQDU\ Encoding...
Page 147 Configuration may also define the units for pulsed measured values (309) (Figure 5-20), the conversion factor, and the number of decimal places (Figure 5-21). If ZLSLQJ SXOVH6 is selected, each individual impulse increases the counter by one. If the double current pulse option is selected, then each individual transition (positive or negative) increases the counter by one.
Page 148 Configuration Figure 5-21 Information Properties Example for Information Type “Metered Value of Measured Value” (MVMV) The available information in the configuration matrix is determined by the device type Entering Your Own and the configured functional scope. If necessary, you may extend the configuration Information matrix to information groups or individual information defined and entered by yourself.
Page 149 Configuration Figure 5-23 Entry of the name of a user defined information group Information may be entered into the new information group using the information catalog (Figure 5-24). The information catalog is found in the menu bar under the 9LHZ option, or via an icon in the toolbar. User information may be entered into both the user defined groups and any other available information group.
Page 150: Performing Configuration
Configuration Deleting Groups Only user defined groups and information can be deleted. To delete an entire group, and Information click on the field containing the group designator, then press the right mouse button to open the context menu, and select 'HOHWH *URXS. A confirmation window will appear (Figure 5-25).
Page 151 Configuration Note : A single logical indication should not be configured to two binary inputs, since an OR- combination of both signals is not ensured. The operating program allows only one combination, and deletes the first combination when a second is established. In addition, a single point indication cannot be configured to a binary input and to CFC as a source at the same time.
Page 152 Configuration In order to configure a new indication, select one of the options (OPEN/CLOSE, ON/ OFF, etc.) from the indication group in the information catalog and drag it to the left side of the matrix. Upon release, a new row appears in the matrix. If the mouse is positioned at the intersection of this row with column F, and the right mouse button is pressed, a context menu opens (Figure 5-27) in which the function key may be set as a source by clicking the proper choice...
Page 153 Configuration Example: Double Command with 2 relays (acc. Table 5-1) Figure 5-28 Window information catalog (example for different command types) If a command with multiple outputs is configured, all binary outputs required in the matrix for the configuration are automatically defined. If one of these outputs is de- configured, all other binary outputs associated with the command will be automatically de-configured.
Page 154 Configuration Figure 5-29 Dialogue box: object properties for a command with feedback The conditional checks that should be conducted before execution of a switching command can also be defined: • Substation interlocking: interlocking of substations is carried out (configuration via a substation) •...
Page 155 Configuration Please be aware of the fact that also pickups from the overload protection or the sensitive earth current supervision can cause and maintain a fault and therefore block a close command. When resetting the interlocking also take into consideration that the automatic reclosure lockout for motors in this case does not automatically negate a close command sent to the motor.
Page 156 Configuration Table 5-3 Overview of indications via the system interface Information Type ↓ \Message Buffer → Profibus Single Point Indications (SP) Double Point Indications (DP) Output Indications (OUT) Internal Single Point Indications (IntSP) Internal Double Point Indications (DP) Command with/without Feedback (C_**) Measurement Value (MV) Measurement Value with Time (MVT) Measurement Value, User Defined (MVU)
Page 157: Transferring Metered Values
Configuration When selecting the 0$6.,1* ,2 menu, either binary inputs, LEDs, or binary out- puts may be selected. Selection of binary inputs is illustrated in Figure 5-30. 0$6.,1* ,2 !%LQDU\ ,QSXWV ²! %,1$5< ,13876 !/(' ²! !%LQDU\ ,QSXW ²! ²...
Page 158 Configuration Figure 5-32 Dialog Box to Restore Metered Values and Program Cyclical Restoration ® In the current version of DIGSI 4, triggering occurs based on the programmed Absolute time. 5-34 7SA6 Manual C53000-G1176-C133-1...
Page 159: Settings For Contact Chatter Blocking
Configuration 5.2.7 Settings for Contact Chatter Blocking Contact Chatter The contact chatter filter checks whether the number of condition changes at a binary Blocking input exceeds a preset value during a predetermined time interval. If this occurs, the binary input will be blocked for a certain time, so the event list does not contain a large number of unnecessary entries.
Page 160 Configuration The settings for the monitoring criteria of the chatter blocking feature are set only once for all binary inputs; however, the status of the chatter suppression can be set individually for each binary input. See “Filtering / Contact Chatter Suppression” in Sub- section 5.2.3.
Page 161: Creating User Defined Functions With Cfc
Configuration Creating User Defined Functions with CFC General The 7SA6 relay is capable of implementing user defined logic functions which may be processed by the relay. This CFC feature (Continuous Function Chart) is needed to process user defined supervision functions and logic conditions (e.g. interlocking conditions for switching devices) or to process measured values.
Page 162 Configuration task level Figure 5-34 Establishing the Within the Run Sequence menu, select (GLW, and then 3UHGHFHVVRU IRU ,QVWDOODWLRQ, to ensure that the function modules selected from the library will be implemented into the desired task level (Figure 5-35). task level Figure 5-35 Assignment of function modules to the selected The proper assignment is important for several reasons.
Page 163 Configuration task level Table 5-4 Selection guide for function modules and Run-Time Level Function Modules Description MW_BEARB PLC1_BEARB PLC_BEARB SFS_BEARB Meter processing Slow PLC Fast PLC Interlocking CONNECT Connection – D_FF D-flipflop – DI_TO_BOOL Double point to boolean, – conversion LIVE_ZERO Live-zero, non linear curve –...
Page 164 Configuration signal (OS4 in the diagram) may control an output relay, for example, and can create entries in the message buffers, depending on the preset configuration. Configuring and The default run-time sequence is determined by the sequence of the insertion of the Connecting logic modules.
Page 165 Configuration If the link line display becomes unwieldy or impossible because of space limitations, the CFC editor creates a pair of connectors (target icons) instead. The link is recognizable via correlated numbering (see Figure 5-39). Connector Figure 5-39 Connector Events Events (SP_Ev, DP_Ev) are not suitable for processing in CFC, and should therefore not be used as input signals.
Page 166 Configuration inputs can be changed. Typical examples are the logic modules AND , NAND , OR , NOR . Table 5-6 Processing times in TICKS required by the individual elements Individual Element Amount of TICKS Module, basic requirement each input more than 3 inputs for generic modules Connection to an input Connection to an output signal Additional for each configuration sheet...
Page 167 Configuration Figure 5-41 Warning message on reaching the limits A few examples are given below. Example 1 (MW): A configuration for low-current monitoring alarm (see Figure 5-42) which can be Low Current produced using CFC, should be a first example. This element may be used to detect Monitor operation without load, or to recognize open circuited conditions.
Page 168 Configuration Measurement Lower Setpoint Set points IL< Measurement Lower >1 I< Setpoint alarm OUT Set points IL< Measurement Lower Setpoint Set points IL< Figure 5-42 Under-current monitoring as an example of user defined measurement value processing Example 2: Interlocking logic (see Figure 5-43) is to be implemented for the operation of an Isolation Switch isolating switch using function key 4.
Page 169 Configuration Function Key 4 ≥1 CB is CLOSED CB is OPEN ≥1 GS is CLOSED & Disconnector GS is OPEN Close IS is CLOSED IS is OPEN Door is CLOSED Figure 5-43 Interlocking an disconnect switch as an example of a user defined interlock protective function Example 3 (PLC1): By using slow PLC processing, an additional, event-driven logic condition may be...
Page 170: Establishing A Default Display
Configuration Establishing a Default Display The default display is the display appearing automatically after the initialization of the processor system. There are two types of displays, the 4-line LC display and the graphic display. 4-line LC Display Under normal conditions, the so-called default display is the default image in the relay display.
Page 171 Configuration column B and sub-column D must have been linked. A cross in the small box will enable the link. A library is provided which contains symbols for circuit breakers, isolation switches, and grounding switches, and other devices. The standard setup may be modified, at ®...
Page 172 Configuration Figure 5-46 Standard default display after opening the Display Editor • The information corresponding to the equipment and configured previously in the configuration matrix can now be selected in a /LQN dialog window (see Figure 5- 47), from which the user may click on the desired option and confirm with 2.. In this manner, the user may link the graphical diagram with configuration settings.
Page 173 Configuration • Check the finished default display. The grid may be hidden by clicking 9LHZ → *ULG, equipment may be selected (brought to the front) by clicking 9LHZ → 0DNH DFWLYH, and a view of the overall relay with default display may be selected by clicking 9LHZ →...
Page 174: Draft Of A Feeder Control Display
Configuration Draft of a Feeder Control Display General The feeder control display is used to visualize the switch positions and to control the Information switching objects. That is why only the objects relevant for the switching process are usually displayed while measured values and such have been omitted. The feeder control display must be selected.
Page 175 Configuration Proceed as follows: • If you saved the default display as a template and want to use it as basis for the control display, open the template via 'LVSOD\ → 7HPSODWH → 2SHQ into an empty control display. • As the switching devices in the bay are to be controlled via the feeder control display, you need to make the respective device controllable for the operator.
Page 176: Serial Interfaces
Configuration Serial Interfaces The device contains one or more serial interfaces: an operator interface integrated into the front panel, and — depending on the model ordered — a rear service interface and a system interface for connection of a central control system. Certain standards are necessary for communication via these interfaces, which contain device identification, transfer protocol, and transfer speed.
Page 177 Configuration ® Figure 5-52 DIGSI 4, Settings for the rear port — example ® For the IEC communication, each SIPROTEC device must have a unique IEC address assigned to it. There is a total of 254 IEC addresses available. Select an address from the pull-down menu ,(&...
Page 178 Configuration ® Profibus For a Profibus connection — if available — between a SIPROTEC device and the ® ® Connection SICAM SAS or DIGSI 4, a minimum transfer rate of 500 kBaud is recommended for disturbance-free communication. Signal Idle State For optical connections, the signal idle state is preset for “light off.”...
Page 179 Configuration The type and number of system interface(s) is dependent on the device type and ver- sion and might be completely missing. The system interface data may be read at the device, but cannot be modified there, whereas the data for the operator and service interface can be modified.
Page 180: Date And Time Stamping
Configuration Date and Time Stamping Integrated date and time stamping allows an exact evaluation of the sequence of events (e.g. event logs and trip logs or limit violations). The following clock settings are available: • Internal RTC clock (Real Time Clock), •...
Page 181 Configuration ® Figure 5-57 Dialogue box for time synchronization and format in DIGSI Here you may select the time standard for internal time stamping by selecting from the following modes: Table 5-7 Operating modes for time synchronization Item Operating Mode Explanations Internal synchronization using RTC (pre-set) IQWHUQDO...
Page 182 Configuration When using radio clock signals, you must take into account that it can take up to three minutes after device start-up or restored reception for the received time signal to be decoded. The internal clock is not re-synchronized until then. With IRIG B, the year must be set manually, because this standard does not include a year value.
Page 183: Functions
Functions ® This chapter describes the numerous functions available in the SIPROTEC 7SA6 relay. The setting options for each function are defined, including instructions for reporting setting values and formulae where required. General Distance Protection 6-28 Measures to Be Taken in Case of Power Swings 6-71 Teleprotection Schemes with Distance Protection 6-75...
Page 184: General
Functions General A few seconds after the device is switched on, the initial display appears in the LCD. Depending on the device version either measured values (four-line display) or a sin- gle-phase switching diagram of the feeder status (graphic display) is displayed in the 7SA6.
Page 185 Functions Settings are selected using the keys. When the key is pressed, the ENTER user is prompted for a password. The user should enter Password No. 5 and then press the ENTER key. The current value of the setting appears in a text box, with a blinking text insertion cursor.
Page 186 Functions Exiting the If an attempt is made to exit setting modification mode using the key or the key, MENU the message $UH \RX VXUH" will be displayed followed by the responses <HV 1R Setting Mode and (VFDSH (see Figure 6-4). If the response <HV is selected, modification of settings can be confirmed by pressing the key.
Page 187 Functions windows. In this situation, the user can select individual windows via tabs located at the top of the dialogue box (e.g., in Figure 6-6, tabs exist for 3RZHU 6\VWHP, &7·V, 97·V, and %UHDNHU). ® Figure 6-6 Power system data dialogue box in DIGSI 4 —...
Page 188 Functions acknowledge the message, click 2., and the original value reappears. A new entry can be made or another setting value can be modified. Primary or Setting values can be entered and displayed in primary terms or secondary terms, as ®...
Page 189: Power System Data 1
Functions 6.1.1 Power System Data 1 Some system and plant data are required by the device, so that it may adapt its functions to these data, according to its mode of operation. Amongst others, the plant and instrument transformer ratings, polarity and termination of the measured values, parameters of the circuit breaker, etc.
Page 190 Functions Address is then set to: 8 WUDQVIRUPHU = 8GHOWD WUDQVI. When connected to the e-n winding of a set of voltage transformers, the voltage transformation ratio of the voltage transformers is usually: ⁄ ⁄ Nprim Nsec Nsec ----------------- - --------------- - --------------- - In this case the factor 8SK 8GHOWD (address , matching ratio for the...
Page 191 Functions this difference must also be considered: Address : 8OLQH 8V\QF = 100 V/ 110 V = Busbar 400 kV (any voltage) 400 kV 110 V 400 kV/220 kV 220 kV/100 V V#ÃU…h†s‚…€r… VƒƒÃU…h†s‚…€r… VƒƒÃ8PII G ²G! VƒƒVyvr ϕ...
Page 192 Functions Ratio of earth current transformer ⁄ ----------------------------------------------------------------------------------------------------- - ph CT Ratio of phase current transformers This is independent on whether the device has a normal measured current input for or a sensitive measured current input for I (for sensitive earth fault detection in non-earthed systems) Example: Phase current transformers 500 A/5 A...
Page 193: Settings
Functions Address 3+$6( 6(4 is used to establish the phase rotation. The preset phase Phase Rotation / / / / / / sequence is “ ”. For systems that use a phase sequence of “ ”, address must be set accordingly. Address 'LVWDQFH 8QLW corresponds to the units of length (miles or km) Units of Length applicable to fault locating.
Page 194 Functions Addr. Setting Title Function Setting Options Default Setting Unom SECONDARY Power System Data 1 80..125 V 100 V CT PRIMARY Power System Data 1 10..5000 A 1000 A CT SECONDARY Power System Data 1 SystemStarpoint Power System Data 1 Solid Earthed Solid Earthed Peterson-Coil earthed...
Page 195: Setting Groups
Functions 6.1.2 Setting Groups Purpose of Setting A setting group is a collection of setting values to be used for a particular application. Groups In the 7SA6 relay, four independent setting groups (A to D) are possible. The user can switch between setting groups locally, via binary inputs (if so configured), via the operator or service interface using a personal computer, or via the system interface.
Page 196 Functions The next step is to highlight the name of setting group in the list into which the setting values should be copied. Go to the menu bar, click on (GLW and select 3DVWH. A confirmation box will appear (see Figure 6-11). Select <HV to copy the setting values. Note: All existing setting values in the setting group that has been copied to will be overwrit- ten.
Page 197: Settings
Functions 6.1.2.1 Settings Addr. Setting Title Function Setting Options Default Setting CHANGE Change Group Group A Group A Group B Group C Group D Binary Input Protocol 6.1.2.2 Information Overview FNr. Setting Title Default Setting >Set Group Bit0 >Setting Group Select Bit 0 >Set Group Bit1 >Setting Group Select Bit 1 Group A...
Page 198: General Protection Data
Functions 6.1.3 General Protection Data General protection data (36\VWHP 'DWD ) includes settings associated with all functions rather than a specific protective or monitoring function. In contrast to the Power System Data 1 (36\VWHP 'DWD ) as discussed in Sub-section 6.1.1, these settings can be changed over with the setting groups.
Page 199 Functions address 1110 or 1112 or the line length in address 1111 or 1113 have been entered, the line data must be entered again for the revised unit of length. ® When entering the parameters with a personal computer and DIGSI 4 the values may optionally also be entered as primary values.
Page 200 Functions Resistance ratio: Reactance ratio:     ⋅ ⋅ -- - -- - ------ - ------ - 1 ------ - ------ 1 – –     Whereby the following applies — Zero sequence resistance of the line —...
Page 201 Functions These values may either apply to the entire line length or be based on a per unit of line length, as the quotients are independent of length. Furthermore it makes no difference if the quotients are calculated with primary or secondary values. For overhead lines it is generally possible to calculate with scalar quantities as the angle of the zero sequence and positive sequence system only differ by an insignificant amount.
Page 202 Functions . ! = and $QJOH, .! = apply to the remaining zones Z1B and Z2 up to Z5 (as seen from the relay location). Note: If a combination of values is set which is not recognized by the device, it operates with 0°...
Page 203 Functions The current ratio may also be calculated from the desired reach of the parallel line compensation and vice versa. The following applies (refer to Figure 6-12): x l ⁄ -- - ------------------------ - -------- ----------------- - 2 x l ⁄ –...
Page 204: Settings
Functions ® during opening. This setting can only be changed with DIGSI 4 under “Additional Settings”. In address /LQH &ORVXUH the criteria for the internal recognition of line energization are determined. In the case of RQO\ ZLWK 0DQ&O only the manual close signal derived via binary input is used to recognize the circuit breaker closing condition.
Page 205 Functions relevant with one- and three-pole tripping and therefore only available in this version. Additional information can be found in Section 6.20.3 fault detection logic of the device. With the setting ZLWK 3,&.83 every pickup in more than one phase leads to three- pole coupling of the trip outputs, even if only a single-phase earth fault is situated within the tripping area, and further faults only affect the higher zones, or are located in the reverse direction.
Page 206 Functions L1–E L2–E Multiple fault on a double-circuit line next to a generato Figure 6-14 Address $ 7ULSSK)OW determines that the short-circuit protection functions perform only a single-pole trip in case of isolated two-phase faults (clear of ground), provided that single-pole tripping is possible and permitted. This allows a single-pole rapid automatic reclosure cycle for this kind of fault.
Page 207: Information Overview
Functions Addr. Setting Title Function Setting Options Default Setting 1126 RM/RL ParalLine Power System Data 2 0.00..8.00 0.00 1127 XM/XL ParalLine Power System Data 2 0.00..8.00 0.00 1128 RATIO Par. Comp Power System Data 2 50..95 % 85 % 1130A PoleOpenCurrent Power System Data 2 0.05..1.00 A...
Page 208 Functions F.No. Alarm Comments >CB1 Pole L1 >CB1 Pole L1 (for AR,CB-Test) >CB1 Pole L2 >CB1 Pole L2 (for AR,CB-Test) >CB1 Pole L3 >CB1 Pole L3 (for AR,CB-Test) >CB1 3p Closed >CB1 aux. 3p Closed (for AR, CB-Test) >CB1 3p Open >CB1 aux.
Page 209 Functions F.No. Alarm Comments Man.Close Cmd CB CLOSE command for manual closing 6-27 7SA6 Manual C53000-G1176-C133-1...
Page 210: Distance Protection
Functions Distance Protection Distance protection is the main function of the device. It is characterized by high measuring accuracy and the ability to adapt to the given system conditions. It is supplemented by a number of additional functions. 6.2.1 Earth Fault Recognition 6.2.1.1 Method of Operation Recognition of an earth fault is an important element in identifying the type of fault, as...
Page 211 Functions Negative Sequence On long, heavily loaded lines, the earth current measurement could be overstabilized Current 3I by large currents (ref. Figure 6-15). To ensure secure detection of earth faults in this case, a negative sequence comparison stage is additionally provided. In the event of a single-phase fault, the negative sequence current I has approximately the same magnitude as the zero sequence current I...
Page 212 Functions !" "D3 ≥1 earth fault 3V0> !# "V3 Figure 6-17 Logic of the earth fault recognition Earth Fault The earth fault recognition is modified during the single-pole open condition with Recognition during single-pole automatic reclosure in an earthed system (Figure 6-18). In this case, the Single-Pole Open magnitudes of the currents and voltages are monitored in addition to the angles Condition...
Page 213: Setting Of The Parameters For This Function
Functions 6.2.1.2 Setting of the Parameters for this Function In systems with earthed star-point, the setting ,! 7KUHVKROG (Address ) is set somewhat below the minimum expected earth short-circuit current. 3I is defined as the sum of the phase currents |I |, which equals the star-point current of the set of current transformers.
Page 214: Voltage-Dependent Current Fault Detection U/I
Functions parameter SK )$8/76 (address $) according to Table 6-2. In the non-earthed network, the phase–to–phase loop is always selected for single–phase pick-up without earth-fault detection. The phases that have picked-up are signalled. If an earth fault has been detected, it is also indicated.
Page 215 Functions Load arrea U(I>>) U(I>) Short-circuit area Iph> Iph>> Figure 6-19 U/I characteristic The setting (352* 8,) determines if the phase–earth loops or the phase– Pick-up Mode phase loops are always valid or if this depends on the earth-fault detection according to Section 6.2.1.
Page 216 Functions When evaluating phase–phase loops, the sensitivity towards phase–phase faults is particularly high. In extensive compensated networks this selection is advantageous because it excludes pick-up as a result of single earth faults on principle. With two- and three-phase faults it automatically adapts to the prevailing infeed conditions, i.e. in the weak-infeed operation mode it becomes more current-sensitive, with strong infeed and high load currents the pick-up threshold will be higher.
Page 217: Voltage And Phase-Angle Dependent Current Fault Detection U/I/J
Functions U/I pick-up Table 6-6 Loop and phase indication for single–phase Phase–phase voltage program in the event of earth faults, phase–phase voltages without earth faults (address ) Pick-up Measured Measured Earth–fault Parameter Valid Signalled 3K )$8/76 module current voltage detection loop Phase(s) L1–E...
Page 218: Applying The Function Parameter Settings
Functions is cut off by the overcurrent stage Iϕ> also comes into effect. The bold dots mark the settings which determine the geometry of the current/voltage characteristic. The angle-dependent area which is shaded dark grey within the short-circuit angle area can either have an effect in forward direction (in direction of line) or in both directions (settable).
Page 219 Functions With the U/I(/ϕ) pick-up mode you have the option to determine the voltage measuring and, if applicable, the phase-angle measuring for phase–to–earth measuring units, and for phase–to–phase measuring loops separately. Address 352*$0 8, states which loop voltages shall apply to phase–to–earth (3K() and which ones to phase–to–phase (3K3K).
Page 220 Functions If U/I pick-up is required because the minimum short-circuit current is below the maximum load current (incl. a safety factor of 1.2), the condition for maximum load current in respect to ,SK!! still has to be observed. Then, the minimum current limit ,SK! (address ) is set to below the minimum short-circuit current (approx.
Page 221 Functions The characteristic has to be set such that it is just below the minimum expected volt- age at the maximum expected load current. If in doubt, check the pick-up conditions in accordance with the U/I characteristic. Angular If a distinction between short circuit and load conditions is not always possible using Dependence the U/I characteristic which is independent of the phase angle, the angular dependent section d-e can additionally be used.
Page 222: Settings
Functions 6.2.2.5 Settings Note: The indicated secondary current values and values of impedance for setting ranges and default settings refer to I = 1 A. For the nominal current 5 A the current values are to be multiplied by 5. The values of impedance are divided by 5. Addr.
Page 223: Information Overview
Functions 6.2.2.6 Information Overview F.No. Alarm Comments 3781 Dis.TimeOut Tfw DistanceTime Out Forward PICKUP 3782 Dis.TimeOut Tnd DistanceTime Out Reverse/Non-dir. PICKUP Dis Pickup ϕ L1 3695 Dist.: Phi phase L1 Pickup Dis Pickup ϕ L2 3696 Dist.: Phi phase L2 Pickup Dis Pickup ϕ...
Page 224 Functions L1–E L2–E Figure 6-22 Short circuit of a phase-phase loop The calculation of the phase-phase loop does not take place as long as one of the concerned phases is switched off (during single-pole dead time), to avoid an incorrect measurement with the undefined measured values existing during this state.
Page 225 Functions L3–E Figure 6-24 Short circuit of a phase-earth loop The factor Z only depends on the line parameters and no longer on the fault distance. The evaluation of the phase-earth loop does not take place as long as the affected phase is switched off (during single-pole dead time), to avoid an incorrect measurement with the undefined measured values existing in this state.
Page 226 Functions Apart from the zone selectivity , the phase selectivity is also important to achieve correct identification of the faulted phases, required to alarm the faulted phase and especially to enable single-pole automatic reclosure. Depending on the infeed conditions, close-in short circuits may cause unfaulted loops to “see” the fault further away than the faulted loop, but still within the tripping zone.
Page 227 Functions Table 6-7 Evaluation of the measured loops for double loop faults in an earthed system in case both earth faults are close to each other Fault detection Evaluated Setting Loop Loop Parameter 1221 3K( IDXOWV L1–E, L2–E, L1–L2 L2–E, L1–L2 %ORFN OHDGLQJ ‘...
Page 228 Functions There are special measures against such undesirable pick-ups (see Subsection 6.2.1). With the occurrence of a double earth fault in isolated or resonant-earthed systems it is sufficient to switch off one of the faults. The second fault may remain in the system as a simple earth fault.
Page 229 Functions Table 6-8 Evaluation of measured loops for a multiple pick-up in non-earthed systems Fault detection Evaluated Setting Loops Loop(s) Parameter 1221 3+$6( 35()SKH = L1–E, L2–E, (L1–L2) L2–E / / DF\FOLF L2–E, L3–E, (L2–L3) L2–E L1–E, L3–E, (L3–L1) L3–E 3+$6( 35()SKH = L1–E, L2–E, (L1–L2) L1–E...
Page 230: Applying The Function Parameter Settings
Functions Without parallel line compensation, the earth current on the parallel line will in most cases cause the reach threshold of the distance protection to be shortened (underreach of the distance measurement). In some cases — for example when the two feeders are terminated to different busbars, and the location of the earth fault is on one of the remote busbars (at B in Figure 6-27) —...
Page 231 Functions parallel line is connected to the I measuring input of the 7SA6 and this is entered in the configuration settings. In this case, the setting 3DUDO/LQH &RPS = <(6 must be set in address ; otherwise the presetting 12 remains. The coupling factors were already set as part of the general protection data (Sub- section 6.1.3), as was the reach of the parallel line compensation.
Page 232 Functions gization is activated for all recognized faults in any zone (i.e. with general fault detec- tion of the distance protection). Load Area On long heavily loaded lines, the risk of encroachment of the load impedance into the (only for tripping characteristic of the distance protection may exist.
Page 233: Settings
Functions 6.2.3.3 Settings Note: The indicated secondary current values and values of impedance for setting ranges and default settings refer to I = 1 A. For the nominal current 5 A the current values are to be multiplied by 5. The values of impedance are divided by 5. Addr.
Page 234: Information Overview
Functions 6.2.3.4 Information Overview F.No. Alarm Comments 3603 >BLOCK Distance >BLOCK Distance protection 3611 >ENABLE Z1B >ENABLE Z1B (with setted Time Delay) 3613 >ENABLE Z1Binst >ENABLE Z1B instantanous (w/o T-Delay) 3617 >BLOCK Z4-Trip >BLOCK Z4-Trip 3618 >BLOCK Z5-Trip >BLOCK Z5-Trip 3651 Dist.
