Page 1 Grid Solutions Line Current Differential System Instruction Manual Product version: 7.6x GE publication code: 1601-9050-AF1 (GEK-131002) E83849 LISTED IND.CONT. EQ. 52TL 1601-9050-AF1...
Page 2 The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.
Page 3: Table Of Contents
Power supply ........................2-36 2.6.7 Outputs............................2-36 2.6.8 Communication protocols....................2-39 2.6.9 Inter-relay communications..................2-40 2.6.10 CyberSentry security......................2-41 2.6.11 Graphical front panel......................2-41 2.6.12 Environmental........................2-42 2.6.13 Type tests ..........................2-43 2.6.14 Production tests ........................2-43 2.6.15 Approvals ..........................2-44 2.6.16 Maintenance.........................2-44 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 4 3.11.2 Event records ........................3-66 3.11.3 Log files........................... 3-66 3.11.4 Setting files..........................3-67 4 INTERFACES EnerVista software interface................4-1 4.1.1 Introduction ..........................4-1 4.1.2 Settings files ..........................4-1 4.1.3 Event viewing..........................4-2 4.1.4 File support ..........................4-3 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 5 User-programmable pushbuttons ................5-125 5.3.15 Flex state parameters ....................5-131 5.3.16 User-definable displays....................5-132 5.3.17 Installation ..........................5-133 Remote resources ....................5-134 5.4.1 Remote resources configuration ................5-134 System setup.......................5-135 5.5.1 AC inputs ..........................5-135 5.5.2 Power system........................5-136 5.5.3 Signal sources........................5-137 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 6 Test mode function ......................5-319 5.11.2 Test mode forcing......................5-319 5.11.3 Phasor Measurement Unit test values..............5-320 5.11.4 Force contact inputs ..................... 5-321 5.11.5 Force contact outputs ....................5-321 5.11.6 Channel tests ........................5-322 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 7 7.1.1 Virtual inputs........................... 7-2 7.1.2 Clear records .......................... 7-2 7.1.3 Set date and time......................... 7-3 7.1.4 Relay maintenance......................7-3 7.1.5 Phasor Measurement Unit one-shot................7-4 7.1.6 Security ............................. 7-6 Targets menu......................7-6 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 8 10.1.19 Differential element characteristics............... 10-15 10.1.20 Relay synchronization....................10-16 10.2 Operating condition characteristics.............. 10-17 10.2.1 Description ......................... 10-17 10.2.2 Trip decision example ....................10-19 10.2.3 Trip decision test ......................10-19 10.3 Fault locator ....................... 10-20 viii L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 9 FlexAnalog items ....................A-1 OPERANDS B RADIUS SERVER RADIUS server configuration ................B-1 CONFIGURATION C COMMAND LINE Command line interface ..................C-1 INTERFACE D MISCELLANEOUS Warranty .........................D-1 Revision history ......................D-1 ABBREVIATIONS INDEX L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 10 TABLE OF CONTENTS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 11: Introduction
Ensure that the control power applied to the device, the alternating current (AC), and voltage input match the ratings specified on the relay nameplate. Do not apply current or voltage in excess of the specified limits. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 12: For Further Assistance
Website: http://www.gegridsolutions.com/multilin When contacting GE by e-mail, optionally include a device information file, which is generated in the EnerVista software by clicking the Service Report button. When using the optional graphical front panel, the report instead can be generated by connecting a USB drive to the front panel.
Page 13 CHAPTER 1: INTRODUCTION FOR FURTHER ASSISTANCE Figure 1-1: Generate service report in EnerVista software L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 14 FOR FURTHER ASSISTANCE CHAPTER 1: INTRODUCTION L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 15: Product Description
This chapter outlines the product, order codes, and specifications. 2.1 Product description The L30 Line Current Differential System is part of the Universal Relay (UR) series of products. It is a digital current differential relay system with an integral communications channel interface.
Page 16: Description
Voltage, current, and power metering is built into the relay as a standard feature. Current parameters are available as total waveform RMS magnitude, or as fundamental frequency only RMS magnitude and angle (phasor). The L30 uses flash memory technology that allows field upgrading as new features are added. Firmware and software are upgradable.
Page 17: Features
VT fuse failure 2.1.1 Features 2.1.1.1 Line current differential • Phase segregated, high-speed digital current differential system • Overhead and underground AC transmission lines, series compensated lines • Two-terminal and three-terminal line applications L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 18 Zero-sequence removal for application on lines with tapped transformers connected in a grounded wye on the line side • GE phaselets approach based on the Discrete Fourier Transform with 64 samples per cycle and transmitting two time- stamped phaselets per cycle •...
Page 19: Pilot Channel Relaying
(DTT) signal to all of the other L30 relays on the protected line. If a slave L30 issues a trip from one of its backup functions, it can send a transfer trip signal to its master and other slave relays if such option is designated.
Page 20 Receives current phasor information from all relays • Performs the current differential algorithm • Sends a current differential DTT signal to all L30 relays on the protected line In the peer-to-peer mode, all L30 relays act as masters. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 21: Channel Monitor
2.2.2 Channel monitor The L30 has logic to detect that the communications channel is deteriorating or has failed completely. This can provide an alarm indication and disable the current differential protection. Note that a failure of the communications from the master to a slave does not prevent the master from performing the current differential algorithm;...
Page 22: Direct Transfer Tripping
The L30 supports password entry from a local or remote connection. Local access is defined as any access to settings or commands via the front panel interface. This includes both keypad entry and the through the front panel RS232 port.
Page 23 |--------------- Supervisory See table notes See table notes |--------------- Display Properties |--------------- Clear Relay Records (settings) |--------------- Communications |--------------- Modbus User Map |--------------- Real Time Clock |--------------- Oscillography |--------------- Data Logger |--------------- Demand L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 24 |---------- Virtual Inputs |---------- Clear Records |---------- Set Date and Time User Displays Targets Actual Values |---------- Front panel labels designer |---------- Status |---------- Metering |---------- Transducer I/O |---------- Records |---------- Product Info 2-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 25: Order Codes
The order code is on the product label and indicates the product options applicable. The L30 is available as a 19-inch rack horizontal mount or reduced-size (¾) vertical unit. It consists of the following modules: power supply, CPU, CT/VT, contact input and output, transducer input and output, and inter-relay communications.
Page 26: Order Codes With Enhanced Ct/Vt Modules
The R-GOOSE protocol described in IEC 61850-8-1 is available through the IEC 61850 software option. R-GOOSE security requires the CyberSentry software option. 2.4.1 Order codes with enhanced CT/VT modules Table 2-4: L30 order codes for horizontal units - * ** - * *...
Page 27 French display with 4 small and 12 large programmable pushbuttons Russian display with 4 small and 12 large programmable pushbuttons Chinese display with 4 small and 12 large programmable pushbuttons Enhanced front panel with English display L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-13...
Page 28 Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, Laser Channel 1 - G.703; Channel 2 - 1300 nm, single-mode Laser G.703, 1 Channel G.703, 2 Channels RS422, 1 Channel RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels 2-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 29 CHAPTER 2: PRODUCT DESCRIPTION ORDER CODES Table 2-5: L30 order codes for reduced-size vertical units - * * * - F ** - H ** - L ** - N ** - R ** Reduced Size Vertical Mount BASE UNIT...
Page 30 C37.94SM, 1300 nm single-mode, ELED, 2 channel single-mode COMMUNICATIONS Bi-phase, single channel (select a maximum of 1 per unit) Bi-phase, dual channel IEEE C37.94, 820 nm, 128 kbps, multimode, LED, 1 Channel 2-16 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 31: Order Codes With Process Bus Modules
RS422, 1 Channel RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels 2.4.2 Order codes with process bus modules Table 2-6: L30 order codes for horizontal units with process bus - * ** - * * * - F **...
Page 32 FRONT PANEL + INTERFACE English display French display Russian display Chinese display English display with 4 small and 12 large programmable pushbuttons French display with 4 small and 12 large programmable pushbuttons 2-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 33 7Q Channel 1 - G.703; Channel 2 - 1300 nm, single-mode Laser G.703, 1 Channel G.703, 2 Channels RS422, 1 Channel RS422, 2 Channels, 2 Clock Inputs 7W RS422, 2 Channels L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-19...
Page 34 ORDER CODES CHAPTER 2: PRODUCT DESCRIPTION Table 2-7: L30 order codes for reduced-size vertical units with process bus - * ** - * * * - F ** - H ** - L ** - N ** - R **...
Page 35 Channel 1 - G.703; Channel 2 - 1550 nm, single-mode Laser IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 1 Channel IEEE C37.94, 820 nm, 64 kbps, multimode, LED, 2 Channels 820 nm, multimode, LED, 1 Channel L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-21...
Page 36: Replacement Modules
Replacement modules can be ordered separately. When ordering a replacement CPU module or front panel, provide the serial number of your existing unit. Not all replacement modules apply to the L30 relay. The modules specified in the order codes for the L30 are available as replacement modules for the L30.
Page 37 Channel 1 - G.703; Channel 2 - 820 nm, multimode Channel 1 - G.703; Channel 2 - 1300 nm, multimode Channel 1 - G.703; Channel 2 - 1300 nm, single-mode ELED 820 nm, multimode, LED, 2 Channels L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-23...
Page 38: Signal Processing
(when applicable), and auxiliary voltages. The 2.4 kHz cut-off frequency applies to both 50 Hz and 60 Hz applications and fixed in the hardware, and thus is not dependent on the system nominal frequency setting. 2-24 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 39 The A/D converter has the following ranges of AC signals: Voltages: Eq. 2-1 Currents: Eq. 2-2 Current harmonics are estimated based on raw samples with the use of the full-cycle Fourier filter. Harmonics 2nd through 25th are estimated. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-25...
Page 40: Specifications
ICD/CID/IID files, and so on), IEEE 1588 (IEEE C37.238 power profile) based time synchronization, CyberSentry (advanced cyber security), the Parallel Redundancy Protocol (PRP), IEC 60870-5-103, and so on. 2.6 Specifications Specifications are subject to change without notice. 2-26 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 41: Protection Elements
> 2.0 × CT: ±1.5% of reading > 2.0 × CT rating Curve shapes: IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse, Short/Very/ Extremely Inverse; I t; FlexCurves™ (programmable); Definite Time (0.01 s base curve) Curve multiplier: Time Dial = 0.00 to 600.00 in steps of 0.01...
Page 42 0.1 to 2.0 x CT rating ±1.5% of reading > 2.0 x CT rating Curve shapes: IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse, Short/Very/ Extremely Inverse; I t; FlexCurves™ (programmable); Definite Time (0.01 s base...
Page 43 97 to 98% of pickup Level accuracy: ±0.5% of reading from 10 to 208 V Pickup delay: 0 to 600.00 s in steps of 0.01 Reset delay: 0 to 600.00 s in steps of 0.01 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-29...
Page 44 CT/VT module (not including 8Z modules) Pickup level: 0.1 to 10.00 pu in steps of 0.01 Reset delay: 0.000 to 65.535 s in steps of 0.001 Operating mode: number of counts, counts per time window 2-30 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 45: User-Programmable Elements
Time delay: 0 to 65535 ms in steps of 1 FLEX STATES Number: up to 256 logical variables grouped under 16 Modbus addresses Programmability: any logical variable, contact, or virtual input L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-31...
Page 46 Time-out timer: 3.0 to 60.0 s in steps of 0.1 Control inputs: step-up and 3-bit Power-up mode: restore from non-volatile memory or synchronize to a 3-bit control input or synch/restore mode 2-32 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 47: Monitoring
IEEE C37.118 or IEC 61850-90-5 standard Number of channels: 14 synchrophasors, 8 analogs, 16 digitals TVE (total vector error): <1% Triggering: frequency, voltage, current, power, rate of change of frequency, user-defined L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-33...
Page 48: Metering
±0.001 Hz (when voltage signal is used for frequency measurement) I = 0.1 to 0.25 pu: ±0.005 Hz I > 0.25 pu: ±0.02 Hz (when current signal is used for frequency measurement) 2-34 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 49: Inputs
379 Ω ±10% Conversion range: –1 to + 20 mA DC Accuracy: ±0.2% of full scale Type: Passive RTD INPUTS Types (3-wire): 100 Ω Platinum, 100 and 120 Ω Nickel, 10 Ω Copper L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-35...
Page 50: Power Supply
4 A / 250 V Interrupting capacity: 100 000 A RMS symmetrical 10 000 A 2.6.7 Outputs FORM-A RELAY Make and carry for 0.2 s: 30 A as per ANSI C37.90 Carry continuous: 2-36 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 51 48 V 0.5 A 125 V 0.3 A 250 V 0.2 A Operate time: < 8 ms Contact material: silver alloy FAST FORM-C RELAY Make and carry: 0.1 A max. (resistive load) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-37...
Page 52 99% Settling time to a step change: 100 ms Isolation: 1.5 kV Driving signal: any FlexAnalog quantity Upper and lower limit for the driving signal: –90 to 90 pu in steps of 0.001 2-38 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 53: Communication Protocols
PARALLEL REDUNDANCY PROTOCOL (PRP) (IEC 62439-3 CLAUSE 4, 2012) Ethernet ports used: 2 and 3 Networks supported: 10/100 Mb Ethernet OTHER TFTP, SFTP, HTTP, IEC 60870-5-104, Ethernet Global Data (EGD), IEEE C37.118 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-39...
Page 54: Inter-Relay Communications
At extreme temperatures these values deviate based on component tolerance. On average, the output power decreases as the temperature is increased by a factor of 1 dB / 5 °C. 2-40 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 55: Cybersentry Security
1 phasor metering page for each AC Source 5 tabular metering pages with dynamic metering and status event records page with dynamic update product information page settings, actual values, error messages (targets) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-41...
Page 56: Environmental
95% (non-condensing) at 55°C (as per IEC60068-2-30 variant 1, 6 days) OTHER Altitude: 2000 m (maximum) Pollution degree: Overvoltage category: Ingress protection: IP20 front, IP10 back Noise: 0 dB 2-42 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 57: Type Tests
Insulation: class 1, Pollution degree: 2, Over voltage cat II 1 Not tested by third party. 2.6.14 Production tests THERMAL Products go through an environmental test based upon an Accepted Quality Level (AQL) sampling process. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-43...
Page 58: Maintenance
Normally, cleaning is not required. When dust has accumulated on the front panel display, wipe with a dry cloth. To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized state once per year, for one hour continuously. 2-44 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 59: Installation
For any issues, contact GE as outlined in the For Further Assistance section in chapter 1. Check that you have the latest copy of the L30 Instruction Manual and the UR Family Communications Guide, for the applicable firmware version, at http://www.gegridsolutions.com/multilin/manuals/index.htm...
Page 60: Panel Cutouts
3.2.1 Horizontal units The L30 is available as a 19-inch rack horizontal mount unit with a removable front panel. The front panel can be specified as either standard or enhanced at the time of ordering. The enhanced front panel contains additional user-programmable pushbuttons and LED indicators.
Page 61 CHAPTER 3: INSTALLATION PANEL CUTOUTS Figure 3-1: Horizontal dimensions (enhanced front panel) Figure 3-2: Horizontal mounting (enhanced and graphical front panel) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 62 PANEL CUTOUTS CHAPTER 3: INSTALLATION Figure 3-3: Horizontal mounting and dimensions (standard front panel) Figure 3-4: Horizontal dimension (graphical front panel) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 63: Vertical Units
3.2.2 Vertical units The L30 is available as a reduced size (¾) vertical mount unit, with a removable front panel. The front panel can be specified as either standard or enhanced at the time of ordering. The enhanced front panel contains additional user- programmable pushbuttons and LED indicators.
Page 64 PANEL CUTOUTS CHAPTER 3: INSTALLATION Figure 3-5: Vertical dimensions (enhanced front panel) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 65 CHAPTER 3: INSTALLATION PANEL CUTOUTS Figure 3-6: Vertical and mounting dimensions (standard front panel) For side-mounting L30 devices with the enhanced front panel, see the following documents available on the UR DVD and the GE Grid Solutions website: • GEK-113180 —...
Page 66 PANEL CUTOUTS CHAPTER 3: INSTALLATION For side-mounting L30 devices with the standard front panel, use the following figures. Figure 3-7: Vertical side-mounting installation (standard front panel) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 67 CHAPTER 3: INSTALLATION PANEL CUTOUTS Figure 3-8: Vertical side-mounting rear dimensions (standard front panel) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 68: Rear Terminal Layout
Two-slot wide modules take their slot designation from the first slot position (nearest to CPU module), indicated by an arrow marker on the terminal block. The figure shows an example of rear terminal assignments. 3-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 69 Wire connections to these two modules at 13 inch-pounds. Figure 3-10: CPU modules and power supply The following figure shows the optical connectors for CPU modules. Figure 3-11: LC fiber connector (left) and ST fiber connector (right) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-11...
Page 70: Wiring
WIRING CHAPTER 3: INSTALLATION 3.3 Wiring 3.3.1 Typical wiring Figure 3-12: Typical wiring diagram (T module shown for CPU) 3-12 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 71: Dielectric Strength
The power supply module can be ordered for two possible voltage ranges, and the L30 can be ordered with or without a redundant power supply module option. Each range has a dedicated input connection for proper operation. The ranges are as follows (see the Specifications section of chapter 2 for details): •...
Page 72: Ct/Vt Modules
These modules have enhanced diagnostics that can automatically detect CT/VT hardware failure and take the relay out of service. CT connections for both ABC and ACB phase rotations are identical, as shown in the Typical Wiring Diagram. 3-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 73 UR models. Substitute the tilde “~” symbol with the slot position of the module in the following figure. Figure 3-15: CT/VT module wiring L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-15...
Page 74: Process Bus Modules
3.3.5 Process bus modules The L30 can be ordered with a process bus interface module. The module interfaces with the HardFiber Process Bus System, or HardFiber Brick, allowing bidirectional IEC 61850 fiber optic communications with up to eight HardFiber Bricks.
Page 75 Where a tilde “~” symbol appears, substitute the slot position of the module. Where a number sign “#” appears, substitute the contact number. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-17...
Page 76 ~6a, ~6c 2 Inputs Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs 3-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 77 ~5a, ~5c 2 Inputs 2 Outputs Solid-State Solid-State ~6a, ~6c 2 Inputs 2 Outputs Not Used Not Used ~7a, ~7c 2 Inputs 2 Outputs Solid-State Solid-State ~8a, ~8c 2 Inputs Not Used L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-19...
Page 78 WIRING CHAPTER 3: INSTALLATION Figure 3-17: Contact input and output module wiring (Sheet 1 of 2) 3-20 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 79 CHAPTER 3: INSTALLATION WIRING Figure 3-18: Contact input and output module wiring (Sheet 2 of 2) For proper functionality, observe the polarity shown in the figures for all contact input and output connections. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-21...
Page 80 L30 input even when the output is open, if there is a substantial distributed capacitance (represented by C1) present in the wiring between the output and the L30 input and the debounce time setting in the L30 relay is low enough.
Page 81 This operation of contact inputs also can be prevented by using the Auto-Burnish contact inputs or contact inputs with active impedance. Figure 3-21: Contact input connected to a contact output with resistor (R2) across the input L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-23...
Page 82 Eq. 3-2 The 2 mA current is used in case the contact input is connected across the GE Form A contact output with voltage monitoring. Otherwise use the amperage of the active circuit connected to the contact input when its contact output is open and the voltage across the contact input is third trigger threshold to calculate the resistor value.
Page 83 The auto-burnish feature can be disabled or enabled using the DIP switches found on each daughter card. There is a DIP switch for each contact, for a total of 16 inputs. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-25...
Page 84 Contact inputs susceptible to parasitic capacitance caused by long cable runs affected by switching surges from external circuits can result in inadvertent activation of contact inputs with the external contact open. In this case, GE recommends using the contact I/O module with active impedance circuit.
Page 85: Transducer Inputs And Outputs
The following figure illustrates the transducer module types (5A, 5C, 5D, 5E, and 5F) and channel arrangements that can be ordered for the relay. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-27...
Page 86 WIRING CHAPTER 3: INSTALLATION Where a tilde “~” symbol appears, substitute the slot position of the module. Figure 3-25: Transducer input/output module wiring The following figure show how to connect RTDs. 3-28 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 87: Rs232 Port
EnerVista UR Setup software provided with the relay. Cabling for the RS232 port is shown in the following figure for both 9-pin and 25-pin connectors. The baud rate for this port can be set, with a default of 115200 bps. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-29...
Page 88: Cpu Communication Ports
3.3.9 CPU communication ports 3.3.9.1 Overview In addition to the front panel RS232 port, there is a rear RS485 communication port. The CPU modules do not require a surge ground connection. 3-30 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 89 This common voltage is implied to be a power supply common. Some systems allow the shield (drain wire) to be used as common wire and to connect directly to the L30 COM terminal (#3); others function correctly only if the common wire is connected to the L30 COM terminal, but insulated from the shield.
Page 90: Irig-B
IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices. The IRIG-B code allows time accuracies of up to 100 ns. Using the IRIG-B input, the L30 operates an internal oscillator with 1 µs resolution and accuracy.
Page 91: Pilot Channel Communications
3.4 Pilot channel communications A special inter-relay communications module is available for the L30. This module is plugged into slot “W” in horizontally mounted units and slot “R” in vertically mounted units. Inter-relay channel communications is not the same as 10/ 100Base-F interface communications (available as an option with the CPU module).
Page 92: Fiber: Led And Eled Transmitters
PILOT CHANNEL COMMUNICATIONS CHAPTER 3: INSTALLATION All of the fiber modules use ST type connectors. For two-terminal applications, each L30 relay requires at least one communications channel. The current differential function must be “Enabled” for the communications module to properly operate. See the menu.
Page 93: Interface
The following figure shows the typical pin interconnection between two G.703 interfaces. For the actual physical arrangement of these pins, see the Rear Terminal Layout section earlier in this chapter. All pin interconnections are to be maintained for a connection to a multiplexer. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-35...
Page 94 Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module is inserted fully. 3-36 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 95 (S1 = ON) and set timing mode to loop timing (S5 = OFF and S6 = OFF). The switch settings for the internal and loop timing modes are shown. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-37...
Page 96 One source lies on the G.703 line side of the interface while the other lies on the differential Manchester side of the interface. Figure 3-39: G.703 dual loopback mode 3-38 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 97: Rs422 Interface
When used in single-channel applications, the RS422 interface links to higher-order systems in a typical way, observing transmit (Tx), receive (Rx), and send timing (ST) connections. However, when used in two-channel applications, certain L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-39...
Page 98 Figure 3-42: Timing configuration for RS422 two-channel, three-terminal application Data module 1 provides timing to the L30 RS422 interface via the ST(A) and ST(B) outputs. Data module 1 also provides timing to data module 2 TT(A) and TT(B) inputs via the ST(A) and AT(B) outputs. The data module pin numbers have been omitted in the figure because they vary by manufacturer.
Page 99: Two-Channel Two-Clock Rs422 Interface
(SCC) receive clock. 3.4.5 Two-channel two-clock RS422 interface The two-channel two-clock RS422 interface (module 7V) is for use with the synchrophasor feature. The figure shows the module connections. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-41...
Page 100: Rs422 And Fiber Interface
G.703 and fiber interfaces. When using a laser interface, attenuators can be necessary to ensure that you do not exceed the maximum optical input power to the receiver. 3-42 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 101: Ieee C37.94 Interface
The UR-series C37.94 communication module can be connected to the electrical interface (G.703, RS422, or X.21) of a non- compliant digital multiplexer via an optical-to-electrical interface converter that supports the IEEE C37.94 standard. The following figure shows the concept. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-43...
Page 102 5.60. For customers using firmware release 5.60 and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of L30 communication for two and three terminal applications.
Page 103 Modules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the following figure. Figure 3-51: Status LEDs The clock configuration LED status is as follows: • Flashing green — loop timing mode while receiving a valid data packet L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-45...
Page 104: C37.94Sm Interface
It also can be connected directly to any other UR-series relay with a C37.94SM module, as shown. In 2008, GE Grid Solutions released revised modules 2A and 2B for C37.94SM communication to enable multi-ended fault location functionality with firmware 5.60 release and higher. All modules 2A and 2B shipped since the change support this feature and are fully backward compatible with firmware releases below 5.60.
Page 105 PILOT CHANNEL COMMUNICATIONS and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of L30 communication for two and three terminal applications. Failure to use it at all ends results in intermittent communication alarms.
Page 106 Modules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the following figure. Figure 3-54: Status LEDs The clock configuration LED status is as follows: • Flashing green — loop timing mode while receiving a valid data packet 3-48 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 107: Activate Relay
RELAY SETTINGS: NEW SETTING Not Programmed Programmed HAS BEEN STORED When the "NEW SETTING HAS BEEN STORED" message appears, the relay is in "Programmed" state and the "In Service" LED turns on. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-49...
Page 108: Install Software
This device (catalog number F485) connects to the computer using a straight-through serial cable. A shielded twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the L30 rear communications port. The converter terminals (+, –, GND) are connected to the L30 communication module (+, –, COM) terminals. See the CPU Communication Ports section in chapter 3 for details.
Page 109: System Requirements
Select the Web option to ensure the most recent software release, or select CD if you do not have an Internet connection, then click the Add Now button to list software items for the product. EnerVista Launchpad obtains the software from the Internet or DVD and automatically starts the installation program. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-51...
Page 110: Add Device To Software
3.7 Add device to software You connect remotely to the L30 through the rear RS485 or Ethernet port with a computer running the EnerVista UR Setup software. The L30 also can be accessed locally with a computer through the front panel RS232 port or the rear Ethernet port using the Quick Connect feature.
Page 111: Set Ip Address In Ur
Online Window area, cannot be moved from it to another grouping, and needs to be renamed in the Device Setup window. GE instead recommends using the Device Setup window to add devices, as outlined here. 3.7.1 Set IP address in UR The IP and subnet addresses need to be added to the UR for Ethernet communication.
Page 112 ADD DEVICE TO SOFTWARE CHAPTER 3: INSTALLATION connections window. Or in Windows 7, access the Network and Sharing Center in the Control Panel. Right-click the Local Area Connection icon and select Properties. 3-54 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 113 Select the Internet Protocol (TCP/IP) item from the list, and click the Properties button. Click the “Use the following IP address” box. Enter an IP address with the first three numbers the same as the IP address of the L30 relay and the last number different (in this example, 1.1.1.2).
Page 114 Minimum = 0ms, Maximum = 0ms, Average = 0 ms Pinging 1.1.1.1 with 32 bytes of data: verify the physical connection between the L30 and the computer, and double-check the programmed IP address in setting, then repeat step 2. Product Setup  Communications  Network  IP Address...
Page 115 Click the Quick Connect button to open the window. Select the Ethernet interface and enter the IP address assigned to the L30, then click the Connect button. The EnerVista UR Setup software creates a site named “Quick Connect” with a corresponding device also named “Quick Connect”...
Page 116: Configure Serial Connection
For the RS232 connection, a computer with an RS232 port and a serial cable are required. To use the RS485 port at the back of the relay, a GE Grid Solutions F485 converter (or compatible RS232-to-RS485 converter) is required. See the F485 instruction manual for details.
Page 117: Configure Ethernet Connection
SEL-2032. This option enables display of a terminal window to allow interaction with the other device. 11. Click the Read Order Code button to connect to the L30 and upload the order code to the software. If a communications error occurs, ensure that the EnerVista software serial communications values entered in the previous step correspond to the relay setting values, and also ensure that the same IP address is not assigned to multiple L30 ports.
Page 118 12. If using a gateway to connect to the device, select Yes from the drop-down list. 13. Click the Read Order Code button to connect to the L30 device and upload the order code. If the device was entered already, a message displays "Device ’x’ is also using IP address.." If a communications error occurs, ensure that the values entered in the previous steps correspond to the relay setting values, and also ensure that the same IP address is not assigned to multiple L30 ports.
Page 119: Configure Modem Connection
CHAPTER 3: INSTALLATION ADD DEVICE TO SOFTWARE The device has been configured for Ethernet communications. Proceed to the Connect to the L30 section to begin communications. 3.7.4 Configure modem connection A modem connection allows a computer to communicate with a UR device over phone lines.
Page 120: Connect To The L30
When unable to connect because of an "ACCESS VIOLATION," access Device Setup and refresh the order code for the device. When unable to connect, ensure that the same IP address is not assigned to multiple L30 ports, for example under Settings > Product Setup > Communications > Network.
Page 121: Use Quick Connect Via The Front Panel Rs232 Port
Connect a nine-pin to nine-pin RS232 serial cable to the computer and the front panel RS232 port. Verify that the latest version of the EnerVista UR Setup software is installed (available from the GE EnerVista DVD or online from http://www.gegridsolutions.com/multilin). See the software installation section if not already installed.
Page 122: Use Quick Connect Via A Rear Ethernet Port
Connect" and displays them in the Online Window. Expand the sections to view data directly from the L30 device. Use the Device Setup button to change the site name. Each time that the EnerVista software is initialized, click the Quick Connect button to establish direct communications to the L30.
Page 123: Set Up Cybersentry And Change Default Password
IID — Instantiated IED capability description file — Actual settings on UR • CID — Configured IED description file — Settings sent to the UR (may or may not be actual settings) The import is done in the Offline Window area. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-65...
Page 124: Connect To D400 Gateway
3.11 Connect to D400 gateway A GE Multilin D400 Substation Gateway can be used to collect data from UR devices in a local area network (LAN). It collects metering, status, event, and fault report data from serial or LAN-based intelligent substation devices, and it pre-processes the data.
Page 125: Setting Files
These are the configuration/settings files in the IEC 61850 SCL/IID format. The ur.iid file is saved with a "_YYMMDDhhmmss" retrieval time stamp, for example ur_170525183124.iid. It is stored in the D400 folder system using the UR site and device name. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-67...
Page 126 CONNECT TO D400 GATEWAY CHAPTER 3: INSTALLATION 3-68 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 127: Interfaces
The EnerVista UR Setup software is provided with every L30. This chapter outlines the EnerVista software interface features. The EnerVista UR Setup Help File also provides details for getting started and using the software interface.
Page 128: Event Viewing
IP Address IP Subnet Mask IP Routing When a settings file is loaded to a L30 that is in-service, the following sequence occurs: The L30 takes itself out of service. The L30 issues a UNIT NOT PROGRAMMED major self-test error.
Page 129: File Support
Settings list / offline window area Software windows, with common toolbar Settings file data view windows, with common toolbar Workspace area with data view tabs Status bar 10. Quick action hot links L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 130: Protection Summary Window
The Protection Summary is a graphical user interface to manage elements, such as enabling and disabling them. Access it under Settings > Protection Summary. See the Settings chapter for information on use. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 131: Settings Templates
Right-click the selected device or settings file and select the Template Mode > Create Template option. The settings file template is now enabled and the file menus displayed in light blue. A message displays. The settings file is now in template editing mode. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 132 Figure 4-4: Settings template with all settings specified as locked Specify the settings to make viewable by clicking them. A setting available to view is displayed against a yellow background. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 133 Select an installed device or a settings file from the left menu of the EnerVista UR Setup window. Apply the template by selecting the Template Mode > View In Template Mode option. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 134 Once the template has been applied, users are limited to edit the settings specified by the template, but all settings are shown. The effect of applying the template to the phase time overcurrent settings is shown as follows. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 135: Secure And Lock Flexlogic Equations
4.1.8.1 Lock FlexLogic equations To lock individual entries of a FlexLogic equation: Right-click the settings file or online device and select the Template Mode > Create Template item to enable the settings template feature. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 136 The effect of applying the template to the FlexLogic entries is shown here. Figure 4-10: Locking FlexLogic entries through settings templates The FlexLogic entries are also shown as locked in the graphical view and on the front panel display. 4-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 137 Right-click the setting file in the offline window area and select the Edit Device Properties item. The window opens. Figure 4-12: Settings file properties window L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-11...
Page 138: Settings File Traceability
When a settings file is transferred to a L30 device, the date, time, and serial number of the L30 are sent back to EnerVista UR Setup and added to the settings file on the local computer. This information can be compared with the L30 actual values at any later date to determine if security has been compromised.
Page 139 4.1.9.2 Online device traceability information The L30 serial number and file transfer date are available for an online device through the actual values. Select the Actual Values > Product Info > Model Information menu item within the EnerVista online window as shown in the example.
Page 140: Front Panel Interface
The enhanced front panel consists of LED panels, an RS232 port, keypad, LCD display, control pushbuttons, and optional user-programmable pushbuttons. The front panel is hinged to allow access to removable modules inside the chassis. 4-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 141 The standard front panel can be horizontal or vertical. The following figure shows the horizontal front panel. Figure 4-18: Standard horizontal front panel The following figure shows the vertical front panel for relays ordered with the vertical option. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-15...
Page 142 The USB port is the square type B. User-programmable pushbuttons 9 to 16 can be programmed among the 10 pushbuttons on the left and right sides of the display. 4-16 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 143: Front Panel Display
The front panel can be viewed and used in the EnerVista software, for example to view an error message displayed on the front panel or the LEDs. To view the front panel in EnerVista software: Click Actual Values > Front Panel, then any option. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-17...
Page 144 The footer dynamically labels the Tab, or control, pushbuttons immediately below. Page content displays between the header and footer. The pages are arranged for navigation in a hierarchical structure similar to that used for the enhanced and standard front panels. 4-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 145 Active targets symbol. View error messages by pressing the Menu Tab pushbutton, then accessing the TARGETS menu. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-19...
Page 146 Factory default names are SLD 1, SLD 2, and so on. Pages that have no configured content have a blank Tab pushbutton label, and the Tab pushbutton does nothing. The label for the current page has a blue background. 4-20 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 147 Single-line diagram example The following example outlines how to create a circuit breaker diagram, then how to close the second circuit breaker. The figure shows six switches, two breakers, feeder, and ground. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-21...
Page 148 Line Diagram Editor. Add the four switches for the top line by clicking the GE switch symbol in the toolbar, then clicking in the window. If the UR device is not online, the software attempts to connect. Double-click to edit properties. Rotate switches SW569 and SW5682 to 270 degrees.
Page 149 Add the two lower switches. Leave rotation at 0 degrees. Add the breakers by clicking the GE breaker symbol in the toolbar, then clicking in the window. Double-click to edit properties, rotating 90 degrees and setting the color to red (open).
Page 150 Load — Opens single-line diagram files, which replaces all five windows with that in the file To save drawings as a separate file, click File > Save As. The file is saved in the .mif format. 4-24 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 151 Up to 32 static symbols can be used per single-line diagram. To add a symbol, click it in the toolbox, then click in the window. Double-click the symbol to open its properties window to set orientation. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-25...
Page 152 Each breaker and each disconnect can be configured to use the UR-style symbols, IEC symbols, or simple square/slash symbols as shown in the following figure. The symbols assume horizontal symbol orientation, red - closed color, and green - open scheme. With vertical orientation, they are rotated 90 degrees. 4-26 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 153 (horizontal or vertical), color scheme (red - closed, or red - open), and assigned side button (if any). If the selected breaker or disconnect element L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-27...
Page 154 A question mark displays in a symbol on the graphical front panel when status is bad. The question mark does not rotate with orientation. Figure 4-34: Symbols when status is bad The following figures show the orientation available for the static components. The default position is 0 degrees. 4-28 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 155 CHAPTER 4: INTERFACES FRONT PANEL INTERFACE Figure 4-35: Single-line diagram static symbol orientation (sheet 1 of 2) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-29...
Page 156 User-programmable pushbuttons 9 to 16 can be programmed among the 10 pushbuttons on the left and right sides of the screen display. They show dynamically and provide a means to perform the same control as a hardware user- programmable pushbutton. 4-30 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 157 To add a metering component, click the M symbol in the toolbox, then click in the window. Drag it to its final location. Double-click it to open the properties window. The figure shows the properties that can be edited. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-31...
Page 158 Self Reset, so the alarm displays in a solid color. The blue alarm type is Acknowledgeable, so the alarm flashes until it is acknowledged, for example by navigating with the arrow keys and pressing the ENTER button. The alarm then remains blue until the trigger condition is eliminated. 4-32 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 159 Alarm types of each window can be configured as Self Reset, Latched, or Acknowledgeable. In Self Reset mode, the window lighting follows the state of the configured FlexLogic operand. The self-reset mode alarm sequence conforms to ISA-18.1-1979 (R2004) standard type A 4 5 6. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-33...
Page 160 In Acknowledgeable mode, both Off to On and On to Off state changes in the configured operand cause the background to flash; the window must be acknowledged/reset to cancel flashing. This mode conforms to ISA-18.1-1979 (R2004) standard type R-6. 4-34 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 161 The last window is not configured and displays blank/grey. In order for the Ethernet and battery alarms to work, the corresponding self-test alarms have been enabled under Settings > Product Setup > User-Programmable Self Tests (not shown). L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-35...
Page 162 AC source. They display on the graphical front panel using the Metering Tab pushbutton. The path to the editor is Settings > Product Setup > Graphical Panel > Metering Editor. 4-36 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 163 Content to display is configured with the cell lines. The content can be actual values, a status indicator, or text. • Actual value — Select from the FlexAnalogs applicable to the L30, where a FlexAnalog is an analog parameter •...
Page 164: Front Panel Navigation Keys
The decimal key initiates and advances to the next character in text edit mode or enters a decimal point. key can be pressed at any time for context-sensitive help messages. HELP 4-38 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 165 Tab pushbutton — Five pushbuttons under the display. They navigate through the page hierarchy, and on some pages activate other actions. The display footer dynamically labels the page or action that is activated by the tab pushbutton. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-39...
Page 166: Led Indicators
“Enabled” or “Latched.” If a protection element target setting is “Enabled,” then the corresponding event-cause LEDs remain on as long as the operand associated with the element remains asserted. If a 4-40 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 167 Support for applying a customized label beside every LED is provided. Default labels are shipped in the label package of every L30, together with custom templates. The default labels can be replaced by user-printed labels. User customization of LED operation is of maximum benefit in installations where languages other than English are used to communicate with operators.
Page 168 Default labels for LED panel 2 The default labels are intended to represent the following: • GROUP 1...6 — The illuminated GROUP is the active settings group • BREAKER 1(2) OPEN — The breaker is open 4-42 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 169 TRIP — Indicates that the selected FlexLogic operand serving as a trip output has operated. This indicator latches; initiate the reset command to reset the latch. • ALARM — Indicates that the selected FlexLogic operand serving as an alarm output has operated L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-43...
Page 170: Front Panel Labelling
NEUTRAL/GROUND — LED 14 — Indicates that neutral or ground was involved 4.2.5 Front panel labelling 4.2.5.1 Enhanced front panel The following procedure requires these pre-requisites: • The UR front panel label cutout sheet (GE part number 1006-0047) has been downloaded from http://www.gegridsolutions.com/products/support/ur/URLEDenhanced.doc and printed • Small-bladed knife To create custom LED and pushbuttons labels for the enhanced front panel: Start the EnerVista UR Setup software.
Page 171 LED labels. Use the tool with the printed side containing the GE part number facing the user. The label package shipped with every L30 contains the three default labels, the custom label template sheet, and the label removal tool.
Page 172 Bend the tab at the center of the tool tail as shown. To remove the LED labels from the L30 front panel and insert the custom labels: Use the knife to lift the LED label and slide the label tool underneath. Ensure that the bent tabs are pointing away from the relay.