Page 235 Functions F.No. Alarm Comments 3707 Dis.Loop L1-E r Distance Loop L1E selected reverse 3708 Dis.Loop L2-E r Distance Loop L2E selected reverse 3709 Dis.Loop L3-E r Distance Loop L3E selected reverse 3710 Dis.Loop L1-2 r Distance Loop L12 selected reverse 3711 Dis.Loop L2-3 r Distance Loop L23 selected reverse...
Page 236: Distance Protection With Polygonal Tripping Characteristic
Functions F.No. Alarm Comments 3781 Dis.TimeOut Tfw DistanceTime Out Forward PICKUP 3782 Dis.TimeOut Trv DistanceTime Out Reverse/Non-dir. PICKUP 3801 Dis.Gen. Trip Distance protection: General trip 3802 Dis.Trip 1pL1 Distance TRIP command - Only Phase L1 3803 Dis.Trip 1pL2 Distance TRIP command - Only Phase L2 3804 Dis.Trip 1pL3 Distance TRIP command - Only Phase L3...
Page 237 Functions The R-reach may be set separately for the phase–phase faults and the phase–earth faults to achieve a larger fault resistance coverage for earth faults if this is desired. For the first zone an additional tilt α exists, which may be used to prevent overreach resulting from angle variance and/or two ended infeed to short-circuits with fault resistance.
Page 238 Functions L3–L1 – U L1–L2 L3–L1 L1–L2 L2–L3 L2–L3 a) Phase–earth loop (L1–E) b) Phase–phase loop (L2–L3) Figure 6-30 Direction determination with quadrature voltages Table 6-9 Allocation of the measured values for the direction determination Measured current Short-circuit loop Quadrature Loop (direction) voltage...
Page 239 Functions A non-directional zone has no directional characteristic. The entire tripping area applies here. “non-directional” “forward” “reverse” “non-directional” 1RQ'LUHFWLRQDO ) also applies to “ ” Figure 6-31 Directional characteristic in the R–X–diagram Characteristics of The theoretical steady-state directional characteristic shown in Figure 6-31 applies to the Directional faulted loop voltages.
Page 240 Functions 7SA6 6-32a “forward” “forward” “reverse” “reverse” 6-32b 6-32c Figure 6-32 Directional characteristic with quadrature or memorized voltages Pick-up and Using the fault detection modes I, U/I or U/I/ϕ according to Subsection 6.2.2 the Assignment to the impedances, that were calculated from the valid loops, are assigned, after the pick-up, Polygons to the zone characteristics set for the distance protection.
Page 241: Applying The Function Parameter Settings
Functions Dis switched off ≥1 Dis blocked PS blocking Dis FD forward & & ≥1 release of Z1 & Dis FD reverse & " PƒÃ€‚qrÃa s‚…h…q …r‰r…†r „1“ ‚qv…rp‡v‚hy further vhp‡v‰r zones Figure 6-33 Release logic for a zone (example for Z1) In total the following zones are available: Independent zones: •...
Page 242 Functions ® When entering the relay parameters with a personal computer and DIGSI 4 it can be selected whether the settings are entered as primary or secondary values. In the case of parameterization with secondary quantities, the values derived from the grading coordination chart must be converted to the secondary side of the current and voltage transformers.
Page 243 Functions care should however be taken that an arc fault on the local cable termination is inside the set resistance of the first zone. The resistance of the line need not be taken into consideration since it was considered through the shape of the polygon, provided the line angle in address /LQH $QJOH (see Subsection 6.1.3, margin heading „General Line Data“) had been set correctly.
Page 244 Functions For the first zone, Z1, an additional tilt α (Figure 6-29) can be set by means of the parameter in address =RQH 5HGXFWLRQ. This setting is required if short circuits with a large fault resistance (e.g. overhead lines without earth/shield wire) are expected on lines with an infeed at both ends and load transfer in the direction of the line (export).
Page 245: Settings
Functions Zone Z1B is usually used in combination with automatic reclosure and/or teleprotection systems. It can be activated internally by the teleprotection functions (see also section 6.4) or the integrated automatic reclosure (if available, see also section 6.1) or externally by a binary input. It is generally set to at least 120% of the line length.
Page 246 Functions Addr. Setting Title Setting Options Default Setting Comments 1354 RE(Z1B) Ø-E 0.05..250.00 Ohm 3.00 Ohm RE(Z1B), Resistance for ph-e faults 0.00..30.00 sec; ∞ 1355 T1B-1phase 0.00 sec T1B-1phase, delay for single ph. faults 0.00..30.00 sec; ∞ 1356 T1B-multi-phase 0.00 sec T1B-multi-ph, delay for multi ph.
Page 247 Functions Addr. Setting Title Setting Options Default Setting Comments 1341 Op. mode Z5 Forward Inactive Operating mode Z5 Reverse Non-Directional Inactive 1342 R(Z5) Ø-Ø 0.05..250.00 Ohm 12.00 Ohm R(Z5), Resistance for ph-ph- faults 1343 X(Z5)+ 0.05..250.00 Ohm 12.00 Ohm X(Z5)+, Reactance for Forward direction 1344 RE(Z5) Ø-E...
Page 248: Tripping Logic Of The Distance Protection
Functions 6.2.5 Tripping Logic of the Distance Protection 6.2.5.1 Method of Operation General Fault As soon as any one of the distance zones has determined with certainty that the fault is inside its tripping range, the signal “'LV 3,&.83” (general fault detection of the Detection distance protection) is generated.
Page 249 Functions 3771 Dis T1 exp. 3801 Dis G–trip "$ U ƒuh†r 3802 Dis trip 1polL1 & ≥1 Dis FD Z1 L1 3803 Dis trip 1polL2 Dis Anr Z1 L2 Dis Anr Z1 L3 ≥1 Tripping logic 3804 Dis trip 1polL3 of the distance U €ˆy‡vƒuh†r "%...
Page 250 Functions ""$ U#Ã9@G6`Ã 3778 Dis T4 exp. Dis FD Z4 L1 ≥1 Dis FD Z4 L2 ≥1 3801 Dis G–trip Dis FD Z4 L3 Tripping logic & & 3805 Dis trip L123 of the distance Z4 undelayed (refer Fig. 6-28) protection 3821 Dis trip Z4 FNo 3617...
Page 251 Functions 3780 Dis T1B exp. "$$ U 7 ƒuh†r 3801 Dis G–trip ≥1 Dis FD Z1B L1 & Dis FD Z1B L2 Tripping logic 3802 Dis trip1polL1 Dis FD Z1B L3 of the distance ≥1 protection "$% U 7€ˆy‡vƒuh†r 3803 Dis trip1polL2 &...
Page 252: Applying The Function Parameter Settings
Functions 6.2.5.2 Applying the Function Parameter Settings The trip delay times of the distance stages and intervention options which are also processed in the tripping logic of the distance protection were already considered with the zone settings (Sub-sections 6.2.4.2). The parameter in address 627) ]RQH which determines the response during switching onto a short-circuit was already set as part of the general data of the distance protection (Sub-section 6.2.3.2).
Page 253: Measures To Be Taken In Case Of Power Swings
Functions Measures to Be Taken in Case of Power Swings Following dynamic events such as load jumps, short-circuits, reclose dead times or switching actions it is possible that the generators must realign themselves, in an oscillatory manner, with the new load balance of the system. The distance protection registers large transient currents during the power swing and, especially at the electrical centre, small voltages (Figure 6-39).
Page 254 Functions swing block in the affected phases, thereby allowing the tripping of the distance protection. To detect a power swing, the rate of change of the impedance vector is measured. The measurement is started when the impedance vector enters the power swing measuring range PPOL (refer to Figure 6-40).
Page 255: Applying The Function Parameter Settings
Functions A power swing is detected, if during the last eight measuring cycles (corresponding to two periods), the continuity of the changing impedance vector is confirmed. In this way, slip frequencies of up to at least 7 Hz are detected. Power Swing The power swing blocking affects the distance protection.
Page 256: Settings
Functions The four possible programs may be set in address 36 2S PRGH, as described in Sub-section 6.3.1: $OO ]RQHV EORFN or ==% EORFN or = WR = EORFN or ==%= EORFN. Additionally the tripping function for unstable oscillations (out-of-step condition, loss of system synchronism) can be set with parameter 3RZHU6ZLQJ WULS (address ), which should be set to <HV if required (presetting is 1R).
Page 257: Teleprotection Schemes With Distance Protection
Functions Teleprotection Schemes with Distance Protection Purpose of Short-circuits which occur on the protected line, beyond the first distance zone, can Teleprotection only be cleared selectively by the distance protection after a delay time. On line sections that are shorter than the smallest sensible distance setting, short-circuits can also not be selectively cleared instantaneously.
Page 258: Method Of Operation
Functions For the other schemes at least one communication channel in each direction is required. For example, fibre optic connections or voice frequency modulated high frequency channels via pilot cables, power line carrier or microwave radio links can be used for this purpose. The 7SA6 also makes provision for the transmission of phase segregated signals.
Page 259 Functions corresponding protection function picked up. The transmitted signal may be prolonged (settable in address 6HQG 3URORQJ), to compensate for possible by T differences in the pick-up times at the two line ends. The distance protection is set in such a way that the first zone reaches up to approximately 85 % of the line length.
Page 260: Permissive Underreach Transfer Trip With Zone Acceleration Z1B (Putt)
Functions Dis Telep. off 4052 Dis.Telep.OFF ≥1 >Dis.Telep. Blk FNo 4005 4055 Dis.T.Carr.Fail. >Dis.RecFail TrqÃQ…‚y‚tÃ ! " Dis. forward & & 4057 Dis.T.SEND L1 Dis Z1 L1 & & 4058 Dis.T.SEND L2 Dis Z1 L2 & & 4059 Dis.T.SEND L3 Dis Z1 L3 &...
Page 261 Functions Z1(A) Z1B(A) Z1B(B) Z1(B) transm. transm. ≥1 ≥1 & & trip trip further further zones zones rec.. rec.. Figure 6-44 Operation scheme of the permissive underreach transfer trip method via Z1B Sequence Figure 6-45 shows the logic diagram of the permissive underreach transfer trip scheme for one line end.
Page 262: Direct Underreach Transfer Trip
Functions The permissive transfer trip only functions for faults in the forward direction. Accordingly, the first zone Z1 and the overreaching zone Z1B of the distance protection must definitely be set to )RUZDUG: address 2S PRGH = and 2S PRGH =%, refer also to Sub-section 6.2.4.2 under the margin heading “Independent Zones Z1 up to Z5”...
Page 263: Permissive Overreach Transfer Trip (Pott)
Functions Z1(A) Z1(B) Trans. Trans. ≥1 ≥1 Trip Trip further further Zones Zones Rec. Rec. Figure 6-46 Operation scheme of the direct underreach transfer trip method 6.4.1.4 Permissive Overreach Transfer Trip (POTT) Principle The permissive overreach transfer mode uses a permissive release principle. The overreaching zone Z1B set beyond the opposite station is decisive.
Page 264 Functions Z1(A) Z1B(A) Z1B(B) Z1(B) ≥1 ≥1 transmit transmit & & & & ≥1 ≥1 trip trip Z1 or Z1 or further further zones receive. zones receive. Figure 6-47 Operation scheme of the permissive overreach transfer trip method Sequence Figure 6-48 shows the logic diagram of the signal comparison scheme for one line end.
Page 265 Functions FNr 4052 Dis. Telep. Off Dis Telep. off FNr 4003 ≥1 >Dis.Telep. Blk FNr 4055 FNr 4005 >Dis. RecFail Dis T Carr Fail & Transient blocking (section 6.4.1.10) Ã Send Prolong. TRIP Command & FNr 4057 & ≥1 Dis.T.SEND L1 Dis.
Page 266: Directional Comparison Pickup
Functions 6.4.1.5 Directional Comparison Pickup Principle The directional comparison pickup uses a permissive release principle. Figure 6-49 shows the operation scheme. Z1(A) PICKUP(A) PICKUP(A) PICKUP(B) PICKUP(B) Z1(B) dir. dir. ≥1 ≥1 transmit transmit & & & & ≥1 ≥1 trip trip Z1 or Z1 or...
Page 267 Functions function. This “Weak Infeed Function” (echo function) is referred to in Sub-section 6.4.1.11. It is activated when a signal is received from the opposite line end — in the case of three terminal lines from at least one of the opposite line ends — without the device having detected a fault.
Page 268: Unblocking With Z1B
Functions 6.4.1.6 Unblocking with Z1B Principle The unblocking method uses a permissive release principle. It differs from the permissive overreach transfer scheme (Sub-section 6.4.1.4) in that tripping is possible also when no release signal is received from the opposite line end. It is accordingly mainly used on long lines, if the signal is transmitted via the protected line with power line carrier (PLC), and the attenuation of the transmitted signals at the fault location can be so severe that the reception at the other line end cannot be guaranteed in all...
Page 269 Functions For all zones except Z1B, tripping results without release from the opposite line end, allowing the protection to function with the usual grading characteristic independent of the signal transmission. Sequence Figure 6-52 shows the logic diagram of the unblock scheme for one line end. The unblock scheme only functions for faults in the forward direction.
Page 270 Functions FNr 4052 Dis.Telep.OFF Dis Telep. off FNr 4003 ≥1 >Dis.Telep. Blk FNr 4055 FNr 4005 Dis.T.Carr.Fail >Dis. RecFail & Transient blocking (section 6.4.1.10) Ã Trip command Send Prolong & FNr 4057 & ≥1 Dis. forward Dis.T.SEND L1 &...
Page 271: Blocking Scheme
Functions FNr 4032 1-L1 >Dis.T.UB & ≥1 & Unblock L1 & FNr 4033 1-L2 >Dis.T.UB & ≥1 & Unblock L2 & FNr 4034 1-L3 >Dis.T.UB & ≥1 & Unblock L3 ≥1 & FNr 4030 ub 1 >Dis.T.UB & ≥1 & Unblock 1 FNr 4031 &...
Page 272 Functions this scheme even if no signal reaches the opposite end. It is therefore mainly used on long lines, when the signal must be transmitted via the protected line with power line carrier (PLC), and the attenuation of the transmitted signal could be so severe at the fault location, that reception at the other line end cannot necessarily be guaranteed.
Page 273 Functions Dis Telep. off Dis Telep. off FNr 4052 FNr 4003 ≥1 >Dis.Telep. Blk FNr 4055 FNr 4005 Dis T.Carr.Fail >Dis. RecFail & Transient Block. FNr 4060 & (u,i) Dis.Jump Blocking 40 ms Ã Send Prolong FNr 4056 & Dis.
Page 274: Pilot Wire Comparison
Functions As soon as the distance protection has detected a fault in reverse direction, the blocking signal is sent (e.g. “'LV76(1'”, FNo ). The send signal can be prolonged in address . If the fault is in forward direction, the blocking signal is stopped (e.g.
Page 275 Functions For lines shorter than the shortest settable line please take into consideration that the first distance zone is either set to “disabled” or that T1 is delayed for at least one selective time interval. If the line has single-end infeed an instantaneous trip for the whole line is possible. Since no pick-up occurs on the non-feeding line end, the loop is not interrupted at that point, but only on the feeding line end.
Page 276: Reverse Interlocking
Functions 6.4.1.9 Reverse Interlocking If the distance protection 7SA6 is used as back-up protection in single-end fed transformer feeders, the reverse interlocking function ensures a fast protection of the busbar without endangering the selectivity for faults on the outgoing feeders. According to Figure 6-57 the distance zones Z1 and Z2 serve as back-up stages for faults on the outgoing lines, for example a fault in F2.
Page 277: Transient Blocking
Functions 6.4.1.10 Transient Blocking In the overreach schemes, the transient blocking provides additional security against erroneous signals due to transients caused by clearance of an external fault or by fault direction reversal during clearance of a fault on a parallel line. The principle of transient blocking scheme is that following the incidence of an external fault, the formation of a release signal is prevented for a certain (settable) time.
Page 278 Functions If there is no fault detection, the echo function causes the received signal to be sent back to the other line end as an “echo”, where it is used to initiate permissive tripping. The detection of the weak infeed and accordingly the requirement for an echo are combined in the central AND gate (Figure 6-59).
Page 279: Applying The Function Parameter Settings
Functions A8UÃXrhxÃDsrrq Echo release by earth fault protection (refer also to Figure 6-78) „1“ ECHO only ≥1 ECHO and TRIP Dist. OFF/BLOCK & ≥1 O/C VTsec lost & O/C OFF/BLOCK !$! Uv€rÃ9@G6`Ã !$" U…vƒÃ@YU@ITDPIÃ ≥1 ≥1 Dis. PICKUP & & ≥1 ECHO SIGNAL 4246...
Page 280 Functions − 3LORW :LUH &RPSDULVRQ = Pilot wire comparison with control wires, as referred to in Sub-section 6.4.1.10, − 5HYHUVH ,QWHUORFNLQJ = Reverse interlocking with control wires, as referred to in Sub-section 6.4.1.11. In address )&7 7HOHS 'LV the application of a teleprotection scheme can be switched 21 or 2)).
Page 281 Functions With the release delay 5HOHDVH 'HOD\ (address ) the release of the zone Z1B can be delayed. This is only necessary for the blocking scheme %ORFNLQJ, to allow sufficient transmission time for the blocking signal during external faults. This delay only has an effect on the receive circuit of the teleprotection;...
Page 282: Settings
Functions 6.4.3 Settings Addr. Setting Title Function Setting Options Default Setting 2101 FCT Telep. Dis. Teleprotection for Dis- tance prot. 2102 Type of Line Teleprotection for Dis- Two Terminals Two Terminals tance prot. Three Terminals 2103A Send Prolong. Teleprotection for Dis- 0.00..30.00 sec 0.05 sec tance prot.
Page 283 Functions F.No. Alarm Comments 4054 Dis.T.Carr.rec. Dis. Telep. Carrier signal received 4055 Dis.T.Carr.Fail Dis. Telep. Carrier CHANNEL FAILURE 4056 Dis.T.SEND Dis. Telep. Carrier SEND signal 4057 Dis.T.SEND L1 Dis. Telep. Carrier SEND signal, L1 4058 Dis.T.SEND L2 Dis. Telep. Carrier SEND signal, L2 4059 Dis.T.SEND L3 Dis.
Page 284: Earth Fault Protection In Earthed Systems
Functions Earth Fault Protection in Earthed Systems General In earthed systems, where extremely large fault resistance may exist during earth faults (e.g. overhead lines without earth wire, sandy soil, or high tower footing resistance) the fault detection of the distance protection will often not pick up because the resulting earth fault impedance could be outside the fault detection characteristic of the distance protection.
Page 285 Functions current transformers connected in a star arrangement must be available and connected. Definite Time Very The earth current I = 3I is passed through a numerical filter and then compared with the set value ,!!!. If this value is exceeded and alarm is issued. After the High Set Current corresponding delay times 7 ,!!! have expired, a trip command is issued which Stage 3I...
Page 286: Time Overcurrent Protection
Functions Definite Time The logic of the overcurrent stage 3I > is the same as that of the 3I >>>–stage. 3I0>>> is therefore replaced with ,!, then, Figure 6-61 also applies for 3I Overcurrent >. Stage 3I > This stage operates with a specially optimized digital filter that completely suppresses all harmonic components beginning with the 2nd harmonic.
Page 287 Functions Inverse Time The inverse logarithmic characteristic differs from the other inverse characteristics Overcurrent Stage mainly by the fact that the shape of the curve can be influenced by a number of parameters. The slope ,S 7LPH 'LDO and a time shift 7 ,3PD[ which directly with Inverse Logarithmic affect the curve, can be changed.
Page 288 Functions Figure 6-64 illustrates the functional principle. The tripping time depends on the level of the zero sequence voltage U . For meshed earthed systems the zero sequence voltage increases towards the earth fault location. The inverse characteristic results in the shortest command time for the relay closest to the fault.
Page 289 Functions "V3VÃv‰ FNr 1357 > EF 3I0p Pickup "DƒÃQD8FVQ UÃs‚…ÃVv‰ Vv‰Ã€vv€ˆ€ > & FNr 1309 & 3@AÃUryrÃ7GÃ 3I0p InrushBlk & <HV UÃ…r‰ÃVv‰ inrush stabilization FNr 1369 ≥1 & EF 3I0p TRIP "DƒÃUryrƒ7D <HV ≥1 FNr 1310 permissive...
Page 290 Functions Inrush Stabilization If the device is applied to a transformer feeder, large inrush currents can be expected when the transformer is energized; if the transformer star-point is earthed, also in the zero sequence path. The inrush current may be a multiple of the rated current and flow for several tens of milliseconds up to several minutes.
Page 291 Functions „forward“ = 3U α = – 3I β „reverse“ Figure 6-67 Directional characteristic using I as polarization quantity For the determination of direction a minimum current and a minimum polarization quantity is required. The minimum polarizing voltage set as 8!. If the displacement voltage is too small, the direction can only be determined if it is polarized with the transformer star-point current and this exceeds a minimum value corresponding to the setting ,<!.
Page 292: Applying The Function Parameter Settings
Functions The instantaneous tripping following manual closure is blocked as long as the inrush- stabilization recognizes a rush current. This prevents instantaneous tripping by a stage which, under normal conditions, is sufficiently delayed during energization of a transformer. 6.5.2 Applying the Function Parameter Settings During the configuration of the device functions (refer to Section 5.1, address (DUWK )DXOW 2&) it was determined which characteristics of the overcurrent time protection would be available.
Page 293 Functions ,S 3,&.83 then determines the current pick-up threshold and address ,S 0D[7'(/$< the definite time delay. The values for the time delay settings 7 ,!!! (address ), 7 ,!! (address ) and 7 ,! (address ) are derived from the earth fault grading coordination diagram of the system.
Page 294 Functions For the inverse time overcurrent stage 3I it is possible to select from a variety of curves depending on the version of the relay and the configuration (Section 5.1, address ) that was selected. If an inverse overcurrent stage is not required, the address is set to (DUWK )DXOW 2&...
Page 295 Functions "DƒÃHh‘U9@G6` "DƒÃUv€rÃ9vhy "DƒÃHvU9@G6` "DƒÃT‡h…‡ƒ‚v‡ "DƒÃQD8FVQ Figure 6-68 Setting parameter characteristics in the logarithmic–inverse curve For the zero sequence voltage controlled stage (address (DUWK )DXOW 2& Zero Sequence = 8 LQYHUVH) the operating mode is initially set: address 2S PRGH ,S. Voltage Stage with This stage can be set to operate )RUZDUG (usually towards line) or 5HYHUVH (usually Inverse...
Page 296 Functions 3 × 8LQY PLQLPDO D = 3 × 8LQY PLQLPDO 8!8 LQY Figure 6-69 Characteristic settings of the zero sequence voltage time dependent stage — without additional times. Direction The direction of each required stage was already determined when setting the Determination different stages.
Page 297 Functions The position of the directional characteristic is determined with the setting parameters 'LU $/3+$ and 'LU %(7$ (addresses und ). As these set values are not critical, the pre-settings may be left unchanged. This setting can only be changed ®...
Page 298 Functions Switching on to a It is possible to determine with a setting which stage trips without delay following closure onto a dead fault. The stages have the setting parameters ,!!!627) Dead Earth Fault 7ULS (address ), ,!! 627)7ULS (address ), ,! 627)7ULS (address ) and if required ,S 627)7ULS (address ), which must accordingly be set for each stage to either <HV or 1R.
Page 299: Settings
Functions 6.5.3 Settings Note: The indicated secondary current values for setting ranges and default settings refer to I = 1 A. For the nominal current 5 A the current values are to be multiplied by 5. Addr. Setting Title Setting Options Default Setting Comments 3101...
Page 300 Functions 3172 SOTF Op. Mode with Pickup (non-directional) with Pickup and Instantaneous mode after with Pickup and direction direction SwitchOnToFault 3173 SOTF Time DELAY 0.00..30.00 sec 0.00 sec Trip time delay after SOTF 3110 Op. mode 3I0>>> Forward Inactive Operating mode Reverse Non-Directional Inactive...
Page 301 Functions Addr. Setting Title Setting Options Default Setting Comments 3141 3I0p PICKUP 0.003..25.000 A 1.000 A 3I0p Pickup 3142 3I0p MinT-DELAY 0.00..30.00 sec 1.20 sec 3I0p Minimum Time Delay 0.05..3.00 sec; ∞ 3143 3I0p Time Dial 0.50 sec 3I0p Time Dial 0.50..15.00;...
Page 302: Information Overview
Functions Addr. Setting Title Setting Options Default Setting Comments 3165 IY> 0.05..1.00 A 0.05 A Min. earth current IY for polariz- 3166 3U2> 0.5..10.0 V 0.5 V Min. neg. seq. polarizing volt- age 3U2 3167 3I2> 0.05..1.00 A 0.05 A Min.
Page 303: Earth Fault Protection Teleprotection Schemes
Functions Earth Fault Protection Teleprotection Schemes With the aid of the integrated comparison logic, the directional earth fault protection according to Section 6.5 can be expanded to a directional comparison protection scheme. One of the stages which must be directional and set )RUZDUG is used for the Teleprotection Methods directional comparison.
Page 304: Method Of Operation
Functions 6.6.1 Method of Operation Switching On and The teleprotection function can be switched on and off by means of the parameter )&7 7HOHS (), or via the system interface (if available) and via binary inputs (if these are allocated). The switched state is saved internally (refer to Figure 6-70) and secured against loss of auxiliary supply.
Page 305 Functions Sequence Figure 6-72 shows the logic diagram of the directional comparison scheme for one line end. The directional comparison only functions for faults in the “forward” direction. Accordingly the overcurrent stage intended for operation in the direction comparison mode must definitely be set to )RUZDUG (, ',5(&7,21); refer also to Sub- section 6.5.2 under the margin heading “Teleprotection with Earth Fault Protection”.
Page 306: Directional Unblocking Scheme
Functions 6.6.1.2 Directional Unblocking Scheme Principle The unblocking method is a permissive scheme. The difference to the Directional Comparison Scheme (Sub-section 6.6.1.1) lies in that tripping is also possible when no permissive signal from the opposite line end is received. Accordingly it is mainly used on long lines where the signal is transmitted via the protected feeder by means of power line carrier (PLC) and the attenuation in the signal transmission path at the fault location can be so severe that reception of the signal from the opposite line end...
Page 307 Functions &RQILJ (address ), the device is informed as to whether it has one or two opposite line ends. If the unblock frequency f is received without interference — in the case of three terminal lines both receive signals combined by AND — it is used to release tripping. If the transmitted signal does not reach the other line end because the short circuit on the protected feeder causes too much attenuation or reflection of the transmitted signal, the unblock logic takes effect: neither the unblock signal “>() 8% XE ”...
Page 308: Directional Blocking Scheme
Functions 1381 EF Telep. OFF EF Telep. off ≥1 ≥1 1313 >EF TeleprotBLK & Transient blocking "!" TrqÃQ…‚y‚tÃ Trip command & & ≥1 1384 EF Tele SEND EF forward & EF Pickup 1320 >EF UB ub 1 & ≥1 Echo function &...
Page 309 Functions (u,i) (u,i) 40 ms 40 ms E/F. E/F. forwd. forwd. ≥1 ≥1 transm. transm. & & 3I0 Min 3I0 Min Telep. Telep. & & trip trip rec. rec. EF/FD = Pickup by any E/F stage Figure 6-75 Operation scheme of the directional blocking method Sequence Figure 6-76 shows the logic diagram of the blocking scheme for one line end.
Page 310: Transient Blocking
Functions 1381 EF Telep. OFF EF Telep. off ≥1 1313 >EF TeleprotBLK & EF TeleTransBlk (u,i) 1390 EF Tele BL Jump 40 ms "!" TrqÃQ…‚y‚tÃ & 3IoMin Teleprot 1384 EF Tele SEND & EF forward & 1384 EF Tele BL STOP &...
Page 311: Measures For Weak Or Zero Infeed
Functions EF Telep. off ≥1 & 1386 EF TeleTransBlk 1313 >EF TeleprotBLK "!( U…7yxÃXhv‡ÃUv€r transient EF Pickup & blocking Figure 6-72 EF forward or 6-74 "! U…7yxÃ7y‚pxUv€r directional comparison and directional unblocking Figure 6-77 Transient blocking for a schemes 6.6.1.5 Measures for Weak or Zero Infeed On lines where there is only a single sided infeed or where the system starpoint is only...
Page 312 Functions circuit breaker at the non-feeding line end is open, this delay of the echo signal is not required. The echo delay time may then be bypassed. The circuit breaker switching state is provided by the central information function control. (refer to Section 6.20). The echo impulse is then transmitted (alarm output “(&+2 6,*1$/”), the duration of which can be set with the parameter 7ULS (;7(16,21.
Page 313: Applying The Function Parameter Settings
Functions 6.6.2 Applying the Function Parameter Settings General The teleprotection supplement for earth fault protection is only operational if it was set to one of the available modes during the configuration of the device (address ). Depending on this configuration, only those parameters which are applicable to the selected mode appear here.
Page 314 Functions from A is distributed equally on the line ends B and C. The setting value ,R0LQ 7HOHSURW (address ), which is decisive for the echo or the blocking signal, must therefore be set smaller than one half of the setting value for the earth current stage used for teleprotection.
Page 315 Functions The transient blocking time 7U%ON %ORFN7LPH (address ) must definitely be set longer than the duration of severe transients resulting from the inception or clearance of external faults. The transmit signal is delayed by this time in the case of the permissive protection schemes 'LU&RPS3LFNXS and 81%/2&.,1* if the protection had initially detected a reverse fault.
Page 316: Settings
Functions 6.6.3 Settings Addr. Setting Title Setting Options Default Setting Comments 3201 FCT Telep. E/F Teleprotection for Earth Fault O/ 3202 Line Config. Two Terminals Two Terminals Line Configuration Three Terminals 3203A Send Prolong. 0.00..30.00 sec; Ø 0.05 sec Time for send signal prolonga- tion 3207A Delay for alarm...
Page 317: Weak-Infeed Tripping
Functions Weak-Infeed Tripping 6.7.1 Method of Operation In cases, where there is no or only weak infeed present at one line end, the distance protection does not pick up there during a short-circuit on the line. If there is no or only a very small zero sequence current at one line end during an earth fault, the earth fault protection can also not function.
Page 318 Functions A8UÃXrhxÃDsrrq ECHO only „1“ ECHO and TRIP & >BLOCK Weak Inf 4203 !$$ VI9@SWPGU Undervoltage & CB closed L1 PICKUP L1 & 4232 W/I Pickup L1 & !$$ VI9@SWPGU & ≥1 & CB closed L2 PICKUP L2 & 4233 W/I Pickup L2 &...
Page 319: Applying The Function Parameter Settings
Functions To avoid a faulty pick up of the weak infeed function following tripping of the line and reset of the fault detection, the function cannot pick up any more once a fault detection in the affected phase was present (RS flip-flop in Figure 6-81). In the case of the earth fault protection, the release signal is routed via the phase segregated logic modules.
Page 320: Settings
Functions 6.7.3 Settings Addr. Setting Title Setting Options Default Setting Comments 2501 FCT Weak Infeed Echo only Weak Infeed function is Echo only Echo and Trip 2502A Trip/Echo DELAY 0.00..30.00 sec; Ø 0.04 sec Trip / Echo Delay after carrier receipt 2503A Trip EXTENSION...
Page 321: External Direct And Remote Tripping
Functions External Direct and Remote Tripping 6.8.1 Method of Operation External Trip of the Any signal from an external protection or monitoring device can be coupled into the Local Circuit signal processing of the 7SA6 by means of a binary input. This signal may be delayed, Breaker alarmed and routed to one or several output relays.
Page 322: Settings
Functions 6.8.2 Applying the Function Parameter Settings A prerequisite for the application of the direct and remote tripping functions is that during the configuration of the scope of functions in the device (Section 5.1) the setting in address '77 'LUHFW 7ULS = (QDEOHG was applied. In address '77 'LUHFW 7ULS 21 or 2)), it is furthermore possible to switch the function on or off.
Page 323 Functions Overcurrent Protection General Overcurrent protection is integrated in the 7SA6 device. This function may optionally be used either as back-up time delayed overcurrent protection or as emergency overcurrent protection. Whereas the distance protection can only function correctly if the measured voltage signals are available to the device, the emergency overcurrent protection only requires the currents.
Page 324: Method Of Operation
Functions 6.9.1 Method of Operation Measured Values The phase currents are fed to the device via the input transformers of the measuring input. The residual current 3·I is either measured directly or calculated from the phase currents, depending on the ordered device version and usage of the fourth current input I of the device.
Page 325 Functions I>> Anr L1 Dƒu33 !% UÃDƒu33Ã I>> Pickup L1 I>> Pickup L2 I>> Pickup L3 & Iph> ≥1 I>> Trip L1 I>> Trip L2 I>> Trip L3 & !% ! "D33 !% " UÃ"D33 I>> Pickup E & 3I0>>...
Page 326 Functions D@8Ã8ˆ…‰r 2660 UÃDƒÃUv€rÃ9vhy !%# DQÃ 2642 Ip Pickup L1 Ip Pickup L2 Ip Pickup L3 & ≥1 Ip Trip L1 Ip Trip L2 Ip Trip L3 !%#% UÃDƒÃ6qq & !%$ "DƒÃQD8FVQÃ UÃ"DƒÃUv€rÃ9vhy 2652 3I0p Pickup & ≥1 3I0p Trip UÃ"DƒÃ6qq 2656 &...
Page 327 Functions Stub Protection A further overcurrent stage is the stub protection. It can however also be used as a normal additional definite time overcurrent stage, as it functions independent of the other stages. A stub fault is a short-circuit located between the current transformer set and the line isolator.
Page 328 Functions Dƒu3ÃTUV7 !%" UÃDƒuÃTUV7 !%" I-STUB Pickup L1 I-STUB Pickup L2 I-STUB Pickup L3 & ≥1 I-STUB Trip L1 I-STUB Trip L2 I-STUB Trip L3 & !%"! "D3ÃTUV7 !%"" UÃ"D3ÃTUV7 I-STUB Pickup E & ≥1 I-STUB Trip E 7131 >I-STUB ENABLE &...
Page 329 Functions Table 6-10 Fault detection annunciations of the overcurrent protection Internal event Figure Output alarm 2& 3LFNXS / I>> Pickup L1 6-83 7162 I> Pickup L1 Ip Pickup L1 6-84 I-STUB Pickup L1 6-86 2& 3LFNXS / I>> Pickup L2 6-83 7163 I>...
Page 330: Applying The Function Parameter Settings
Functions 6.9.2 Applying the Function Parameter Settings General During the configuration of the device scope of functions (refer to Section 5.1, address ) it was determined which characteristics are to be available. Only those parameters that apply to the available characteristics, according to the selected configuration and the version of the device, are accessible in the procedures described below.
Page 331 Functions s (length) = 60 km = 0,19 Ω/km = 0,42 Ω/km Short circuit power at the beginning of the line: ’ = 2,5 GVA current transformers600 A/5 A The line impedance Z and source impedance Z are calculated with these values as follows: /s = √0.19 Ω/km = 0.46 Ω/km...
Page 332 Functions approximately 10 %, on transformers and motors approximately 20 % above the maximum expected (over-)load current. ® When using a personal computer and DIGSI 4 to apply the settings, these can be optionally entered as primary or secondary values. When applying the setting parameters as secondary values, the primary currents must be converted to the secondary side of the current transformer.
Page 333 Functions Inverse Time In the case of the inverse time overcurrent stages, various characteristics can be Overcurrent Stages selected, depending on the version of the device and the configuration (Section 5.1, address ). For the IEC–curves (address %DFN8S 2& = 72& ,(&) the IP, 3I0P following are available in address ,(&...
Page 334 Functions Inverse Time In the case of the inverse time overcurrent stages, various characteristics can be Overcurrent Stages selected, depending on the version of the device and the configuration (Section 5.1, address ). For the ANSI–curves (address %DFN8S 2& = 72& $16,) the IP, 3I0P with following are available in address $16, &XUYH: ANSI–curves...
Page 335: Settings
Functions When using the I STUB protection the pick-up thresholds ,SK! 678% (address ) Stub Protection and ,! 678% (address ) are usually not critical, as this protection function is only activated when the line isolator is open which implies that every measured current should represents a fault current.
Page 336: Information Overview
Functions Addr. Setting Title Setting Options Default Setting Comments 2624 I> Telep/BI Instantaneous trip via Teleprot./ 2625 I> SOTF Instantaneous trip after Switch- OnToFault 0.10..4.00 A; ∞ ∞ A 2640 Ip> Ip> Pickup 0.05..3.00 sec; ∞ 2642 T Ip Time Dial 0.50 sec T Ip Time Dial 0.50..15.00;...
Page 337 Functions F.No. Alarm Comments 7106 >BLOCK O/C Ip >BLOCK Backup OverCurrent Ip 7110 >O/C InstTRIP >Backup OverCurrent InstantaneousTrip 7130 >BLOCK I-STUB >BLOCK I-STUB 7131 >I-STUB ENABLE >Enable I-STUB-Bus function 7151 O/C OFF Backup O/C is switched OFF 7152 O/C BLOCK Backup O/C is BLOCKED 7153 O/C ACTIVE...
Page 338 Functions F.No. Alarm Comments 7221 O/C TRIP I>> Backup O/C TRIP I>> 7222 O/C TRIP I> Backup O/C TRIP I> 7223 O/C TRIP Ip Backup O/C TRIP Ip 7235 I-STUB TRIP O/C I-STUB TRIP 2054 Emer. mode Emergency mode 6-156 7SA6 Manual C53000-G1176-C133-1...
Page 339: High-Current Switch-On-To-Fault Protection
Functions 6.10 High-Current Switch-On-To-Fault Protection 6.10.1 Method of Operation General The high-current switch-on-to-fault protection is intended to trip immediately and instantaneously following energization of a feeder onto a fault with large fault current magnitude. It is primarily used as fast protection in the event of energizing the feeder while the earth switch is closed, but can also be used every time the feeder is energized —...
Page 340: Applying The Function Parameter Settings
Functions 6.10.2 Applying the Function Parameter Settings A prerequisite for the operation of the switch-on-to-fault protection is that in address 627) 2YHUFXUU = (QDEOHG was set during the configuration of the device scope of functions (Section 5.1). It is furthermore possible to switch the function, in address , 627) 2YHUFXUU 21 or 2)).
Page 341: Method Of Operation
Functions 6.11 Earth Fault Detection in Non-earthed Systems 6.11.1 Method of Operation General In systems whose starpoint is either non-earthed or earthed through an arc suppression coil (Petersen coil), single phase earth faults will not be detected by the short circuit protection, since no significant earth fault current flows. Furthermore, since network operation is not immediately affected by an earth fault (the voltage triangle is maintained, Figure 6-88) rapid disconnection is not normally desired.
Page 342 Functions Sensitive Earth The direction of the earth fault can be determined from the direction of the earth fault Fault Directional current in relation to the displacement voltage. The only restriction is that the active or Determination reactive current components must be available with sufficient magnitude at the point of measurement.
Page 343 Functions Since the active and reactive component of the current – not the power – determine the earth fault directional decision, these current components are calculated from the power components. Thus for determination of the direction of the earth fault, active and reactive components of the earth fault current as well as the direction of the active and reactive power are evaluated.
Page 344: Applying The Function Parameter Settings
Functions In meshed or ring networks the measuring points at the ends of the faulted cable also see a maximum of earth fault (capacitive or ohmic) current. Only in this cable will the direction “forwards” be indicated on both line ends (Figure 6-91). The remaining directional indications in the network can aid location of the earth fault.
Page 345 Functions Voltage Settings The displacement voltage is the pickup threshold of the earth fault detection and is set in address 8!. If the displacement voltage U of the voltage transformer set is directly connected to the fourth voltage measuring input U of the device and if this was predefined during the configuration, the device will use this voltage, multiplied by the factor 8SK 8GHOWD (address ).
Page 346 Functions Cable 1 Cable 2 12.5 Cable 3 2.6 km Cable 4 12.5 Cable 5 3.4 km Cable 6 3.4 km Cable 7 2.6 km Total 25.0 km 62.5 With an earth fault in cable 2, 62.5 A – 12.5 A = 50 A earth fault current will flow through the measuring point, since 12.5 A flows directly from cable 2 into the fault.
Page 347: Settings
Functions (UU ) (address ) of the c.t. with its associated current &7 (UU , (address ) as well as a further c.t. operating point &7 (UU )/&7 (UU , (address and ), above which the angle displacement remains practically constant (see Figure 6-92), are set.
Page 348: Information Overview
Functions 6.11.4 Information Overview F.No. Alarm Comments 1251 >SensEF on >Switch on sensitive E/F detection 1252 >SensEF off >Switch off sensitive E/F detection 1253 >SensEF block >Block sensitive E/F detection 1260 SensEF on/offBI Sensitve E/F detection ON/OFF via BI 1261 SensEF OFF Sensitve E/F detection is switched OFF 1262...
Page 349: Automatic Reclosure Function
Functions 6.12 Automatic Reclosure Function Experience shows that about 85 % of the arc faults on overhead lines are extinguished automatically after being tripped by the protection. The line can therefore be reclosed. Reclosure is performed by an automatic reclosure function (AR). An example of the normal time sequence of a double-shot reclosure is shown in Figure 6-93.
Page 350: Method Of Operation
Functions 6.12.1 Method of Operation The integrated automatic reclosure circuit allows up to 8 reclosure attempts. The first four interrupt cycles may operate with different parameters (action and dead times, single/three-pole). The parameters of the fourth cycle also apply for the fifth cycle and onwards.
Page 351 Functions Mixed Lines On mixed lines with cables and overhead lines, it is possible to use the distance zone Overhead Line/ signals for distinguishing between cable and overhead line faults to a certain extent. Cable The automatic reclosure can then be blocked by appropriate signals generated by means of the user-programmable logic functions (CFC) if there is a fault in the cable section.
Page 352 Functions reclose cycles are executed depending on the time used by the protection function to trip. Example 1: 3 cycles are set. At least the first cycle is configured to start the recloser (allowed to be the first cycle that is carried out). The action times are set as follows: $5 7$&7,21 = 0.2 s;...
Page 353 Functions cycles. If blocking takes place while the cycle concerned is already running, this leads to aborting of the reclosure, i.e. no reclosure takes place even if other valid cycles have been parameterized. Internal blocking signals, with a limited duration, arise during the course of the reclose cycles: The reclaim time 75(&/$,0 is initiated along with every automatic reclosure command.
Page 354 Functions binary inputs (“!&% 3ROH /”, F.No. , “!&% 3ROH /”, F.No. and “!&% 3ROH /”, F.No. ) for each pole. If in stead of the individual pole auxiliary contacts, the series connection of the normally open and normally closed contacts are used (the normal state applies when the CB is open), the CB is assumed to have all three poles open when the series connection of the normally closed contacts is closed (binary input “!&% S 2SHQ”, F.No.
Page 355 Functions The sequence described above applies to a single reclosure cycle. In the 7SA6 multiple reclosure (up to 8 cycles) is also possible (see below). Sequence of a Single-pole reclose cycles are only possible with the appropriate device version and if this was selected during the configuration of the protection functions (address , Single-pole Reclose Cycle...
Page 356 Functions (adjustable) reclaim time is started. If the reclosure is blocked during the dead time following a single-pole trip, optional immediate three-pole tripping can take place (Forced Three-pole Trip, page 6-186). If the fault is cleared (successful reclosure), the reclaim time expires and all functions return to their quiescent state.
Page 357 Functions a) (9 )/7 02'( blocks AR : The reclosure is blocked as soon as an sequential fault is detected. Tripping as a result of the sequential fault is three-pole. This applies irrespective of whether three- pole cycles are permitted or not. There are no further reclosure attempts; the automatic reclosure function is blocked dynamically (see also above under subtitle “Reclose Block”, page 6-170).
Page 358 Functions Line A–B is tripped at both ends. There is therefore no voltage here, this identifies the line at both ends as the faulted one. The normal dead time comes into service here. A, B, C busbars I, II, III relay locations tripped circuit-breakers Figure 6-95 Example of a reduced dead time (RDT)
Page 359 Functions (defined dead times) (ADT) A, B, C busbars I, II, III relay locations tripped circuit-breakers Figure 6-96 Example of adaptive dead time (ADT) As is shown by the example, the adaptive dead time has the following advantages: • The circuit-breaker at position II is not reclosed at all if the fault persists and is therefor not unnecessarily stressed.
Page 360 Functions the case of single-phase faults; in the event of multiple phase faults these stages do not operate. This input is not required if no overreaching stage is used (e.g. differential protection or comparison mode with distance protection, see also above under subtitle “Selectivity before Reclosure”).
Page 361 Functions external 7SA6 reclosure–device Sryh’ÃQD8FVQ Sryh’ÃUSDQÃ"ƒu Sryh’ÃUSDQÃ ƒG Sryh’ÃUSDQÃ"ƒu Sryh’ÃUSDQÃ ƒG! Sryh’ÃUSDQÃ"ƒu Relay TRIP 1pL3 L– >Enable ARzones >1p Trip Perm >Only 1ph AR L– L– 3-pole 1-pole 1-/3-pole Selector switch Figure 6-97 Connection example with external reclosure device for 1-/3-pole reclosure with mode selector switch external 7SA6...
Page 362 Functions The binary inputs and outputs provided for this functionality must be considered in this case. It must be decided whether the internal automatic reclosure function is to be controlled by the fault detection (pickup) or by the trip command of the external protection (see also above under “Operating Modes of the Automatic Reclosure Function”, page 6-170).
Page 363 Functions !7ULS SROH $5 trip command 3-pole for the internal automatic reclosure function, If only three-pole reclose cycles are to be executed, it is sufficient to assign the binary input “!7ULS SROH $5” (F.No ) for the trip signal. Figure 6-100 shows an example.
Page 364 Functions external protection. The general trip command then suffices for tripping (F.No ). Figure 6-101 shows connection examples. external 7SA6 protection device 3QvpxˆƒÃG Ã6S Pick-up L1 3QvpxˆƒÃG!Ã6S Pick-up L2 3QvpxˆƒÃG"Ã6S Pick-up L3 3U…vƒÃs‚…Ã6S Tripping L– AR 1.CycZoneRel Release AR Stage (if nec.
Page 365 Functions “Forced Three-pole Trip”, page 6-186). An external automatic three-pole coupling is therefore not necessary when the above conditions are satisfied. This rules out two- pole tripping under all circumstances. Second protection 7SA6 internal automatic reclosure AR function !$5 6WDUW $5 6WDUW !7ULS / $5 Trip L1...
Page 366: Setting The Function Parameters
Functions 6.12.2 Setting the function parameters General If no reclosure is required on the feeder to which the distance protection 7SA6 is applied (e.g. for cables, transformers, motors or similar), the automatic reclosure function must be removed during configuration of the device (see Section 5.1, address ).
Page 367 Functions A few seconds are generally sufficient. In regions with frequent storms and thunderstorms a shorter reclaim time is advisable to reduce the risk of a final trip due to repeated lightning strikes or cable flashovers. A long reclaim time must be selected in conjunction with multiple reclosure (see above) if the circuit-breaker can not be monitored (e.g.
Page 368 Functions energy transport until the remote end has also closed. This delay must therefore be added to the dead time for consideration of the network stability. Configuration of This configuration concerns the interaction between the protection and supplementary the Automatic functions of the device and the automatic reclosure function.
Page 369 Functions earth,above which the line is considered to be fault-free. It must be set smaller than the smallest expected operating voltage. The setting is applied in Volts secondary. This value can be entered as a primary value when parametrizing with a PC and ®...
Page 370 Functions ready for a CLOSE–TRIP–cycle. The maximum extension is by the circuit-breaker– monitoring time; which was set for all reclosure cycles under address (see above). Details about the circuit-breaker–monitoring can be found in the function description, section 6.12.1, under subtitle “Interrogation of Circuit-Breaker Ready”, page 6-171.
Page 371 Functions If only single-pole reclose cycle are to be allowed, the dead time for three-pole tripping must be set to ∞. If only three-pole reclose cycle are to be allowed, the dead time for single-pole tripping must be set to ∞; the protection then trips three-pole for all fault types.
Page 372 Functions For the 2nd cycle: Address $5 67$57; determines if starting in 2nd cycle is allowed at all Address $5 7$&7,21; action time for the 2nd cycle Address $5 7GHDG )OW; dead time after 1-phase starting Address $5 7GHDG )OW; dead time after 2-phase starting Address $5 7GHDG )OW;...
Page 373: Settings
Functions 6.12.3 Settings Addr. Setting Title Setting Options Default Setting Comments 3401 AUTO RECLOSE Auto-Reclose function 3402 CB? 1.TRIP CB ready interrogation at 1st trip 3403 T-RECLAIM 0.50..300.00 sec 3.00 sec Reclaim time after successful AR cycle 3404 T-BLOCK MC 0.50..300.00 sec;...
Page 374 Functions Addr. Setting Title Setting Options Default Setting Comments 0.01..1800.00 sec; ∞ 3456 1.AR Tdead1Trip 1.20 sec Dead time after 1pole trip 0.01..1800.00 sec; ∞ 3457 1.AR Tdead3Trip 0.50 sec Dead time after 3pole trip 3458 1.AR: Tdead EV. 0.01..1800.00 sec 1.20 sec Dead time after evolving fault 3459...
Page 375: Information Overview
Functions Addr. Setting Title Setting Options Default Setting Comments 0.01..1800.00 sec; ∞ 3490 4.AR Tdead3Trip 0.50 sec Dead time after 3pole trip 3491 4.AR: Tdead EV. 0.01..1800.00 sec 1.20 sec Dead time after evolving fault 3492 4.AR: CB? CLOSE CB ready interrogation before reclosing 3493 4.AR SynRequest...
Page 376 Functions information indicates which cycle will be run next. For example, external protection functions can use this information to release accelerated or overreaching trip stages prior to the corresponding reclose cycle. “$5 LV EORFNHG” (F.No. ) The automatic reclosure is blocked (e.g. circuit-breaker not ready). This information indicates to the operational information system that in the event of an upcoming system fault there will be a final trip, i.e.
Page 377 Functions F.No. Alarm Comments 2740 >BLK 2phase AR >AR: Block 2phase-fault AR-cycle 2741 >BLK 3phase AR >AR: Block 3phase-fault AR-cycle 2742 >BLK 1.AR-cycle >AR: Block 1st AR-cycle 2743 >BLK 2.AR-cycle >AR: Block 2nd AR-cycle 2744 >BLK 3.AR-cycle >AR: Block 3rd AR-cycle 2745 >BLK 4.-n.
Page 378 Functions F.No. Alarm Comments 2851 AR CLOSE Cmd. AR: Close command 2852 AR Close1.Cyc1p AR: Close command after 1pole, 1st cycle 2853 AR Close1.Cyc3p AR: Close command after 3pole, 1st cycle 2854 AR Close 2.Cyc AR: Close command 2nd cycle (and higher) 2861 AR T-Recl.
Page 379: Synchronism And Voltage Check (Dead-Line / Dead-Bus Check)
Functions 6.13 Synchronism and Voltage Check (Dead-line / Dead-bus check) 6.13.1 Method of Operation General The synchronism and voltage check function ensures, when switching a line onto a bus-bar, that the stability of the network is not endangered. The function can be programmed to perform the synchronism and voltage check for automatic reclosure only, for manual closure only, or for both cases.
Page 380 Functions Bus-bar Transformer line 7SA6 Protection TRIP Discrepancy Sync switch CLOSE Figure 6-104 Synchronism check across a transformer Furthermore, switching is possible with synchronous or asynchronous system conditions. Synchronous switching means that the closing command is given as soon as the critical values (voltage magnitude difference 0D[ 9ROW 'LII, angle difference 0D[ $QJOH 'LII, and frequency difference 0D[ )UHT 'LII) lie within the set tolerances.
Page 381 Functions for these messages is that voltages within the operating range of the relay are available. Operating modes The closing check procedure can be selected from the following operating modes: − 6<1&&+(&. = Release at synchronism, that is, when the critical values 0D[ 9ROW 'LII, 0D[ )UHT 'LII and 0D[ $QJOH 'LII lie within the set limits.
Page 382: Applying The Function Parameter Settings
Functions − Does the angle difference |ϕ – ϕ | lie within the permissible tolerance 0D[ line $QJOH 'LII? A check that the synchronous system conditions are maintained for the minimum duration 7 6<1&67$% is carried out. When the conditions are satisfied for this duration within the synchronous supervision time 76<1 '85$7,21, the closing command is released.
Page 383 Functions 5DWHG )UHTXHQF\ the operating range of the synchronism check is: rated frequency ± 3 Hz; and, if switching at asynchronous system conditions is allowed, 7&% FORVH the closing time of the circuit breaker. Warning! Incorrect synchronization is possible if the closing time of the circuit breaker is not set correctly under the general power system data (Power system data 1, see Sub-section 6.1.1, address ).
Page 384 Functions Addresses to are relevant to the check conditions before automatic Synchronism Check Conditions reclosure of the circuit breaker. When setting the parameters for the internal automatic before Automatic reclosing function (Section 6.12.2) it was decided with which automatic reclosing cycle Reclosure synchronism and voltage check should be carried out.
Page 385 Functions FKHFN, no checks are performed before manual closing. The following parameters are then irrelevant. Address 2SPRGH ZLWK 0& determines whether closing under asynchronous system conditions is allowed. Set this parameter to ZLWK 7&% FORVH, if asynchronous closing shall be allowed; the relay will then consider the circuit breaker closing time before determining the correct instant for the close command.
Page 386: Settings
Functions 6.13.3 Settings Addr. Setting Title Setting Options Default Setting Comments 3501 FCT Synchronism Synchronism and Voltage Check function 3502 Dead Volt. Thr. 1..60 V Voltage threshold dead line / bus (ph-e) 3503 Live Volt. Thr. 20..125 V 90 V Voltage threshold live line / bus (ph-e) 3504...