Page 173 Slide the new LED label inside the pocket until the text is properly aligned with the LEDs, as shown. To remove the user-programmable pushbutton labels from the L30 front panel and insert the custom labels: Use the knife to lift the pushbutton label and slide the tail of the label tool underneath, as shown. Ensure that the bent L30 LINE CURRENT DIFFERENTIAL SYSTEM –...
Page 174 Remove the tool and attached user-programmable pushbutton label. Slide the new user-programmable pushbutton label inside the pocket until the text is properly aligned with the 4-48 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 175 To create LED and pushbutton labels for a standard front panel: In the EnerVista software, if the L30 is not already listed in the Offline Window area, add it by right-clicking it and selecting the Add Device to Offline Window option.
Page 176 4.2.5.3 Graphical front panel The L30 includes software for labelling the LEDs and pushbuttons on the graphical front panel and a sticker sheet with pre- printed and blank labels. The pre-printed labels are on the top-left of the template sheet, and the blank labels are on the bottom-right.
Page 177: Menu Navigation
Use the down, right, left, and up arrows to navigate the menu. The up and down arrow keys move within a group of headers, sub-headers, setting values, or actual MESSAGE L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-51...
Page 178 The Page Up and Page Down Tab pushbuttons also navigate through the list. When there is only a single page of options, they jump to the first and last entries. The options displayed depend on order code. 4-52 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 179: Change Settings
This flash message momentarily appears as confirmation of the storing process. Numerical values that contain decimal places are rounded-off if more decimal place digits are entered than specified by the step value. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-53...
Page 180 An example is a confirmation message upon saving settings. This setting specifies how long to display the message. Press the Menu pushbutton to display the main menu. 4-54 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 181 Figure 4-56: Main menu Use the Up or Down pushbutton to select SETTINGS, then press the Right or ENTER pushbutton. Figure 4-57: Settings menu With PRODUCT SETUP selected, press the Right or ENTER pushbutton. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-55...
Page 182 As the FLASH MESSAGE TIME setting accepts a numerical value, a keypad displays. The time is to be changed to 4.0 seconds. 4-56 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 183 The shift key (up arrow on keyboard) is green upon activation, while the keyboard letters switch to upper case. The globe key (shown greyed-out) toggles the keyboard language between English and another display language selected, for example between English and French. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-57...
Page 184: View Actual Values
Each phasor page has a name, which consists of the value of the SOURCE # NAME setting appended with " Phasors." Phasor pages that have no configured CTs or VTs do not have a Tab pushbutton, and phasor pages that have no configured cells cannot be displayed. 4-58 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 185: Breaker Control
4.2.9 Breaker control The L30 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker, that can be presented on front panel LEDs, along with a breaker trouble indication. Breaker operations can be manually initiated from the front panel keypad or automatically initiated from a FlexLogic operand.
Page 186: Change Passwords
The information in this section refers to password security. For information on how to set the password for the first time or change CyberSentry passwords, see the previous chapter or the Settings > Product Setup > Security > CyberSentry section in the next chapter. 4-60 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 187 When entering a settings or command password via EnerVista or any serial interface, the user must enter the corresponding connection password. If the connection is to the back of the L30, the remote password must be used. If the connection is to the RS232 port of the front panel, the local password must be used.
Page 188: Logic Diagrams
By default, when an incorrect Command or Setting password has been entered via the front panel three times within five minutes, the FlexLogic operand is set to “On” and the L30 does not allow settings or command level LOCAL ACCESS DENIED access via the front panel for five minutes.
Page 189: Flexlogic Design Using Engineer
Works with all UR firmware versions The figure shows an example where several inputs are used to trigger an output. With the OR function, any one of the inputs can trigger the output. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-63...
Page 190 This section explains how to use Engineer. It outlines the following topics: • Design logic • Send file to and from device • Monitor logic • View front panel • Generate connectivity report • Preferences 4-64 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 191: Design Logic
Preparation — Under Settings > Inputs/Outputs > Virtual Outputs, virtual outputs 3 and 4 are named DLTrigger Top logic — Seven-minute timer trigger Bottom logic — Turn on LED 9 for 10 seconds when the trigger starts L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-65...
Page 192 This procedure uses input / output logic as an example. To create a logic diagram: In the Offline Window area, access Engineer for the device, then Logic Designer. If the device is not listed, right-click 4-66 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 193 Add the input blocks to the logic diagram. For example, click the I/O Tokens tab on the right, click the Input element, then click in the logic sheet to add it. Or drag-and-drop it. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-67...
Page 194 Line option. The cursor needs to be at the connection point to end the line, not elsewhere on the block. Note that the outline color is no longer red on the blocks. 4-68 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 195 The warning "input using disabled feature" means that input needs to be enabled. Double-click the block, click the View Associated Screen button, enable the setting, save, and recompile. The output and messages are explained in the next section. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-69...
Page 196 IEC 61850 panel and thereby become synchronized. The CID file and the IID file (depending on the preference 'Do not update IID file when updating SCL files') are updated. If the CID file is not already there, it is generated. 4-70 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 197 FLEXLOGIC DESIGN USING ENGINEER The location of these files is C:\ProgramData\GE Power Management\urpc, for example, in the Offline and Online folders. Any FlexLogic equations entered in the Offline Window area are erased. The logic drawn in the Logic Designer window in Engineer in the Offline Window area remain.
Page 198 Click the Ok button to save and exit from the window. In the logic diagram, select an element, then click in the drawing area to add it, click again to add a second box, and so on. 4-72 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 199 Optimization Summary. Changes also display when the FlexLogic Equation Editor is accessed. The logic diagram does not change. In the example shown, no lines were saved to free up space. Figure 4-81: Code optimization results L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-73...
Page 200 Type in the second text string box, or select any of the 32 previous searches from the drop-down list. Click the Search button. Any results display. The search applies to all tabs, not just the active tab. Double-click a search result to view the item. 4-74 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 201: Send File To And From Device
When a window opens, select the device to which you want to send the file, then click the Send button and confirm. The order codes must match. The file is sent to the live device. Any errors can be viewed in the log file at the prompt. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-75...
Page 202: Monitor Logic
(green box outline). In this case, the battery is weak and needs to be replaced. This can be viewed as the Replace Battery message on the front panel of the device and in the EnerVista software under Actual Values > Front Panel > Front Panel or Display/Keypad. 4-76 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 203: View Front Panel And Print Labels
To save the report and labels, click File > Save As, enter a file name, and select the FPR, JPG, or PDF format. Use the instructions in the second tab of the window to add the labels to the physical device. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-77...
Page 204: Generate Connectivity Report
View > Toolbar > Advanced Actions — Active when in Logic Designer. Toggles a toolbar to nudge, rotate, flip, or change the order of an element. View > Show Unused Pins — Enable to display unconnected pins. Disable to eliminate unconnected pins from the view, for example when printing. 4-78 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 205 File Information The text entered here displays at the bottom right of a diagram when printing, provided that the Show Title Block option is enabled. Note the option to change the logo from the GE logo to your company logo. Display The panel sets how the element boxes display.
Page 206 The software displays the color specified when an element is on. There is no color when the element is off. The software displays another color when the status cannot be determined and is unknown. 4-80 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 207 Options display for filtering, such as recording timing for Virtual Inputs and Outputs, but not Communications Status. 4.4.6.4 COMTRADE waveforms Waveform files are viewable in the EnerVista software. The preferences are unrelated to Engineer and are outlined in the UR Family Communications Guide. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-81...
Page 208: Toolbars
4.4.7.2 Token Toolbox Drawing Tools Draw a line. Click and drag to draw. Draw multiple joined lines. Click and drag for each line. Double-click to finish. 4-82 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 209 Input from another UR device. Teleprotection inputs/outputs and direct inputs/outputs are mutually exclusive and cannot be used simultaneously. Teleprotection inputs/outputs and direct inputs/outputs are mutually exclusive and cannot be used simultaneously. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-83...
Page 210 Tag-In can is used to reference an existing Tag-Out. It joins another diagram to a previous diagram. Boolean Tokens These symbols are used to create FlexLogic Equations. Use them as intermediate logic for the Virtual Output equations. The display can vary from that shown here. 4-84 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 211 Place a positive one shot and a negative one shot symbol in the Logic Designer diagram Place a timer in the Logic Designer diagram Elements These blocks configure properties of the element or use element operands as input to FlexLogic equations. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-85...
Page 212 Set the width of the selected components to the same width as the reference component Same Height Set the height of the selected components to the same height as the reference component 4-86 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 213 Front, Back Moves current components to the absolute front or back of all viewable layers Forward, Backward Moves current components on layer higher or lower than its original layer hierarchy L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-87...
Page 214 FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4: INTERFACES 4-88 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 215: Settings
 REAL TIME See page 5-108   CLOCK  FAULT REPORTS See page 5-113    OSCILLOGRAPHY See page 5-115    DATA LOGGER See page 5-117   L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 216  SETTINGS  SETTING GROUP 1 See page 5-208   GROUPED ELEMENTS   SETTING GROUP 2     SETTING GROUP 3    SETTING GROUP 4   L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 217 See page 5-315     SETTINGS TEST MODE Range: Disabled, Isolated, Forcible   TESTING FUNCTION: Disabled See page 5-319 TEST MODE FORCING: Range: FlexLogic operand   See page 5-319 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 218: Overview
For example, on a system with a 13.8 kV nominal primary voltage, the base quantity is 13800 V. With 14400:120 V delta- connected VTs, the secondary base quantity and secondary voltage setting is: Eq. 5-1 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 219: Introduction To Ac Sources
VT and the line VT. These requirements can be satisfied with a single L30, equipped with sufficient CT and VT input channels, by selecting proper parameter to measure. A mechanism is provided to specify the AC parameter (or group of parameters) used as the input to protection/control comparators and...
Page 220 CTs through which any portion of the current for the element being protected could flow. Auxiliary CTs are required to perform ratio matching if the ratios of the primary CTs to be summed are not identical. In the L30, provisions have been included for all the current signals to be brought to the device where grouping, CT ratio correction, and summation are L30 LINE CURRENT DIFFERENTIAL SYSTEM –...
Page 221 CHAPTER 5: SETTINGS OVERVIEW applied internally via configuration settings. Up to four currents can be brought into the L30; current summation and CT ratio matching is performed internally. A major advantage of internal summation is that individual currents are available to the protection device (for example, as additional information to apply a restraint current properly, or to allow the provision of additional features that operate on the individual currents, such as breaker failure).
Page 222: Product Setup
To reset the unit after a lost password: Email GE customer service at multilin.tech@ge.com with the serial number and using a recognizable corporate email account. Customer service provides a code to reset the relay to the factory defaults.
Page 223 When entering a settings or command password via EnerVista or any serial interface, the user must enter the corresponding connection password. If the connection is to the back of the L30, the remote password must be used. If the connection is to the RS232 port of the front panel, the local password must be used.
Page 224 Enter the new password in the New Password field. Requirements are outlined in the Password Requirements section earlier in this chapter. When an original password has already been used, enter it in the Enter Password field and click 5-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 225 INVALID ATTEMPTS BEFORE LOCKOUT The L30 provides a means to raise an alarm upon failed password entry. If password verification fails while accessing a password-protected level of the relay (either settings or commands), the FlexLogic operand is UNAUTHORIZED ACCESS asserted.
Page 226 ACCESS AUTH TIMEOUT immediately denied. If access is permitted and an off-to-on transition of the FlexLogic operand is detected, the timeout is restarted. The status of this timer updates every five seconds. 5-12 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 227 It is disabled by default to allow access to the device immediately after installation. When security is disabled, all users have administrator access. GE recommends enabling the EnerVista security before placing the device in service. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 228 If you force password entry by using this feature, ensure that you know the Administrator password. If you do not know the password and are locked out of the software, contact GE Grid Solutions for the default password of a UR device.
Page 229 The EnerVista security management system must be enabled (the Enable Security check box enabled) To modify user privileges: Select the Security > User Management item from the top menu to open the user management window. Locate the username in the User field. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-15...
Page 230 This feature requires a CyberSentry software option. See the Order Codes section in chapter 2 for details. The EnerVista software provides the means to configure and authenticate the L30 access using either a server or the device. Access to functions depends on user role.
Page 231 When the "Device" button is selected, the L30 uses its local authentication database and not the RADIUS server to authenticate the user. In this case, it uses built-in roles (Administrator, Engineer, Supervisor, Operator, Observer, or Administrator and Supervisor when Device Authentication is disabled), as login accounts and the associated passwords are stored on the L30 device.
Page 232 Figure 5-3: Security panel when CyberSentry installed For the Device > Settings > Product Setup > Supervisory option, the panel looks like the following. Figure 5-4: Supervisory panel For the Security panel, the following settings are available. 5-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 233 Administrator is to re-enable Device authentication when Device authentication is disabled. To re-enable Device authentication, the Supervisor unlocks the device for setting changes, and then the Administrator can re- enable Device authentication. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-19...
Page 234 Range: Administrator, Engineer, Supervisor,   None Operator, Factory (for factory use only), None  CHANGE LOCAL See page 5-21   PASSWORDS  SESSION See page 5-22   SETTINGS 5-20 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 235 • Observer — This role has read-only access to all L30 settings. This role allows unlimited concurrent access but it has no download access to any files on the device. Observer is the default role if no authentication has been done to the device.
Page 236 In Device authentication mode, the Observer role does not have a password associated with it. In Server authentication mode the Observer role requires a password. If you are locked out of the software, contact GE Grid Solutions for the default password. When using CyberSentry, the default password is "ChangeMe1#".
Page 237 SETTINGS  PRODUCT SETUP  SECURITY  SUPERVISORY  SELF TESTS  SELF TESTS  FAILED See below   AUTHENTICATE  FIRMWARE LOCK: Range: Enabled, Disabled  Enabled SETTINGS LOCK: Range: Enabled, Disabled  Enabled L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-23...
Page 238 After making any required changes, log out. When changing settings offline, ensure that only settings permitted by the role that performs the settings download are changed because only those changes are applied. 5-24 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 239 Clear Energy command (not applicable to all UR products) Clear Unauthorized Access command Clear Teleprotection Counters command (not applicable to all UR products) Clear All Relay Records command Role Log in Role Log off L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-25...
Page 240: Display Properties
PRODUCT SETUP CHAPTER 5: SETTINGS In addition to supporting syslog, a L30 with CyberSentry also saves the security events in two local security files, these being SECURITY_EVENTS.CSV and SETTING_CHANGES.LOG. Details on these files and how to retrieve them are available in the EnerVista software under Maintenance >...
Page 241 Some customers prefer very low currents to display as zero, while others prefer the current to display even when the value reflects noise rather than the actual signal. The L30 applies a cut-off value to the magnitudes and angles of the measured currents.
Page 242: Graphical Front Panel
The path is Settings > Product Setup > Graphical Panel > Home Page. The menu does not display when there is no graphical front panel. 5-28 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 243 Whenever an annunciator window changes state this list is re-evaluated, which can result in the home page displaying a different annunciator page. The Tabular option displays a configured actual values/metering page. The Targets option displays error messages. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-29...
Page 244 If the display rolls, the rolling mode pages remain displaying regardless of the home page or rolling mode delay specified. Each page displays for a few seconds; duration cannot be set. The path is Settings > Product Setup > Graphical Panel > Rolling Mode. 5-30 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 245 Range: 1 to 10 in steps of 1 Default: 1 This setting specifies the number of rolling pages. During rolling mode, the graphical front panel displays pages from 1 to the selected number. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-31...
Page 246 Metering Tab pushbutton on the graphical front panel. The Metering Editor is not used. The figures show setup and preview for monitoring actual values in a table on the graphical front panel. 5-32 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 247 A maximum of eight Status Inputs can be used per metering page, and 16 in all metering pages. Select the metering input from the drop-down list. The options reflect the FlexLogic operands applicable to the L30. They are inputs for all five metering pages, not just the current page.
Page 248 Range: 24-bit color selector Default: Black Set the text color to display in the specified cell. BACK COLOR Range: 24-bit color selector Default: Grey Set the background color to display for the specified cell. 5-34 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 249 Range: 1 to 12 in steps of 1 Default: 1 This setting specifies the number of integers in the displayed metered value. It can be used to provide for leading character spacing of the display value. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-35...
Page 250 User-Programmable Self Tests (not shown). When the alarms are triggered, they display with a red background. An alarm is acknowledged by using the arrow keys on the graphical front panel then pressing the Enter button. 5-36 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 251 Range: up to 20 alphanumeric characters Default: Page 1...Page 8 Up to 20 characters can be input as the name of each annunciator page. The number of pages depends on the Layout. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-37...
Page 252 The background color to display for any triggered cell, for example when alarm is triggered. Configure Range: Configure Default: Configure The Configure button becomes active when the CONTENT field is set to "Actual" or "Mixed." The window configures metered values. 5-38 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 253 (such as wrong password), IRIG-B clock failure, or breaker trouble, the Event Records display. When a breaker opens, a single-line diagram displays. For the Ethernet and IRIG-B failure operation to work, these functions also have been enabled under Settings > Product Setup > User-Programmable Self Tests. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-39...
Page 254: Clear Relay Records
SETTINGS  PRODUCT SETUP  CLEAR RELAY RECORDS  CLEAR RELAY CLEAR FAULT REPORTS: Range: FlexLogic operand   RECORDS CLEAR EVENT RECORDS: Range: FlexLogic operand  CLEAR OSCILLOGRAPHY: Range: FlexLogic operand  5-40 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 255: Communications
Selected records can be cleared from user-programmable conditions with FlexLogic operands. Assigning user- programmable pushbuttons to clear specific records is a typical application for these commands. Since the L30 responds to rising edges of the configured FlexLogic operands, they must be asserted for at least 50 ms to take effect.
Page 256 5.3.5.3 Ethernet network topology The L30 has three Ethernet ports. Each Ethernet port must belong to a different network or subnetwork. Configure the IP address and subnet to ensure that each port meets this requirement. Two subnets are different when the bitwise AND operation performed between their respective IP address and mask produces a different result.
Page 257 SCADA is provided through LAN2. P2 and P3 are connected to LAN2, where P2 is the primary channel and P3 is the redundant channel. In this configuration, P3 uses the IP and MAC addresses of P2. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-43...
Page 258 LAN2, to which port 2 (P2) is connected, and communications with SCADA on LAN3, to which port 3 (P3) is connected. There is no redundancy. Figure 5-15: Multiple LANS, no redundancy 5-44 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 259 IP addresses and mask. Configure the network IP and subnet settings before configuring the routing settings. To obtain a list of all port numbers used, for example for audit purposes, contact GE technical support with substantiating information, such as the serial number and order code of your device.
Page 260 2 is performed. The delay in switching back ensures that rebooted switching devices connected to the L30, which signal their ports as active prior to being completely functional, have time to completely initialize themselves and become active. Once port 2 is active again, port 3 returns to standby mode.
Page 261 UR 7 redundancy Failover is selected for redundancy. 5.3.5.6 Parallel Redundancy Protocol (PRP) The L30 is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details.
Page 262 Delete the default route by replacing the default gateway with the default value of 127.0.0.1. General conditions to be satisfied by static routes The following rules are validated internally: 5-48 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 263 Port 2 (IP address 10.1.2.2) connects the UR to LAN 10.1.2.0/24 and to the EnerVista software through Router2. Router2 has an interface on 10.1.2.0/24 and the IP address of this interface is 10.1.2.1. The configuration before release 7.10 was as follows: L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-49...
Page 264  MODBUS PROTOCOL MODBUS SLAVE Range: 1 to 254 in steps of 1   ADDRESS: 254 MODBUS TCP PORT Range: 0 to 65535 in steps of 1  NUMBER(502): 502 5-50 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 265 0 disables Modbus over TCP/IP, meaning closes the Modbus TCP port. When the port number is changed to 0, the change takes effect when the L30 is restarted. When it is set to 0, use the front panel or serial port to communicate with the relay.
Page 266 Range: 0 to 65519 in steps of 1  DEST ADDRESS: 1 DNP CURRENT SCALE Range: 0.001, 0.01. 0.1, 1, 10, 100, 1000, 10000,  FACTOR: 1 100000, 1000000, 10000000, 100000000 5-52 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 267 Range: 0 to 32 in steps of 1  CONTROL POINTS: 0 DNP TCP CONNECTION Range: 10 to 7200 s in steps of 1  TIMEOUT: 120 s DNP EVENT TIME BASE: Range: UTC, LOCAL  LOCAL L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-53...
Page 268 DNP ADDRESS unique address to each DNP slave. The L30 can specify a maximum of five clients for its DNP connections. These are IP addresses for the controllers to which the L30 can connect. The settings follow. SETTINGS  PRODUCT SETUP  COMMUNICATIONS  DNP PROTOCOL  DNP NETWORK CLIENT ADDRESSES ...
Page 269 DNP TCP connection for greater than the time specified by this setting, the connection is aborted by the L30. This frees up the connection to be re-used by a client. For any change to take effect, restart the relay.
Page 270 60870-5-104 point lists must be in one continuous block, any points assigned after the first “Off” point are ignored. 5.3.5.12 IEC 61850 protocol The L30 is provided with optional IEC 61850 communications. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details.
Page 271 The maximum number of simultaneous clients supported by the UR family is five. EnerVista setup for IEC 61850 The EnerVista UR Setup software provides the interface to configure L30 settings for the IEC 61850 protocol. This section describes this interface. The software also supports import/export and merging of IEC 61850 Substation Configuration Language (SCL) files as documented in the UR Family Communications Guide.
Page 272 Figure 5-19: IEC 61850 panel Opening the IEC 61850 window while online causes the UR Setup software to retrieve and import an SCL file from the L30. This System Configuration Description (SCD) file contains all the settings in the UR at the time of the file request, both those that are mapped into the IEC 61850 information model (that is, the "public"...
Page 273 When the Save button is clicked in the online IEC 61850 window, UR Setup software prepares a configured IED description (CID) file containing all the settings of the UR and sends the CID file to the L30. Upon receipt, the L30 checks the CID file for correctness, going out of service, then back into service when the CID file is accepted.
Page 274 Default: TEMPLATE The value entered sets the IED name used by IEC 61850 for the L30. An IED name unique within the network must be entered for proper operation. Valid characters are upper and lowercase letters, digits, and the underscore (_) character.
Page 275 Range: status-only, direct-with-normal-security, sbo-with-normal-security Default: sbo-with-normal-security This setting specifies the control service that clients must use to control the TEST MODE FUNCTION of the L30. An "on" control to <LDName>/LLN0.Mod changes TEST MODE FUNCTION to Disabled, an "on-blocked" control changes it to Forcible, and a "test/blocked"...
Page 276 Protection logical device has been set to instance name "Prot", the function-related name "Feeder1Prot" and the configuration revision "2016-03-07 08:46." The text is clipped on the right if the line is longer than the available width. The next paragraphs explain how to do this setup. 5-62 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 277 Figure 5-23: Menu for logical node If the insert option is selected, or the edit option is selected for other than the Master logical device, a logical device parameters edit dialog opens. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-63...
Page 278 Each logical device inst name is required to be unique within the device, and it cannot be blank. Also, if the corresponding functional ldName setting is blank, the concatenation of the IED name and the logical device 5-64 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 279 The UR increments the value of paramRev by one whenever one or multiple setting changes occurs in one Modbus write request by any means (front panel, Modbus, or MMS) other than by SCL file L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-65...
Page 280 A v7.4 device can send an R-GOOSE message to another v7.4 device when both have R-GOOSE active as the protocol • A v7.4 device can send a GOOSE message to another v7.4 device when both have GOOSE active as the protocol 5-66 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 281 Navigate to Settings > Product Setup > Communications > IEC 61850 > GOOSE > TxGOOSE > TxGOOSE1 to access the settings for the first TxGOOSE. The settings and functionality for the others are similar. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-67...
Page 282 Range: 0 to 129 VisibleString characters Default: TxGOOSE1 The entered value sets the goID value published in TxGOOSE1 messages, and can be used by subscribers to discriminate the TxGOOSE1 messages from other GOOSE messages. 5-68 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 283 VID values of 0 and 1 are assigned by IEEE 802.1Q to other functions and are not to be used for GOOSE. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-69...
Page 284 Also, Port 3 configuration in the CID file is ignored. The Port 3 ConnectedAP elements has no meaning, as ports 2 and 3 use the port 2 MAC address, IP address, and mask. 5-70 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 285 (test field in edition 1.0 messages) are accepted only when the UR Test Mode Function setting is set to Forcible or Isolated. RxGOOSE messages can be received through any UR Ethernet port. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-71...
Page 286 RxGOOSE1 messages. An entered address of zero disables RxGOOSE1. If the publisher is a UR series 7.3x device, the setting needs to match the value of the publisher’s TxGOOSE DST MAC setting. 5-72 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 287 <GoCBName> is the name of the publishing control block. The L30 translates the ACSI format required for this setting to the MMS format used in GOOSE messages: <LDName>/LLN0$GO$<GoCBName> If the publisher is a UR 7.3x or 7.40 series device, <LDName> is the value of the publisher's Master functional ldName setting if that setting is not empty, otherwise it is the value of the publisher's IED NAME suffixed with "Master".
Page 288 7.40 UR Setup RxGOOSE Inputs pages. In this case the Member setting displays as the product-related name used by the publishing IED of the data object or data attribute, in standard SCSM format (e.g. Publisher1LD1/LLN0$ST$Off$stVal). 5-74 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 289 (supported in version 7.40 and later). When the file format is SCD, the system lists all IEDs inside the SCD file and lets the user select the ones to add. The figure shows a selection being made by importing a CID file using the Add IED function. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-75...
Page 290 This setting selects the logic state for the RxGOOSE Boolean1 FlexLogic operand if the UR has just completed startup and the selected RxGOOSE has not yet received a message, or the selected RxGOOSE has lost its connectivity with the publisher. The following choices are available: 5-76 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 291 Default: None This setting selects the GOOSE message containing the value that drives the RxGOOSE DPS1 FlexLogic operand. If set to None, the RxGOOSE DPS1 FlexLogic operand assumes its default state. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-77...
Page 292 (supported in version 7.40 and later). When the file format is SCD, the system lists all IEDs inside the SCD file and lets the user select the ones to add. Figure 5-31: RxGOOSE Analog Inputs panel There are 32 RxGOOSE analog inputs. 5-78 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 293 Range: 0.000 to 1000000000.000 in steps of 0.001 Default: 1.000 This setting specifies the per-unit base value for other L30 features to use with the RxGOOSE Analog1 operand. A FlexElement for instance subtracts two quantities after converting their values to integers rescaled to a common base, the common base being the largest of the base values of the two quantities.
Page 294 RptEna attribute is false. Buffered and unbuffered reports Navigate to Settings > Product Setup > Communications > IEC 61850 > Reports > Buffered Reports or Unbuffered Reports. 5-80 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 295 Also, the control block can be configured to send integrity reports containing the present value of all members either on demand from the client or periodically. A TCP handshaking mechanism causes messages that are not read and acknowledged by the client to be retransmitted. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-81...
Page 296 Control blocks and data sets can be pre-configured by sending the L30 a CID file. See the UR Family Communications Guide for details. EnerVista UR Setup also can be used to select the data set members and to pre-configure the control blocks.
Page 297 This setting selects the data set whose members' status is reported in Unbuffered Report1 messages using the UR Setup software designator for the data set. The IEC 61850 name of the data sets are configured in the Datasets panel, as described later. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-83...
Page 298 DataSets Navigate to Settings > Product Setup > Communications > IEC 61850 > DataSets. 5-84 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 299 The DataSet name is not copied or pasted. In short, use this feature to copy a DataSet Member setting and paste it into another Member setting, a text file, or Word, as examples. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-85...
Page 300 Select the member from the drop-down list. Or right-click an entry to copy, paste, delete, or insert. Product setup Navigate to Settings > Product Setup > Communications > IEC 61850 > Product Setup. 5-86 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 301 Deadband parameters of measured values related to the Energy metering are configured here. Real Time Clock Navigate to Settings > Product Setup > Communications > IEC 61850 > Product Setup > Real Time Clock. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-87...
Page 302 However, a tabulation of the analog values and their associated deadband setting can be found in the UR Family Communications Guide. 5-88 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 303 Auxiliary voltage — 275 x auxiliary VT ration setting • Power (real, reactive, apparent, 3-phase, and 1-phase) — 4 × phase CT primary setting × 1.5 × VT Secondary setting × VT ratio setting L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-89...
Page 304 While the selected operand is asserted, Bkr0XCBR1.Loc.stVal is true and IEC 61850 commands to BkrCSWI1.Pos and Bkr0XCBR1.Pos are not accepted, and a Negative Response (-Rsp) is issued with the REASON CODE of Blocked-by- switching-hierarchy. 5-90 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 305 Bkr0XCBR1.BlkOpn.ctlVal signal on the Breaker Control Logic (Sheet 1 of 2) diagram in the Settings > System Setup section later. This signal when true blocks breaker 1 trip control while the operand selected by setting XCBR1 ST.LOC OPERAND is not active. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-91...
Page 306 Navigate to Settings > Product Setup > Communications > IEC 61850 > System Setup > Switches > Switch 1 to access the settings that configure the IEC 61850 protocol interface with the first disconnect switch control and status monitoring element. The settings and functionality for the others are similar. 5-92 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 307 > System Setup section later. These signals force a disconnect switch trip or close control while the operand selected by setting XSWI1 ST.LOC OPERAND is not active. "sbo" here is select-before-operate. Enhanced security means that the L30 reports to the client the disconnect switch 1 position the end of the command sequence.
Page 308 SelectEditSG. The setting related to these IEC 61850 commands are described here. Navigate to Settings > Product Setup > Communications > IEC 61850 > Control Elements > Setting Groups to access the setting that configures the IEC 61850 setting group commands. 5-94 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 309 Navigate to Settings > Product Setup > Communications > IEC 61850 > Settings for Commands to access the settings that configure the IEC 61850 protocol interface for record clear commands. Figure 5-43: Commands panel L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-95...
Page 310 This setting selects the control model clients must use to successfully control the command CLEAR FAULT REPORTS. "sbo" here is select-before-operate. Enhanced security means that the L30 reports to the client the breaker 1 position at the end of the command sequence.
Page 311 Navigate to Settings > Product Setup > Communications > IEC 61850 > GGIO > GGIO2 to access the settings that configure the IEC 61850 protocol interface for Virtual Input commands. Figure 5-45: GGIO2 panel L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-97...
Page 312 <LDName>/GGIO4.AnIn01.instMag.f. The value of the FlexAnalog operand is converted automatically to the format and scaling required by the standard, that is to say primary amperes, primary volts, and so on. See Appendix A for a list of FlexAnalog operands. 5-98 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 313 File transfer by IEC 61850 The L30 supports file transfer by IEC 61850. The approach is as follows, using the SISCO AX-S4 61850 client software as an example. In the AX-S4 61850 Explorer window, click the Tools menu and access the SISCO File Transfer Utility.
Page 314 NUMBER(80): 80 The L30 contains an embedded web server and can display pages in a web browser. The web pages are organized as a series of menus that can be accessed starting at the L30 “Main Menu.” Web pages are read-only and are available showing DNP and IEC 60870-5-104 points lists, Modbus registers, event records, fault reports, and so on.
Page 315 NUMBER: 0 The Trivial File Transfer Protocol (TFTP) can be used to transfer files from the L30 over a network. The L30 operates as a TFTP server. TFTP client software is available from various sources, including Microsoft Windows NT. The dir.txt file obtained from the L30 contains a list and description of all available files, for example event records and oscillography.
Page 316 COMMUNICATIONS  PROTOCOL connected to a maximum of two masters (usually either an RTU or a SCADA master station). Since the L30 maintains two sets of IEC 60870-5-104 data change buffers, ideally no more than two masters actively communicate with the L30 at one time.
Page 317 0.0.0.0 The L30 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to which the L30 can connect. A maximum of two simultaneous connections are supported at any given time.
Page 318 PTP, or SNTP, its time is overwritten by these three sources, if any of them is active. If the synchronization timeout occurs and none of IRIG-B, PTP, or SNTP is active, the L30 sets the invalid bit in the time stamp of a time-tagged message.
Page 319 OFFSET: 0 The configuration menu allows a maximum of four ASDUs containing measurands. Measurands are sent as a response to Class 2 requests, which are cyclic requests coming from the master. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-105...
Page 320 FlexAnalog operands. The measurands sent are voltage, current, power, power factor, and frequency. If any other FlexAnalog is chosen, the L30 sends 0 instead of its value. Note that the power is transmitted in KW, not W. Measurands are transmitted as ASDU 3 or ASDU 9 (type identification value set to measurands I, respectively measurands II).
Page 321 Commands are received as General Command (Type Identification 20). The user can configure the action to perform when an ASDU command comes. A list of available mappings is provided on the L30. This includes 64 virtual inputs (see the following table). The ON and OFF for the same ASDU command can be mapped to different virtual inputs.
Page 322: Modbus User Map
ADDRESS The UR Family Communications Guide outlines the Modbus memory map. The map is also viewable in a web browser; enter the IP address of the L30 in a web browser and click the option. 5.3.7 Real-time clock 5.3.7.1 Menu SETTINGS ...
Page 323 FlexLogic operand is CLOCK UNSYNCHRONIZED activated. When the L30/L90 channel asymmetry function is used, the relay’s real time clock must be synchronized to an external time source using PTP or IRIG-B, typically from a global positioning system (GPS) receiver. setting displays when the relay includes the IEEE 1588 software option. The setting configures...
Page 324 See the Order Codes section in chapter 2 for details. The L30 supports the Precision Time Protocol (PTP) specified in IEEE Std 1588 2008 using the Power Profile (PP) specified in IEEE Std C37.238 2011. This enables the relay to synchronize to the international time standard over an Ethernet network that implements PP.
Page 325 Except in unusual cases, the two fibers are of essentially identical length and composition, so make this setting zero. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-111...
Page 326 L30 clock is closely synchronized with the SNTP/ NTP server. It takes up to two minutes for the L30 to signal an SNTP self-test error if the server is offline.
Page 327: Fault Reports
 2:00 The L30 maintains two times: local time and Universal Coordinated Time (UTC). Local time can be provided by IRIG-B signals. UTC time is provided by SNTP servers. The real-time clock (RTC) and time stamps reported in historical records and communication protocols can be incorrect if the Local Time settings are not configured properly.
Page 328 MAG: 0.00 Ω The L30 relay supports one fault report and an associated fault locator per CT bank to a maximum of two. The signal source and trigger condition, as well as the characteristics of the line or feeder, are entered in this menu.
Page 329: Oscillography
ACTUAL VALUES  menu to view the number of cycles captured per record. The following table provides sample RECORDS  OSCILLOGRAPHY configurations with corresponding cycles/record. The minimum number of oscillographic records is three. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-115...
Page 330 To populate quickly the rows in the Offline Window, use Ctrl C/V to copy/paste, or click then double-click a row to display a quick selection window. Figure 5-49: Quick selection window 5-116 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 331: Data Logger
The relay automatically partitions the available memory between the channels in use. The following table outlines examples of storage capacities for a system frequency of 60 Hz. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-117...
Page 332: User-Programmable Leds
“Off” without overwriting old data. 5.3.11 User-programmable LEDs 5.3.11.1 Menu - Enhanced and standard front panels SETTINGS  PRODUCT SETUP  USER-PROGRAMMABLE LEDS  USER-PROGRAMMABLE  LED TEST See below   LEDS  5-118 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 333 LEDs are tested in the same manner. This test checks for hardware failures that lead to more than one LED being turned on from a single logic point. This stage can be interrupted at any time. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-119...
Page 334 Configure user-programmable pushbutton 1 by making the following entries in the SETTINGS  PRODUCT SETUP  USER- menu. (The option does not display when not purchased.) PROGRAMMABLE PUSHBUTTONS  USER PUSHBUTTON 1 5-120 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 335 “Latched,” the LED, once lit, remains so until reset by the front panel button, from a remote device via a RESET communications channel, or from any programmed operand, even if the LED operand state de-asserts. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-121...
Page 336: User-Programmable Self-Tests
LED NEUTRAL/GROUND EVENT CAUSE LED 9 Orange 5.3.12 User-programmable self-tests SETTINGS  PRODUCT SETUP  USER-PROGRAMMABLE SELF TESTS  USER-PROGRAMMABLE RxGOOSE OFF Range: Disabled, Enabled   SELF TESTS FUNCTION: Enabled 5-122 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 337: Control Pushbuttons
These are user-programmable and can be used for various applications such as performing an LED test, switching setting groups, and invoking and scrolling though user-programmable displays. The location of the control pushbuttons are shown in the following figures. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-123...
Page 338 CHAPTER 5: SETTINGS Figure 5-51: Control pushbuttons (enhanced front panel) An additional four control pushbuttons are included on the standard front panel when the L30 is ordered with the 12 user- programmable pushbutton option. Figure 5-52: Control pushbuttons (standard front panel) Control pushbuttons are not typically used for critical operations and are not protected by the control password.
Page 339: User-Programmable Pushbuttons
Range: 0 to 60.00 s in steps of 0.05  TIME: 0.00 s PUSHBTN 1 LED CTL: Range: FlexLogic operand  PUSHBTN 1 MESSAGE: Range: Disabled, Normal, High Priority  Disabled PUSHBUTTON 1 Range: Disabled, Enabled  EVENTS: Disabled L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-125...
Page 340 PRODUCT SETUP CHAPTER 5: SETTINGS The L30 is provided with this optional feature, specified as an option at the time of ordering. Using the order code for your device, see the order codes in chapter 2 for details. User-programmable pushbuttons provide an easy and error-free method of entering digital state (on, off) information. The number depends on the front panel ordered.
Page 341 The pulse duration of the remote set or local front panel pushbutton must be at least 50 ms to operate the pushbutton. This allows the user-programmable pushbuttons to properly operate during power cycling events and various system disturbances that can cause transient assertion of the operating signals. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-127...
Page 342 PUSHBTN 1 AUTORST DELAY mode. — This setting assigns the FlexLogic operand serving to inhibit user-programmable pushbutton PUSHBTN 1 REMOTE operation from the operand assigned to the settings. PUSHBTN 1 SET PUSHBTN 1 RESET 5-128 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 343 10 seconds. — If this setting is enabled, each user-programmable pushbutton state change is logged as an PUSHBUTTON 1 EVENTS event into the event recorder. The figures show the user-programmable pushbutton logic. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-129...
Page 344 PRODUCT SETUP CHAPTER 5: SETTINGS Figure 5-57: User-programmable pushbutton logic (Sheet 1 of 2) 5-130 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 345: Flex State Parameters
The state bits can be read out in the “Flex States” register array beginning at Modbus address 0900h. Sixteen states are packed into each register, with the lowest-numbered state in the lowest-order bit. Sixteen registers accommodate the 256 state bits. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-131...
Page 346: User-Definable Displays