Page 387: Information Overview
Functions Addr. Setting Title Setting Options Default Setting Comments 3538 MC Usyn< Uline< Dead bus / dead line check before Man.Cl 3539 MC O/RIDE Override of any check before Man.Cl 6.13.4 Information Overview Important information available as output by the device is explained, in so far as it can not be interpreted in the following list and was not described in the foregoing text.
Page 388 Functions F.No. Alarm Comments 2948 Sync. fdiff> Sync. Freq. diff. greater than limit Sync. ϕ-diff> 2949 Sync. Angle diff. greater than limit 2951 Sync. release Synchronism release (to ext. AR) 2961 Sync.CloseCmd Close command from synchro-check 2970 Sync. f-bus>> Sync. Bus frequency > (fn + 3Hz) 2971 Sync.
Page 389: Voltage Protection
Functions 6.14 Voltage Protection General The overvoltage protection avoids stress of electrical equipment by extremely high voltages and the resultant insulation problems. Abnormally high voltages often occur in weak-loaded, long distance transmission lines, in islanded systems when generator voltage regulation fails, or after full load shutdown of a generator and external generators (not connected to the system).
Page 390 Functions "&! Vƒu²r3 "&( Vƒu²r33ÃS@T@U L1-E U> FNo 10242 to 10244 L2-E ≥1 Uph-e>(>) PU L1 L3-E Uph-e>(>) PU L2 Uph-e>(>) PU L3 U>> FNo 10240 Uph-e> Pickup "&# Vƒu²r33 FNo 10245 ≥1 FNo 10201 T Uph-e> TimeOut >Uph-e>(>) BLK UÃVƒu²r3 "&"...
Page 391 Functions FNo 10280 "&"! V 3 U1> Pickup FNo 10282 L1-E Ph–E T U1> TimeOut L2-E U> L3-E UÃV 3 "&"" FNo 10284 ≥1 "&"( V 33ÃS@T@U U1>(>) TRIP UÃV 33 "&"$ FNo 10283 T U1>> TimeOut U>> FNo 10204 FNo 10281 >U1>(>) BLK U1>>...
Page 392 Functions has been signalled via the binary input “!)$,/)HHGHU 97” (internal signal “internal blocking”). The stages of the zero sequence voltage protection are automatically blocked (with the internal automatic reclosure function) during single-pole automatic reclose dead time to avoid pick-up with the false zero sequence values arising during this state. If the device operates with an external automatic reclosure function or if single-pole tripping can be triggered by a different protection system (operating in parallel), the overvoltage protection for the zero sequence system must be blocked via a binary...
Page 393: Undervoltage Protection
Functions 6.14.1.2 Undervoltage Protection Undervoltage Figure 6-108 depicts the logic diagram of the phase voltage stages. The fundamental Phase–Earth frequency is numerically filtered from each of the three measuring voltages so that harmonics or transient voltage peaks are largely harmless. Two threshold stages 8SKH and 8SKH are compared with the voltages.
Page 394 Functions 8VSSTVQÃVƒur1 "&$' „1“ "&$! Vƒu²r1 ≥1 I–REST> L1 I–REST> L2 I–REST> L3 & L1-E U< L2-E FNo 10312 to 10314 ≥1 L3-E Uph-e<(<) PU L1 & Uph-e<(<) PU L2 U<< Uph-e<(<) PU L3 FNo 10310 "&$# Vƒu²r11 Uph-e< Pickup FNo 10315 ≥1 FNo 10206...
Page 395 Functions The resulting single–phase AC voltage is fed to the two threshold stages 8 and 8 (see Figure 6-109). Combined with the associated time delays 7 8 and 7 8 these stages form a two-stage undervoltage protection for the positive sequence system.
Page 396 Functions voltages; the symmetrical negative sequence system can also be used for overvoltage. Any combination is possible. Detection procedures that are not required are switched 2II. The phase voltage protection stages can be switched 2Q or 2II in address Overvoltage 8SKH!!.
Page 397 Functions the other being 8!! (address ) with a short delay time 7 8!! (address ) for high asymmetrical voltages. Note that the negative sequence system is established according to its defining ⋅|U ⋅U equation U + a⋅U |. For symmetrical voltages and two exchanged phases this is equivalent to the phase–to–earth voltage value.
Page 398 Functions case of severe voltage drops the 8SKH stage (address ) with a time delay 7 8SKH (address ) is active. The setting of voltage and time values depends on the intended use, that is why general setting recommendations cannot be given. With regard to load shedding, for example, the values mostly depend on a priority grading schedule.
Page 399: Settings
Functions 6.14.3 Settings Addr. Setting Title Setting Options Default Setting Comments 3701 Uph-e>(>) Operating mode Uph-e overvolt- Alarm Only age prot. 3702 Uph-e> 1.0..170.0 V 85.0 V Uph-e> Pickup 3703 T Uph-e> 0.00..30.00 sec; Ø 2.00 sec T Uph-e> Time Delay 3704 Uph-e>>...
Page 400: Information Overview
Functions Addr. Setting Title Setting Options Default Setting Comments 3745 T U2>> 0.00..30.00 sec; Ø 1.00 sec T U2>> Time Delay 3749A U2>(>) RESET 0.50..0.98 0.98 U2>(>) Reset ratio 3751 Uph-e<(<) Operating mode Uph-e under- Alarm Only voltage prot. 3752 Uph-e<...
Page 401 Functions F.No. Alarm Comments 10208 >U1<(<) BLK >BLOCK U1<(<) Undervolt (positive seq.) 10215 Uph-e>(>) OFF Uph-e>(>) Overvolt. is switched OFF 10216 Uph-e>(>) BLK Uph-e>(>) Overvolt. is BLOCKED 10217 Uph-ph>(>) OFF Uph-ph>(>) Overvolt. is switched OFF 10218 Uph-ph>(>) BLK Uph-ph>(>) Overvolt. is BLOCKED 10219 3U0>(>) OFF 3U0>(>) Overvolt.
Page 402 Functions F.No. Alarm Comments 10272 3U0> TimeOut 3U0> TimeOut 10273 3U0>> TimeOut 3U0>> TimeOut 10274 3U0>(>) TRIP 3U0>(>) TRIP command 10280 U1> Pickup U1> Pickup 10281 U1>> Pickup U1>> Pickup 10282 U1> TimeOut U1> TimeOut 10283 U1>> TimeOut U1>> TimeOut 10284 U1>(>) TRIP U1>(>) TRIP command 10290 U2>...
Page 403: Fault Location
Functions 6.15 Fault Location Measurement of the distance to fault in the event of a short circuit is an important supplement to the protection functions. The availability of the line for transmission of energy in the system can be increased by a more rapid determination of the fault location and repair of any resultant damage.
Page 404 Functions • the distance to fault d in % of the line length, calculated based on the set reactance per unit length and the set line length. The fault location indicated in per cent can, at the same time, be output as BCD-code (Binary Coded Decimal).
Page 405 Functions Correction of When faults occur on loaded lines fed from both ends (Figure 6-110), the fault voltage Measured Values is influenced not only by the source voltage E but also by the source voltage E for Load Current on when both voltages are applied to the common earth resistance R .
Page 406 Functions not always correct, as the measured values can be distorted by e.g. intermediate infeeds. To calculate the distance to fault in kilometres or miles, the device requires the reactance per unit length data in Ω/km or Ω/mile. For correct indication of the fault location in % of line length, the correct line length should also be entered.
Page 407: Settings
Functions 6.15.3 Settings Addr. Setting Title Setting Options Default Setting Comments 3802 START Pickup Pickup Start fault locator with TRIP 3805 Paral.Line Comp Mutual coupling parall.line com- pensation 3806 Load Compensat. Load Compensation 3811 Tmax OUTPUT 0.10..30.00 sec 0.30 sec Maximum output time via BCD 6.15.4 Information Overview F.No.
Page 408 Functions F.No. Alarm Comments 1152 BCD dist. VALID BCD Fault location valid 6-226 7SA6 Manual C53000-G1176-C133-1...
Page 409: Circuit Breaker Failure Protection
Functions 6.16 Circuit Breaker Failure Protection 6.16.1 Method of Operation General The circuit breaker failure protection provides rapid back-up fault clearance, in the event that the circuit breaker fails to respond to a trip command from a feeder protection. Whenever e.g. a short-circuit protection relay of a feeder issues a trip command to the circuit breaker, this is repeated to the breaker failure protection (Figure 6-111).
Page 410 Functions Bus-bar Protection trip Circuit breaker failure protection T–BF & Feeder Feeder protection Trip (internal or external) bus-bar Figure 6-112 Simplified function diagram of circuit breaker failure protection controlled by circuit breaker auxiliary contact Current Flow Each of the phase currents and an additional plausibility current (see below) are Monitoring filtered by numerical filter algorithms so that only the fundamental frequency is used for further evaluation.
Page 411 Functions "(! D3Ã7A Current criterion > 1 & L1> & > 1 & L2> & > 1 & L3> & > 1 plausi- bility Figure 6-113 Current flow monitoring with the plausibility currents 3· I and 3·I Processing of the The position of the circuit breaker is derived from the central function control of the Circuit Breaker device (refer also to Section 6.20.2).
Page 412 Functions L1> & Start only L1 & CB pole L1 closed FNo 351 (refer to Fig. 6-119) >CB Aux. L1 ) if phase dedicated auxiliary contacts available > 1 FNo 380 ) if series connection of NC contacts available >CB 3p Open Figure 6-114 Interlock of the auxiliary contact criterion —...
Page 413 Functions L1> > 1 L2> & L3> Start L123 & CB any pole closed FNr 351 >CB Aux. L1 FNr 352 > 1 >CB Aux. L2 FNr 353 >CB Aux. L3 FNr 379 >CB 3p Closed FNr 380 >CB 3p Open Figure 6-115 Creation process of signal “CB any pole closed”...
Page 414 Functions Phase Segregated Phase segregated initiation of the breaker failure protection is necessary if the circuit Initiation breaker poles can be operated individually, e.g. if single-pole automatic reclosure is used. This is possible if the device is able to trip single-pole. If initiation of the breaker failure protection must also be possible by further external protection devices, it is recommended, for security reasons, to connect an additional release signal (e.g.
Page 415 Functions external 7SA6 prot. device Trip L1 >BF Start L1 Trip L1 Trip L2 >BF Start L2 Trip L2 Trip L3 >BF Start L3 Trip L3 >BF release L– Figure 6-118 Breaker failure protection with phase segregated initiation — example for initiation by an external protection device with release by a separate set of trip contacts Initiation of a single-phase, e.g.
Page 416 Functions "(( 8uxÃ7SFÃ8PIU68U <HV CB pole L1 closed > 1 L1> Start internal L1 > 1 & FNo 1435 Start only L1 & >BF Start L1 <HV CB pole L2 closed > 1 L2> Start internal L2 > 1 & Start only L2 FNo 1436 &...
Page 417 Functions Different delay timers are provided for operation after common phase initiation and phase segregated initiation. A third time stage can be used for two-stage breaker failure protection. With single-stage breaker failure protection, the trip command is routed to the adjacent circuit breakers should the local feeder breaker fail (refer to Figure 6-111 or 6-112).
Page 418 Functions "(# U Q‚yr "(" ƒS@USDQÃU (accordingly for other phases) <HV Start only L1 UÃÃÃÃÃÃ FNo 1472 > 1 & BF T1-TRIP 1pL1 Start only L2 Start only L1 Start only L3 (Trip repetition "($ U "Q‚yr feeder breaker) FNo 1476 >...
Page 419 Functions End Fault An end fault is defined here as a short–circuit which has occurred at the end of a line Protection or protected object, between the circuit breaker and the current transformer set. This situation is shown in Figure 6-124. The fault is located — as seen from the current transformers (= measurement location) —...
Page 420 Functions Circuit Breaker The pole discrepancy supervision has the task to detect discrepancies in the position Pole Discrepancy of the three circuit breaker poles. Under steady-state conditions, either all three poles Supervision of the breaker must be closed, or all three poles must be open. Discrepancy is permitted only for a short time interval during a single-pole automatic reclose cycle.
Page 421 Functions Normally, the breaker failure protection evaluates the current flow criterion as well as the position of the breaker auxiliary contact(s). If the auxiliary contact(s) status is not available in the device, this criterion cannot be processed. In this case, set address &KN %5.
Page 422 Functions Fault inception Fault clearance time normal Prot. CB operating time Reset Safety trip (local) I–BF margin Initiation breaker failure protection Time delay T1 of breaker Trip command Reset Safety failure protection repetition I> BF margin Time delay T2 of breaker CB operating time failure protection (adjacent CBs)
Page 423 Functions Fault inception Fault clearance time normal Prot. CB operating time Reset Safety trip I> BF margin Initiation breaker failure protection Time delay T2 of breaker CB–operating time failure protection (adjacent CBs) Total fault clearance time with breaker failure Figure 6-128 Time sequence example for normal clearance of a fault, and with circuit breaker failure, using single-stage breaker failure protection Circuit Breaker not If the circuit breaker associated with the feeder is not operational (e.g.
Page 424: Settings
Functions The delay time 73ROH'LVFUHS (address ) determines how long a breaker pole discrepancy condition of the feeder circuit breaker, i.e. only one or two poles open, may be present before the pole discrepancy supervision issues a three-pole trip command. This time must clearly be longer than the duration of a single-pole automatic reclose cycle.
Page 425: Information Overview
Functions 6.16.4 Information Overview F.No. Alarm Comments 1401 >BF on >BF: Switch on breaker fail protection 1402 >BF off >BF: Switch off breaker fail protection 1403 >BLOCK BkrFail >BLOCK Breaker failure 1432 >BF release >BF: External release 1439 >BF Start w/o I >BF: External start 3pole (w/o current) 1415 >BF Start 3pole...
Page 426: Thermal Overload Protection
Functions 6.17 Thermal Overload Protection 6.17.1 Method of Operation The thermal overload protection prevents damage to the protected object caused by thermal overloading, particularly in case of transformers, rotating machines, power reactors and cables. It is in general not necessary for overhead lines, since no meaningful overtemperature can be calculated because of the great variations in the environmental conditions (temperature, wind).
Page 427: Applying The Function Parameter Settings
Functions #!" UDH@Ã8PITU6IU #!% 86G8ÃH@UCP9 #!! F²A68UPS #!# Ã6G6SH Θ Θ Θ AI‚Ã $ % Θ Θ> O/L Θ Alarm & Θ ( I AI‚Ã $! Θ≥1 #!$ DÃ6G6SH & Th.O/L TRIP I> ≥1 AI‚Ã $ $ & O/L I Alarm AI‚Ã...
Page 428 Functions Example: Belted cable 10 kV 150 mm Permissible continuous current I = 322 A Current transformer 400 A/5 A 322 A --------------- - 0.805 400 A Setting value .)$&725 = Time Constant τ The thermal time constant τ is set under the address 7,0( &2167$17.
Page 429: Settings
Functions Since an overload usually occurs in a balanced way, this setting is of minor importance. If unbalanced overloads are to be expected, however, these options lead to different results. Averaging should only be used if a rapid thermal equilibrium is possible in the protected object, e.g.
Page 430: Analog Outputs
Functions 6.18 Analog Outputs 6.18.1 Method of Operation Depending on the ordering version the 7SA6 relay up to four analog outputs are available. During the configuration of the functional scope (see Figure 5.1) it was determined which values may be transmitted via these interfaces. Up to four outputs can be selected out of the following list: •...
Page 431 Functions for analog output 1 at mounting location “D” (Port D1): Address P$ ' value in % to be indicated at 20 mA Address 0,1 9$/8( ' the minimum value permitted for analog output 2 at mounting location “D” (Port D2): Address P$ ' value in % to be indicated at 20 mA Address 0,1 9$/8( ' the minimum value permitted...
Page 432 Functions The values for the negative fault location and the overflow must be set as large as possible since the linear transmission range of the fault location values ends 0.5 mA below the smallest of these values. Set in Addresses 7PD[ 287387%, 7PD[ 287387%, 7PD[ 287387' or 7PD[ 287387' for how long the valid fault location is to be delayed.
Page 433: Settings
Functions Settings: Address P$ ' A, Address 7PD[ 287387' = s. 6.18.3 Settings Addr. Setting Title Setting Options Default Setting Comments 5001 20 mA (B1) = 10.0..1000.0 % 200.0 % 20 mA (B1) correspond to 5002 20 mA (B1) = 10..100000 A...
Page 434 Functions Addr. Setting Title Setting Options Default Setting Comments 5037 NEG VALUE (D2) 19.00..22.50 mA 19.84 mA Output value (D2) for negative values 5038 OVERFLOW (D2) 19.00..22.50 mA 22.50 mA Output value (D2) for overflow Tmax OUTPUT(D2) 0.10..30.00 sec; ∞ 5039 5.00 sec Maximum output time (D2)
Page 435: Monitoring Functions
Functions 6.19 Monitoring Functions The device incorporates extensive monitoring functions of both the device hardware and software; the measured values are also continually checked to ensure their plausibility; the current and voltage transformer secondary circuits are thereby substantially covered by the monitoring function. Furthermore it is possible to implement a trip circuit supervision function by means of the available binary inputs.
Page 436 Functions Measured Value Four measuring inputs are available in the current circuits. If the three phase currents Acquisition — and the earth current from the current transformer star-point or from a separate earth Currents current transformer on the protected circuit are connected to the device, the sum of the four digitized currents must equal 0.
Page 437: Software-Monitoring
Functions 6.19.1.2 Software–Monitoring Watchdog For the continuous monitoring of the program execution, a time monitoring is incorporated in the hardware (hardware watchdog). The watchdog expires and resets the processor system causing a complete reboot if the processor fails or when a program loses synchronism.
Page 438 Functions Broken Conductor A broken conductor of the protected line or in the current transformer secondary circuit can be detected, if the minimum current %$/$1&( , /,0,7 flows via the feeder. If a current symmetry failure is detected and the minimum current is below the threshold 3ROH2SHQ&XUUHQW (address 1130, refer to subsection 6.1.3), an interruption of this conductor may be assumed.
Page 439 Functions Fuse Failure In the event of measured voltage failure due to a short circuit or broken conductor in Monitor the voltage transformer secondary circuit certain measuring loops may mistakenly see (Non-Symmetrical a voltage of zero, which due to the load current may result in an unwanted pick-up or Voltages) even trip.
Page 440 Functions FFM I< (max) 2912 ≥ 1 Star Point Earthed & Earthed & Fast & 0170 VT FuseFail FFM U>(min) ≥ 1 & ≥ 1 0169 VT FuseFail > 10s Slow ≥ 1 ≥ 1 & FFM Pickup Delaid ≥...
Page 441: Trip Circuit Supervision
Functions during the voltage failure if the overcurrent protection was configured accordingly (refer to Section 6.9). 6.19.1.4 Trip Circuit Supervision The distance protection 7SA6 incorporates an integrated trip circuit supervision function. Depending on the number of binary inputs with isolated control inputs that are still available, a choice can be made between monitoring with one or with two binary inputs.
Page 442 The state where both binary inputs are not energized (“L”) is only present during a short transition phase (trip relay contact is closed, but the circuit breaker has not yet opened) if the trip circuit is healthy. A continuous occurrence of this state is only possible during interruption or short circuit of the trip circuit as well as during failure of the battery supply voltage, or faults in the mechanism of the circuit breaker.
Page 443: Response To Failures
Functions 7SA6 >Trip C1 TripRel 7SA6 Legend: — trip relay contact — circuit breaker — circuit breaker trip coil Aux1 — circuit breaker auxiliary contact (normally open) Aux2 — circuit breaker auxiliary contact Aux1 Aux2 (normally closed) — substitute resistor —...
Page 444 Functions • (UURU ZLWK D VXPPDU\ DODUP (F.No. 140, i.e. general device failure) • $ODUP VXPPDU\ HYHQW (F.No. 160, i.e. general supervision alarm) • )DLOXUH JHQHUDO FXUUHQW VXSHUYLVLRQ (F.No. 161) • )DLOXUH JHQHUDO YROWDJH VXSHUYLVLRQ (F.No. 164) Table 6-12 Summary of the device response to detected failures Monitoring Possible causes Alarm (function no.)
Page 445: Applying The Function Parameter Settings
Functions Table 6-12 Summary of the device response to detected failures Monitoring Possible causes Alarm (function no.) Failure response Output General alarms “)DLO Σ8 3K(” (165) general alarms: 164, 160 as allocated Voltage sum internal (measured value acquisition) “)DLO 8 EDODQFH” Voltage symmetry external (primary plant or general alarms: 164, 160 as allocated...
Page 446 Functions Note: The current summation monitoring is only in service if the earth current of the protect- ed feeder is connected to the fourth current measuring input (I ) for earth currents. Fuse Failure The settings of the fuse failure monitor for non-symmetrical measured voltage failure Monitor (single- or two-phase) must be selected such that on the one hand reliable pick-up of the monitoring is ensured in the case of loss of a single-phase voltage (address ...
Page 447: Settings
Functions 6.19.3 Settings Note: The indicated secondary current values for setting ranges and default settings Measurement Supervision refer to I = 1 A. For the nominal current 5 A the current values are to be multiplied by 5. The values of impedance are divided by 5. Addr.
Page 448: Information Overview
Functions 6.19.4 Information Overview Hardware and Software Supervision FNo. Alarm Comments Clock SyncError Clock Synchronization Error DayLightSavTime Daylight Saving Time Event Lost Event lost Flag Lost Flag Lost Chatter ON Chatter ON Error Sum Alarm Error with a summary alarm Error 5V Error 5V Alarm Sum Event...
Page 449 Functions F.No. Alarm Comments Fail U balance Failure: Voltage Balance VT FuseFail>10s VT Fuse Failure (alarm >10s) VT FuseFail VT Fuse Failure (alarm instantaneous) Fail Ph. Seq. Failure: Phase Sequence Fail Conductor Failure: Broken Conductor Fuse Fail M.OFF Fuse Fail Monitor is switched OFF MeasSup OFF Measurement Supervision is switched OFF Trip Command...
Page 450: Function Control
Functions 6.20 Function Control The function control is the control centre of the device. It coordinates the execution of the protection and supplementary functions, processes their decisions and the information that emanates from the plant. In particular the following • switch-in recognition, •...
Page 451: Processing Of The Circuit Breaker Position
Functions 7SA6 control switch FNo 356 >Manual Close FNo 2851 AR CLOSE Cmd. Close 8‚vy Legend: — circuit breaker Close — circuit breaker close pulse L– Figure 6-139 Manual closure with internal automatic reclosure 7SA6 control external switch automatic reclosure FNo 356 >Manual Close close...
Page 452 Functions In most cases it is sufficient to furnish the status of the circuit breaker with its auxiliary contacts via a binary input to the device. This always applies if the circuit breaker is only switched three-pole. Then the NO auxiliary contact of the circuit breaker is connected to a binary input which must be configured to the input function “!&% S &ORVHG”...
Page 453 Functions CB aux. contact: FNr 380 R 380 >CB 3p Open (Connection in Series NC Contacts) ≥1 R 380 & any pole closed. FNr 351 R 351 >CB Aux. L1 ≥1 & L1 closed. ≥1 R 351 & L1 open FNr 352 R 352 >CB Aux.
Page 454: Overall Fault Detection Logic Of The Device
Functions 6.20.3 Overall Fault Detection Logic of the Device Phase Segregated The fault detection logic combines the fault detection (pick-up) signals of all protection Fault Detection functions. In the case of those protection functions that allow for phase segregated pick-up, the pick-up is output per phase. If a protection function detects an earth fault, this is also output as a common device alarm.
Page 455 Functions • “GLVW ”: the distance to fault in kilometres or miles derived by the distance to fault location function. 6-273 7SA6 Manual C53000-G1176-C133-1...
Page 456: Overall Tripping Logic Of The Device
Functions 6.20.4 Overall Tripping Logic of the Device Three-Pole In general, the device trips three-pole in the event of a fault. Depending on the version Tripping ordered, (13th position of the ordering code = “4” to “7”) single-pole tripping is also possible (see below).
Page 457 Functions interrupted in this manner. The phase selected for tripping must be the same at both line ends (and should be the same for the entire system). By means of the setting parameter 7ULSSK)OW it is possible to select whether this tripping is SROH OHDGLQJ 3K, i.e.
Page 458 Functions tripping protection function resets very rapidly. Only after the last protection function has reset (no function is picked up any more) AND the minimum trip command duration has expired, the trip commands can reset. A further condition for the reset of the trip command is that the circuit breaker has opened, in the event of single-pole tripping the relevant circuit-breaker pole.
Page 459 Functions Only once the cause for the protection operation is known, should the lock-out be reset by a manual reset via binary input “!/RFNRXW 5(6(7” (FNo ). "'$ $" >LOCKOUT Set LOCKOUT "'% >LOCKOUT Reset Figure 6-143 Trip circuit seal-in (reclosure lock-out) The conditions which cause reclosure lock-out and the control commands which have to be locked can be set individually.
Page 460 Functions Prior to the command, with the internal automatic reclosure in the ready state, the contact in open so that no signal from the circuit-breaker is forwarded. This is only the case if the device is equipped with internal automatic reclosure and if this was taken into consideration when configuring the protection functions (Section 5.1, address ).
Page 461 Functions Manual trip (as required) Manual Close via binary input “>Manual Close” Fault inception Protection pick-up Protection trip Auto-reclosure AR dead time (AR) CB Pole CB Operation Detector „&% $ODUP 6XSS“ Alarm: “Breaker Tripping” Manual opening Final trip of protection function Figure 6-145 Breaker tripping alarm suppression —...
Page 462: Circuit Breaker Trip Test
Functions Following each trip command the device registers the value of each phase current that was switched off in each pole. This information is then provided in the trip log and accumulated in a register. The maximum current that was switched off is also stored. If the device is equipped with the integrated automatic reclosure, the automatic close commands are also counted, separately for reclosure after single-pole tripping, after three-pole tripping as well as separately for the first reclosure cycle and other...
Page 463: Applying The Function Parameter Settings
Functions TRIP CLOSE UHvÃUSDQÃ8€q U87‡r†‡qrhq UHh‘Ã8GPT@Ã8H9 !# !#! Figure 6-147 Trip/Close test cycle 6.20.6 Applying the Function Parameter Settings The configuration concerning the tripping logic of the device as a whole and circuit- breaker test function was already set in accordance with the general data in Subsection 6.1.3 and 6.1.1.
Page 464: Information Overview
Functions 6.20.8 Information Overview Circuit-breaker test F.No. Alarm Comments 7325 CB1-TESTtrip L1 CB1-TEST TRIP command - Only L1 7326 CB1-TESTtrip L2 CB1-TEST TRIP command - Only L2 7327 CB1-TESTtrip L3 CB1-TEST TRIP command - Only L3 7328 CB1-TESTtrip123 CB1-TEST TRIP command L123 7329 CB1-TEST close CB1-TEST CLOSE command...
Page 465: Supplementary Functions
Functions 6.21 Supplementary Functions The auxiliary functions of the 7SA6 relay include: • processing of messages, • processing of operational measured values, • storage of fault record data. 6.21.1 Processing of Messages For the detailed fault analysis, the information regarding the reaction of the protection device and the measured values following a system fault are of interest.
Page 466: Operational Measurement
Functions The device in addition has several event buffers for operational messages, switching statistics, etc., which are saved against loss of auxiliary supply by means of a battery buffer. These messages can be displayed on the LCD at any time by selection via the keypad or transferred to a personal computer via the serial service or PC interface.
Page 467 Functions If the device is provided with the synchronism and voltage check, the characteristic values (voltages, frequencies, differences) can be read out. If the device is provided with the earth fault detection function for non-earthed systems, the components of the earth current (active and reactive component) are indicated, as well.
Page 468 Functions Table 6-15 Operational measured values Measured values primary secondary % in relation to ϕ magnitude of the phase angle difference ° — — diff between line and busbar (for sychronism check) active and reactive component of earth — fault current ) acc.
Page 469: Data Storage For Fault Recording
Functions 6.21.3 Data Storage for Fault Recording The distance protection 7SA6 has a fault recording memory. The instantaneous values of the measured signals or i , and u (voltages according to type of connection) are sampled at an interval of 1 ms (at 50 Hz) respectively 0.83 ms (at 60 Hz), and stored in a circular shift register (20 samples per cycle).
Page 470 Functions measured values that arrive within 15 minutes, and that output is updated three times during the 15 minute window, or every 15/3 = 5 minutes. Determine in address '0' 6\QF7LPH whether the selected time period for the averaging is to begin on the hour (2Q 7KH +RXU) or if it is to be synchronized with a different point in time ( $IWHU +RXU, $IWHU +RXU or $IWHU +RXU).
Page 471: Settings
Functions 6.21.5 Settings Average Calculation Addr. Setting Title Setting Options Default Setting Comments 2801 DMD Interval 15 Min per., 1 Sub 60 Min per., 1 Sub. Demand Calculation Intervals 15 Min per., 3 Subs 15 Min per., 15 Subs 30 Min per., 1 Sub. 60 Min per., 1 Sub.
Page 472: Information Overview
Functions 6.21.6 Information Overview Average Calculation F.No. Alarm Comments IL1dmd= I L1 demand IL2dmd= I L2 demand IL3dmd= I L3 demand I1dmd = I1 (positive sequence) Demand Pdmd = Active Power Demand 1052 Pdmd Forw= Active Power Demand Forward 1053 Pdmd Rev = Active Power Demand Reverse Qdmd =...
Page 473 Functions F.No. Alarm Comments IL3d Min I L3 Demand Minimum IL3d Max I L3 Demand Maximum I1dmdMin I1 (positive sequence) Demand Minimum I1dmdMax I1 (positive sequence) Demand Maximum PdMin= Active Power Demand Minimum PdMax= Active Power Demand Maximum QdMin= Reactive Power Demand Minimum QdMax= Reactive Power Demand Maximum SdMin=...
Page 474 Functions F.No. Alarm Comments IL3d Min I L3 Demand Minimum IL3d Max I L3 Demand Maximum I1dmdMin I1 (positive sequence) Demand Minimum I1dmdMax I1 (positive sequence) Demand Maximum PdMin= Active Power Demand Minimum PdMax= Active Power Demand Maximum QdMin= Reactive Power Demand Minimum QdMax= Reactive Power Demand Maximum SdMin=...
Page 475 Functions F.No. Alarm Comments 1042 Pmin Rev = Active Power Minimum Reverse 1043 Pmax Rev = Active Power Maximum Reverse 1044 Qmin Forw= Reactive Power Minimum Forward 1045 Qmax Forw= Reactive Power Maximum Forward 1046 Qmin Rev = Reactive Power Minimum Reverse 1047 Qmax Rev = Reactive Power Maximum Reverse...
Page 476 Functions Waveform Capture F.No. Alarm Comments >Trig.Wave.Cap. >Trigger Waveform Capture Wave. deleted Waveform data deleted FltRecSta Fault Recording Start 6-294 7SA6 Manual C53000-G1176-C133-1...
Page 477: Processing Of Commands
Functions 6.22 Processing of Commands General In addition to the protective functions described so far, a control command process is ® integrated in the SIPROTEC 7SA6 to coordinate the operation of circuit breakers and other equipment in the power system. Control commands can originate from four command sources: −...
Page 478: Steps In The Command Sequence
Functions − Status information commands for setting / deactivating the “information status” for the information value of an object: − Controlling activation of binary input status − Blocking binary outputs 6.22.2 Steps in the Command Sequence Safety mechanisms in the command sequence ensure that a command can only be released after a thorough check of preset criteria has been successfully concluded.
Page 479: Interlocking
Functions − Interruption of a command because of a cancel command Monitoring the Command − Running time monitor (feedback message monitoring time) Execution 6.22.3 Interlocking Interlocking is executed by the user-defined logic (CFC). The interlocking checks of a ® SICAM/SIPROTEC -system are classified into: •...
Page 480 Functions negative confirmation, the command was rejected. Figure 6-148 shows the messages relating to command execution and operation response information for a successful operation of the circuit breaker. The check of interlocking can be programmed separately for all switching devices and tags that were set with a tagging command.
Page 481 Functions Switching Authority Switching Mode Device with Source of Command = On/Off LOCAL Local & SAS REMOTE Local & DIGSI AUTO & & Remote Switching Authority (Local/Remote) DIGSI & DIGSI Switching Authority DIGSI Remote & Switching Mode Non-Interlocked Local SCHEDULED=ACT .y/n &...
Page 482: Recording And Acknowledgement Of Commands
Functions Figure 6-150 shows all interlocking conditions (which usually appear in the display of the device) for three switchgear items with the relevant abbreviations explained in table 6-17. All parametrized interlocking conditions are indicated (see Figure 6-150). ,QWHUORFNLQJ 4 &ORVH2SHQ 6 ²...
Page 483 Functions The “plus” appearing in a feedback information confirms that the command was successful, the command was as expected, in other words positive. The “minus” is a negative confirmation and means that the command was not fulfilled as expected. Command Output The command types needed for tripping and closing of the switchgear or for raising and Switching and lowering of transformer taps are described in Section 5.2 and Subsection 5.2.1.
Page 484 Functions 6-302 7SA6 Manual C53000-G1176-C133-1...
Page 485: Control During Operation
Control During Operation ® This chapter describes interaction possibilities with the SIPROTEC 7SA6 device during operation. The information that can be obtained and the procedure for retrieving the data are discussed. Methods of influencing the device functions during operation and controlling the system using the device are covered. Detailed knowledge about the device functions is not required at this point.
Page 486: Read-Out Of Information
Control During Operation Read-out of Information General The device provides a great deal of information that can be obtained on-site or from data transfer: • Messages, • Operating measurement and metered values, • Waveform data in oscillographic fault records. This information is individually discussed below. Methods for viewing, retrieving, acknowledging, and storing this information on a PC are also explained.
Page 487 Control During Operation Binary Outputs Indications can be configured to output relays for external indication (e.g. annunciator, sequence-of-events recorder, RTU, etc), and operate like LEDs. See also Chapter 5 for details. Front Panel To retrieve messages using the front panel: First press the 0(18 key .
Page 488 Control During Operation ® Figure 7-2 Function selection screen in DIGSI 4 - example System (SCADA) The system interface (if available) is generally hardwired and transfers all device Interface information to a master station via data cable or optical fibre cable. Division of The messages are categorized as follows: Messages...
Page 489: Event Log (Operating Messages)
Control During Operation 7.1.1.2 Event Log (Operating Messages) Operating messages contain information that the device generates during operation and about the operation. Up to 200 operating messages are stored in chronological order in the device. New messages are added at the end of the list. If the memory has been exceeded, then the oldest message is overwritten for each new message.
Page 490: Trip Log (Fault Messages)
Control During Operation ® Figure 7-4 Selection of operational messages in DIGSI ® Figure 7-5 Example of operational messages in DIGSI 7.1.1.3 Trip Log (Fault Messages) Spontaneous The spontaneous messages appear automatically in the display, after a general pick- Messages up of the device.
Page 491 Control During Operation The spontaneous messages can be acknowledged by pressing the key. After acknowledgment, the default display is shown. Options for Especially for the fault location there are, except for the display options in the device ® Fault Location display and in DIGSI 4, further display options.
Page 492 Control During Operation If no messages are present for a fault, then entrance is denied and “/LVW (PSW\” is displayed. The messages within a fault record are listed in chronological order and numbered, from the oldest to the newest. The inception of a fault is identified with the date and time in hours, minutes, and seconds (resolution to ms).
Page 493: Earth Fault Messages
Control During Operation ® Figure 7-9 Example of fault messages in DIGSI 7.1.1.4 Earth Fault Messages Devices with sensitive earth fault detection provide special earth fault logs. The earth faults are registered if the earth fault detection function is set to “OFF” (Address = $ODUP 2QO\) and an earth fault was already in queue so that the trip delay (7 6HQV()) could expire.
Page 494 Control During Operation @6SUCÃA6VGUÃH@TT6B@ " !/DVW )DXOW ²! /$67 )$8/7 !QG /DVW )DXOW ²! ! (DUWK )DXOW Figure 7-10 Example of earth fault messages in the front display Use the keys to move up and down in the fault messages. key to move back into the ($57+ )$8/7 0(66$*(6 level;...
Page 495: Saving And Erasing The Messages
Control During Operation 7.1.1.5 Saving and Erasing the Messages Normally, erasing the messages is not necessary because the oldest messages are automatically erased when new events are entered, if the memory is full at the time. However, erasure of the stored messages may be useful, for instance, after revision of the plant, so that in the future the memory only contains information about actual events.
Page 496: General Interrogation
Control During Operation as if reading out the messages. However, instead of opening the information list by making a double-click on the event group, select the option )LOH → 6DYH in the ® menu of the DIGSI window. Then DIGSI 4 automatically creates a directory for the ®...
Page 497: Switching Statistics
Control During Operation 7.1.2 Switching Statistics The messages in switching statistics are counters for the accumulation of interrupted currents by each of the breaker poles, the number of trips issued by the device to the breaker. The interrupted currents are in primary terms. Switching statistics can be viewed on the LCD of the device, or on a PC running ®...
Page 498: Resetting And Setting The Switching Statistics
Control During Operation ® Figure 7-16 List of statistic values in DIGSI 4 — example 7.1.2.2 Resetting and Setting the Switching Statistics The memories and counters for switching statistics are secured against a loss of power supply voltage. The values can, however, be set to zero, or to any desired value within certain setting limits.
Page 499: Measured Values
Control During Operation ® Figure 7-18 Setting statistic values in DIGSI 4 — example 7.1.3 Measured Values Operating measured values are determined in the background by the processor system. They can be called up at the front of the device, read out via the operating ®...
Page 500 Control During Operation If the device is provided with earth fault detection in a non-earthed system, also the components of the earth fault current (active and reactive components) are indicated. In addition to those measured values listed in the table, it is possible to retrieve user defined measurement, metering and set points, if these were generated during the configuration of the device according to Section 5.2 and/or 5.3 “Generating user definable functions with CFC”.
Page 501 Control During Operation If the device is provided with analog outputs allocated to certain measured values during the configuration according to Section 5.1, they can be read out in the display (e.g. analog instrument). Except for the current measured values the user can also read out the minimum, maximum and long-term measured values.
Page 502 Control During Operation The measured values are divided into the following groups: 01 2SHUDWLRQ SUL Operational measured values, primary. 02 ,((SULPDU\ Measured values of earth fault, primary; 03 ,PSHGDQFH 3ULP Operational impedance, primary; 04 6\QFKU&KHFNSUL Measured values of synchronism check, primary; 11 2SHUDWLRQ VHF Operational measured values, secondary;...
Page 503 Control During Operation key to return to the 0($685(0(17 sub-menu. Use the Use the key to return to MENU the 0$,1 0(18. The measured value groups are found under 0HDVXUHPHQW (Figure 7-2) with a From PC with ® DIGSI double click, as shown in Figure 7-21, left. ®...
Page 504: Energy
Control During Operation appears (3 horizontal bars). If the measured value overruns, then “ ” (3 asterisks) are viewed. Double click on the desired measured value group, e.g. 3ULPDU\. The next sub-group is displayed. Double click on the desired sub-group, e.g. 2SHUDWLRQDO YDOXHV SULPDU\. By double clicking on an entry in the list in the right part of the window, detailed information on the measured value group is displayed in another window, as shown in Figure 7-22.
Page 505: Setting Set Points
Control During Operation Make a double click on 0($685(0(17 (Figure 7-2) to view the measurement groups. From PC with ® DIGSI Select 2WKHr with another double click. In the next level double-click on (QHUJ\. By double-clicking on an item in the list in the right part of the window, another window is opened viewing the corresponding content of the counter group.
Page 506 Control During Operation 0HDVXUHPHQW !6HW 3RLQWV09 6(7 32,176 09 5HVHW ,/ /LPLW $ ,/ /LPLW $ etc. Enter password Nr. 5 (for individual 3: 6HWWLQJV" ENTER parameters) and confirm with ENTER ,/ /LPLW ENTER $UH \RX VXUH"...
Page 507 Control During Operation ® Figure 7-24 Set Points in DIGSI 7-23 7SA6 Manual C53000-G1176-C133-1...
Page 508: Resetting Of Metered Values And Minimum/Maximum Values
Control During Operation 7.1.3.4 Resetting of Metered Values and Minimum/Maximum Values Metered values of measured values and minimum/maximum value memories can be reset. key. The 0$,1 0(18 appears. From the With the device ready for operation, first press the MENU Device Front key to select the menu item 0HDVXUHPHQW and switch to the list of Use the...
Page 509 Control During Operation From PC with Resetting of metered values and minimum/maximum values is done for all categories ® DIGSI at the same time. To reset values back to zero, first click onto the required group (energy or minimum/ maximum values) in the 0($685(0(17 submenu. Open the context menu with a right mouse click and select 5HVHW After having entered the password N°...
Page 510: Fault Records
Control During Operation 7.1.4 Fault Records Waveform data is stored in the device and can be graphically represented on a ® ® personal computer using DIGSI 4, together with the graphic program DIGRA 4. The settings associated with fault recording — such as duration and pre- and post-trigger times —...
Page 511 Control During Operation Selection takes place using the menu bar (9LHZ), or clicking in the symbol bar above the represented switching fields. Figure 7-27 shows all four views simultaneously. Figure 7-27 SIGRA 4 — Diagrams in the four possible views The recorded data read into the PC memory are first shown in full on the screen.
Page 512: Saving The Fault Records
Control During Operation Figure 7-28 Example of a fault record viewing the time signal view There are 2 cursors in the time axis, cursor 1 and cursor 2. Moving one cursor on the time axis it is possible to read out (in all views) the corresponding points of time from the table below the function bar.
Page 513 Control During Operation The event group is then stored in this directory. The following question “6KRXOG WKH SURFHVV GDWD DOVR EH VDYHG"” is to be answered according to the user‘s ® requirements. For more details, see the DIGSI 4 Operating Handbook, Order No. E50417-H1176-C097, Section 9.4.
Page 514: Control Of Device Functions
Control During Operation Control of Device Functions You may change individual functions and messages in a 7SA6 while the device is in- service. Some examples are given above, including deleting stored information (Sub- section 7.1.1.5) and setting/resetting counters and set-points (Sub-sections 7.1.2.2 and 7.1.3.3).
Page 515 Control During Operation The text symbols, or “status bits”, for the time status have the following meanings: Not synchronized Time was neither set manually nor synchronized after power-up. The synchronization via the system interface defines the transmitted time value as “invalid”, the cyclical synchronization continues however.
Page 516 Control During Operation Item 4 displays the normal condition; that is, the time is synchronized cyclically according to the type of operation. Item 5 is displayed if the transmitted time value from the synchronization via the system interface is marked as “invalid”. Changing the Time The time can be changed −...
Page 517 Control During Operation Confirm the change with the key. ENTER To change the time offset or the tolerance time for a clock error signal, select &ORFN 6HWXS under 6(783(;75$6, as shown in Figure 7-30. Under 2IIVHW, the time off- set can be changed. Under (UURU 7LPH, the time delay for the alarm and the source of the time synchronization can be changed.
Page 518 Control During Operation Click on 2. to transfer the entered values into the device. The previous values are changed and the dialog field is closed. 6HW FORFN GDWH LQ GHYLFH Figure 7-32 Dialog Field: If the time offset or tolerance time is to be changed when the clock alarm failed, double-click onto 6HWWLQJV (Figure 7-33) to select the function.
Page 519 Control During Operation Make a double click onto 7LPH 6\QFKURQL]DWLRQ and the window 7LPH 6\QFKURQL]DWLRQ 7LPH )RUPDW appears. There the user can change the alarm delay („Fault indication after“) and the time offset in the field “Offset to time signal”. 7LPH 6\QFKURQL]DWLRQ 7LPH )RUPDW Figure 7-34...
Page 520: Changeover Of Setting Groups
Control During Operation 7.2.2 Changeover of Setting Groups Four different setting groups for the protective functions are available. The active group can be changed onsite while the 7SA6 is in-service by using the integrated ® operating field on the device or the operating interface on a PC running DIGSI Alternatively, you may decide that the active setting group be remotely controlled via binary inputs or the System (SCADA) interface.
Page 521 Control During Operation &+$1*( *5283 The currently-active setting group is $&7,9( *5283 displayed under Address . *URXS $ The setting group can be changed under &+$1*( WR Address : by pressing the !*URXS $ ENTER key, after entering the password, two possible alternatives are displayed in a new window !*URXS $...
Page 522: Test Messages To The System (Scada) Interface During Test Operation
Control During Operation Double click on &KDQJH *URXS. The &KDQJH *URXS window is opened, as shown in Figure 7-37. ® Figure 7-37 Setting group switching in DIGSI The active setting group is displayed. To switch to another setting group, click on the field 9DOXH and select the desired option from the drop-down list.
Page 523 Control During Operation key. The 0$,1 0(18 appears. From the With a device ready for operation, first press the MENU Device Front key, highlight the menu item 7HVW'LDJQRVH, and then press the Using the key to enter sub-menu. 7(67',$*126( will appear at the top of the menu. At this point, highlight the menu item 7HVW (QDEOH using the key, and then press key to enter sub-menu.
Page 524 Control During Operation ® Figure 7-40 Example: Transfer Block Activated in DIGSI Click on %ORFN 'DWD 7UDQVPLVVLRQ to activate or deactivate the transfer block. After entry of Password No. 4 for test and diagnostics, and confirmation with 2., the setting change is complete. Activation is indicated with a check mark in front of the command.
Page 525: Circuit Breaker Test Function
Control During Operation Circuit Breaker Test Function The circuit breaker and the trip circuits can be tested during normal operation by execution of a TRIP and CLOSE command via the device. A prerequisite for this test is that the required test commands were allocated to the corresponding command relays during the configuration of the device.
Page 526 Control During Operation &%7(67 UXQQLQJ Circuit breaker test in progress &%767VWRS )/7 Circuit breaker test cannot be started as a system fault is present &%767VWRS 23(1 Circuit breaker test cannot be started as the circuit breaker is not closed &%767VWRS 127U Circuit breaker test cannot be started as the circuit breaker is not ready &%767VWRS &/26...
Page 527 Control During Operation even if the operator confirms the opposite. Only if no auxiliary contacts are marshalled, will the device rely on the confirmation by the operator. If the test cycle should be cancelled, press the key in response to the above query, so that the answer “1R”...
Page 528 Control During Operation ® If the 2QOLQH directory in DIGSI From PC with 4 is opened with a double click, the operation ® DIGSI functions of the device appear in the left hand side of the window. By clicking on 7HVW, a list of the available functions appears on the right hand side of the display (Figure 7-43).
Page 529: Control Of Switchgear
Control During Operation Control of Switchgear ® A SIPROTEC 4 device 7SA6 contains control functions that allow for opening and closing of power system switching devices (i.e. circuit breakers). Local control is possible utilizing different elements of the 7SA6. Breaker control from a remote ®...
Page 530: Display Equipment Position And Control
Control During Operation 7.4.1 Display Equipment Position and Control From the Devices with graphic display: Device Front Devices with graphic display enable the user to read out the current switchgear positions in the default and control display. With the latter switchgears can also be controlled.
Page 531 Control During Operation key, the item %UHDNHU6ZLWFK, and continue with the Select, by means of the key. The selection %5($.(56:,7&+ appears. See Figure item by pressing the 7-45. Select 'LVSOD\ (default) and press the key. The selection ',63/$< appears, in which the positions of all planned switching devices can be read out.
Page 532 Control During Operation key. A safety inquiry appears, “$UH \RX To perform control, confirm with the ENTER VXUH"”. If the response is “<(6”, the switching operation is initiated (provided the Local command is allowed). A message is displayed and recorded indicating the results of the control action.
Page 533 Control During Operation ® Figure 7-49 Dialog Box for Performing Control in DIGSI 4 (example) A description of the switching device is displayed in the left column of the dialog field. This represents the contents of the /RQJ 7H[W column within the configuration matrix.
Page 534: Manual Overwriting
Control During Operation 7.4.2 Manual Overwriting When using the Control with Feedback feature, the device checks the feedback indications (i.e. 52-a and 52-b) before and after a control command is issued. If for some reason, the physical connection from a circuit breaker auxiliary contact to the binary inputs of the device is broken, inadvertently shorted, or disconnected, commands may be blocked.
Page 535: Set Status
Control During Operation A safety inquiry appears: “$UH \RX VXUH"” Provided manual overwriting is allowed, a response of “<(6” results in an appropriate message on the display. Acknowledge the message by pressing the ENTER key again. Manual overwriting is cancelled if the process is restricted because, for example, “LQSXW LJQRUHG”...
Page 536: Interlocking
Control During Operation Enter the %5($.(56:,7&+ menu by pressing the key. Select the item 6HW 6WDWXV with the key and switch to the next option using the key. 6(7 67$786 appears, as shown in Figure 7-52. %5($.(56:,7&+ 'LVSOD\ ³! &RQWURO ²! ...
Page 537 Control During Operation The Interlock display has an object table similar to the one described for Set Status. The table provides the set interlocking conditions, which prevent, or could prevent, a local control operation. Letters identify the interlocking conditions. The meanings of the letters are: •...
Page 538: Tagging
Control During Operation 7.4.5 Tagging To identify unusual operating conditions in the power system, tagging can be done. The tagging can, for example, be entered as additional operating conditions in interlocking checks, which are set up with CFC. Tagging is configured in the same way as for operating devices.
Page 539: Switching Authority
Control During Operation 7.4.6 Switching Authority Switching authority determines the command sources that are permitted for control. From the In devices with graphic display the switching authority is determined by the upper key- Device Front operated switch. If the key-operated switch is in horizontal position ( local ), the local control is admitted via the device panel.
Page 540: Switching Mode
Control During Operation 7.4.7 Switching Mode The switching mode can be changed during operation; so, for example, non- interlocked switching can be enabled during the commissioning of the installed equipment. DANGER! Only highly qualified personnel who have an exact knowledge of the power system conditions shall perform non-interlocked switching.
Page 541: Control Messages
Control During Operation ® When the 2QOLQH window in DIGSI From PC with 4 is opened with a double click, the operating ® DIGSI functions for the device appear in the left part of the window (Figure 7-36). Clicking on &RQWUROV brings up the function selection in the right side of the window (Figure 7- 48).
Page 542: Other Commands
Control During Operation Table 7-5 Possible Control Messages Message Text Message Cause &RQILJ (UURU Refusal because no relay is assigned to this object, or the relay jumpered in the device does not exist &RQWURO %ORFNHG Refusal because an output block is set 6\VWHP 2YHUORDG"...
Page 543 Control During Operation release processing of functions in the CFC. This command processing is determined during project planning and configuration of the matrix. 7-59 7SA6 Manual C53000-G1176-C133-1...
Page 544 Control During Operation 7-60 7SA6 Manual C53000-G1176-C133-1...
Page 545: Installation And Commissioning
Installation and Commissioning This section is primarily for personnel who are experienced in installing, testing, and commissioning protective and control systems, and are familiar with applicable safety rules, safety regulations, and the operation of the power system. Installation of the 7SA6 is described in this section. Hardware modifications that might be needed in certain cases are explained.
Page 546: Mounting And Connections
Installation and Commissioning Mounting and Connections Warning! The successful and safe operation of the device is dependent on proper handling, installation, and application by qualified personnel under observance of all warnings and hints contained in this manual. In particular the general erection and safety regulations (e.g. IEC, DIN, VDE, EN or other national and international standards) regarding the correct use of hoisting gear must be observed.
Page 547 Installation and Commissioning Elongated SIPROTEC Holes SIEMENS ERROR 7SA610 H6DIÃH@IVÃÃÃÃÃÃÃÃÃÃÃÃ $ 6ˆpvh‡v‚ Hrh†ˆ…r€r‡Ã MENU ENTER Annunciation Meas. Val. Trip log Figure 8-1 Panel mounting of a 7SA610 with a four-line display (housing width as an example Elongated Holes SIPROTEC SIEMENS...
Page 548 Installation and Commissioning Elongated Holes SIPROTEC SIEMENS ERROR 7SA612 H6DIÃH@IV 01/04 Annunciation Measurement MENU ENTER Annunciation Meas. Val Trip log Figure 8-3 Panel mounting of a 7SA612 with a four-line display (housing width ) as an example Rack Mounting and...
Page 549 Installation and Commissioning Mounting bracket SIPROTEC SIEMENS ERROR 7SA610 H6DIÃH@IVÃÃÃÃÃÃÃÃÃÃÃÃ # 6ˆpvh‡v‚Ã Hrh†ˆ…r€r‡ MENU ENTER Annunciation Meas. Val. Trip log Mounting bracket Figure 8-4 Installing a 7SA610 with a four-line display in a rack or cubicle (housing width of 19 inch rack) as an example...
Page 550 Installation and Commissioning Mounting bracket SIPROTEC SIEMENS ERROR 7SA631 Tpuy‚††ƒyh‡“ MENU Ã6 ! ÃxW CTRL ENTER Annunciation Local Meas. Val. Remote Trip log Test Normal Mounting bracket Figure 8-5 Installing a 7SA631 with graphic display in a rack or cubicle (housing width...
Page 551 Installation and Commissioning Mounting bracket SIPROTEC SIEMENS ERROR 7SA612 H6DIÃH@IV 01/04 Annunciation Measurement MENU ENTER Annunciation Meas. Val. Trip log Mounting bracket Figure 8-6 Installing a 7SA612 with a four-line display in a rack or cubicle (housing width of 19 inch rack)
Page 552 Installation and Commissioning Mounting with For mounting the device proceed as follows: Detached Operator Fasten device of housing size with 6 screws and device of housing size with Panel 10 screws. For dimensions see Section 10.20 (Figure 10-13 and 10-14). Connect the ground on the rear plate of the device to the protective ground of the panel.
Page 553: Termination Variants
Installation and Commissioning 8.1.2 Termination variants Outline diagrams are shown in Appendix A, Section A.2. Connection examples for current and voltage transformer circuits are provided in Appendix A, Section A.3. It must be checked that the setting configuration of the 3RZHU 6\VWHP 'DWD 36\VWHP 'DWD corresponds with the connections to the device.