When this type of entry occurs, the sub-menus are automatically configured with the proper content—this content can be edited subsequently. 5-132 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 347: Installation
The units are only displayed on both lines if the units specified both the top and bottom line items are different. 5.3.17 Installation SETTINGS  PRODUCT SETUP  INSTALLATION  INSTALLATION RELAY SETTINGS: Range: Not Programmed, Programmed   Not Programmed L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-133...
Page 348: Remote Resources
5.4 Remote resources 5.4.1 Remote resources configuration When the L30 is ordered with a process card module as a part of HardFiber system, an additional Remote Resources menu tree is available in the EnerVista software to allow configuration of the HardFiber system.
Page 349: System Setup
1000:1 CT before summation. If a protection element is set up to act on SRC 1 currents, then a pickup level of 1 pu operates on 1000 A primary. The same rule applies for current sums from CTs with different secondary taps (5 A and 1 A). L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-135...
Page 350: Power System
5-136 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 351: Signal Sources
FREQUENCY TRACKING frequency applications. The frequency tracking feature functions only when the L30 is in the “Programmed” mode. If the L30 is “Not Programmed,” then metering values are available but can exhibit significant errors. Select the nominal system frequency as 50 Hz or 60 Hz only. The...
Page 352 CT wiring problem. A disturbance detector is provided for each source. The 50DD function responds to the changes in magnitude of the sequence currents. The disturbance detector logic is as follows. 5-138 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 353 8 CTs 4 CTs, 4 VTs 4 CTs, 4 VTs C60, D60, G30, G60, L30, L90, M60, T60 not applicable This configuration can be used on a two-winding transformer, with one winding connected into a breaker-and-a-half system. The following figure shows the arrangement of sources used to provide the functions required in this application, and the CT/VT inputs that are used to provide the data.
Page 354: Power System
 NUMBER OF CHANNELS: Range: 1, 2  CHARGING CURRENT Range: Disabled, Enabled  COMPENSATN: Disabled POS SEQ CAPACITIVE Range: 0.100 to 65.535 kΩin steps of 0.001  REACTANCE: 0.100 kΩ 5-140 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 355   TRANSFORMER Any changes to the L30 power system settings change the protection system configuration. As such, the 87L protection at all L30 protection system terminals must be temporarily disabled to allow the relays to acknowledge the new settings.
Page 356 2 (or 3 for a three-terminal line) before use in the previous equations. If the reactors installed at both ends of the line are different, the following equations apply: For two terminal line: Eq. 5-9 For three terminal line: Eq. 5-10 where 5-142 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 357 LOCAL (TERMINAL 1 and TERMINAL 2) ID NUMBER desirable to ensure the data used by the relays protecting a given line comes from the correct relays. The L30 performs this check by reading the ID number contained in the messages sent by transmitting relays and comparing this ID to the programmed correct ID numbers by the receiving relays.
Page 358 Fail-safe output of the GPS receiver — Some receivers can be equipped with the fail-safe output relay. The L30 system requires a maximum error of 250 µs. The fail-safe output of the GPS receiver can be connected to the local L30 via an input contact.
Page 359 µs, or accuracy less than 250 µs, or unknown accuracy/error (that is, not locked to an international time standard). Apply two security counts (2 seconds) to both set and reset of this operand when change is based on accuracy. There is no corresponding quality test for IRIG-B sources here. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-145...
Page 360 5.5.4.2 In-zone transformer SETTINGS  SYSTEM SETUP  87L POWER SYSTEM  IN-ZONE TRANSFORMER  IN-ZONE IN-ZONE TRANSFORMER Range: None, 0 to 330° lag in steps of 30°   TRANSFORMER CONNECTION: None 5-146 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 361: Breakers
 LOCAL-TAP The L30 is provided with this optional feature, specified as an option at the time of ordering. Using the order code for your device, see the order codes in chapter 2 for details. These settings ensure that the 87L element correctly applies magnitude and phase compensation for the in-zone transformer.
Page 362 Range: 0.000 to 65.535 s in steps of 0.001  SEAL-IN: 0.000 s BREAKER 1 OUT OF SV: Range: FlexLogic operand  BREAKER 1 RACKED-IN: Range: FlexLogic operand  BREAKER 1 EVENTS: Range: Disabled, Enabled  Disabled 5-148 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 363 — If the mode is selected as three-pole, this setting has no function. If the mode is selected as single- BREAKER 1 ΦC CLOSED pole, this input is used to track the breaker phase C closed position as outlined for phase A. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-149...
Page 364 If this setting is set to Off, the racked status is not considered. 5-150 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 365 CHAPTER 5: SETTINGS SYSTEM SETUP Figure 5-65: Dual breaker control logic (Sheet 1 of 3) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-151...
Page 366 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-66: Dual breaker control logic (Sheet 2 of 3) 5-152 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 367: Disconnect Switch Control
  FUNCTION: Disabled SWITCH 1 NAME: Range: up to six alphanumeric characters  SW 1 SWITCH 1 MODE: Range: 3-Pole, 1-Pole  3-Pole SWITCH 1 OPEN: Range: FlexLogic operand  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-153...
Page 368 — This setting selects “3-Pole” mode, where disconnect switch poles have a single common auxiliary SWITCH 1 MODE switch, or “1-Pole” mode where each disconnect switch pole has its own auxiliary switch. 5-154 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 369 — This setting specifies the delay interval during which a disagreement of status among the pole SWITCH 1 ALARM DELAY position tracking operands do not declare a pole disagreement. This allows for non-simultaneous operation of the poles. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-155...
Page 370 CHAPTER 5: SETTINGS IEC 61850 functionality is permitted when the L30 is in “Programmed” mode and not in local control mode. The switch element has direct hard-coded connections to the IEC 61850 model as shown in the logic diagrams. This allows remote open/close operation of each switch, using either CSWI or XSWI IEC 61850 logical nodes.
Page 371 CHAPTER 5: SETTINGS SYSTEM SETUP Figure 5-69: Disconnect switch control status logic (sheet 2 of 3) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-157...
Page 372: Flexcurves
FlexCurve, enter the reset and operate times (using the keys) for each selected pickup point (using the VALUE up/down keys) for the required protection curve (A, B, C, or D). MESSAGE 5-158 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 373 The recloser curve configuration window shown here appears when the Initialize From setting in the EnerVista software is set to “Recloser Curve” and the Initialize FlexCurve button is clicked. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-159...
Page 374 MRT and from then onwards the operating time remains at 200 ms. Figure 5-72: Composite recloser curve with HCT disabled With the HCT feature enabled, the operating time reduces to 30 ms for pickup multiples exceeding eight times pickup. 5-160 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 375 EnerVista software generates an error message and discards the proposed changes. 5.5.7.5 Standard recloser curves The following graphs display standard recloser curves available for the L30. Figure 5-74: Recloser curves GE101 to GE106 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 376 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-75: Recloser curves GE113, GE120, GE138, and GE142 Figure 5-76: Recloser curves GE134, GE137, GE140, GE151, and GE201 5-162 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 377 CHAPTER 5: SETTINGS SYSTEM SETUP Figure 5-77: Recloser curves GE131, GE141, GE152, and GE200 Figure 5-78: Recloser curves GE133, GE161, GE162, GE163, GE164, and GE165 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-163...
Page 378 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-79: Recloser curves GE116, GE117, GE118, GE132, GE136, and GE139 Figure 5-80: Recloser curves GE107, GE111, GE112, GE114, GE115, GE121, and GE122 5-164 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 379: Phasor Measurement Unit
  CONFIGURATION The L30 is provided with an optional Phasor Measurement Unit (PMU) feature. This feature is specified as a software option at the time of ordering. The number of PMUs available also depends on this option. Using the order code for your device, see the order codes in chapter 2 for details.
Page 380 The figure shows an example of an N60 using four Logical Device PMUs (Logical Device 2 through 5) and four aggregators. The control blocks for the aggregators are located in LD1. A 64 character LDName setting is provided. 5-166 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 381 MxxMMXU1 ClcMth = M-Class (Note Vaux is mapped to Vneut of MMXU) • MxxMSQI1 ClcMth = M-CLASS • NxxMMXU1 ClcMth = M-Class (Note Vaux is mapped to Vneut of MMXU) • NxxMSQI1 ClcMth = M-CLASS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-167...
Page 382 The mapping is implemented as STN-IDCode (text string). From each PMU, the user selects the phasor information of interest that is mapped into the selected aggregator datset(s). For version 7.0 and later, only FCDA data is supported. 5-168 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 383 5.5.8.6 Configuration example: CFG-2 based configuration (using IEC 61850-90-5) The L30 is expected to send the CFG-2 file (IEEE C37.118 config. file) upon request from the upstream synchrophasor devices (for example, P30) without stopping R-SV multicasting, as shown in the following figure. The primary domain controller (PDC) does not need to use a stop/start data stream command if the UR protocol is set to IEC 61850-90-5 prior to requesting the configuration via CFG-2 (IEEE C37.118 config.
Page 384 PMU 1 IDCODE: Range: 1 to 65534 in steps of 1  PMU 1 STN: Range: 32-character ASCII string truncated to 16  characters if mapped into C37.118 Default: GE-UR-PMU GE-UR-PMU 5-170 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 385 Range: 16-character ASCII string  NM: Dig Channel 16 PMU 1 D-CH- 1 Range: Off, On  NORMAL STATE: Off  PMU 1 D-CH-16: Range: Off, On  NORMAL STATE: Off L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-171...
Page 386 10 Hz, 12 Hz, 15 Hz, 20 Hz, 30 Hz, 60 Hz, or 120 Hz (or 10 Hz, 25 Hz, 50 Hz, or 100 Hz when the system frequency is 50 Hz) when entered via the keypad or software; and the L30 stops the transmission of reports.
Page 387 (magnitude and angle) coordinates. This setting complies with bit-0 of the FORMAT field of the IEEE C37.118 configuration frame. With 90-5 PMU, the FORMAT and STYLE are Floating-point and Polar respectively, as specified in the IEC 61850-90-5 technical report. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-173...
Page 388 MAG: 100.0% PMU 1 IG CALIBRATION Range: –5.00 to 5.00° in steps of 0.05  ANGLE: 0.00° PMU 1 IG CALIBRATION Range: 95.0 to 105.0 in steps of 0.1%  MAG: 100.0% 5-174 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 389 When receiving synchrophasor data at multiple locations, with possibly different reference nodes, it can be more beneficial to allow the central locations to perform the compensation of sequence voltages. • This setting applies to PMU data only. The L30 calculates symmetrical voltages independently for protection and control purposes without applying this correction. •...
Page 390 PMU 1 FREQ TRIGGER Range: 20.00 to 70.00 Hz in steps of 0.01  LOW-FREQ: 49.00 Hz PMU 1 FREQ TRIGGER Range: 20.00 to 70.00 Hz in steps of 0.01  HIGH-FREQ: 61.00 Hz 5-176 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 391 L30 standards. This element requires that the frequency be above the minimum measurable value. If the frequency is below this value, such as when the circuit is de-energized, the trigger drops out.
Page 392 Range: 0.00 to 600.00 s in steps of 0.01  DPO TIME: 1.00 s PMU 1 CURR TRIG BLK: Range: FlexLogic operand  PMU 1 CURR TRIGGER Range: Self-reset, Latched, Disabled  TARGET: Self-reset 5-178 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 393 The trigger responds to the single-phase and three-phase power signals of the Phasor Measurement Unit (PMU) source. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-179...
Page 394 Range: 0.00 to 600.00 s in steps of 0.01  DPO TIME: 1.00 s PMU 1 df/dt TRG BLK: Range: FlexLogic operand  PMU 1 df/dt TRIGGER Range: Self-reset, Latched, Disabled  TARGET: Self-reset 5-180 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 395 “Automatic Overwrite,” the last record is erased to facilitate new recording, when triggered. Under the “Protected” selection, the recorder stops creating new records when the entire memory is used up by the old uncleared records. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-181...
Page 396 FlexLogic operands are updated, and the five-second timer restarts. This setting enables or disables the control. When enabled, all 16 operands for each aggregator are active; when disabled, all 16 operands for each aggregator remain reset. 5-182 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 397 ASDU at T-2 (previous values) + ASDU at T-1 (previous values) + ASDU at T0 (current values) ASDU at T-3 (previous values) + ASDU at T-2 (previous values) + ASDU at T-1 (previous values) + ASDU at T0 (current values) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-183...
Page 398 0 state, the remote client writes to the reserve bit, the SvEna is rejected by the UR, and a negative response with the appropriate Service Error is returned to the client. 5-184 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 399: Flexlogic
FlexLogic. In general, the system receives analog and digital inputs that it uses to produce analog and digital outputs. The figure shows major subsystems of a generic UR-series relay involved in this process. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-185...
Page 400 Figure 5-95: UR architecture overview The states of all digital signals used in the L30 are represented by flags (or FlexLogic operands, which are described later in this section). A digital “1” is represented by a set flag. Any external contact change-of-state can be used to block an element from operating, as an input to a control feature in a FlexLogic equation, or to operate a contact output.
Page 401 The following table lists the operands available for the relay. The operands can be viewed online by entering the IP address of the relay in a web browser and accessing the Device Information Menu. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-187...
Page 402 Exceeded maximum CRC error threshold on channel 2 87L DIFF CH1 ID FAIL The ID check for a peer L30 on channel 1 has failed 87L DIFF CH2 ID FAIL The ID check for a peer L30 on channel 2 has failed...
Page 403 Asserted when the broken conductor 1 element operates Broken conductor BROKEN CONDUCT 1 PKP Asserted when the broken conductor 1 element picks up BROKEN CONDUCT 2 Same set of operands as shown for BROKEN CONDUCTOR 1 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-189...
Page 404 Neutral instantaneous overcurrent 1 has operated instantaneous NEUTRAL IOC1 DPO Neutral instantaneous overcurrent 1 has dropped out overcurrent NEUTRAL IOC2 to 12 Same set of operands as shown for NEUTRAL IOC1 5-190 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 405 Phase B of phase time overcurrent 1 has dropped out PHASE TOC1 DPO C Phase C of phase time overcurrent 1 has dropped out PHASE TOC2 to 6 Same set of operands as shown for PHASE TOC1 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-191...
Page 406 Delta connected VT. SRC2 VT FUSE FAIL Same set of operands as shown for SRC1 VT FF ELEMENT: STUB BUS OP Stub bus is operated Stub bus 5-192 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 407 Logic = 0. Does nothing and can be used as a delimiter in an equation list; used as ‘Disable’ by other features. Logic = 1. Can be used as a test setting. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-193...
Page 408 LED PHASE C Asserted when phase C involved and to turn PHASE C LED on LED NEUTRAL/GROUND Asserted when a neutral or ground element involved and to turn NEUTRAL/ GROUND LED on 5-194 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 409 RESET ANCTR OP(OPRD) Reset operand (assigned in INPUTS/OUTPUTS  RESETTING ANNUNCIATOR menu) source of the reset annunciator command RESET ANCTR OP(MNUL) Reset manual (pushbutton or EnerVista software) source of the reset annunciator command L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-195...
Page 410 ‘1’ 2 to 16 all inputs are ‘1’ 2 to 16 all inputs are ‘0’ NAND 2 to 16 any input is ‘0’ only one input is ‘1’ 5-196 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 411: Flexlogic Rules
A timer operator (for example, "TIMER 1") or virtual output assignment (for example, " = Virt Op 1") can be used once only. If this rule is broken, a syntax error is declared. 5.6.3 FlexLogic evaluation Each equation is evaluated in the ascending order in which the parameters have been entered. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-197...
Page 412: Flexlogic Example
4, which is programmed in the contact output section to operate relay H1 (that is, contact output H1). Therefore, the required logic can be implemented with two FlexLogic equations with outputs of virtual output 3 and virtual output 4, shown as follows. 5-198 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 413 It is generally easier to start at the output end of the equation and work back towards the input, as shown in the following steps. It is also recommended L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-199...
Page 414 It is now possible to check that this selection of parameters produces the required logic by converting the set of parameters into a logic diagram. The result of this process is shown in the figure, which is compared to the logic for virtual output 3 diagram as a check. 5-200 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 415 Now check that the selection of parameters produce the required logic by converting the set of parameters into a logic diagram. The result is shown in the figure, which is compared to the logic for virtual output 4 diagram as a check. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-201...
Page 416 Always test the logic after it is loaded into the relay, in the same way as has been used in the past. Testing can be simplified by placing an "END" operator within the overall set of FlexLogic equations. The equations are evaluated up 5-202 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 417: Flexlogic Equation Editor
Range: Off, any analog actual value parameter  FLEXELEMENT 1 INPUT Range: SIGNED, ABSOLUTE  MODE: SIGNED FLEXELEMENT 1 COMP Range: LEVEL, DELTA  MODE: LEVEL FLEXELEMENT 1 Range: OVER, UNDER  DIRECTION: OVER L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-203...
Page 418 FLEXELEMENT 1 +IN this setting is set to “Off.” For proper operation of the element, at least one input must be selected. Otherwise, the element does not assert its output operands. 5-204 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 419 Figure 5-104: FlexElement direction, pickup, and hysteresis In conjunction with the setting, the element can be programmed to provide two extra FLEXELEMENT 1 INPUT MODE characteristics, as shown in the following figure. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-205...
Page 420 (Terminal 2 IA Mag, IB and IC) 87L SIGNALS BASE = Squared CT secondary of the 87L source (Op Square Curr IA, IB, and IC) (Rest Square Curr IA, IB, and IC) 5-206 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 421: Non-Volatile Latches
The non-volatile latches provide a permanent logical flag that is stored safely and do not reset upon restart after the relay is powered down. Typical applications include sustaining operator commands or permanently blocking relay functions, such as Autorecloser, until a deliberate interface action resets the latch. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-207...
Page 422: Grouped Elements
5.7.2 Setting group 1 SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  SETTING GROUP 1  LINE DIFFERENTIAL See below    ELEMENTS  PHASE CURRENT See page 5-214   5-208 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 423: Line Differential Elements
 RESTRAINT 2: 50% CURRENT DIFF Range: 0.0 to 20.0 pu in steps of 0.1  BREAK PT: 1.0 pu INRUSH INHIBIT MODE: Range: Disabled, Per phase, 2-out-of-3, Average  Disabled L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-209...
Page 424 If set to “Disabled”, no inrush inhibit action is taken. If set to “Per phase”, the L30 performs inrush inhibit individually in each phase. 5-210...
Page 425 CHAPTER 5: SETTINGS GROUPED ELEMENTS If set to “2-out-of-3,” the L30 checks second harmonic level in all three phases individually. If any two phases establish an inhibiting condition, then the remaining phase is restrained automatically. If set to “Average”, the L30 first calculates the average second harmonic ratio, then applies the inrush threshold to the calculated average.
Page 426 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-107: Current differential logic 5-212 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 427 It should be blocked unless disconnect is open. To prevent 87L tripping from remote L30 relays still protecting the line, assign the auxiliary contact of line disconnect switch (logic “1” when line switch is open) to block the local 87L function by using the setting.
Page 428: Phase Current
 DIRECTIONAL 2 5.7.4.2 Inverse TOC curve characteristics The inverse time overcurrent curves used by the time overcurrent elements are the IEEE, IEC, GE Type IAC, and I t standard curve shapes. This allows for simplified coordination with downstream devices.
Page 429 IEEE Very Inverse 8.090 3.514 1.471 0.899 0.654 0.526 0.450 0.401 0.368 0.345 16.179 7.028 2.942 1.798 1.308 1.051 0.900 0.802 0.736 0.689 32.358 14.055 5.885 3.597 2.616 2.103 1.799 1.605 1.472 1.378 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-215...
Page 430 4.012 2.521 1.992 1.712 1.535 1.411 1.319 1.247 1.188 0.60 10.317 6.017 3.781 2.988 2.568 2.302 2.117 1.978 1.870 1.782 0.80 13.755 8.023 5.042 3.984 3.424 3.070 2.822 2.637 2.493 2.376 5-216 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 431 A to E = constants defined in the table = characteristic constant defined in the table = reset time in seconds (assuming energy capacity is 100% and RESET is “Timed”) RESET Table 5-33: GE type IAC inverse time curve constants IAC curve shape IAC Extreme Inverse 0.0040 0.6379...
Page 432 0.490 0.455 0.434 0.419 0.409 0.401 0.394 10.0 1.431 0.948 0.699 0.613 0.569 0.542 0.524 0.511 0.501 0.493 t curves The I t curves are derived as follows: Eq. 5-17 where 5-218 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 433 T = Operate Time (in seconds) TDM = Multiplier setting I = Input Current = Pickup Current setting pickup = Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed) RESET L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-219...
Page 434 GROUPED ELEMENTS CHAPTER 5: SETTINGS Recloser curves The L30 uses the FlexCurve feature to facilitate programming of 41 recloser curves. See the FlexCurves settings section earlier in this chapter for details. 5.7.4.3 Phase time overcurrent (ANSI 51P, IEC PTOC) SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  PHASE CURRENT  PHASE TOC1(6) ...
Page 435 — Selects the signal source for the phase time overcurrent protection element. SIGNAL SOURCE — Selects how phase current input quantities are interpreted by the L30. Inputs can be selected as fundamental INPUT phasor magnitudes or total waveform RMS magnitudes as required by the application.
Page 436 PHASE IOC1 BLOCK A: Range: FlexLogic operand   PHASE IOC1 BLOCK C: Range: FlexLogic operand  PHASE IOC1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset PHASE IOC1 Range: Disabled, Enabled  EVENTS: Disabled 5-222 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 437 Range: 0.004 to 3.000 pu in steps of 0.001  THRESHOLD: 0.700 pu PHASE DIR 1 BLOCK Range: No, Yes  WHEN V MEM EXP: No PHASE DIR 1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-223...