Page 554 Installation and Commissioning Binary Inputs and The configuration of the binary in and outputs, i.e. the individual adaptation to the plant Outputs conditions, is described in Section 5.2. The connections to the plant are dependent on this actual configuration. The presettings of the device are listed in Appendix A, Section A.4.
Page 555 Installation and Commissioning So the circuit breaker trip coil does not remain energized in the above case, R derived as: –   TC (LOW) ⋅ ---------------------------------------------- -   TC (LOW) Constant current with BI on (= 1,7 mA) BI (HIGH) Minimum control voltage for BI BI min...
Page 556 Installation and Commissioning If the transmission scheme 7HOHSURW 'LVW = 3LORW ZLUH FRPS (address Pilot Wire ) is applied in the Distance Protection, the user has to make sure that the closed Protection current loop is supplied with enough auxiliary voltage. The function itself is described in Subsection 6.4.1.8.
Page 557: Hardware Modifications
Installation and Commissioning 8.1.3 Hardware Modifications 8.1.3.1 General Hardware modifications might be necessary or desired. For example, a change of the pick-up threshold for some of the binary inputs might be advantageous in certain applications. Terminating resistors might be required for the communication bus. In either case, hardware modifications are needed.
Page 558: Disassembly Of The Device
Installation and Commissioning Note: If the 7SA6 performs trip circuit monitoring, two binary inputs, or one binary input and a resistor, are connected in series. The pick-up voltage of these inputs must be less than half of the nominal DC voltage of the trip circuit. Type of Contact for Input and output boards can contain relays of which the contact can be set as normally Binary Outputs...
Page 559 Installation and Commissioning If there are additional interfaces on location “B” and “D” next to the interfaces at location “A” to “C”, remove the screws located diagonally to the interfaces. This activity is not necessary if the device is for surface mounting. Remove the four or six caps on the front cover and loosen the screws that become accessible.
Page 560 Installation and Commissioning Processor printed circuit board C–CPU–2 Input/output printed circuit board C–I/O–2 Input/output printed circuit board C–I/O–11 Slot 5 Slot 19 7SA610∗–∗A/E/J BI1 to Binary inputs (BI) 7SA610∗–∗B/F/K BI1 to BI6 and Binary inputs (BI) Figure 8-8 Front view of device of housing size after removal of the front cover (simplified and scaled down) 8-16...
Page 561 Installation and Commissioning Processor printed circuit board C–CPU–2 Input/output printed circuit board C–I/O–1 Input/output printed circuit board C–I/O–2 Input/output printed circuit board C–I/O–11 Input/output printed circuit board B–I/O–2 Slot 5 Slot 19 Slot 33 7SA6∗1∗–∗A/E/J (BI) BI1 to BI6 to Binary inputs BI13 7SA6∗1∗–∗B/F/K...
Page 562 Installation and Commissioning Processor p. c. b. C–CPU–2 Input/output p. c. b. C–I/O–1 Input/output p. c. b. C–I/O–2 Input/output p. c. b. C–I/O–11 Input/output p. c. b. B–I/O–2 42 1 Slot 5 Slot 19 Slot 33 Slot 19 Slot 33 7SA6∗2∗–∗A/E/J BI1 to BI6 to...
Page 563: Jumper Settings On Printed Circuit Boards
Installation and Commissioning 8.1.3.3 Jumper Settings on Printed Circuit Boards Processor Board The layout of the printed circuit board of the processor printed circuit board C-CPU-2 C-CPU-2 is illustrated in Figure 8-11. The set nominal voltage of the integrated current supply is checked according to Table 8-1, the quiescent state of the life contact according to Table 8-2 and the selected operating voltage of the binary inputs BI1 to BI5 according to Table 8-4 and the integrated interface RS232 / RS485 according to Table 8-5 to 8-7.
Page 564 Installation and Commissioning Table 8-1 Jumper settings for the nominal voltage of the integrated power supply on the processor printed circuit board C-CPU-2 Jumper Nominal Voltage 24 to 48 VDC 60 to 125 VDC 110 to 250 VDC, 115 VAC none 1–2 2–3...
Page 565 Installation and Commissioning Table 8-5 Jumper setting of CTS (Clear-To-Send) on the processor printed circuit board C-CPU-2 Jumper /CTS of interface RS232 /CTS controlled by /RTS X111 1–2 2–3 The jumper presetting is dependent on the order code of the device. For RS232 (12th digit of order code = 0, 1): setting 1–2 For RS485 (12th digit of order code = 2:...
Page 566 Installation and Commissioning Input/Output Board The layout of the printed circuit board for the input/output board C-I/O–1 is illustrated C-I/O-1 in Figure 8-13. (AD2) (AD1) (AD0) input/output board Figure 8-13 C–I/O–1 with the jumpers necessary for the control of settings For the input/output boards C–I/O–1 (Figure 8-13, Slot 19) of device version 7SA6*1-A...
Page 567 Installation and Commissioning Table 8-7 Jumper setting for the contact type of relay for BO9 Quiescent state Quiescent state Module Jumper Presetting open (NO contact) closed (NC contact) Slot 19 1–2 2–3 1–2 With device versions 7SA6*2–A... and 7SA6*2–B... (housing size ) the contact of input/output boards C–I/O–1 (Figure 8-13, slot 19 left and right, as well as slot 33 left) the relays for the binary outputs BO9, BO17 and BO25 (depending on the version) can...
Page 568 Installation and Commissioning Table 8-10 Jumper setting of control voltages of binary inputs BI6 to BI29 on the binary in- put/output boards C– I/O–1 for housing size Binary input Threshold Threshold Jumper Slot 33 Slot 19 Slot 19 17 V 73 V left right...
Page 569 Installation and Commissioning Input/Output Board The layout of the printed circuit board for the input/output board C-I/O–2 is illustrated C–I/O–2 in Figure 8-14. (AD0) (AD1) (AD2) The input/output board C-I/O–2 Figure 8-14 with the jumpers necessary for the setting check The contact of the relay for the binary output BO6 can be configured as NO or NC contact (see also General Diagrams in Appendix A, Section A.2).
Page 570 Installation and Commissioning Table 8-13 Jumper setting of relay contact for BO6. Jumper Quiescent state closed Presetting Quiescent state open (NC contact) (NO contact) 1–2 2–3 1–2 The set nominal currents of the current input transformers are checked on the input/ output board C–I/O–2.
Page 571 Installation and Commissioning Input/Output Board The layout of the printed circuit board for the input/output board C-I/O–11 is illustrated C–I/O–11 in Figure 8-15. (AD2) (AD1) (AD0) The input/output board C-I/O–11 Figure 8-15 with the jumpers necessary for the control of settings. Table 8-15 Jumper setting of control voltages of the binary inputs BI6 and BI7 on the binary input/output boards C–...
Page 572 Installation and Commissioning The set nominal currents of the current input transformer are checked on the input/ output board C–I/O–11. All jumpers must be set to the same nominal current, i.e. one jumper for each input transformer (X61 to X64) and one common jumper X60. However: there is no jumper X64 for the version with sensitive earth current input (input transformer T8).
Page 573 Installation and Commissioning Input/Output Board The layout of the printed circuit board for the input/output board B–I/O–2 is illustrated B–I/O–2 in Figure 8-16. The input/output board B–I/O–2 Figure 8-16 with the jumpers necessary for the setting check Check for control voltages of binary inputs: BI8 to BI20 (for housing size ) according to Table 8-17.
Page 574 Installation and Commissioning Table 8-17 Jumper setting of control voltages of the binary inputs BI8 and BI20 on the binary input/output boards B–I/O–2 for version 7SA6*1–B... Binary inputs Jumper Threshold 17 V Threshold 73 V Slot 19 1–2 2–3 1–2 2–3 BI10 1–2...
Page 575 Installation and Commissioning Jumpers X71, X72 and X73 on the input/output board C–I/O–2 are for setting the bus address and must not be changed. Table 8-19 and 8-20 lists the jumper presettings. The mounting locations are shown in Figures 8-8 to 8-10. Table 8-19 Jumper setting of printed circuit board addresses of the binary input/output boards B–...
Page 576: Interface Modules
Installation and Commissioning 8.1.3.4 Interface Modules The interface modules are located on the processor printed circuit board C–CPU–2 (å in Figure 8-8 to 8-10). Figure 8-17 shows the printed circuit board and the modules. Mounting Location (Rear Side of Housing) Analog Output System Interface or Analog Output...
Page 577 Installation and Commissioning Serial Interfaces Using interfaces with bus capability requires a termination of the last device at the bus, with Bus Capability i. e. terminating resistors must be switched to the line. Talking about the 7SA6 this refers to the version with the RS485 interface or the Profibus interfaces. The terminating resistors are located on the RS485 interface module or the Profibus interface module that is mounted to the processor input/output board C–CPU–2 (å...
Page 578 Module The mounting location on the processor circuit board C–CPU–2 is “B” and/or “D”, dependent on the version (see Figure 8-17). C53207-A322- AN20 SIEMENS B140-1 Figure 8-20 Interface module with the analog output AN20 Replacing The interface modules can be replaced. Refer to Figure 8-17 for physical arrangement Interface Modules of the modules.
Page 579: Reassembly Of Device
Installation and Commissioning Table 8-22 Exchangeable interface modules Interface Mounting Location Exchange Module RS232 RS485 LWL 820 nm System Interface Profibus FMS RS485 or Analog Output Profibus FMS single-ended ring Profibus FMS double-ended ring AN20 Analog Output AN20 8.1.3.5 Reassembly of Device To reassemble the device, proceed as follows: Carefully insert the boards into the case.
Page 580: Checking The Connections
Installation and Commissioning Checking the Connections 8.2.1 Data Connections The following tables list the pin-assignments for the various serial interfaces of the device and the time synchronization interface. PC Operating When the recommended communication cable is used, correct connection between ®...
Page 581 Installation and Commissioning RS485 The RS485 interface is capable of half-duplex service with the signals A/A’ and B/B’ Termination with a common relative potential C/C’ (DGND). Verify that only the last device on the bus has the terminating resistors connected, and that the other devices on the bus do not.
Page 582: Checking Power Plant Connections
Installation and Commissioning The character idle state for the optical fibre interface is “Light off.” If this setting is to ® be changed, use the operating program DIGSI 4, as described in Section 5.6. Warning! Laser injection! Do not look directly into the fibre-optic elements! 8.2.2 Checking Power Plant Connections Warning!
Page 583 Installation and Commissioning Check the functions of all test switches that may be installed for the purposes of secondary testing and isolation of the device. Of particular importance are test switches in current transformer circuits. Be sure these switches short-circuit the current transformers when they are in the test mode (open).
Page 584: Commissioning
Installation and Commissioning Commissioning Warning! Hazardous voltages are present in this electrical equipment during operation. Non– observance of the safety rules can result in severe personal injury or property damage. Only qualified personnel shall work on and around this equipment after becoming thoroughly familiar with all warnings and safety notices of this manual as well as with the applicable safety regulations.
Page 585: Testing Mode And Transmission Blocking
Installation and Commissioning 8.3.1 Testing mode and transmission blocking If the device is connected to a substation control system or a server, the user is able to modify, in some protocols, information that is transmitted to the substation (see Section A.5 “Protocol Dependent Functions” in Appendix A). In the WHVWLQJ PRGH all messages sent from a SIPROTEC ®...
Page 586 Installation and Commissioning Figure 8-21 Dialog Box: Generate indications Clicking for the first time onto one of the field in column $FWLRQ you will be asked for Changing the Operating State password n° 6 (for hardware test menus). Having entered the correct password messages can be issued.
Page 587: Checking The Binary Inputs And Outputs
Installation and Commissioning 8.3.3 Checking the Binary Inputs and Outputs ® Preliminary Notes The binary inputs, outputs, and LEDs of a SIPROTEC 4 device can be individually ® and precisely controlled using DIGSI 4. This feature is used to verify control wiring from the device to plant equipment (operational checks), during commissioning.
Page 588 Installation and Commissioning with an appropriately marked switching area. By double-clicking in an area, components within the associated group can be turned on or off. In the 6WDWXV column, the present (physical) state of the hardware component is displayed. The binary inputs and outputs are indicated by the symbol of an open or closed switch symbol, the LEDs by the symbol of a dark or illuminated LED symbol.
Page 589: Checking Analog Outputs
Installation and Commissioning The response of the device must be checked in the ,VW–column of the dialogue box. To do this, the dialogue box must be updated. The options may be found below under the margin heading “Updating the Display”. If however the effect of a binary input must be checked without carrying out any switching in the plant, it is possible to trigger individual binary inputs with the hardware test function.
Page 590 Due to the variety of application options and the available system configurations, it is not possible to make a detailed description of the necessary tests. It is important to consider the local conditions and the protection and plant drawings. It is advised to isolate the circuit breaker of the tested feeder at both sides, i.e.
Page 591 Installation and Commissioning binary input functions “!%) 6WDUW /” and possibly “!%) UHOHDVH” (in spontaneous or fault messages). Trip command depending on configuration. single-pole starting by trip command of external protection in phase L3: binary input functions “!%) 6WDUW /” and possibly “!%) UHOHDVH” (in spontaneous or fault messages).
Page 592: Current, Voltage, And Phase Rotation Checks
Installation and Commissioning 8.3.6 Current, Voltage, and Phase Rotation Checks Load Current The connections of the current and voltage transformers are tested using primary ≥ 10 % I quantities. Secondary load current of at least 10 % of the nominal current of the device is necessary.
Page 593: Directional Checks With Load Current
Installation and Commissioning If the VT mcb is open the message “!)$,/%XV 97 21” appears, if it is closed the message “!)$,/%XV 97 2))” is displayed. Switch off the protected power line. 8.3.7 Directional Checks with Load Current Load Current The connections of the current and voltage transformers are checked using load ≥...
Page 594: Polarity Check For The Voltage Input U 4
Installation and Commissioning All six measured loops must have the same impedance components (R and X). Small variations may result due to the non-symmetry of the measured values. In addition the following applies for all impedances when the load is in the first quadrant: R, X both positive, when power flows into the line, R, X both negative, when power flows towards the busbar.
Page 595 Installation and Commissioning If necessary different transformation ratios of the voltage transformers on the busbar and the feeder may have to be considered under address 8OLQH 8V\QF. The synchronism and voltage check must be switched RQ under address )&7 6\QFKURQLVP.
Page 596: Earth Fault Check In A Non-Earthed System
Installation and Commissioning For the synchro-check the program 8V\QF 8OLQH! = <HV (address ) and 6<1&&+(&. = <HV (address $) is set. Open the VT mcb of the busbar voltage. A request for synchro-check measurement is initiated via binary input (FNo. “!6\QF 6WDUW”).
Page 597: Polarity Check For The Current Measuring Input I 4
Installation and Commissioning Isolate the line and earth it on both ends. During the whole testing procedure the line must be open at the remote end. Make a test connection between a single phase and ground. On overhead lines it can be connected anywhere, however, it must be located behind the current transformers (looking from the busbar of the feeder to be checked).
Page 598 Installation and Commissioning DANGER! Working on measurement transformers requires the highest precautions! Short-circuit the secondary side of the current transformers before any current connections to the device are opened! Measured on the To generate a displacement voltage, the e–n winding of one phase in the voltage Protected Line transformer set (e.g.
Page 599 Installation and Commissioning Busbar hy‡r…h‡v‰ry’Ã qv†p‚rp‡Ãur…r i’ƒh††Ã ‚rÃƒuh†r ’ ’ ’ ’ 7SA6 Line Figure 8-25 Polarity testing for I , example with current transformers configured in a Holmgreen-connection Attention! If parameters were changed for this test, they must be returned to their original state after completion of the test! Measured on a If I...
Page 600 Installation and Commissioning Bus- hy‡r…h‡v‰ry’ qv†p‚rp‡ ur…r i’ƒh††Ã‚r ƒuh†r ’ ’ ’ ’ ’ ’ 6$ 6$ 9r‰vprÃˆqr…Ã‡r†‡ ’ Parallel line Line Figure 8-26 Polarity check of I , example with earth current of a parallel line Measured in a If I is the earth current measured in the star-point of a power transformer and intended Power Transformer...
Page 601: Measuring The Operating Time Of The Circuit Breaker
Installation and Commissioning Bus- ’ ’ ’ Test source 6$ ’ Transformer Line Figure 8-27 Polarity check of I , example with earth current from a power transformer star-point After switching the test source on and off again, the direction indication must be checked: In the fault messages (refer also to Sub-section 7.1.1.3) at least the following alarms must be present “() 3LFNXS”...
Page 602: Testing Of The Teleprotection System
Installation and Commissioning Set the calculated time under address as 7&% FORVH (under power system data 2). Select the next lower adjustable value. Note: The operating time of the accelerated output relays for command tripping is taken into consideration by the device itself. The tripping command is to be allocated to a such relay.
Page 603 Installation and Commissioning 'LV must be set to (QDEOHG in Address . The protection relays at both line ends must be operating. First the quiescent current loop of the pilot wire comparison is not supplied with auxiliary voltage. A fault is simulated outside of zone Z1, but within zone Z1B. Since stage Z1B is blocked, the Distance Protection is only tripped in a higher-leveled zone (usually with T2).
Page 604 Installation and Commissioning The function of the permissive overreach transfer schemes is described in Subsubsections 6.4.1.4 to 6.4.1.6. In the case of these release schemes, a simple check of the transmission paths from one line end is possible using the echo function. The echo function must be activated at both line ends, i.e.
Page 605: Teleprotection With Earth Fault Protection
Installation and Commissioning transmitting, the receiving end may not generate a trip signal, unless this results from a higher distance stage. After removal of the simulated fault at the transmitting end, the receiving end remains blocked for the additional duration of the transmit prolongation time of the transmitting end (6HQG 3URORQJ, address ).
Page 606 Installation and Commissioning If the signal transmission path for the earth fault protection is the same path that was already tested in conjunction with the distance protection according to Subsection 8.3.12.1, then this Subsection 8.3.12.2 is also of no consequence and may be omitted. For the functional check of the earth fault protection signal transmission, the distance protection should be disabled, to avoid interference of the tests by signals from the distance protection: address )&7 'LVWDQFH = 2)).
Page 607: Transfer Trip Signal Transmission For Breaker Failure Protection And/Or Stub Protection
Installation and Commissioning Prerequisites: 7HOHSURWHFWLRQ IRU (DUWK IDXOW RYHUFXUU 7HOHSURW Blocking Scheme () in address (Section 5.1) is set to a comparison scheme with a blocking signal, i.e. %ORFNLQJ; furthermore the setting in address must be )&7 7HOHS () 21.
Page 608: Testing User-Defined Functions
Installation and Commissioning permissive underreach (Sub-section 8.3.12.1 under “Permissive Underreach Transfer”); however the received signal causes a direct trip. For the remote transmission, the external command input is employed on the receiving line end; it is therefore a prerequisite that: in address the setting '77 'LUHFW 7ULS is set to (QDEOHG and that in address the setting '77 'LUHFW 7ULS is set to 21.
Page 609: Triggering Oscillographic Recordings
Installation and Commissioning switched on and off from the device via the integrated control element. The feedback information of the circuit breaker position injected via binary inputs is read out at the device and compared with the actual breaker position. For devices with graphic display this is easy to do with the control display.
Page 610 Installation and Commissioning ® 4, click on 7HVW in the left part of the Triggering with To trigger oscillographic recording with DIGSI ® window. Double click the entry 7HVW :DYH )RUP in the list in the right part of the DIGSI window to trigger the recording.
Page 611: Final Preparation Of The Device
Installation and Commissioning Final Preparation of the Device Tighten the used screws at the terminals; those ones not being used should be slightly fastened. Ensure all pin connectors are properly inserted. Caution! Do not use force! The tightening torques according to Chapter 2 must not be exceeded as the threads and terminal chambers may otherwise be damaged! Verify that all service settings are correct.
Page 612 Installation and Commissioning 8-68 7SA6 Manual C53000-G1176-C133-1...
Page 613: Routine Checks And Maintenance
Routine Checks and Maintenance General comments about the routine checks and maintenance activities to ensure the high reliability of the 7SA6 are given in this chapter. A procedure for replacing compo- nents such as the buffer battery is discussed. Troubleshooting advice is provided. A procedure for replacing the power supply fuse is described.
Page 614: General
Routine Checks and Maintenance General ® Siemens numerical protective and control SIPROTEC 4 devices are designed to re- quire no special maintenance. All measurement and signal processing circuits are fully solid state. All input modules are also fully solid state. The output relays are hermeti- cally sealed or provided with protective covers.
Page 615: Routine Checks
Routine Checks and Maintenance Routine Checks Routine checks of the characteristic curves or pick-up values of the protective ele- ments are not necessary because they form part of the continuously supervised firmware programs. The normally scheduled interval for plant maintenance can be used for carrying out operational testing of the protective and control equipment.
Page 616: Maintenance
Routine Checks and Maintenance Maintenance 9.3.1 Replacing the Buffer Battery The battery is used to retain the annunciation memories and fault recording data in the event of an interruption of the power supply. The battery also maintains the internal system clock with calendar after a loss of the power supply. The battery is checked by the processor at regular intervals.
Page 617 Routine Checks and Maintenance Caution! Electrostatic discharges through the connections of the components, wiring, and con- nectors must be avoided. Wearing a grounded wrist strap is preferred; otherwise, touch a grounded metal part before handling the internal components. Warning! Hazardous voltages may exist in the device, even after the power supply is discon- nected and the boards are withdrawn from the case! Capacitors can still be charged! Carefully pull off the front panel and bend it aside.
Page 618: Battery Change On Devices With Mounting Housing With Detached Operator Panel
Routine Checks and Maintenance Remove the old battery from the snap-on connector using the plastic battery grip shown in Figure 9-1. Remove the battery grip from the old battery, and place the grip on the new battery. Observing the polarity and firmly insert the new battery into the snap-on connector shown in Figure 9-1.
Page 619 Routine Checks and Maintenance Caution! Do not short the battery! Do not reverse the polarity of the battery! Do not lay the bat- tery on the ground mat used to protect components from electrostatic discharges! Do not recharge the battery! Remove the covers at the front panel of the operator control element.
Page 620 Routine Checks and Maintenance If the internal system clock is not automatically synchronized via a serial interface, then the clock should be set at this point. Refer to Subsection 7.2.1 if assistance is needed to set the clock. Warning! The used battery contains Lithium. Do not throw the battery into the trash! It must be disposed off in line with the applicable regulations! Do not reverse the polarity! Do not completely discharge! Do not throw the bat- tery into a fire! Explosion hazard!
Page 621: Troubleshooting
Routine Checks and Maintenance Troubleshooting If a device reports a problem or failure, the procedure below is recommended. If none of the LEDs on the front panel are lit, then verify: Are the printed circuit boards put into the correct slots and properly covered by the front panel? Are the plug connectors of the flat cable plugged into the printed circuit boards and do the lockings snap properly?
Page 622 PC after commissioning. The device is then in-service. Further Assistance If these steps do not resolve the problem, please call your local Siemens representa- tive or customer hot-line. Our customer hot-line needs the following information to assist you: −...
Page 623 Routine Checks and Maintenance Figure 9-6 Retrieving the device data in the device properties 9-11 7SA6 Manual C53000-G1176-C133-1...
Page 624: Corrective Action / Repairs
Routine Checks and Maintenance Corrective Action / Repairs 9.5.1 Software Procedures A restart of the processor system, as described in Section 9.2, can be done as an at- tempt to solve a problem. Setting changes can be made to solve simple problems, such as sporadic alarms from elements of the measured value supervision.
Page 625 Routine Checks and Maintenance Carefully take off the front panel. The front panel is connected to the CPU board with a short ribbon-cable. On devices with detached operator panel, the front panel can be taken off directly (without a ribbon cable). Caution! Electrostatic discharges through the connections of the components, wiring, and con- nectors must be avoided! Wearing a grounded wrist strap is preferred.
Page 626 Figure 9-7 Power supply mini-fuse CPU board Table 9-1 Assigning of the mini-fuse rating to the device auxiliary voltage rating 7SA6∗∗∗ Version Rated Auxiliary Voltages Fuse Type –2∗∗∗∗–∗∗∗∗ 24 V to 48 V— T4H250V –4∗∗∗∗–∗∗∗∗ 60 V to 125 V— T2H250V ∼...
Page 627 Routine Checks and Maintenance The following steps are not applicable for the surface mount version: Align and fix the rear interfaces again. Attach all D-subminiature plugs to the matching D-subminiature sockets. Tighten all the optical fibre connectors. When connecting a FC-connector make sure that its lug is plugged properly into the slot of the socket and it does not come out when tightening the knurled nut.
Page 628: Return
Routine Checks and Maintenance Return Siemens strongly recommends that no further repairs on defective devices, boards, or components be done. Special electronic components are used for which proce- dures for preventing electrostatic discharges must be followed. Most importantly, spe- cial production techniques are necessary to avoid damaging the wave-soldered multi- layer boards, the sensitive components, and the protective varnish.
Page 629: Technical Data
Technical Data ® This chapter provides the technical data of the SIPROTEC 4 7SA6 device and its in- dividual functions, including the limiting values that must not be exceeded under any circumstances. The electrical and functional data of fully equipped 7SA6 devices are followed by the mechanical data, with dimensional drawings.
Page 630: General Device Data
Technical Data 10.1 General Device Data 10.1.1 Analog Inputs Nominal frequency 50 Hz or 60 Hz(adjustable) Current Inputs Nominal current 1 A or 5 A Power consumption per phase and earth path – at I = 1 A approx. 0.05 VA –...
Page 631: Binary Inputs And Outputs
Technical Data Permissible AC ripple voltage, ≤15 % of nominal power supply Peak to peak Power consumption – quiescient approx. 5 W ∗ ∗ – energized with 7SA610 – A/E/J approx. 8.6 W ∗ ∗ with 7SA610 – B/F/K approx. 7.4 W ∗...
Page 632 Technical Data Nominal voltage 24 VDC to 250 VDC in 3 ranges, bipolar Switching thresholds adjustable with jumpers ≥ 19 VDC – for nominal voltages 24/48 VDC pick-up ≤ 14 VDC 60/110/125 VDC drop-off ≥ 88 VDC – for nominal voltages 110/125/ pick-up ≤...
Page 633: Communications Interfaces
Technical Data Alarm relay 1 with NC contact or NO contact (switch selectable) Switching capability MAKE 30 W/VA BREAK 20 VA 30 W resistive 25 W for L/R ≤ 50 ms Switching voltage 250 V Permissible current 1 A permanent 10.1.4 Communications Interfaces Operating Interface –...
Page 634 Technical Data System (SCADA) RS232/RS485/Optical floating interface for data transfer Interface (optional) to a master terminal Profibus RS485/Profibus Optical acc. to ordered version RS232 – Connectionfor flush mounted case rear panel, mounting location “B” 9-pin DSUB socket for surface mounted case at the terminal on the case bottom –...
Page 635: Electrical Tests
Technical Data Profibus LWL – Connector Type ST–connector single-ended ring / double-ended ring acc. to ordered version for flush mounted case rear panel, mounting location “B” for surface mounted case on the case bottom – Transmission speed up to 1.5 MBd recommended: >...
Page 636 Technical Data binary inputs, and communications interfaces – High voltage test (routine test) 3.5 kVDC only power supply and binary inputs – High Voltage Test (routine test) 500 V (rms), 50 Hz only isolated communications interfaces – Impulse voltage test (type test) 5 kV (peak);...
Page 637: Mechanical Stress Tests
Technical Data – Radiated electromagnetic interference 35 V/m; 25 MHz to 1000 MHz ANSI/IEEE Std C37.90.2 amplitude and pulse modulated – Damped oscillations 2.5 kV (peak value), polarity alternating like IEC 60694, IEC 61000–4–12 100 kHz, 1 MHz, 10 MHz and 50 MHz, = 200 Ω...
Page 638: Climatic Stress Tests
Technical Data – Continuous shock half-sine shaped IEC 60255–21–2, class 1 acceleration 10 g; duration 16 ms; IEC 60068–2–29 1000 shocks in each direction of 3 orthogonal axes 10.1.7 Climatic Stress Tests Ambient Standards: IEC 60255–6 Temperatures – recommended operating temperature –5 °C to +55 °C (+23 °F to +131 °F) if max.
Page 639: Construction
Technical Data • Do not withdraw or insert individual modules or boards while the protective device is energized. When handling the modules or the boards outside of the case, stand- ards for components sensitive to electrostatic discharge (ESD) must be observed. The modules, boards, and device are not endangered when the device is complete- ly assembled.
Page 640: Distance Protection
Technical Data 10.2 Distance Protection Earth Impedance –0.33 to 7.00 (steps 0.01) Matching –0.33 to 7.00 (steps 0.01) separate for first and higher zones 0.000 to 4.000 (steps 0.001) PHI(K –135.00° to +135.00° (steps 0.01) separate for first and higher zones Mutual Impedance 0.00 to 8.00 (steps 0.01)
Page 641 Technical Data Voltage and angle-dependent current pickup (U/I/ϕ) Characteristic different steps with settable inclinations Minimum current Iph> 0.10 A to 4.00 A ) (steps 0.01 A) Current in fault angle range Iϕ> 0.10 A to 2.00 A ) (steps 0.01 A) Undervoltage phase–earth Uphe 20 V to 70 V (steps 1 V) Undervoltage phase–phase Uphph...
Page 642: Power Swing Supplement
Technical Data ∆X Measuring tolerances ≤ ≤ ϕ ≤ for 30° 90° ------- - with sinusoidal quantities N > and U ∆R ≤ ≤ ϕ ≤ for 0° 60° ------- - ∆Z ≤ ≤ ϕ ϕ ≤ for –30° 30° –...
Page 643: Distance Protection Teleprotection Schemes
Technical Data 10.4 Distance Protection Teleprotection Schemes Mode For two line ends with one channel for each direction or with three channels for each direction (for phase segregated transmission) For three line ends with one channel for each direction and opposite line end Underreach Method...
Page 644: Earth Fault Protection In Earthed Systems
Technical Data 10.5 Earth Fault Protection in Earthed Systems Characteristics Definite time stages (definite) >>>,3I >>,3I > Inverse time stage (IDMT) one of the characteristics according to Figure 10-1 to 10-11 can be selected Voltage-dependent stage (U inverse) characteristic according to 10-8 High Set Stage Pickup value >>>...
Page 645 Technical Data Overcurrent stage Pickup value 0.05 A to 4.00 A (steps 0.01 A) (inverse time acc. 0.003 A to 4.000 A (steps 0.001 A IEC) Time factor 0.05 s to 3.00 s (steps 0.01 s) 3I0P or ∞ (ineffective) Additional time delay 0.00 s to 30.00 s (steps 0.01 s)
Page 646 Technical Data characteristics see Figure 10-5 Tolerances times 1 % of set value or 10 ms ≥ 0.5 Drop-off to pick-up ratio current approx. 0.95 for I/I ≥ 1 V voltage approx. 0.95 for 3U The set times are pure delay times. 1) Secondary values based on I = 1 A;...
Page 647 Technical Data t [s] t [s] 0.05 0.05 0.05 0.05 13.5 0.14 ⋅ ⋅ Very inverse: Normal inverse: -------------------------- - T -------------------------------- - T 0.02 ⁄ ⁄ – (Type A) I I p – (Type B) 1000 t [s] t [s] 0.1 0.2 0.05 0.05...
Page 648 Technical Data t [s] t [s] D [s] D [s] 0.07 0.07 0.05 0.05     8.9341 0.2663 ⋅   ⋅   0.17966 INVERSE ------------------------------------- - 0.03393 SHORT INVERSE ------------------------------------- -  2.0938  ⁄  1.2969 ...
Page 649 Technical Data t [s] t [s] D [s] D [s] 0.05 0.05     3,922 ⋅   5.64 VERY INVERSE -------------------------- - 0.0982   ⋅ -------------------------- - 0.02434 EXTREMELY INVERSE   ⁄   – ⁄...
Page 650 Technical Data UÃ"DQ€h‘ UÃ"DQ 1.00 1.70 1.35 UÃ"DQ€v I/,3 "DQ²A68UPS ⋅ – ln(I/3I0P) Logarithmic inverse: 3I0Pmax 3I0P ≥ Note: For currents I/,3 35 the tripping time is constant. Figure 10-4 Trip time characteristics of inverse time overcurrent protection with logarithmic inverse characteristic Parameter: Vv‰Ã€vv...
Page 651: Earth Fault Protection Teleprotection Schemes
Technical Data 10.6 Earth Fault Protection Teleprotection Schemes Mode For two line ends with one channel for each direction with three channels for each direction For three line ends with one channel for each direction and oposite line end Comparison Schemes directional comparison pickup scheme Schemes...
Page 652: External Direct And Remote Tripping
Technical Data 10.8 External Direct and Remote Tripping External Trip of the Operating time, total approx. 11 ms Local Breaker 0.00 s to 30.00 s, ∞ Trip time delay (steps 0.01 s) or ∞ (ineffective) Time expiry tolerance 1 % of set value or 10 ms The set time is a pure delay time.
Page 653: Overcurrent Protection
Technical Data 10.9 Overcurrent Protection Operating Modes As emergency overcurrent protection or back-up overcurrent protection: Emergency overcurrent protection operates on failure of the measured voltage, – on trip of a voltage secondary miniature circuit breaker (via binary input) – on detection of a fuse failure in the voltage secondary circuit Back-up overcurrent protection operates independent on any events...
Page 654 Technical Data Overcurrent stages Pickup values (phases) 0.10 A to 25.00 A (steps 0.01 A) or ∞ (ineffective) (earth) 0.05 A to 25.00 A (steps 0.01 A) or ∞ (ineffective) Time delays (phases) 0.00 s to 30.00 s (steps 0.01 s) IPh>...
Page 655 Technical Data Time factors (phases) 0.05 s to 3.00 s (steps 0.01 s) or ∞ (ineffective) (earth) 0.05 s to 3.00 s (steps 0.01 s) 3I0P or ∞ (ineffective) Additional time delays (phases.)0.00 s to 30.00 s (steps 0.01 s) IPadd (earth) 0.00 s to 30.00 s (steps 0.01 s)
Page 656: High-Current Switch-On-To-Fault Protection
Technical Data 10.10 High-Current Switch-On-To-Fault Protection Pick-up High current pick-up I>>> 1.00 A to 25.00 A (steps 0.01 A) Drop-off to pick-up ratio approx. 0.90 ≤ 3 % of set value or 1% of I Pick-up tolerance Times Shortest tripping time approx.
Page 657: Automatic Reclosure Function
Technical Data 10.12 Automatic Reclosure Function Automatic Number of reclosures max. 8, Reclosures first 4 with individual settings Operating modes 1-pole, 3-pole or 1-/3-pole Control with pick-up or trip command 0.01 s to 300.00 s; ∞ Action times Initiation possible without pick-up (steps 0.01 s) and action time Different dead times before...
Page 658: Synchronism And Voltage Check (Dead-Line / Dead-Bus Check)
Technical Data 10.13 Synchronism and Voltage Check (Dead-line / Dead-bus Check) Operating Modes Operating modes with automatic reclosure Synchronism check, dead-line / live-bus dead-bus / live-line, dead-bus and dead-line bypassing or similar combinations of the above Synchronism Closing possible under non-synchronous system conditions (with consideration of circuit-breaker operating time)
Page 659: Voltage Protection
Technical Data 10.14 Voltage Protection Overvoltage Overvoltage >> 1.0 V to 170.0 V (steps 0.1 V) 0.00 s to 30.00 s; ∞ Phase–Earth Time delay (steps 0.01 s) UPh>> Overvoltage > 1.0 V to 170.0 V (steps 0.1 V) 0.00 s to 30.00 s; ∞ Time delay (steps 0.01 s) UPh>...
Page 660 Technical Data Pick-up time approx. 75 ms Drop-off time approx. 30 ms Tolerances voltages 3 % of set value or 1 V times 1 % of set value or 10 ms Undervoltage Undervoltage << 1.0 V to 100.0 V (steps 0.1 V) 0.00 s to 30.00 s;...
Page 661: Fault Location
Technical Data 10.15 Fault Location Start with trip command or drop-off 0.005 Ω/km to 6.500 Ω/km Setting range reactance (secondary) (steps 0.001 Ω/km) or 0.005 Ω/mile to 10.000 Ω/mile (steps 0.001 Ω/mile) Parallel line compensation can be switched on/off Set values are the same as for distance protection (see Section 10.2) Load current compensation correction of the X-value...
Page 662 Technical Data Initiation For circuit breaker failure protection single-pole tripping internal Conditions three-pole tripping internal single-pole tripping external three-pole tripping external three-pole tripping without current ) via binary inputs Times Pick-up time approx. 7 ms with measured quantities present prior to start, approx.
Page 663: Thermal Overload Protection
Technical Data 10.17 Thermal Overload Protection Setting Ranges Factor k according to IEC 60255–8 0.10 to 4.00 (steps 0.01) τ Time factor 1.0 min to 999.9 min (steps 0.1 min) Θ Alarm temperaturerise /Θ 50 % to 100 % related to the trip alarm trip temperaturerise...
Page 664 Technical Data t [min] t [min] Parameter: Setting Value; Time Factor τ [min] 1000 Parameter: Setting Value; Time Factor τ [min] 1000 0.05 0.05 6 7 8 10 12 6 7 8 10 12 · · I / (k I / (k without Previous Load Current: with 90 % Previous Load Current: ...
Page 665: Monitoring Functions
Technical Data 10.18 Monitoring Functions Measured Values Current sum = |I · I |> SUM.I Threshold · I + SUM.I factor· I – SUM.I Threshold 0.05 A to 2.00 A (steps 0.01) – SUM.I factor 0.00 to 0.95 (steps 0.01) Voltage sum = |U | >...
Page 666: Supplementary Functions
Technical Data 10.19 Supplementary Functions Measured Value Operational measured values of currents I ; 3I Processing in A primary and secondary and in % I – Tolerance 0.5 % of measured value or 0.5 % of I Operational measured values of voltages U L1–E L2–E L3–E...
Page 667 Technical Data Long–term mean value dmd; I dmd; I dmd; I dmd; Pdmd; Pdmd Forw, Pdmd Rev; Qdmd; QdmdForw; QdmdRev; Sdmd in primary values Minimum and maximum values d; I d; I d; I L1–E L2–E L3–E L1–L2 L2–L3 L3–L1 PForw;...
Page 668: Dimensions
Technical Data 10.20 Dimensions Housing for Panel Flush Mounting or Cubicle Installation (Size x 19”) 29 30 (1.14) (1.18) 172 (6.77) 172 (6.77) 29.5 29.5 150 (5.91) (1.16) (1.34) (1.16) Mounting plate Mounting plate 145 (5.71) (0.08) (0.08) (1.34) Rear View Side View (with screwed terminals) Side View (with plug-in terminals) + 0.07)
Page 669 Technical Data Housing for Panel Flush Mounting or Cubicle Installation (Size x 19”) 29 30 225 (8.86) (1.14) (1.18) 29.5 172 (6.77) 29.5 172 (6.77) 220 (8.66) (1.16) (1.34) (1.16) Mounting plate Mounting plate (0.08) (0.08) (1.34) Side view (with screwed terminals) Side view (with plug-in terminals) Rear view +0.08...
Page 670 Technical Data Housing for Panel Flush Mounting or Cubicle Installation (Size x 19”) 29 30 (1.14) (1.18) 172 (6.77) 29.5 172 (6.77) 29.5 (1.16) (1.34) (1.16) Mounting plate Mounting plate (0.08) (0.08) (1.34) Side view (with plug-in terminals) Side view (with screwed terminals) 450 (17.72) +0.08 (17.56...
Page 671 Technical Data Housing for Panel Surface Mounting (Size x 19”) 165 (6.50) 10.5 (0.41) 144 (5.76) 260 (10.24) 29.5 (1.16) 150 (5.91) 72(2.83) 52 (2.05) (0.35) 71 (2.80) Dimensions in mm (0.98) Values in brackets in inches Front view Side view Figure 10-10 Dimensions 7SA6 for panel surface mounting (size x 19”)
Page 672 Technical Data Housing for Panel Surface Mounting (Size 465 (18.31) 260 (10.24) 10.5 444 (17.48) 29.5 (0.41) (1.16) 450 (17.72) (2.83) 2.05) (2.80) (0.35) Side view Front view Dimensions in mm Values in brackets in inches Figure 10-12 Dimensions 7SA6 for panel surface mounting (size x 19”) 10-44 7SA6 Manual...
Page 673 Technical Data Housing for Mounting with Detached Operator Panel (Size x 19”) (1.14) (1.18) 225 (8.86) Mounting plate Mounting plate 220 (8.66) 209.5 (8.25) 34 (1.34) 209.5 (8.25) (1.34) Side view (with screw terminals) Side view (with plug-in terminals) Side view 4.5 (0.18) Dimensions in mm Values in brackets in inches...
Page 674 Technical Data Housing for Mounting with Detached Operator Panel (Size x 19”) (1.18) (1.14) Mounting Plate Mounting Plate 209.5 ( 8.25) 209.5 (8.25) 34 (1.34) 34 (1.34) Side View (with Screw Terminals) Side View (with Screw Terminals) 450 (17.72) 445 (17.52) 4.5 (0.18) Rear View 6.4 (0.25)
Page 675 Technical Data Detached Operator Panel (1.16) (1.06) 68-pin Connection Cable Mounting Plate to Device 29.5 27 Length 2.2 m (0.09) 225 (8.86) 220 (8.66) 2 (0.08) Side View Rear View + 0.08 (8.70 5 (0.20) or M4 6 (0.24) ± 0.5 ±...
Page 676 Technical Data 10-48 7SA6 Manual C53000-G1176-C133-1...
Page 677: Appendix
Appendix This appendix is primarily a reference for the experienced user. This Chapter provides ordering information for the models of 7SA6. General diagrams indicating the terminal connections of the 7SA6 models are included. Connection examples show the proper connections of the device to primary equipment in typical power system configurations.
Page 678: Ordering Information And Accessories
Appendix Ordering Information and Accessories 9 10 11 12 15 16 Digital Distance Protection (position 1 to 9) 7SA6 Version Distance Protection with 4-line display) Type of Device Distance Protection, medium voltage / high voltage, housing size x 19“ Measured Current Inputs (4 x U, 4 x I) Iph = 1 A, Ie = 1 A (min.
Page 679 Appendix 9 10 11 12 15 16 Digital Distance Protection (position 1 to 9) 7SA6 Version Distance Protection with 4-line display Distance Protection with graphic display and control keys (integrated) Type of Device Distance Protection, medium voltage / high voltage, housing size x 19“...
Page 680 Appendix 9 10 11 12 15 16 Digital Distance Protection (position 1 to 9) 7SA6 Version Distance Protection with 4-line display) Distance Protection with graphic display and control keys (integrated) Type of Device Distance Protection, medium voltage / high voltage, housing size x 19“...
Page 681 Appendix 9 10 11 12 15 16 Digital Distance Protection (positon 1 to 9) 7SA6 Version Distance Protection with graphic display and detached operator panel Type of Device Distance Protection, medium voltage / high voltage, housing size x 19“ Measured Current Inputs (4 x U, 4 x I) Iph = 1 A, Ie = 1 A (min.
Page 682 Appendix 9 10 11 12 15 16 Digital Distance Protection (position 1 to 9) 7SA6 Version Distance Protection with graphic display and detached operator panel Type of Device Distance Protection, medium voltage / high voltage, housing size x 19“ Measured Current Inputs (4 x U, 4 x I) Iph = 1 A, Ie = 1 A (min.
Page 683 Appendix 9 10 11 12 15 16 Distance Protection (position 10 to 12) 7SA6 Region-Specific Default/Language Settings and Function Versions Region GE, language German (language can be changed) Region world, language English (GB) (language can be changed) Region US, language English (USA) (language can be changed) Region world, language German (language cannot be changed) Region world, 50/60 Hz, IEC/ANSI, language English (GB) (language cannot be changed) Region US, 60 Hz, ANSI, language English (USA) (language cannot be changed)
Page 684 Appendix 9 10 11 12 15 16 Digital Distance Protection (positon 13 to 16) 7SA6 Functions 1 Only three-pole tripping without overload protection without BCD-output fault location Only three-pole tripping without overload protection with BCD-output fault location Only three-pole tripping with overload protection without BCD-output fault location Only three-pole tripping...
Page 685: Accessories
Appendix A.1.1 Accessories Circuit-Breaker for Voltage Nominal Values Order No. Transformers Thermal 1.6 A; magnetic 6 A 3RV1611-1AG14 Interface Modules Exchange Modules for Interfaces Name Order No. RS232 C53207-A322-D631-1 RS485 C53207-A322-D632-1 LWL 820 nm C53207-A322-D633-1 Profibus FMS RS485 C53207-A322-D601-1 Profibus FMS Doppelring C53207-A322-D602-1 Profibus FMS Einfachring C53207-A322-D603-1...
Page 686 Appendix Interface Cable An interface cable is necessary for communication between the SIPROTEC device and a PC. Requirements for the computer are Windows 95 or Windows NT4 and the ® operating software DIGSI Interface Cable between PC or SIPROTEC device Order No.
Page 687: General Diagrams
Appendix General Diagrams A.2.1 Panel Flush Mounting or Cubicle Mounting 7SA610∗–∗A/J Live status contact Power supply Analog Output Sevice Interface System Interface or Analog Output Time Synchronisation Front Serial Interference Suppression Operating Interface Capacitors at the Relay Contacts, Earthing at the Ceramic, 4,7 nF, 250 V Rear Wall ∗...
Page 688 Appendix 7SA610∗–∗B/K Live Status Contact Power Supply Analog Output Sevice Interface System Interface or Analog Output Time Synchronisation Front Serial Interference Suppression Operating Interface Capacitors at the Relay Contacts, Earthing at the Ceramic, 4,7 nF, 250 V Rear Wall ∗ ∗...
Page 689 Appendix 7SA6∗1∗–∗A/J (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BI12 BI13 Live status contact Power supply Analog Output Sevice Interface System Interface or Analog Output Time Synchronisation Front Serial Interference Suppression Operating Interface Capacitors at the relay contacts,...
Page 690 Appendix 7SA6∗1∗–∗B/K J1 (–) J2 (+) BO10 BO11 BO12 Live status contact BI10 BI11 BI12 Power BI13 supply BI14 BI15 Analog Output BI16 BI17 BI18 BI19 Sevice Interface BI20 System Interface or Analog Output Time Synchronisation Interference Suppression Front Serial capacitors at the Operating Interface relay contacts,...
Page 691 Appendix 7SA6∗2∗–∗A/J (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BO17 BI12 BO18 BO19 BI13 BO20 BI14 BO21 BI15 BO22 BI16 BI17 BO23 BI18 BO24 BI19 Live status BI20 contact BI21 Power supply Analog Output Sevice Interface...
Page 692 Appendix 7SA6∗2∗–∗B/K (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BO17 BI12 BO18 BI13 BO19 BO20 BI14 BO21 BI15 BO22 BI16 BI17 BO23 BI18 BO24 BI19 BI20 BO25 BI21 BO26 BO27 BI22 BO28 BI23 BO29...
Page 693 Appendix Analog Output Sevice Interface System Interface or Analog Output Time Synchronisation Interference Suppression Front Serial Capacitors at the Operating Interface relay contacts, Earthing at the Ceramic, 4,7 nF, 250 V Rear Wall ∗ ∗ ∗ − Figure A-6 General Diagram 7SA6 B/K (panel flush mounted or cubicle mounted) A-17 7SA6 Manual...
Page 694 Appendix 7SA6∗2∗–∗C/L J1 (–) J2 (+) BO10 BO11 BO12 N1 (–) N2 (+) BO13 BI10 BO14 BI11 BO15 BI12 BI13 BO16 BI14 BI15 BO17 BO18 BI16 BI17 BI18 BO19 BI19 BI20 Live status BI21 contact BI22 BI23 BI24 Power BI25 supply BI26 BI27...
Page 695: Panel Surface Mounting
Appendix A.2.2 Panel Surface Mounting 7SA610∗–∗E Live status contact Power supply Earthing Terminal (16) IN SYNC IN 12 V COM SYNC Time COMMON Synchronisation IN 5 V IN 24 V Screen Analog Output Sevice Interface System Interface or Analog Output Interference Suppression Capacitors at the Front Serial...
Page 696 Appendix 7SA610∗–∗F Live status contact Power supply Earthing Terminal (16) IN SYNC IN 12 V COM SYNC TimeTime COMMON Synchronisation IN 5 V IN 24 V Screen Analog Output Sevice Interface System Interface or Analog Output Interference Suppression Front Serial Capacitors at the Operating Interface relay contacts,...
Page 697 Appendix 7SA6∗1∗–∗E (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 Live status contact BI12 BI13 Power supply Earthing Terminal (26) IN SYNC IN 12 V COM SYNC Time COMMON Synchronisation IN 5 V IN 24 V Screen Analog Output...
Page 698 Appendix 7SA6∗1∗–∗F 12 (–) 37 (+) BO10 BO11 BO12 Live status contact BI10 BI11 BI12 Power BI13 supply BI14 BI15 EarthingTerminal BI16 Terminal (26) BI17 BI18 BI19 IN SYNC IN 12 V BI20 COM SYNC Time COMMON Synchronisation IN 5 V IN 24 V Screen Analog Output...
Page 699 Appendix 7SA6∗2∗–∗E (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BO17 BI12 BO18 BI13 BO19 BO20 BI14 BO21 BI15 BO22 BI16 BI17 BO23 BI18 BO24 BI19 Live status BI20 contact BI21 Power supply continued next page continued next page...
Page 700 Appendix EarthingEarthing Terminal (51) IN SYNC IN 12 V COM SYNC Time COMMON Synchronisation IN 5 V IN 24 V Screen Analog Output Sevice Interface System Interface or Analog Output Interference Suppression Front Serial Capacitors at the Operating Interface relay contacts, Earthing at the Ceramic, 4,7 nF, 250 V Side Wall...
Page 701 Appendix 7SA6∗2∗–∗F (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BO17 BI12 BO18 BI13 BO19 BO20 BI14 BO21 BI15 BO22 BI16 BI17 BO23 BI18 BO24 BI19 BI20 BO25 BI21 BO26 BO27 BI22 BO28 BI23 BO29...
Page 702 Appendix Earthing Terminal (51) IN SYNC IN 12 V COM SYNC Time COMMON Synchronisation IN 5 V IN 24 V Screen Analog Output Sevice Interface System Interface or Analog Output Interference Suppression Capacitors at the Front Serial Operating Interface relay contacts, Ceramic, 4,7 nF, 250 V Earthing at the Side Wall...
Page 703 Appendix 7SA6∗2∗–∗G 19 (–) 69 (+) BO10 BO11 BO12 34 (–) 84 (+) BO13 BI10 BO14 BI11 BO15 BI12 BI13 BO16 BI14 BI15 BO17 BO18 BI16 BI17 BI18 BO19 BI19 Live status BI20 contact BI21 Power BI22 supply BI23 BI24 Earthing BI25 Terminal (51)
Page 704 Appendix A.2.3 Housing for Mounting with Detached Operator Panel 7SA641∗–∗A/J (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BI12 BI13 Live status contact Power supply Analog Output Sevice Interface System Interface or Analog Output Time Synchronisation Earthing at the Interference Suppression...
Page 705 Appendix 7SA641∗–∗B/K J1 (–) J2 (+) BO10 BO11 BO12 Live status contact BI10 BI11 Power BI12 supply BI13 BI14 BI15 Analog Output BI16 BI17 BI18 Sevice Interface BI19 BI20 System Interface or Analog Output Time Synchronisation Interference Suppression Earthing at the Capacitors at the Rear Wall relay contacts,...
Page 706 Appendix 7SA642∗–∗A/J (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BO17 BI12 BO18 BO19 BI13 BO20 BI14 BO21 BI15 BO22 BI16 BI17 BO23 BI18 BO24 BI19 Live status BI20 contact BI21 Power supply Analog Output Sevice Interface...
Page 707 Appendix 7SA642∗–∗B/K (fast) BO10 (fast) BO11 (fast) BO12 (fast) BO13 (fast) BO14 (fast) BO15 BI10 (fast) BO16 BI11 BO17 BI12 BO18 BI13 BO19 BO20 BI14 BO21 BI15 BO22 BI16 BI17 BO23 BI18 BO24 BI19 BO25 BI20 BI21 BO26 BO27 BI22 BO28 BI23 BO29...
Page 708 Appendix Analog Output Sevice Interface System Interface or Analog Output Time Synchronisation Earthing at the Interference Suppression Rear Wall Capacitors at the relay contacts, Ceramic, 4,7 nF, 250 V Operator Earthing at the Front Serial Operating Interface Panel Rear Wall ∗...
Page 709 Appendix 7SA642∗–∗C/L J1 (–) J2 (+) BO10 BO11 BO12 N1 (–) N2 (+) BO13 BI10 BO14 BI11 BI12 BO15 BI13 BO16 BI14 BI15 BO17 BO18 BI16 BI17 BI18 BO19 BI19 BI20 Live status BI21 contact BI22 BI23 BI24 Power BI25 supply BI26 BI27...
Page 710: Connection Examples
Appendix Connection Examples Current Transformer Connection Examples Panel surface mounted Flush mounted/cubicle 7SA6 Housing size Panel surface mounted Flush mounted/cubicle (50) 25 50 (100) (49) 24 49 (99) (48) 23 48 (98) (47) 22 47 (97) 7SA6 Housing size (figures in brackets relating to size Figure A-20 Current connections to three current transformers with a star-point connection for earth current (residual , neutral current), normal circuit layout —...
Page 711 Appendix Panel surface mounted Flush mounted/cubicle 7SA6 Important! Cable shield grounding must be done on the cable side! Note: Change of Address 0201 setting changes polarity of 3I Current Input, i.e. terminal Q7 must be connected to that CT terminal pointing in the same direction as the starpoint of the phase current CTs (towards “Line side”...