Page 438 (phase current) and the polarizing signal (the line voltage, shifted in the leading direction by the characteristic angle, ECA). The table shows the operating and polarizing signals used for phase directional control. 5-224 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 439 When set to "No," the directional element allows tripping of phase overcurrent elements under directional control. — This setting enables and disables the logging of phase directional overcurrent events in the PHASE DIR 1 EVENTS sequence of events recorder. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-225...
Page 440: Neutral Current
 NEUTRAL TOC 1 See below      NEUTRAL TOC 6    NEUTRAL IOC 1 See page 5-228     NEUTRAL IOC 12   5-226 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 441 — This setting selects the signal source for the neutral time overcurrent protection element. NEUTRAL TOC1 SIGNAL SOURCE — This setting selects how neutral current input quantities are interpreted by the L30. Inputs can be NEUTRAL TOC1 INPUT selected as fundamental phasor magnitudes or total waveform RMS magnitudes as required by the application.
Page 442 The positive-sequence restraint allows for more sensitive settings by counterbalancing spurious zero-sequence currents resulting from: • System unbalances under heavy load conditions • Transformation errors of current transformers (CTs) during double-line and three-phase faults • Switch-off transients during double-line and three-phase faults 5-228 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 443 VOLT: Calculated V0 NEUTRAL DIR OC1 OP Range: Calculated 3I0, Measured IG  CURR: Calculated 3I0 NEUTRAL DIR OC1 POS- Range: 0.000 to 0.500 in steps of 0.001  SEQ RESTRAINT: 0.063 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-229...
Page 444 The following tables define the neutral directional overcurrent element. V_0 is the zero-sequence voltage, I_0 is the zero-sequence current, ECA is the element characteristic angle, and IG is the ground current. 5-230 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 445 REV LA = 80° (reverse limit angle = the ± angular limit with the ECA for operation) Take the bias into account when using the neutral directional overcurrent element to directionalize other protection elements. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-231...
Page 446 For example, if using an autotransformer neutral current as a polarizing source, ensure that a reversal of the ground current does not occur for a high-side fault. Assume that the 5-232 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 447 — This setting defines the pickup level for the overcurrent unit of the element in the reverse NEUTRAL DIR OC1 REV PICKUP direction. When selecting this setting, keep in mind that the design uses a positive-sequence restraint technique for the “Calculated 3I0” mode of operation. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-233...
Page 448: Ground Current
 GROUND CURRENT  GROUND TOC1 See below      GROUND TOC6    GROUND IOC1 See page 5-236     GROUND IOC12   5-234 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 449 — This setting selects the signal source for the ground time overcurrent protection element. GROUND TOC1 SIGNAL SOURCE — This setting selects how ground current input quantities are interpreted by the L30. Inputs can be GROUND TOC1 INPUT selected as fundamental phasor magnitudes or total waveform RMS magnitudes as required by the application.
Page 450 These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion range of a standard channel is from 0.02 to 46 times the CT rating. 5-236 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 451: Negative Sequence Current
Range: Instantaneous, Timed  RESET: Instantaneous NEG SEQ TOC1 BLOCK: Range: FlexLogic operand  NEG SEQ TOC1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset NEG SEQ TOC1 Range: Disabled, Enabled  EVENTS: Disabled L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-237...
Page 452 (12.5%) of the positive-sequence current magnitude is subtracted from the negative-sequence current magnitude when forming the operating quantity. = |I_2| - K x |I_1| where K = 1/8 Eq. 5-25 5-238 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 453: Breaker Failure (Ansi 50Bf)
Range: 0.020 to 30.000 pu in steps of 0.001  PICKUP: 1.050 pu BF1 N AMP SUPV Range: 0.020 to 30.000 pu in steps of 0.001  PICKUP: 1.050 pu BF1 USE TIMER 1: Range: Yes, No  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-239...
Page 454 Valid only for 1-Pole breaker failure schemes φ BF1 BKR POS2 Range: FlexLogic operand  Valid only for 1-Pole breaker failure schemes φ BF1 BKR POS2 Range: FlexLogic operand  Valid only for 1-Pole breaker failure schemes 5-240 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 455 There is no current level check in this logic as it is intended to detect low magnitude faults and it is therefore the slowest to operate. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-241...
Page 456 — This setting is used to select the breaker failure operating mode: single or three pole. BF1 MODE — If set to "Yes," the element is initiated if current flowing through the breaker is above the supervision BF1 USE AMP SUPV pickup level. 5-242 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 457 In microprocessor relays this time is not significant. In L30 relays, which use a Fourier transform, the calculated current magnitude ramps-down to zero one power frequency cycle after the current is interrupted, and this lag needs to be included in the overall margin duration, as it occurs after current interruption.
Page 458 Upon operation of the breaker failure element for a single pole trip command, a three-pole trip command needs to be given via output operand BKR FAIL 1 TRIP 5-244 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 459 CHAPTER 5: SETTINGS GROUPED ELEMENTS Figure 5-124: Single-pole breaker failure initiate logic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-245...
Page 460 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-125: Single-pole breaker failure, timers logic 5-246 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 461 CHAPTER 5: SETTINGS GROUPED ELEMENTS Figure 5-126: Three-pole breaker failure, initiate logic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-247...
Page 462 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-127: Three-pole breaker failure, timers logic 5-248 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 463: Voltage Elements
The time delay is adjustable from 0 to 600.00 seconds in steps of 0.01. The undervoltage elements can also be programmed to have an inverse time delay characteristic. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-249...
Page 464 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s PHASE UV1 MINIMUM Range: 0.000 to 3.000 pu in steps of 0.001  VOLTAGE: 0.100 pu PHASE UV1 BLOCK: Range: FlexLogic operand  5-250 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 465 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s PHASE OV1 BLOCK: Range: FlexLogic Operand  PHASE OV1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset PHASE OV1 Range: Disabled, Enabled  EVENTS: Disabled L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-251...
Page 466 Range: 0.00 to 600.00 s in steps of 0.01  DELAY: 1.00 s NEUTRAL OV1 BLOCK: Range: FlexLogic operand  NEUTRAL OV1 TARGET: Range: Self-reset, Latched, Disabled  Self-reset NEUTRAL OV1 EVENTS: Range: Disabled, Enabled  Disabled 5-252 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 467 There are three negative-sequence overvoltage elements available. Use the negative-sequence overvoltage element to detect loss of one or two phases of the source, a reversed phase sequence of voltage, or a non-symmetrical system voltage condition. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-253...
Page 468 Range: Disabled, Enabled  Disabled The L30 contains one auxiliary undervoltage element for each VT bank. This element monitors undervoltage conditions of the auxiliary voltage. selects the voltage level at which the time undervoltage element starts timing. The nominal secondary...
Page 469 Range: Disabled, Enabled  Disabled The L30 contains one auxiliary overvoltage element for each VT bank. This element is intended for monitoring overvoltage conditions of the auxiliary voltage. The nominal secondary voltage of the auxiliary voltage channel entered under SYSTEM is the per-unit (pu) base used when setting the SETUP ...
Page 470: Supervising Elements
(I_0), the change in negative-sequence current (DI_2), the change in zero-sequence current (DI_0), and the change in positive-sequence current (DI_1). The disturbance detector element uses net local current, computed as 5-256 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 471 — This setting can be disabled when the disturbance detector element responds to any current disturbance on DD EVENTS the system that results in filling the events buffer and possible loss of valuable data. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-257...
Page 472 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-135: Disturbance detector logic 5-258 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 473: Control Elements
If more than one operate-type operand is required, it can be assigned directly from the trip bus menu. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-259...
Page 474 TRIP BUS 1 RESET RESET OP operand is pre-wired to the reset gate of the latch, As such, a reset command from the front panel interface or via communications resets the trip bus output. 5-260 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 475: Setting Groups
Prevents the active setting group from changing when the selected FlexLogic operand is "On." This SETTING GROUPS BLK — can be useful in applications where it is undesirable to change the settings under certain conditions, such as during a control sequence. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-261...
Page 476: Selector Switch
SELECTOR 1 TIME-OUT: Range: 3.0 to 60.0 s in steps of 0.1  5.0 s SELECTOR 1 STEP-UP: Range: FlexLogic operand  SELECTOR 1 STEP-UP Range: Time-out, Acknowledge  MODE: Time-out 5-262 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 477 (“Acknowledge” mode). When the new position is applied, the relay displays the SELECTOR SWITCH 1: POSITION Z IN USE message. Typically, a user-programmable pushbutton is configured as the stepping up control input. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-263...
Page 478 (that is, the three-bit input is not available (0,0,0) or out of range), then the selector switch output is set to position 0 (no output operand selected) and an alarm is established ( SELECTOR 1 PWR ALARM 5-264 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 479 The selector position pre-selected via the three-bit control input has not been confirmed before the time The following figures illustrate the operation of the selector switch. In these diagrams, “T” represents a time-out setting. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-265...
Page 480 CONTROL ELEMENTS CHAPTER 5: SETTINGS Figure 5-139: Time-out mode 5-266 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 481 1 through 3. The pre-selected setting group is to be applied automatically after five seconds of inactivity of the control inputs. When the relay powers up, it is to synchronize the setting group to the three-bit control input. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-267...
Page 482 SETTINGS  PRODUCT menu: SETUP  USER-PROGRAMMABLE PUSHBUTTONS  USER PUSHBUTTON 1 : “Self-reset” PUSHBUTTON 1 FUNCTION : “0.10 s” PUSHBUTTON 1 DROP-OUT TIME The figure shows the logic for the selector switch. 5-268 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 483: Underfrequency (Ansi 81U)
DELAY : 2.000 s UNDERFREQ 1 TARGET: Range: Self-reset, Latched, Disabled  Self-reset UNDERFREQ 1 EVENTS: Range: Disabled, Enabled  Disabled There are six identical underfrequency elements, numbered 1 through 6. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-269...
Page 484: Frequency Rate Of Change (Ansi 81R)
FREQ RATE 1 PICKUP Range: 0 to 65.535 s in steps of 0.001  DELAY: 0.000 s FREQ RATE 1 RESET Range: 0 to 65.535 s in steps of 0.001  DELAY: 0.000 s 5-270 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 485 (such as for load shedding), set this setting to the required frequency level. If the signal source assigned to the frequency rate of change element is only set to auxiliary VT, then the minimum voltage supervision is 3 V. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-271...
Page 486: Synchrocheck (Ansi 25)
DIFF: 10000 V SYNCHK1 MAX ANGLE Range: 0 to 100° in steps of 1  DIFF: 30° SYNCHK1 MAX FREQ Range: 0.00 to 2.00 Hz in steps of 0.01  DIFF: 1.00 Hz 5-272 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 487 — This setting selects the source for voltage V1 (see the Notes section that follows). SYNCHK1 V1 SOURCE — Selects the source for voltage V2, which must not be the same as used for the V1 (see Notes). SYNCHK1 V2 SOURCE L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-273...
Page 488 V2 magnitude can be directly compared with V1 magnitude. For example, when V1 and V2 are taken from 2 different windings of the transformer and at different voltage levels, the magnitude compensation must be performed before starting magnitude comparison in synchrocheck element. 5-274 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 489 The relay uses the phase channel of a three-phase set of voltages if programmed as part of that source. The relay uses the auxiliary voltage channel only if that channel is programmed L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-275...
Page 490 CONTROL ELEMENTS CHAPTER 5: SETTINGS as part of the Source and a three-phase set is not. 5-276 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 491 CHAPTER 5: SETTINGS CONTROL ELEMENTS Figure 5-146: Synchrocheck logic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-277...
Page 492: Autoreclose (Ansi 79)
 AR1 DELAY 2: Range: 0.00 to 655.35 s in steps of 0.01  0.000 s AR1 RESET LOCKOUT Range: 0.00 to 655.35 s in steps of 0.01  DELAY: 60.000 5-278 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 493  Disabled The L30 is provided with this optional feature, specified as an option at the time of ordering. Using the order code for your device, see the order codes in chapter 2 for details. The maximum number of autoreclosure elements available is equal to the number of installed CT banks.
Page 494 "reclose-in-progress" state. If all conditions allowing a breaker closure are not satisfied when this time expires, the scheme goes to Lockout. This timer must be set to a delay less than the reset timer. 5-280 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 495 CHAPTER 5: SETTINGS CONTROL ELEMENTS Figure 5-147: Autoreclosure logic (Sheet 1 of 2) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-281...
Page 496 CONTROL ELEMENTS CHAPTER 5: SETTINGS Figure 5-148: Autorecloser logic (Sheet 2 of 2) 5-282 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 497 CHAPTER 5: SETTINGS CONTROL ELEMENTS Figure 5-149: Single shot autoreclosing sequence - permanent fault L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-283...
Page 498: Digital Elements
DIGITAL ELEMENT 1 RESET DELAY — This setting enables or disabled the digital element pickup LED. When set to “Disabled,” the DIGITAL ELEMENT 1 PICKUP LED operation of the pickup LED is blocked. 5-284 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 499 In most breaker control circuits, the trip coil is connected in series with a breaker auxiliary contact that is open when the breaker is open (see figure). To prevent unwanted alarms in this situation, the trip circuit monitoring logic must include the breaker position. Figure 5-151: Trip circuit example 1 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-285...
Page 500 In this case, it is not required to supervise the monitoring circuit with the breaker position – the setting is BLOCK selected to “Off.” In this case, the settings are as follows (EnerVista example shown). 5-286 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 501: Digital Counters
Range: FlexLogic operand  CNT1 SET TO PRESET: Range: FlexLogic operand  COUNTER 1 RESET: Range: FlexLogic operand  COUNT1 FREEZE/RESET: Range: FlexLogic operand  COUNT1 FREEZE/COUNT: Range: FlexLogic operand  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-287...
Page 502 If control power is interrupted, the accumulated and frozen values are saved into non-volatile memory during the power-down operation. 5-288 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 503: Monitoring Elements
 VT FUSE FAILURE 1 See page 5-296    VT FUSE FAILURE 2    THERMAL OVERLOAD See page 5-298   PROTECTION  BROKEN CONDUCTOR See page 5-301   L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-289...
Page 504 — Selects the threshold value above which the output operand is set. BKR 1 ARC AMP LIMIT 5-290 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 505 -cycle) and AMP MAX (kA) values of the last event. — This setting specifies the maximum symmetrical interruption rating of the circuit breaker. BKR 1 INTERUPTION RATING Figure 5-154: Arcing current measurement L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-291...
Page 506 CONTROL ELEMENTS CHAPTER 5: SETTINGS Figure 5-155: Breaker arcing current logic 5-292 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 507 CT FAIL 1 3V0 INPUT — Specifies the pickup value for the 3V_0 source. CT FAIL 1 3V0 INPUT PICKUP — Specifies the pickup delay of the CT failure element. CT FAIL 1 PICKUP DELAY L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-293...
Page 508 RESET DELAY: 0.100 s INCIPIENT FAULT 1 Range: Self-reset, Latched, Disabled  TARGET: Self-reset INCIPIENT FAULT 1 Range: Disabled, Enabled  EVENTS: Disabled There is one incipient cable fault detection element. 5-294 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 509 — Selects a current source for the incipient cable fault detector element. This source must be INCIPIENT FAULT 1 SOURCE assigned a valid CT bank. — Specifies the pickup level of the overcurrent detector in per-unit values of the CT nominal INCIPIENT FAULT 1 PICKUP current. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-295...
Page 510 B failures is when positive sequence current is present and there is an insignificant amount of positive sequence voltage. Also, a rapid decrease in the phase voltages magnitude from a healthy 5-296 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 511 PHASE VT SECONDARY of DELTA VTs. The setting is found under SETTINGS  SYSTEM SETUP  AC INPUTS  VOLTAGE BANK  PHASE VT SECONDARY Figure 5-159: VT fuse fail logic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-297...
Page 512 I = measured overload RMS current = measured load RMS current before overload occurs k = IEC 255-8 k-factor applied to I , defining maximum permissible current above nominal current = protected element base (nominal) current 5-298 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 513 The reset time of the thermal overload protection element is also time delayed using following formula: Eq. 5-30 where τ = thermal protection trip time constant = a minimum reset time setting Figure 5-160: IEC 255-8 sample operate and reset curves L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-299...
Page 514 20 minutes Air-core reactor 40 minutes 30 minutes Busbar 60 minutes 20 minutes Underground cable 20 to 60 minutes 60 minutes The figure shows the logic for the thermal overload protection element. 5-300 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 515 It also monitors changes in the I_2 / I_1 ratio, I_1 minimum, and I_1 maximum. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-301...
Page 516 — This setting specifies the pickup time delay for this function to operate after assertion BROKEN CONDUCTOR 1 PKP DELAY of the broken conductor pickup FlexLogic operand. 5-302 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 517 CHAPTER 5: SETTINGS CONTROL ELEMENTS Figure 5-162: Broken conductor detection logic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-303...
Page 518: Inputs/Outputs
The DC input voltage is compared to a user-settable threshold. A new contact input state must be maintained for a user-settable debounce time in order for the L30 to validate the new contact state. In the following figure, the debounce time is set at 2.5 ms;...
Page 519 For example, to use contact input H5a as a status input from the breaker 52b contact to seal-in the trip relay and record it in the Event Records menu, make the following settings changes: L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-305...
Page 520: Virtual Inputs
FlexLogic equation, it likely needs to be lengthened in time. A FlexLogic timer with a delayed reset can perform this function. Figure 5-164: Virtual inputs logic 5-306 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 521: Contact Outputs
: any suitable FlexLogic operand OUTPUT H1 OPERATE “Cont Op 1 OUTPUT H1 SEAL-IN IOn” : “Enabled” CONTACT OUTPUT H1 EVENTS Figure 5-165: Contact input/output module type 6A contact 1 logic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-307...
Page 522 Figure 5-166: Contact input/output module type 4L contact 1 logic Application example 1 A latching output contact H1a is to be controlled from two user-programmable pushbuttons (buttons number 1 and 2). The following settings are applied. 5-308 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 523 (assuming an H4L module): OUTPUTS  CONTACT OUTPUT H1a CONTACT OUTPUT H1c : “VO1” OUTPUT H1a OPERATE : “VO4” OUTPUT H1a RESET : “VO2” OUTPUT H1c OPERATE : “VO3” OUTPUT H1c RESET L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-309...
Page 524: Virtual Outputs
VIRTUAL OUTPUT 1 ID : "Disabled" VIRTUAL OUTPUT 1 EVENTS 5.9.5 Resetting 5.9.5.1 Enhanced and standard front panels SETTINGS  INPUTS/OUTPUTS  RESETTING  RESETTING RESET OPERAND: Range: FlexLogic operand   5-310 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 525: Direct Inputs And Outputs
1-1 to 1-8 at channel 1 and direct inputs 2-1 to 2-8 at channel 2. Therefore, to take advantage of redundancy, the respective operands from channel 1 and 2 can be ORed with FlexLogic or mapped separately. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-311...
Page 526 FlexLogic operand. The settings are used to select the operand that represents a specific function (as selected by the user) to be transmitted. Direct outputs 2-1 to 2-8 are functional in three-terminal systems. 5-312 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 527: Transducer Inputs/Outputs
VALUE: 0.000 The L30 is provided with optional DCmA capability. This feature is specified as an option at the time of ordering. See the Order Codes section in chapter 2 for details. Hardware and software are provided to receive signals from external transducers and to convert these signals into a digital format for use as required.
Page 528: Rtd Inputs
1.5 pu. FlexElement operands are available to FlexLogic for further interlocking or to operate an output contact directly. See the following table for reference temperature values for each RTD type. 5-314 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 529: Dcma Outputs
Range: –90.000 to 90.000 pu in steps of 0.001  MIN VAL: 0.000 pu DCMA OUTPUT H1 Range: –90.000 to 90.000 pu in steps of 0.001  MAX VAL: 1.000 pu L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-315...
Page 530 — This setting allows selection of the output range. Each DCmA channel can be set independently DCMA OUTPUT H1 RANGE to work with different ranges. The three most commonly used output ranges are available. 5-316 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 531 The CT ratio is 5000:5 and the maximum load current is 4200 A. The current is to be monitored from 0 A upwards, allowing for 50% overload. The phase current with the 50% overload margin is: Eq. 5-39 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-317...
Page 532 ±0.5% of the full scale for the analog output module, or ± 0.005 x (1-0) x 254.03 kV = ±1.27 kV • ±0.5% of reading For example, under nominal conditions, the positive-sequence reads 230.94 kV and the worst-case error is 0.005 × 230.94 kV + 1.27 kV = 2.42 kV. 5-318 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 533: Testing
 FUNCTION: Disabled The L30 provides a test facility to verify the functionality of contact inputs and outputs, some communication functions and the phasor measurement unit (where applicable), using simulated conditions. The test mode can be in any of three states: Disabled, Isolated, or Forcible.
Page 534: Phasor Measurement Unit Test Values
PMU 1 IC TEST Range: –180.00 to 180.00° in steps of 0.05  ANGLE: 110.00° PMU 1 IG TEST Range: 0.000 to 9.999 kA in steps of 0.001  MAGNITUDE: 0.000 kA 5-320 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 535: Force Contact Inputs
5.11.5 Force contact outputs SETTINGS  TESTING  FORCE CONTACT OUTPUTS  FORCE CONTACT FORCE Cont Op 1 Range: Normal, Energized, De-energized, Freeze   OUTPUTS : Normal L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-321...
Page 536: Channel Tests
 REMOTE LOOPBACK REMOTE LOOPBACK Range: Yes, No  FUNCTION: No  REMOTE LOOPBACK Range: 1, 2  CHANNEL NUMBER: 1 See the Commissioning chapter for information on using the channel tests. 5-322 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 537: Actual Values
 RxGOOSE STATUS See page 6-5    RxGOOSE See page 6-6   STATISTICS  CHANNEL TESTS See page 6-6    DIGITAL COUNTERS See page 6-7   L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 538  RTD INPUTS  ACTUAL VALUES  FAULT REPORT See page 6-25   RECORDS   EVENT RECORDS See page 6-25     OSCILLOGRAPHY See page 6-27   L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 539: Front Panel
The feature applies to the enhanced and standard front panels. To view the front panel in EnerVista software: Click Actual Values > Front Panel. Figure 6-1: Front panel use in the software (C60 shown) L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 540: Status
Range: On, Off  STATUS: Off The L30 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. 6.3.4 RxGOOSE DPS inputs ACTUAL VALUES ...
Page 541: Contact Outputs
CHAPTER 6: ACTUAL VALUES STATUS The L30 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. 6.3.5 Contact outputs ACTUAL VALUES ...
Page 542: Rxgoose Statistics
STATUS CHAPTER 6: ACTUAL VALUES The L30 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. actual value does not consider RxGOOSE that are not configured or are not used by any RxGOOSE All RxGOOSE Online Input.
Page 543: Digital Counters
PFLL is disabled. 6.3.11 Digital counters ACTUAL VALUES  STATUS  DIGITAL COUNTERS  DIGITAL COUNTERS Counter 1(8)  DIGITAL COUNTERS Counter 1 ACCUM:   Counter 1 Counter 1 FROZEN:  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 544: Selector Switches
ACTUAL VALUES  STATUS  REAL TIME CLOCK SYNCHRONIZING  REAL TIME CLOCK RTC SYNC SOURCE: Range: see below   SYNCHRONIZING None GRANDMASTER ID: Range: any 8 octet value  0X0000000000000000 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 545: Direct Inputs
1 or 2 has been declared to have “failed”, in which case the value shown is the programmed default state defined in the menu. SETTINGS  INPUTS/OUTPUTS  DIRECT  DIRECT INPUTS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 546: Incipient Fault Detector
The Parallel Redundancy Protocol (PRP) defines a redundancy protocol for high availability in substation automation networks. ACTUAL VALUES  STATUS  PRP STATUS  PRP STATUS Total Rx Port A: Range: 0 to 4G, blank if PRP disabled   6-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 547: Txgoose Status
Range: 0 to 4G, blank if PRP disabled  The L30 is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details.
Page 548: Metering
METERING CHAPTER 6: ACTUAL VALUES 6.4 Metering 6.4.1 Metering conventions 6.4.1.1 UR conventions for measuring power and energy The figure illustrates the conventions established for use in UR devices. 6-12 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 549 6.4.1.2 UR convention for measuring phase angles All phasors calculated by URs and used for protection, control and metering functions are rotating phasors that maintain the correct phase angle relationships with each other at all times. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-13...
Page 550 For display and oscillography purposes the phase angles of symmetrical components are referenced to a common reference as described in the previous sub-section. WYE-connected instrument transformers • ABC phase rotation: • ACB phase rotation: The above equations apply to currents as well. 6-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 551 * The power system voltages are phase-referenced – for simplicity – to V and V , respectively. This, however, is a relative matter. It is important to remember that the L30 displays are always referenced as specified under SETTINGS  SYSTEM SETUP  POWER SYSTEM  FREQUENCY AND PHASE REFERENCE The example above is illustrated in the following figure.
Page 552: Differential Current
Terminal 1 refers to the communication channel 1 interface to a remote L30 at terminal 1. Terminal 2 refers to the communication channel 2 interface to a remote L30 at terminal 2.
Page 553: Sources
SRC 1 PHASOR Ib:  0.000 A 0.0° SRC 1 PHASOR Ic:  0.000 A 0.0° SRC 1 PHASOR In:  0.000 A 0.0° SRC 1 ZERO SEQ I0:  0.000 A 0.0° L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-17...
Page 554 SRC 1 PHASOR Vab:  0.000 V 0.0° SRC 1 PHASOR Vbc:  0.000 V 0.0° SRC 1 PHASOR Vca:  0.000 V 0.0° SRC 1 ZERO SEQ V0:  0.000 V 0.0° 6-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 555 φa: 0.000 VA SRC 1 APPARENT PWR  φb: 0.000 VA SRC 1 APPARENT PWR  φc: 0.000 VA SRC 1 POWER FACTOR  3φ: 1.000 SRC 1 POWER FACTOR  φa: 1.000 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-19...
Page 556 S = V x Î x Î x Î Eq. 6-1 When VTs are configured in delta, the L30 does not calculate power in each phase and three-phase power is measured as S = V x Î x Î Eq. 6-2...
Page 557: Synchrocheck
ACTUAL VALUES  METERING  SYNCHROCHECK  SYNCHROCHECK 1(4)  SYNCHROCHECK 1 SYNCHROCHECK 1 DELTA   VOLT: 0.000 kV SYNCHROCHECK 1 DELTA  FREQ: 0.00 Hz SYNCHROCHECK 1  DELTA PHASE: 0.0° SYNCHROCHECK 1  SYNSCP D_PH: 0.0° L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-21...
Page 558: Tracking Frequency
(CT primary for source currents, and 87L source primary current for line differential currents) (Diff Curr IA Mag, IB, and IC) (Terminal 1 IA Mag, IB, and IC) (Terminal 2 IA Mag, IB and IC) 6-22 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 559: Rxgoose Analogs
 0.000 The L30 is provided with optional GOOSE communications capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. The RxGOOSE Analog values display in this menu. The RxGOOSE Analog values are received via IEC 61850 GOOSE messages sent from other devices.
Page 560: Pmu Aggregator
Actual values for each DCmA input channel that is enabled are displayed with the top line as the programmed channel ID and the bottom line as the value followed by the programmed units. 6-24 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 561: Records
VT to display the loop impedance and fault resistance for single phase-to-ground faults. 6.5.2 Event records 6.5.2.1 Enhanced and standard front panels ACTUAL VALUES  RECORDS  EVENT RECORDS  EVENT RECORDS EVENT: XXX    Date and time stamps L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-25...
Page 562 (highlight in yellow), then press the green or cyan Mark Event Tab pushbutton. The mark color hides the selector until the selector is moved. A field at the top of the page shows the interval between the two marks. 6-26 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 563: Oscillography
It counts up at the defined sampling NEWEST SAMPLE TIME rate. If the data logger channels are defined, then both values are static. See the menu for clearing data logger records. COMMANDS  CLEAR RECORDS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-27...
Page 564: Phasor Measurement Unit Records
BKR 1 ARCING AMP φC:  0.00 kA2-cyc BKR 1 AMP MAX φA:  0.00 kA BKR 1 AMP MAX φB:  0.00 kA BKR 1 AMP MAX φC:  0.00 kA 6-28 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 565: Product Information
6.6.2.1 Enhanced and standard front panels ACTUAL VALUES  PRODUCT INFO  FIRMWARE REVISIONS  FIRMWARE REVISIONS L30 Relay Range: 0.00 to 655.35  REVISION: 7.6x Revision number of the application firmware.  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-29...
Page 566 The shown data is illustrative only. A modification file number of 0 indicates that, currently, no modifications have been installed. The date format reflects the format specified for the clock and can vary from that shown here. 6-30 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 567: Commands And Targets
The commands menu contains relay directives intended for operations personnel. All commands can be protected from unauthorized access via the command password; see the Security section of chapter 5 for details. The following flash message appears after successfully command entry. COMMAND EXECUTED L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 568: Virtual Inputs
This menu contains commands for clearing historical data such as the event records. Data is cleared by changing a command setting to “Yes” and pressing the key. After clearing data, the command setting automatically reverts to ENTER “No.” L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 569: Set Date And Time
Range: No, Yes  TEST? No UPDATE ORDER CODE? Range: No, Yes  REBOOT RELAY? Range: No, Yes  SERVICE COMMAND Range: 0, 101  SAVE VOLATILE DATA? Range: No, Yes  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 570: Phasor Measurement Unit One-Shot
Although the diagnostic information is cleared before the L30 is shipped from the factory, the user can want to clear the diagnostic information for themselves under certain circumstances. For example, you clear diagnostic information after replacement of hardware. Once the diagnostic information is cleared, all self-checking variables are reset to their initial state and diagnostics restart from scratch.
Page 571 30 seconds afterwards PMU ONE-SHOT OP When the function is disabled, all three operands are de-asserted. The one-shot function applies to all logical PMUs of a given L30 relay. Figure 7-1: PMU one-shot FlexLogic operands 7.1.5.1 Testing accuracy of the PMU The one-shot feature is used to test accuracy of the synchrophasor measurement.
Page 572: Targets Menu
OPERATOR LOGOFF — Selecting ‘Yes’ allows the Supervisor to forcefully clear all the security logs and clears all the CLEAR SECURITY DATA operands associated with the self-tests. 7.2 Targets menu TARGETS  L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 573: Target Messages
A target enables the EnerVista UR Setup software to monitor automatically and display the status of any active target messages of all the devices inserted into that site. Each L30 element with a TARGET setting has a target message that when activated by its element is displayed in sequence with any other currently active target messages in the menu.
Page 574 Contact Factory (xxx) • Latched target message: Yes. • Description of problem: One or more installed hardware modules is not compatible with the L30 order code. • How often the test is performed: Module dependent. • What to do: Contact the factory and supply the failure code noted in the display. The “xxx” text identifies the failed module (for example, F8L).
Page 575 Proper cable functionality (that is, check for physical damage or perform a continuity test). – The IRIG-B receiver is functioning. – Check the input signal level (it can be less than specification). If none of these apply, then contact the factory. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 576 What to do: Verify that the setting change was legitimate and essential for proper functioning of the protection and control system. MAINTENANCE ALERT: Front Panel Trouble • Latched target message: No. • Description of problem: The front panel is not communicating with the CPU module. 7-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 577 Description of problem: The ambient temperature is greater than the maximum operating temperature (+80°C). • How often the test is performed: Every hour. • What to do: Remove the L30 from service and install in a location that meets operating temperature standards. UNEXPECTED RESTART: Press “RESET” key •...
Page 578 V-type CPU = All ports support RJ45 SFPs only The consequence of an incorrect SFP can range from damage to the L30 to no power information for the L30 on its web page (enter IP address in a web browser, then click the SFP Transceiver Information. Only the type of SFP displays and not power data).
Page 579 What to do: Check all modules against the order code. Ensure they are inserted properly, and cycle the control power. If a module has intentionally been added or removed use the Update Order Code command to notify the relay that the current module configuration is correct. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 7-13...
Page 580 Description of problem: Brick internal self-testing has detected trouble internal to the Brick. • Severity: This self-test error does not directly inhibit protection. However, some or all of the affected Brick inputs/ outputs may not be available to the UR device. 7-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 581 A latched target can be unlatched by pressing the front panel reset key if the command has ended, however the output can still be non-functional. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 7-15...
Page 582 TARGETS MENU CHAPTER 7: COMMANDS AND TARGETS 7-16 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 583: Application Of Settings
As per the IEEE C37.110-2007 "Guide for the Application of Current Transformers Used for Protective Relaying Purposes," the CT must be capable of a secondary saturation voltage V to avoid DC saturation: Eq. 8-2 where L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 584: Ct Saturation Analysis Tool
8.1.2 CT saturation analysis tool The CT saturation analysis tool is an Excel spreadsheet provided for users to analyze the L30 reliability during CT saturation caused by an external fault, to investigate the effect of adjusting 87L settings, and to examine the possibility of reducing the CT requirement.
Page 585: Current Differential (87L) Settings
8.2 Current differential (87L) settings 8.2.1 Introduction Software is available from the GE Digital Energy website that is helpful in selecting settings for the specific application. Checking the performance of selected element settings with respect to known power system fault parameters makes it relatively simple to choose the optimum settings for the application.
Page 586: Current Differential Pickup
CHAPTER 8: APPLICATION OF SETTINGS This software program is also useful for establishing test parameters. It is strongly recommended this program be downloaded. Look for the "L90 Test Tool" on the GE Grid Solutions website, for example in the L90 support documents at http://www.gegridsolutions.com/support/l90.htm...
Page 587 For relay 1, channel 1 communicates to relay 2 and channel 2 communicates to relay 3 • For relay 2, channel 1 communicates to relay 1 and channel 2 communicates to relay 3 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 588: Channel Asymmetry Compensation Using Gps
8.3 Channel asymmetry compensation using GPS 8.3.1 Introduction As indicated in the Settings chapter, the L30 provides three basic methods of applying channel asymmetry compensation using GPS. Channel asymmetry can also be monitored with actual values and an indication signalled (FlexLogic operands asserted) if channel asymmetry exceeds preset values.
Page 589: Compensation Method 2
CHANNEL ASYMMETRY COMPENSATION USING GPS If GPS is enabled at all terminals and the GPS signal is present, the L30 compensates for the channel asymmetry. On the loss of the GPS signal, the L30 stores the last measured value of the channel asymmetry per channel and compensates for the asymmetry until the GPS clock is available.
Page 590: Compensation Method 3
Create FlexLogic similar to that shown as follows to switch the 87L element to Settings Group 2 (with most sensitive settings) if the L30 has a valid GPS time reference. If a GPS or 87L communications failure occurs, the L30 switches back to Settings Group 1 with less sensitive settings.
Page 591: Instantaneous Elements
8.4.1 Instantaneous element error during L30 synchronization Two or three L30 relays are synchronized to each other and to system frequency to provide digital differential protection and accurate measurements for other protection and control functions. When an L30 system starts up, the relays adjust their frequency aggressively to bring all relays into synchronization with the system quickly.
Page 592 INSTANTANEOUS ELEMENTS CHAPTER 8: APPLICATION OF SETTINGS Element Maximum error on startup (operate Recommended block duration signal vs. setting) Phase instantaneous overcurrent 0.5 seconds 8-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 593: Commissioning
64 Kbaud in a transparent synchronous mode with automatic synchronous character detection and CRC insertion. The Local Loopback Channel Test verifies the L30 communication modules are working properly. The Remote Loopback Channel Test verifies the communication link between the relays meets requirements (BER less than 10–4). All tests are verified by using the internal channel monitoring and the monitoring in the Channel Tests.
Page 594: Clock Synchronization Tests
ACTUAL VALUES  STATUS  CHANNEL TESTS  CHANNEL 1(2) STATUS : “n/a” ACTUAL VALUES  STATUS  CHANNEL TESTS  REMOTE LOOPBACK STATUS : “OK” ACTUAL VALUES  STATUS  CHANNEL TESTS  PFLL STATUS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 595: Current Differential
Minimum pickup test with local current only: 3.1. Ensure that all 87L setting are properly entered into the relay and connect a test set to the relay to inject current into Phase A. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 596: Local-Remote Relay Tests
Download the UR test software from the GE Grid Solutions website (http://www.gegridsolutions.com/products/ support/ur/l90test.zip) or contact GE Grid Solutions for information about the UR current differential test program that allows the user to simulate different operating conditions for verifying correct responses of the relays during commissioning activities.
Page 597 These phasors and differential currents can be monitored at the menu where all current magnitudes and angles can be ACTUAL VALUES  METERING  87L DIFFERENTIAL CURRENT observed and conclusions of proper relay interconnections can be made. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 598 TESTING CHAPTER 9: COMMISSIONING L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 599: Theory Of Operation
The second major technical consideration is the restraint characteristic, which is the decision boundary between situations that are declared to be a fault and those that are not. The L30 uses an innovative adaptive decision process based on an online computation of the sources of measurement error. In this adaptive approach, the restraint region is an ellipse with variable major axis, minor axis, and orientation.
Page 600: L30 Architecture
CHAPTER 10: THEORY OF OPERATION The third major element of L30 design is sampling synchronization. In order for a differential scheme to work, the data being compared must be taken at the same time. This creates a challenge when data is taken at remote locations.
Page 601: Disturbance Detection
If more than one CT is connected to the relay (breaker-and-the half applications), then a maximum of all (up to four) currents is chosen to be processed for traditional restraint. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-3...
Page 602 Outside of the restraint boundary, the computed severity grows as the square of the fault current. The restraint area grows as the square of the error in the measurements. 10-4 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 603: Ground Differential Element
The line ground differential function allows sensitive ground protection for single-line-to-ground faults, allowing the phase differential element to be set higher (above load) to provide protection for multi-phase faults. The L30 ground differential function calculates ground differential current from all terminal phase currents. The maximum phase current is used for the restraint.
Page 604: Clock Synchronization
A loop filter then uses the frequency and phase angle deviation information to make fine adjustments to the clock frequency. Frequency tracking starts if the current at one or more terminals is above 0.125 pu of nominal; otherwise, the nominal frequency is used. 10-6 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 605: Frequency Detection
(GPS) to compensate for the channel delay asymmetry. This feature requires a GPS receiver to provide a GPS clock signal to the L30. With this option there are two clocks at each terminal: a local sampling clock and a local GPS clock.
Page 606: Phase Detection
In all cases, frequency deviation information also is used when available. The phase difference between a pair of clocks is computed by an exchange of time stamps. Each relay exchanges time stamps with all other relays that can be reached. 10-8 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 607 This can be done either in software or hardware, provided the jitter is limited to less than plus or minus 130 µs. A fixed bias in the time stamp is acceptable, provided it is the same for all terminals. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-9...
Page 608: Phase-Locking Filter
It is very important to combine these two integrators into a single function because it can be shown if two separate integrators are used, they can drift in opposite directions into saturation, because the loop would only drive their sum to zero. 10-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 609: Matching Phaselets
A lost message is detected simply by looking at the sequence numbers of incoming messages. A lost message shows up as a gap in the sequence. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-11...
Page 610: Start-Up
10.1.16 Online estimate of measurement errors GE's adaptive elliptical restraint characteristic is a good approximation to the cumulative effects of various sources of error in determining phasors. Sources of error include power system noise, transients, inaccuracy in line charging current computation, current sensor gain, phase and saturation error, clock error, and asynchronous sampling.
Page 611: Ct Saturation Detection
The L30 applies a dedicated mechanism to cope with CT saturation and ensure security of protection for external faults. The relay dynamically increases the weight of the square of errors (the so-called ‘sigma’) portion in the total restraint quantity, but for external faults only.
Page 612: Charging Current Compensation
For short transmission lines the charging current is a small factor and can therefore be treated as an unknown error. In this application, the L30 can be deployed without voltage sensors and the line charging current is included as a constant term in the total variance, increasing the differential restraint current.
Page 613: Differential Element Characteristics
Since the zero sequence voltage is not available, the L30 cannot compensate for the zero sequence current. The compensation scheme continues to work with the breakers open, provided that the voltages are measured on the line side of the breakers.
Page 614: Relay Synchronization
CT errors can be high and/or CT saturation can be experienced. The major difference between the L30 differential scheme and a percent differential scheme is the use of an estimate of errors in the input currents to increase the restraint parameter during faults, permitting the use of more sensitive settings than those used in the traditional scheme.
Page 615: Operating Condition Characteristics
10.2 Operating condition characteristics 10.2.1 Description Characteristics of differential elements can be shown in the complex plane. The operating characteristics of the L30 are fundamentally dependant on the relative ratios of the local and remote current phasor magnitudes and the angles of I as shown in the Restraint Characteristics figure.
Page 616 OPERATING CONDITION CHARACTERISTICS CHAPTER 10: THEORY OF OPERATION Figure 10-7: Restraint characteristics 10-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 617: Trip Decision Example
Current Differential section of the Settings chapter. The following figure shows how the L30 settings affect the restraint characteristics. The local and remote currents are 180° apart, which represents an external fault. The breakpoint between the two slopes indicates the point where the restraint area is becoming wider to override uncertainties from CT saturation, fault noise, harmonics, and so on.
Page 618: Fault Locator
The single-ended fault location method assumes that the fault components of the currents supplied from the local (A) and remote (B) systems are in phase. The figure shows an equivalent system for fault location. 10-20 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 619 Depending on the fault type, appropriate voltage and current signals are selected from the phase quantities before applying the preceding equation (the superscripts denote phases, the subscripts denote stations). For AG faults: Eq. 10-41 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-21...
Page 620 If the VTs are connected in a delta configuration, fault location is performed based on the delta voltages and zero-sequence voltage approximated based on the zero-sequence current: Eq. 10-48 10-22 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 621 CHAPTER 10: THEORY OF OPERATION FAULT LOCATOR where Z is the equivalent zero-sequence impedance behind the relay as entered under the fault report setting menu. SYS0 Figure 10-10: Fault locator scheme L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-23...