Page 712 Appendix Panel surface mounted Panel surface mounted Flush mounted/cubicle Flush mounted/cubicle 7SA6 7SA6 Line 1 Line 2 Housing size Panel surface mounted Panel surface mounted Flush mounted/cubicle Flush mounted/cubicle (50) 25 50 (100) (50) 25 50 (100) (49) 24 49 (99) (49) 24 49 (99) (48) 23...
Page 713 Appendix Panel surface mounted Flush mounted/cubicle 7SA6 Transformer Line Housing size Panel surface mounted Flush mounted/cubicle (50) 25 50 (100) (49) 24 49 (99) (48) 23 48 (98) (97) 47 22 (47) 7SA6 Transformer LineTransformer Housing size (figures in brackets relating to size Figure A-23 Current connections to three current transformers and earth current from the star-point connection of an earthed power transformer (for directional-controlled earth fault protection)
Page 714 Appendix Voltage Transformer Connection Examples Panel surface mounted Flush mounted/cubicle 7SA6 Housing size Panel surface mounted Flush mounted/cubicle (45) 20 (44) 19 (94) 44 (95) 45 7SA6 Housing size (figures in brackets relating to size Figure A-24 Voltage connections to three Wye-connected voltage transformers (normal circuit layout) A-38 7SA6 Manual...
Page 715 Appendix Panel surface mounted Flush mounted/cubicle 7SA6 Housing size Panel surface mounted Flush mounted/cubicle (45) 20 (44) 19 (94) 44 (95) 45 (46) 21 (96) 46 7SA6 Housing size (figures in brackets relating to size Figure A-25 Voltage connections to three Wye-connected voltage transformers with additional open-delta windings (e–n–winding) A-39 7SA6 Manual...
Page 716 Appendix Panel surface mounted Flush mounted/cubicle 7SA6 Housing size Panel surface mounted Flush mounted/cubicle (45) 20 (44) 19 (94) 44 (95) 45 (46) 21 (96) 46 7SA6 Housing size (figures in brackets relating to size Figure A-26 Voltage connections to three Wye-connected voltage transformers with additional open-delta windings (e–n–winding) from the busbar A-40 7SA6 Manual...
Page 717 Appendix (any voltage) Panel surface mounted Flush mounted/cubicle 7SA6 Housing size (any voltage) Panel surface mounted Flush mounted/cubicle (45) 20 (44) 19 (94) 44 (95) 45 (46) 21 (96) 46 7SA6 Housing size (figures in brackets relating to size Figure A-27 Voltage connections to three Wye-connected voltage transformers and additionally to any phase-to-phase voltage (for overvoltage protection and/or synchronism check)
Page 718: Preset Configurations
Appendix Preset Configurations Presettings The LED indication presettings which are preset in the device when it leaves the factory are summarised in Table A-1. Please take into consideration that LED8 to LED14 is not available in 7SA610. The presettings of the binary inputs are listed (dependent on the ordering variant) in Tables A-2 to A-4.
Page 719 Appendix Table A-1 LED indication presettings LCD Text Function No. Remarks LED12 AR not ready 2784 Automatic reclosure not ready at present, unlatched LED13 >Door open — High voltage system, door open or >CB wait CB waiting for spring charged, un- latched LED14 Alarm Sum Event...
Page 720 Appendix Table A-4 Further binary input presettings for7SA6*1 and 7SA6*2 Binary Input LCD Text Function No. Remarks >TripC1 TripRel 6854 Trip Circuit Supervision (TripCirc.Su- perv), Circuit 1, H–active >CB 3p Open Circuit breaker position 3pole Open, >CB1 3p Open H–active Breaker (open) —...
Page 721 Appendix Table A-7 Further binary output presettings 7SA610*–*B/F/K Binary LCD Text Function Remarks Output AR CLOSE Cmd. 2851 Automatic reclosure close command Table A-8 Further binary output presettings 7SA6*1–*A/E/J and 7SA6*2–*A/E/J/B/F/K Binary LCD Text Function Remarks Output Relay TRIP 0511 Device (general) trip command BO10 Dis.T.SEND...
Page 722 Appendix Table A-9 Further binary output presettings 7SA6*1*–*B/F/K and 7SA6*2*–*C/G/L Binary LCD Text Function Remarks Output BO10 — — no presetting Relay TRIP 1pL1 0512 Device (general) trip command for Relay TRIP 3ph. 0515 breaker pole L1 BO11 — — no presetting Relay TRIP 1pL2 0513...
Page 723: Protocol Dependent Functions
Appendix Protocol Dependent Functions → Protocol IEC 60870–5–103 Profibus FMS Additional Service Function ↓ Interface (optional) Operational Measured Values Metering Values Fault Recording Protective Setting from No. Only via Additional Remote Service Interface User-defined Alarms and Switching Objects Time Sychronism Via Protocol;...
Page 724 Appendix A-48 7SA6 Manual C53000-G1176-C133-1...
Page 725: Appendix
Appendix This appendix is primarily a reference for the experienced user. Tables with all settings and all information available in a 7SA6 equipped with all options are provided. Settings List of Information B-22 Measured Values B-57 7SA6 Manual C53000-G1176-C133-1...
Page 726 Appendix Settings Please see " Note " for settings right at the end of Section B.1 Addr. Setting Title Function Setting Options Default Setting Comments Grp Chge OPTION Scope of Functions Disabled Disabled Setting Group Change Option Enabled Trip mode Scope of Functions 3pole only 3pole only Trip mode...
Page 727 Appendix Addr. Setting Title Function Setting Options Default Setting Comments Fault Locator Scope of Functions Disabled Enabled Fault Locator Enabled with BCD-output BREAKER FAIL- Scope of Functions Disabled Disabled Breaker Failure Protection Enabled TripCirc.Superv Scope of Functions Disabled Disabled Trip Circuit Supervision 1 trip circuit 2 trip circuits 3 trip circuits...
Page 728 Appendix Addr. Setting Title Function Setting Options Default Setting Comments Usync connect. Power System Data L1-E L1-L2 VT connection for sync. voltage L2-E L3-E L1-L2 L2-L3 L3-L1 ϕ Usync-Uline 0..360 ° 0 ° 214 A Power System Data Angle adjustment Usync-Uline U-line / Usync Power System Data 0.80..1.20...
Page 729 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 1103 FullScaleVolt. Power System Data 1.0..1200.0 kV 400.0 kV Measurement: Full Scale Voltage (100%) 1104 FullScaleCurr. Power System Data 10..5000 A 1000 A Measurement: Full Scale Current (100%) 30..89 ° 85 °...
Page 730 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 1151 SYN.MAN.CL Power System Data with Synchronism-check without Synchronism-check Manual CLOSE COMMAND genera- without Synchronism-check tion 1155 3pole coupling Power System Data with Pickup with Trip 3 pole coupling with Trip 1156A Trip2phFlt Power System Data...
Page 731 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 1301 Op. mode Z1 Distance zones Forward Forward Operating mode Z1 (quadrilateral) Reverse Non-Directional Inactive 1302 R(Z1) Ø-Ø Distance zones 0.05..250.00 Ohm 1.25 Ohm R(Z1), Resistance for ph-ph-faults (quadrilateral) 1303 X(Z1) Distance zones 0.05..250.00 Ohm...
Page 732 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 1331 Op. mode Z4 Distance zones Forward Non-Directional Operating mode Z4 (quadrilateral) Reverse Non-Directional Inactive 1332 R(Z4) Ø-Ø Distance zones 0.05..250.00 Ohm 12.00 Ohm R(Z4), Resistance for ph-ph-faults (quadrilateral) 1333 X(Z4) Distance zones 0.05..250.00 Ohm...
Page 733 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 0.00..30.00 sec; ∞ 1602 DELAY FORW. PU Distance protec- 1.20 sec Trip delay for Forward-PICKUP tion, general set- tings 0.00..30.00 sec; ∞ 1603 DELAY NON-DIR Distance protec- 1.20 sec Trip delay for Reverse/Non-direc. tion, general set- PICKUP tings...
Page 734 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 0.00..30.00 sec; ∞ 2109A TrBlk Wait Time Teleprotection for 0.04 sec Transient Block.: Duration external flt. Distance prot. 2110A TrBlk BlockTime Teleprotection for 0.00..30.00 sec 0.05 sec Transient Block.: Blk.T. after ext. flt. Distance prot.
Page 735 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 2646 T Ip Add Backup overcurrent 0.00..30.00 sec 0.00 sec T Ip Additional Time Delay Backup overcurrent 0.05..4.00 A; ∞ ∞ A 2650 3I0p PICKUP 3I0p Pickup Backup overcurrent 0.05..3.00 sec; ∞ 2652 T 3I0p TimeDial 0.50 sec...
Page 736 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 2913A FFM U<max (3ph) Measurement 2..100 V Maximum Voltage Threshold U< Supervision (3phase) 2914A FFM Idelta (3p) Measurement 0.05..1.00 A 0.10 A Delta Current Threshold (3phase) Supervision 2921 T mcb Measurement 0..30 ms 0 ms...
Page 737 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 3111 3I0>>> Earth fault overcur- 0.50..25.00 A 4.00 A 3I0>>> Pickup rent 0.00..30.00 sec; ∞ 3112 T 3I0>>> Earth fault overcur- 0.30 sec T 3I0>>> Time delay rent 3113 3I0>>> Telep/BI Earth fault overcur- Instantaneous trip via Teleprot./BI rent...
Page 738 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 0.00..30.00 sec; ∞ 3147 Add.T-DELAY Earth fault overcur- 1.20 sec Additional Time Delay rent 3148 3I0p Telep/BI Earth fault overcur- Instantaneous trip via Teleprot./BI rent 3149 3I0p SOTF-Trip Earth fault overcur- Instantaneous trip after SwitchOnTo- rent Fault...
Page 739 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 3202 Line Config. Teleprotection for Two Terminals Two Terminals Line Configuration Earth fault overcurr. Three Terminals 3203A Send Prolong. Teleprotection for 0.00..30.00 sec 0.05 sec Time for send signal prolongation Earth fault overcurr.
Page 740 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 3437 ADT SynRequest Automatic Reclo- Request for synchro-check after 3pole sure 3438 T U-stable Automatic Reclo- 0.10..30.00 sec 0.10 sec Supervision time for dead/ live voltage sure 3440 U-live> Automatic Reclo- 30..90 V 48 V Voltage threshold for live line or bus...
Page 741 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 0.01..1800.00 sec; ∞ 3477 3.AR Tdead 3Flt Automatic Reclo- 0.50 sec Dead time after 3phase faults sure 0.01..1800.00 sec; ∞ ∞ sec 3478 3.AR Tdead1Trip Automatic Reclo- Dead time after 1pole trip sure 0.01..1800.00 sec;...
Page 742 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 3516 Usync> U-line< Synchronism and Live bus / dead line check before AR Voltage Check 3517 Usync< U-line> Synchronism and Dead bus / live line check before AR Voltage Check 3518 Usync<...
Page 743 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 3731 U1>(>) Voltage Protection Operating mode U1 overvoltage prot. Alarm Only 3732 U1> Voltage Protection 2.0..220.0 V 150.0 V U1> Pickup 0.00..30.00 sec; ∞ 3733 T U1> Voltage Protection 2.00 sec T U1>...
Page 744 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 3901 FCT BreakerFail Breaker Failure Breaker Failure Protection is 3902 I> BF Breaker Failure 0.05..20.00 A 0.10 A Pick-up threshold I> 3903 1p-RETRIP (T1) Breaker Failure 1pole retrip with stage T1 (local trip) 0.00..30.00 sec;...
Page 745 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 5017 NEG VALUE (B2) AnalogOutputs 19.00..22.50 mA 19.84 mA Output value (B2) for negative values 5018 OVERFLOW (B2) AnalogOutputs 19.00..22.50 mA 22.50 mA Output value (B2) for overflow 0.10..30.00 sec; ∞ 5019 Tmax OUTPUT(B2) AnalogOutputs 5.00 sec...
Page 746: List Of Information
Appendix List of Information F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information >Synchronize Internal Real Time Device LED BI Clock (>Time Synch) >Trigger Waveform Capture Oscillographic LED BI (>Trig.Wave.Cap.) Fault Records >Reset LED (>Reset LED) Device LED BI >Setting Group Select Bit 0 (>Set Change Group...
Page 747 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information Error with a summary alarm (Error Device 128 47 Sum Alarm) Error 5V (Error 5V) Device 135 164 1 Alarm Summary Event (Alarm Sum Device 128 46 Event) Failure: General Current Supervision Measurement...
Page 748 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information Alarm: NO calibration data available Device 135 181 1 (Alarm NO calibr) Error: Neutral CT different from Device 135 180 1 MLFB (Error neutralCT) Failure: Broken Conductor (Fail Con- Measurement 135 195 1 ductor)
Page 749 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information >CB1 READY (for AR,CB-Test) Power System LED BI 150 71 (>CB1 Ready) Data 2 >CB faulty (>CB faulty) Power System LED BI Data 2 >CB aux. contact 3pole Closed (>CB Power System LED BI 150 78...
Page 750 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information >CB1 aux. 3p Open (for AR, CB- Power System LED BI 150 81 Test) (>CB1 3p Open) Data 2 Relay PICKUP (Relay PICKUP) Power System 128 84 Data 2 Relay PICKUP Phase L1 (Relay Power System...
Page 751 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information CB CLOSE command for manual Power System 150 212 1 closing (Man.Close Cmd) Data 2 CB alarm suppressed (CB Alarm Power System Supp) Data 2 I L1 (IL1 =) Measurement I L2 (IL2 =) Measurement...
Page 752 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information Frequency (difference line-bus) (F- Measurement diff=) Angle (difference line-bus) (ϕ-diff=) Measurement Frequency (line) (F-line=) Measurement Active 3I0 sen (sensitive Ie) Measurement 134 124 9 (3I0 sen A) Reactive 3I0 sen (sensitive Ie) Measurement 134 124 9...
Page 753 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information I L3 Demand Maximum I1 (positive sequence) Demand Mini- I1 (positive sequence) Demand Max- imum Active Power Demand Minimum Active Power Demand Maximum Reactive Power Demand Minimum Reactive Power Demand Maximum MVT Apparent Power Demand Minimum Apparent Power Demand Maximum MVT...
Page 754 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information Frequency Maximum 1040 Active Power Minimum Forward 1041 Active Power Maximum Forward 1042 Active Power Minimum Reverse 1043 Active Power Maximum Reverse 1044 Reactive Power Minimum Forward 1045 Reactive Power Maximum Forward 1046...
Page 755 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 1118 Flt Locator: secondary REAC- Fault Locator 151 18 TANCE (Xsec =) 1119 Flt Locator: Distance to fault (dist =) Fault Locator 151 19 1120 Flt Locator: Distance [%] to fault Fault Locator 151 20 (d[%] =)
Page 756 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 1220 Reactive 3I0sen (sensitive Ie) = Sensitive Earth (3I0senR=) Flt.(comp/ isol. starp.) 1251 >Switch on sensitive E/F detection Sensitive Earth LED BI (>SensEF on) Flt.(comp/ isol. starp.) 1252 >Switch off sensitive E/F detection Sensitive Earth...
Page 757 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 1307 >Earth Fault O/C Block 3I0>> (>EF Earth fault over- LED BI 166 7 BLOCK 3I0>>) current 1308 >Earth Fault O/C Block 3I0> (>EF Earth fault over- LED BI 166 8 BLOCK 3I0>)
Page 758 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 1356 E/F 3I0> PICKED UP (EF 3I0> Earth fault over- Pikkup) current 1357 E/F 3I0p PICKED UP (EF 3I0p Earth fault over- Pikkup) current 1358 E/F picked up FORWARD (EF for- Earth fault over- 166 58 ward)
Page 759 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 1415 >BF: External start 3pole (>BF Start Breaker Failure LED BI 3pole) 1432 >BF: External release (>BF release) Breaker Failure LED BI 1435 >BF: External start L1 (>BF Start L1) Breaker Failure LED BI 1436 >BF: External start L2 (>BF Start L2) Breaker Failure...
Page 760 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 1511 Thermal Overload Protection OFF Thermal Overload OUT 167 11 (Th.Overload OFF) 1512 Thermal Overload Protection Thermal Overload OUT 167 12 BLOKKED (Th.Overload BLK) 1513 Thermal Overload Protection Thermal Overload OUT 167 13 ACTIVE (Th.O/L ACTIVE)
Page 761 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 2742 >AR: Block 1st AR-cycle (>BLK Automatic Reclo- LED BI 1.AR-cycle) sure 2743 >AR: Block 2nd AR-cycle (>BLK Automatic Reclo- LED BI 2.AR-cycle) sure 2744 >AR: Block 3rd AR-cycle (>BLK Automatic Reclo- LED BI 3.AR-cycle)
Page 762 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 2839 AR dead time after 1pole trip running Automatic Reclo- 148 2 (AR Tdead 1pTrip) sure 2840 AR dead time after 3pole trip running Automatic Reclo- 149 2 (AR Tdead 3pTrip) sure 2841...
Page 763 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 2894 AR Remote close signal send (AR Automatic Reclo- 129 1 Remote Close) sure 2895 No. of 1st AR-cycle CLOSE com- Statistics mands,1pole (AR #Close1./1p=) 2896 No. of 1st AR-cycle CLOSE com- Statistics mands,3pole (AR #Close1./3p=) 2897...
Page 764 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 2946 Sync. dead bus / dead line detected Synchronism and (Usyn< U-line<) Voltage Check 2947 Sync. Voltage diff. greater than limit Synchronism and (Sync. Udiff>) Voltage Check 2948 Sync.
Page 765 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 3653 Distance is ACTIVE (Dist. ACTIVE) Distance protec- tion, general set- tings 3654 Setting error K0(Z1) or Angle K0(Z1) Distance protec- (Dis.ErrorK0(Z1)) tion, general set- tings 3655 Setting error K0(>Z1) or Angle Distance protec- K0(>Z1) (DisErrorK0(>Z1))
Page 766 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 3690 Distance Pickup L31E (Dis.Pickup Distance protec- L31E) tion, general set- tings 3691 Distance Pickup L23 (Dis.Pickup Distance protec- L23) tion, general set- tings 3692 Distance Pickup L23E (Dis.Pickup Distance protec- L23E) tion, general set-...
Page 767 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 3710 Distance Loop L12 selected reverse Distance protec- (Dis.Loop L1-2 r) tion, general set- tings 3711 Distance Loop L23 selected reverse Distance protec- (Dis.Loop L2-3 r) tion, general set- tings 3712 Distance Loop L31 selected reverse...
Page 768 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 3747 Distance Pickup Z1B, Loop L1E Distance protec- (Dis. Z1B L1E) tion, general set- tings 3748 Distance Pickup Z1B, Loop L2E Distance protec- (Dis. Z1B L2E) tion, general set- tings 3749 Distance Pickup Z1B, Loop L3E...
Page 769 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 3782 DistanceTime Out Reverse/Non-dir. Distance protec- 161 2 PICKUP (Dis.TimeOut Trv) tion, general set- tings 3801 Distance protection: General trip Distance protec- 201 2 (Dis.Gen. Trip) tion, general set- tings 3802 Distance TRIP command - Only...
Page 770 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 3825 DisTRIP 3phase in Z1B with single- Distance protec- 244 2 ph Flt (DisTRIP3p.Z1Bsf) tion, general set- tings 3826 DisTRIP 3phase in Z1B with multi-ph Distance protec- 245 2 Flt.
Page 771 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 4054 Dis. Telep. Carrier signal received Teleprotection for 128 77 (Dis.T.Carr.rec.) Distance prot. 4055 Dis. Telep. Carrier CHANNEL FAIL- Teleprotection for 128 39 URE (Dis.T.Carr.Fail) Distance prot. 4056 Dis.
Page 772 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 4232 Weak Infeed Trip function PICKUP Weak Infeed (Trip L1 (W/I Pickup L1) and/or Echo) 4233 Weak Infeed Trip function PICKUP Weak Infeed (Trip L2 (W/I Pickup L2) and/or Echo) 4234 Weak Infeed Trip function PICKUP...
Page 773 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 4414 >Direct Transfer Trip INPUT Phase DTT Direct Trans- LED BI L3 (>DTT Trip L3) fer Trip 4417 >Direct Transfer Trip INPUT 3ph DTT Direct Trans- LED BI L123 (>DTT Trip L123) fer Trip 4421...
Page 774 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 7131 >Enable I-STUB-Bus function (>I- Backup overcur- LED BI STUB ENABLE) rent 7151 Backup O/C is switched OFF (O/C Backup overcur- OFF) rent 7152 Backup O/C is BLOCKED (O/C Backup overcur- BLOCK) rent...
Page 775 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 7191 Backup O/C Pickup I>> (O/C Backup overcur- PICKUP I>>) rent 7192 Backup O/C Pickup I> (O/C PICKUP Backup overcur- I>) rent 7193 Backup O/C Pickup Ip (O/C PICKUP Backup overcur- rent 7201...
Page 776 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 7350 CB-TEST was succesful (CB-TST Testing OUT_Ev .OK.) 10201 >BLOCK Uph-e>(>) Overvolt. Voltage Protection SP LED BI (phase-earth) (>Uph-e>(>) BLK) 10202 >BLOCK Uph-ph>(>) Overvolt Voltage Protection SP LED BI (phase-phase) (>Uph-ph>(>) BLK) 10203 >BLOCK 3U0>(>) Overvolt.
Page 777 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 10230 U1<(<) Undervolt. is BLOCKED Voltage Protection OUT (U1<(<) BLK) 10231 Over-/Under-Voltage protection is Voltage Protection OUT ACTIVE (U</> ACTIVE) 10240 Uph-e> Pickup (Uph-e> Pickup) Voltage Protection OUT 10241 Uph-e>>...
Page 778 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 10282 U1> TimeOut (U1> TimeOut) Voltage Protection OUT 10283 U1>> TimeOut (U1>> TimeOut) Voltage Protection OUT 10284 U1>(>) TRIP command (U1>(>) Voltage Protection OUT TRIP) 10290 U2> Pickup (U2> Pickup) Voltage Protection OUT 10291 U2>>...
Page 779 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information 10331 Uphph<< TimeOut (Uphph<< Time- Voltage Protection OUT Out) 10332 Uphph<(<) TRIP command Voltage Protection OUT 132 2 (Uphph<(<) TRIP) >Back Light on (>Light on) Device >Cabinet door open (>Door open) Process Data LED BI BO CB...
Page 780 Appendix F.No. Description Function Type of Log-Buffers Configurable in Matrix IEC 60870-5-103 Information Disconnect Switch (Disc.Swit.) Control Device 240 161 1 Earth Switch (EarthSwit) Control Device CF_D2 240 164 1 Earth Switch (EarthSwit) Control Device 240 164 1 Fan ON/OFF (Fan ON/OFF) Control Device CF_D2 240 175 1...
Page 781: Measured Values
Appendix Measured Values Measured Value IEC 60870-5-103 compatible IEC 60870-5-103 extended Type 128 Type 134 Information-No. 148 Information-No. 124 IL1[%] IL1[%] IL2[%] IL2[%] IL3[%] IL3[%] UIL1E[%] UL1E[%] UIL2E[%] UL2E[%] UIL3E[%] UL3E[%] P[%] P[%] Q[%] Q[%] f[%] f[%] UL12[%] UL23[%] UL31[%] COS PHI IE(3I0) IEEw[mA]...
Page 782 Appendix B-58...
Page 783: Index
Index Numerics Breaker Tripping Alarm Suppression . 6-278 Broken Conductor ......6-257 1st Reclosure Cycle ......6-188 Buffer Battery ........6-254 2 Protection Equipments with 2 Automatic Reclosure Functions ............ 6-182 2nd to 4th Reclosure Cycle ....6-189 Calculation of the Impedances 5th to 8th Reclosure Cycles ....
Page 784 Index Command Output and During Operation ......7-1 Switching Relays ......6-301 Control Logic using CFC ....6-300 Commissioning ........8-40 Control Messages ........ 7-57 Common phase initiation ....6-231 Control of Device Functions ....7-30 Communication ......1-6, 4-3 Control of Switchgear ......
Page 785 Index Detection of Line Energization ... 6-269 Earth Fault Protection Determination of Teleprotection Schemes ....6-121 the Fault Location ......6-222 Method of Operation ....6-122 Determination of Functional Scope ..5-2 Earth Fault Recognition ......6-28 DIGSI REMOTE 4 ........ A-10 DIGSI®...
Page 786 Index Function Control ......... 6-269 for Panel Surface Mounting Function Description ......6-168 (Size 1/3 x 19”) ....10-43 Function Keys ........4-23 Housing and Detached Operator Panel 2-34 Functions ..........6-1 Humidity ..........10-10 Further Functions ......... 1-12 Fuse Failure Monitor (Non-Symmetrical Voltages) ..
Page 787 Index Multiple Reclosure ......6-174 Mutual Impedance Matching ....10-12 Keys ............4-7 Negative Sequence Current 3I2 ... 6-29 Light-Emitting Diodes ......7-2 Neutral Displacement Voltage 3 U0 ..6-29 Limit Value / Set Point Monitoring ..6-287 Nominal Currents ......... 8-13 Limit Values ........
Page 788 Index Passwords ........4-8, 4-16 Purpose of Signal Transmission ... 6-75 PC Operating Interface at Front ... 8-36 PC–Interfaces ........7-3 Performing Configuration ..... 5-26 Quantities ..........8-48 Permissive Overreach Transfer Trip (POTT) ..... 6-81 Transfer, Unblocking ..... 8-58 Rack Mounting and Cubicle Mounting ..8-4 Permissive Underreach Rated Frequency ........
Page 789 Index Scope of Functions ........ 1-8 Summation Monitoring ....... 6-264 Supplementary Functions ..6-284, 10-38 Screw Terminal Connections Switching ........2-11, 2-28, 2-36 onto a Dead Fault ......6-146 Selectivity before Reclosure ....6-168 Switching Authority ....... 7-55 Sensitive Earth Fault Switching between Setting Groups ..
Page 790 Index Status ..........7-30 Synchronization ......5-56 Time Delayed Overcurrent Protection ..1-9 Version of 7SA6 Time Settings ......6-98, 6-132 for Panel Flush Mounting Time Synchronization ....1-4, 10-7 (Cubicle Mounting) ....2-2 Time Synchronization Interface ... 8-37 for Panel Surface Mounting ... 2-21 Transfer Trip to the Version of 7SA6 with Remote End Circuit Breaker ..
Page 791 Index Zero Voltage Stage with Inverse Characteristic ....6-112 Zero Voltage Time Protection (U0-Inverse) ........ 6-105 Zone Logic of the Controlled Zone Z1B 6-68 Zone Logic of the Independent Zones Z1 up to Z5 ..6-66 Index-ix 7SA6 Manual C53000-G1176-C133-1...
Page 792 Index Index-x 7SA6 Manual C53000-G1176-C133-1...

Siemens siprotec 7SA6 User Manual

Quick Links

Related Manuals for Siemens siprotec 7SA6

Summary of Contents for Siemens siprotec 7SA6