Page 622 FAULT LOCATOR CHAPTER 10: THEORY OF OPERATION 10-24 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 623: Maintenance
UR Family Communications Guide for the entries. The upper part of the window displays values. The lower part of the window is for factory service use. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-1...
Page 624 Float — A numbering system with no fixed number of digits before or after the decimal point. An example is 0.000000. Binary — A numbering system using 0 and 1. An example is 0000-0000-0000-0000. Entries are not saved when closing the window. 11-2 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 625: General Maintenance
GENERAL MAINTENANCE 11.2 General maintenance The L30 requires minimal maintenance. As a microprocessor-based relay, its characteristics do not change over time. Expected service life is 20 years for UR devices manufactured June 2014 or later when applied in a controlled indoor environment and electrical conditions within specification.
Page 626: Cybersentry Security Event Files
Using the Up or Down pushbuttons on the front panel, select the file. Press the COPY pushbutton. The files are copied from the L30 to the USB drive. Do not unplug the USB drive while copying is in progress, else the USB drive can be compromised.
Page 627: Convert Device Settings
Convert the settings by right-clicking one of the files in the Offline Window and selecting the Convert Device Settings option. GE recommends converting settings in firmware steps, for example when converting from 6.0 to 7.4x, convert first to 7.0 then 7.4 in order to follow embedded conversion rules and keep settings.
Page 628 Change settings in the new file, for example by looking at the original file. Write the converted file to the device, for example by dragging and dropping from the Offline Window to the Online Window. Check settings and operation. 11-6 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 629: Copy Settings To Other Device
11.5 Copy settings to other device Settings from one L30 device can be copied to another L30 device for rapid deployment. The order codes must match. See the Settings File section at the beginning of the Interfaces chapter for a list of settings not deployed, such as IP address.
Page 630: Compare Two Devices
UR device settings can be saved in a backup URS file using the EnerVista UR Setup software. The URS file is the standard UR settings file. For an introduction to settings files in the URS format, see the beginning of the Interfaces chapter. 11-8 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 631 Have this option enabled when you want to keep the IID file from the UR device instead of from another tool. The location of the file is C:\ProgramData\GE Power Management\urpc\Offline, for example.
Page 632 The file is copied from the computer to the location specified. To save list of sites and devices with an Environment backup: In EnerVista, click File > Environment > Backup. A window opens. Name and save the .ENV file. 11-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 633: Restore Settings
These messages display because the roles of the protection engineer and network engineer can be separate. The former can require a URS file, while the latter can require stored Modbus settings and protection schemes. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-11...
Page 634 EnerVista UR Setup software. To restore the list of sites and devices from an Environment backup: In EnerVista, click File > Environment > Restore. A window opens. Select the .ENV file to restore. 11-12 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 635: Upgrade Software
11.9 Upgrade firmware If upgrading both EnerVista software and L30 firmware, upgrade the software first. The firmware of the L30 device can be upgraded, locally or remotely, using the EnerVista software. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-13...
Page 636 You access the Convert Device Settings option by right-clicking the file in the Offline Window area at the lower left. GE recommends converting settings in firmware steps, for example when converting from 6.0 to 7.4x, convert first to 7.0 then 7.4 in order to follow embedded conversion rules and keep settings. Note that the values of all settings that have been defaulted during conversion are not listed in the conversion report;...
Page 637: Replace Front Panel
For an enhanced front panel, loosen the thumb screw and open slightly the front panel. For a standard front panel, lift up the black plastic latch on the right side of the front panel and open slightly the front panel. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-15...
Page 638 With a Phillips screwdriver, unscrew and remove the mounting bracket on the right side of the unit. The bracket for the enhanced front panel looks similar to that for the graphical front panel, but they are not the same. 11-16 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 639 Figure 11-15: Remove standard front panel mounting bracket on right side Open the front panel. Unplug or unscrew the grey ground cable from the front panel. Unplug the RJ45 connector from the CPU module in the second slot on the left. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-17...
Page 640 Unscrew and remove the mounting bracket with the front panel from the left side. Figure 11-17: Unscrew enhanced front panel mounting bracket on left side Figure 11-18: Unscrew standard front panel mounting bracket on left side 11-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 641 Figure 11-19: Attach mounting bracket to relay on left side (no power supply module in first slot) Screw the right mounting bracket to the right side of the relay. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-19...
Page 642 Optionally remove the protective plastic film on the graphical front panel. It is normally peeled off, but also can be left The graphical front panel has been installed but not connected. 11-20 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 643 Ensure that the RS485 connector and the black cover plate are not on the back of the CPU module before sliding the module into the front of the relay. Figure 11-23: Rear of a CPU module before insertion without RS485 connector or cover plate L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-21...
Page 644 Insert the silver SFP connector(s) at the back of the CPU module, then connect any Ethernet connection(s). Power up the relay. If the graphical front panel does not power up immediately, disconnect power, open the front 11-22 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 645: Replace Module
Open the enhanced front panel to the left once the thumb screw has been removed. This allows for easy access of the modules for withdrawal. The new wide-angle hinge assembly in the enhanced front panel opens completely and allows easy access to all modules in the L30. Figure 11-26: Modules inside relay with front cover open (enhanced front panel) L30 LINE CURRENT DIFFERENTIAL SYSTEM –...
Page 646: Battery
To avoid injury, ensure that the unit has been powered off for a minimum of three minutes before replacing the battery. Risk of fire if battery is replaced with incorrect type or polarity. 11-24 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 647: Dispose Of Battery
10. Reinstall the battery holder and the metal cover, and reinsert the power supply module into the unit. 11. Power on the unit. 12. Dispose of the old battery as outlined in the next section. 11.12.2 Dispose of battery L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-25...
Page 648 Paristo on merkitty tällä symbolilla ja saattaa sisältää cadmiumia (Cd), lyijyä (Pb) tai elohopeaa (Hg). Oikean kierrätystavan varmistamiseksi palauta tuote paikalliselle jälleenmyyjälle tai palauta se paristojen keräyspisteeseen. Lisätietoja sivuilla www.recyclethis.info. 11-26 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 649 å indikere at kadmium (Cd), bly (Pb), eller kvikksølv (Hg) forekommer. Returner batteriet til leverandøren din eller til et dedikert oppsamlingspunkt for korrekt gjenvinning. For mer informasjon se: www.recyclethis.info. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 11-27...
Page 650 Bu sembolle işaretlenmiş piller Kadmiyum(Cd), Kurşun(Pb) ya da Civa(Hg) içerebilir. Doğru geri dönüşüm için ürünü yerel tedarikçinize geri veriniz ya da özel işaretlenmiş toplama noktlarına atınız. Daha fazla bilgi için: www.recyclethis.info. 11-28 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 651: Clear Files And Data After Uninstall
For issues not solved by troubleshooting, the process to return the device to the factory for repair is as follows: • Contact a GE Grid Solutions Technical Support Center. Contact information is found in the first chapter. • Obtain a Return Materials Authorization (RMA) number from the Technical Support Center.
Page 652: Storage
Customers are responsible for shipping costs to the factory, regardless of whether the unit is under warranty. • Fax a copy of the shipping information to the GE Grid Solutions service department in Canada at +1 905 927 5098. Use the detailed return procedure outlined at https://www.gegridsolutions.com/multilin/support/ret_proc.htm...
Page 653: Flexanalog Items
Frequency rate of change 1 actual value 5860 Freq Rate 2 Value Hz/s Frequency rate of change 2 actual value 6144 SRC 1 Ia RMS Amps Source 1 phase A current RMS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 654 SRC 2 Igd Angle Degrees Source 2 differential ground current angle 6656 SRC 1 Vag RMS Volts Source 1 phase AG voltage RMS 6658 SRC 1 Vbg RMS Volts Source 1 phase BG voltage RMS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 655 SRC 2 Vx Mag Volts Source 2 auxiliary voltage magnitude 6754 SRC 2 Vx Angle Degrees Source 2 auxiliary voltage angle 6755 SRC 2 V_0 Mag Volts Source 2 zero-sequence voltage magnitude L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 656 SRC 1 Va Harm[6] Source 1 phase A voltage sixth harmonic 8070 SRC 1 Va Harm[7] Source 1 phase A voltage seventh harmonic 8071 SRC 1 Va Harm[8] Source 1 phase A voltage eighth harmonic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 657 SRC 1 Vc Harm[3] Source 1 phase C voltage third harmonic 8117 SRC 1 Vc Harm[4] Source 1 phase C voltage fourth harmonic 8118 SRC 1 Vc Harm[5] Source 1 phase C voltage fifth harmonic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 658 Source 2 phase A voltage twenty-fifth harmonic 8164 SRC 2 Vb THD Source 2 phase B voltage total harmonic distortion (THD) 8165 SRC 2 Vb Harm[2] Source 2 phase B voltage second harmonic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 659 SRC 2 Vc Harm[22] Source 2 phase C voltage twenty-second harmonic 8211 SRC 2 Vc Harm[23] Source 2 phase C voltage twenty-third harmonic 8212 SRC 2 Vc Harm[24] Source 2 phase C voltage twenty-fourth harmonic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 660 Remote terminal 1 current phase C angle 9374 Terminal 2 IA Angle Degrees Remote terminal 2 current phase A angle 9375 Terminal 2 IB Angle Degrees Remote terminal 2 current phase B angle L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 661 Phasor measurement unit 1 phase C current angle 9611 PMU 1 Ig Mag Amps Phasor measurement unit 1 ground current magnitude 9613 PMU 1 Ig Angle Degrees Phasor measurement unit 1 ground current angle L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 662 Source 1 phase B current eleventh harmonic 10284 SRC 1 Ib Harm[12] Source 1 phase B current twelfth harmonic 10285 SRC 1 Ib Harm[13] Source 1 phase B current thirteenth harmonic A-10 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 663 Source 2 phase A current eighth harmonic 10347 SRC 2 Ia Harm[9] Source 2 phase A current ninth harmonic 10348 SRC 2 Ia Harm[10] Source 2 phase A current tenth harmonic L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL A-11...
Page 664 Source 2 phase C current fifth harmonic 10410 SRC 2 Ic Harm[6] Source 2 phase C current sixth harmonic 10411 SRC 2 Ic Harm[7] Source 2 phase C current seventh harmonic A-12 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 665 Synchrocheck 3 delta phase 10883 Synchchk 3 SSCP DPh Degrees Synchrocheck 3 synchscope 10884 Synchchk 3 Delta F Volts Synchrocheck 3 delta frequency 10885 Synchchk 3 V1 Mag Volts Synchrocheck 3 V1 mag L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL A-13...
Page 666 Breaker 2 amp max phase B 12074 Brk 2 Amp Max C kA2-cyc Breaker 2 amp max phase C 12306 Oscill Num Triggers Oscillography number of triggers 13504 DCmA Ip 1 DCmA input 1 actual value A-14 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 667 RTD input 21 actual value 13573 RTD Ip 22 RTD input 22 actual value 13574 RTD Ip 23 RTD input 23 actual value 13575 RTD Ip 24 RTD input 24 actual value L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL A-15...
Page 668 RxGOOSE Analog 4 RxGOOSE analog input 4 45592 RxGOOSE Analog 5 RxGOOSE analog input 5 45594 RxGOOSE Analog 6 RxGOOSE analog input 6 45596 RxGOOSE Analog 7 RxGOOSE analog input 7 A-16 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 669 RxGOOSE analog input 30 45644 RxGOOSE Analog 31 RxGOOSE analog input 31 45646 RxGOOSE Analog 32 RxGOOSE analog input 32 61439 PMU Num Triggers Phasor measurement unit recording number of triggers L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL A-17...
Page 670 FLEXANALOG ITEMS APPENDIX A: FLEXANALOG OPERANDS A-18 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 671: B Radius Server
UR device for successful authentication, and the shortname is a short, optional alias that can be used in place of the IP address. client 10.0.0.2/24 { secret = testing123 shortname = private-network-1 In the <Path_to_Radius>\etc\raddb folder, create a file called dictionary.ge and add the following content. # ########################################################## GE VSAs ############################################################ VENDOR...
Page 672 Access Settings > Product Setup > Security. Configure the IP address and ports for the RADIUS server. Leave the GE vendor ID field at the default of 2910. Update the RADIUS shared secret as specified in the clients.conf file. Restart the relay for the IP address and port changes to take effect.
Page 673: C Command Line
When the Supervisor account is enabled, the 'Lock Relay' setting must first be changed to No before the putsettings, inservice, or reboot command can be used. This setting cannot be changed using the command line interface. • Use quotes ("") to enclose any parameter containing a space L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 674 For non-CyberSentry devices — Set <authentication type> to "traditional". Note that <authentication type> defaults to "traditional" if not specified. Set <account> to "COMMANDS" or "SETTINGS". If not specified, the SETTINGS account is used. Example: SetupCLI URPC login -d "C30 Melbourne" -A traditional -a SETTINGS -w 1password1 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 675 Read settings from device <device> and save them to the .urs file <File>. The <File> must not already exist. The default path to the output file is C:\Users\Public\Public Documents\GE Power Management\URPC\Data Example: SetupCLI URPC getsettings -d C30 -f "C30 Markham.urs"...
Page 676 SetupCLI URPC getsettings -d demoDevice -f devicefile.urs SetupCLI URPC compare -f existingfile.urs -r devicefile.urs -o output.txt The output is similar to the following: Comparing settings file aaa.urs : C:\Users\Public\Public Documents\GE Power Management\URPC\Data\ with bbb.urs : C:\Users\Public\Public Documents\GE Power Management\URPC\Data\ Setting Name...
Page 677 SetupCLI URPC getsettings -d DEV@SETUP_CLI -f "example file.urs" SetupCLI URPC logout -d DEV@SETUP_CLI SetupCLI URPC exit DEV@SETUP_CLI has to be used as the device name in the commands followed by the 'adddevice' command. L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 678 COMMAND LINE INTERFACE APPENDIX C: COMMAND LINE INTERFACE L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 679: Warranty
This chapter provides the warranty and revision history. D.1 Warranty For products shipped as of 1 October 2013, GE Grid Solutions warrants most of its GE manufactured products for 10 years. For warranty details including any limitations and disclaimers, see the Terms and Conditions at http://www.gegridsolutions.com/multilin/warranty.htm...
Page 680 17-3561 1601-9050-AF1 7.6x 30 June 2017 17-3779 Table D-2: Major changes for L30 manual version AF1 (English) Page Description General revision Updated "faceplate" to "front panel" for consistency and to reflect web site Added graphical front panel option to order codes and specifications in chapter 2, Interfaces chapter 4, Settings chapter 5, Actual Values chapter 6 Added PEAP-GTC and PAP protocols for authenticating user logins when using a RADIUS server.
Page 681 APPENDIX D: MISCELLANEOUS REVISION HISTORY Table D-4: Major changes for L30 manual version AE1 (English) Page Description General revision Added routable GOOSE content in chapters 2 and 5 3-35 Updated RS422 and Fiber Interface Connection figure for the clock channels (from 7a and 7b to 1a and 1b)
Page 682 REVISION HISTORY APPENDIX D: MISCELLANEOUS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 683 Full Load Current Contact Output Fiber Optic Communication FPGA Field-programmable Gate Array COMM Communications FREQ Frequency COMP Compensated, Comparison Frequency-Shift Keying CONN Connection File Transfer Protocol CONT Continuous, Contact FlexElement™ CO-ORD Coordination Forward L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 684 Low Voltage Parallel Redundancy Protocol PSEL Presentation Selector Machine Precision Time Protocol Machine to Machine Per Unit MilliAmpere PUIB Pickup Current Block Magnitude PUIT Pickup Current Trip Manual / Manually PUSHBTN Pushbutton L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 685 Time Dial Multiplier TEMP Temperature TFTP Trivial File Transfer Protocol Total Harmonic Distortion Timer Time Overcurrent Time Overvoltage TRANS Transient TRANSF Transfer TSEL Transport Selector Time Undercurrent Time Undervoltage TX (Tx) Transmit, Transmitter L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 686 ABBREVIATIONS L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 687: Approvals ...............................................................................................................................2-44
CyberSentry ................2-9 single shot sequence ..............5-283 Aggregator Auxiliary overvoltage actual values ..................6-24 FlexLogic operands ...............5-188 settings ....................5-182 logic ......................5-256 Aggregator error message ............7-11 settings ....................5-255 Alarm LEDs ...................5-121 specifications ..................2-29 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 688 Broken conductor FlexLogic operands ...............5-189 settings ....................5-301 C37.94 communications ............. 3-44, 3-47 Cannot log in .................... 2-9 Caution symbol in Offline Window ........... 4-70 CE certification ..................2-44 Certification .................... 2-44 Changes ......................D-1 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 689 Convert device settings ..............11-5 Dataset member is empty message ........5-68 Copy of Copy of ..................11-7 Date Copy settings for upgrading ............11-5 set ..................5-28, 5-108, 7-3 Copy settings to other device ............11-7 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 690 Engineer toolbar .................. 4-82 settings ....................5-312 Direct outputs error messages ..................7-9 logic diagram ...................5-313 overview .....................5-311 settings ....................5-312 Direct transfer trip ................. 2-8 Directional overcurrent see Phase, Ground, and Neutral directional L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 691 ......................3-50 Factory default reset ............... 5-8, 5-22 Far-End Fault Indication ..............5-46 Fast form-C relay specifications ..........2-37 Fast transient testing specifications ........2-43 Fault locator logic diagram ...................10-23 operation ...................10-20 Fault locator specifications ............2-33 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 692 Frequency rate of change settings ....................5-66 actual values ..................6-22 GPS problems ..................5-144 FlexAnalogs ...................A-1 FlexLogic operands ...............5-190 logic diagram ...................5-272 settings ....................5-270 specifications ..................2-30 Frequency tracking ................6-22 Frequency, nominal .................5-136 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 693 ..................2-30 self-test errors ..................7-13 Incompatible device order codes or versions ....11-14 Harmonic content ..............6-20, 6-21 Incompatible hardware error ............7-8 Harmonics actual values ................6-20, 6-21 Harmonics metering specifications ..................2-34 Heartbeat messages .............5-67, 5-70 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 694 ..............7-9 Keypad ...................... 4-38 battery replacement ..............11-24 cleaning ....................2-44 commands .....................7-3 module replacement ..............11-23 Labels, front panel ..............4-44, 4-77 upgrade or downgrade .............. 11-13 viii L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 695 Order codes .................... 2-11 Navigation keys ..................4-38 actual values ..................6-29 Negative sequence IOC update ..................3-60, 7-3 FlexLogic operands ...............5-190 Oscillatory transient testing specifications ......2-43 logic diagram ...................5-239 settings ....................5-238 specifications ..................2-28 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 696 ..................2-29 Phaselets ....................10-1 Phasor display graphical front panel ......4-58, 5-32 Phasor explained ................5-165 Phasors and phaselets ..............10-1 Pilot channel relaying ................2-5 Plastic film on front panel ............11-20 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 697 ..........6-8 import file .....................11-9 settings ....................5-108 Preserve custom attributes when importing SCD/CID files Reboot relay 11-9 using EnerVista ..................5-1 Print front panel labels ............4-44, 4-77 using relay ....................7-3 Recloser curves ..............5-161, 5-220 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 698 Serial number ..............3-1, 4-11, 6-29 settings ....................5-42 Serial ports specifications ..................2-39 settings ....................5-42 RTD FlexAnalogs .................. A-15 specifications ..................2-39 Server authentication ............... 5-16 Server unavailable self-test ............7-13 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 699 ..................7-10 Synchronize port, close ..................5-112 clock using time source ..............5-108 settings ....................5-112 clocks of UR devices to local computer .......5-109 files between offline and online ..........4-70 Synchronize Devices ...............5-109 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL xiii...
Page 700 ..............5-284 THD metering specifications ............2-34 unit not programmed error ............5-133 The URS file is part of a device folder ........11-11 Turn off alarm ..................4-35 Two-terminal mode ................2-7 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 701 ....4-61, 5-10 Warning messages in Engineer ..........4-72 Warning symbol in Offline Window .......... 4-70 Warning, firmware upload not supported ......11-14 Warranty ....................D-1 Waveform files, view ................. 4-81 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 702 ..................3-12 Withdrawal from operation ............11-29 Wrong transceiver message ............7-12 XOR gate explained ................4-84 Yellow caution icon in Offline Window ........4-70 Zero-sequence core balance ............3-15 Zero-sequence current removal ..........5-143 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...

GE L30 Instruction Manual

1 Introduction

Safety Symbols and Definitions

2 Product Description

Description

3 Installation

Unpack and Inspect

4 Interfaces

Enervista Software Interface

5 Settings

6 Actual Values

Actual Values Menu

7 Commands and Targets

8 Application of Settings

9 Commissioning

Testing

10 Theory of Operation

Quick Links

Related Manuals for GE L30

Summary of Contents for GE L30