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Toshiba JK Series Instructions Manual
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Toshiba JK Series Instructions Manual

Medium voltage controllers, 7.2kv maximum
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See also: Instruction Manual
Document:
OH01
Issued:
TOSHIBA
INSTRUCTIONS
OPERATION MAINTENANCE
JK
Medium Voltage Controllers
Maximum
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com

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Summary of Contents for Toshiba JK Series

  • Page 1 Document: OH01 Issued: TOSHIBA INSTRUCTIONS OPERATION MAINTENANCE Medium Voltage Controllers Maximum Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com...
  • Page 2 (800) 527-l 204 (Canada) F A X : ( 7 1 3 ) 4 6 6 - 8 7 7 3 Use only Toshiba-authorized replacement parts. This equipment is designed and built in accordance with applicable safety standards in effect on the date of manufacture. Unauthorized modifications can result in severe injury, death and property damage.

  • Page 3: Table Of Contents

    Page 2 TABLE OF CONTENTS Page SAFETY ............. 4 RECEIVING AND HANDLING .
  • Page 4 Page 3 TABLE OF CONTENTS Page Grounding ............Connections .
  • Page 5 SAFETY Page 4 IMPORTANT MESSAGES Read this manual and follow its instructions. Signal words such as DANGER, WARNING and CAUTION will be followed by important safety information that must be carefully reviewed. Indicates a situation which will result in death, serious injury, and severe property damage if you do not follow instructions.
  • Page 6 SAFETY CODES Toshiba medium voltage controllers are general purpose, Class E, magnetic controllers designed and built in accordance with the latest applicable provisions of NEMA ICS 2-324, UL 347 and the National Electrical Code. Installations must comply with all applicable...

  • Page 7: Safety

    SAFETY Page 6 HAZARDOUS VOLTAGE will cause severe injury, death, fire, explosion and property damage. Turn off and lock out Primary and Control Circuit Power before servicing. Do not open door unless Isolation Switch is OFF and Contactor is OPEN. Keep all panels and covers securely in place.

  • Page 8: Receiving And Handling

    File a claim with the carrier for any d a m a g e d missing item immediately notify nearest Toshiba Representative. Do not install or energize equipment that has been damaged. HANDLING MOVING Medium voltage motor controllers should be...

  • Page 9: Using A Forklift

    Always use a Toshiba JK LIFTING DEVICE for the installation or removal of the contactor carriage. Fig. 3 Use of Spreader Bar-Single Section...

  • Page 10: Contactor Carriage Handling

    Securely screw lift bolts into base. Removal of the contactor carriage is facilitated Attach overhead lifter to eye bolt on top of lifting attachment and lift from by the use of a Toshiba JK carriage lifting attachment (Fig. and a suitable overhead drawer.

  • Page 11: Storage

    Page 10 STORAGE PREPARATION If the controller is to be stored for any length of time prior to installation, the packing should be restored for protection during that period. Where conditions permit, packing should be left intact until the controller is at the final installation position.

  • Page 12: Routine Inspection

    STORAGE Page 11 ROUTINE INSPECTION Routine scheduled inspection should established if storage for an extended period is anticipated. This is to check for condensation, corrosion, vermin, and adequacy of space heating. Prior to inspection, the equipment should be carefully examined for evidence of physical damage, corrosion, other...

  • Page 13: G E N E R A L D E S C R I P T I O

    GENERAL DESCRIPTION Page 12 Toshiba medium voltage controllers are AC general-purpose NEMA Class E controllers designed for applications at utilization voltages ranging from 2.3 through 6.6 They are normally used to control motor loads, although other types of loads such as transformers and capacitors possible.

  • Page 14: Controller Compartment

    GENERAL DESCRIPTION Page 13 CONTROLLER COMPARTMENT Isolation Switch (Fig. 9) P o w e r i s s w i t c h e d o n a n d o f f t o e a c h individual controller compartment mounted,...
  • Page 15 Periodically, removal of the carriage may also be necessary for routine maintenance of the contactor or replacement of the power fuses. Always use a Toshiba JK Lifting Device (Fig. 12) for removal or installation of the contactor carriage.

  • Page 16: Service Drawer

    Page 15 GENERAL DESCRIPTION addition, when withdrawable contactor carriage inserted i n t o t h e c o n t r o l l e r compartment, it becomes interlocked with the isolation switch so that the switch may not be opened or closed unless the contacts of the vacuum contactor...

  • Page 17: Outgoing Load Connections

    Page 16 GENERAL DESCRIPTION Outgoing Load Connections Connections outgoing load cable l o c a t e d a t t h e r e a r o f e a c h c o n t r o l l e r E X I T C A B L E S compartment just...

  • Page 18: General 3

    GENERAL DESCRIPTION Page 17 Listed compression connectors suitable for the cable being used. hardware provided with t h e c o n t r o l l e r t o a t t a c h c a b l e connectors to bus pads.

  • Page 19: Control Power Transformer

    GENERAL DESCRIPTION Page 18 Control Power Transformer A control power transformer (Fig. 18) is mounted on the left-hand side wall of the controller compartment. Power supplied t h e f u s e d p r i m a r y o f t h e c o n t r o l p o w e r transformer from stabs on the withdrawable contactor carriage.

  • Page 20: Operating Handle

    GENERAL DESCRIPTION Page 19 Operating Handle The external operating handle shown in Fig. 20 is used to control the operation of the isolation switch. Moving the handle upward turns the switch on, thus applying incoming power to current-limiting fuses withdrawable carriage.

  • Page 21: Handle Interlock

    GENERAL DESCRIPTION Page 20 Handle Interlock Two mechanical interlocks are provided to handle prevent operating s w i t c h improperly. The first interlock prevents moving the handle from OFF to ON unless the compartment door is closed (Fig. 22). The second interlock prevents the switch handle from being moved in either direction unless the contacts of the vacuum contactor...

  • Page 22: Interlocks Electrical

    GENERAL DESCRIPTION Page 21 Interlocks Electrical Control Power Interlock T h e c o n t r o l p o w e r i n t e r l o c k i s a microswitch which is directly driven by the operation of the switch handle (Fig.

  • Page 23: Low Voltage Compartment

    Page 22 GENERAL DESCRIPTION VOLTAGE COMPARTMENT T h e l o w v o l t a g e c o m p a r t m e n t c o n t a i n s controller components r a t e d 6 0 0 v o l t s maximum.

  • Page 24: Prepared Spaces

    GENERAL DESCRIPTION Page 23 the main bus compartment and is used to provide common ground point between cubicles. Vertical ground riser bars extend f r o m t h e c o m m o n g r o u n d b u s i n t o e a c h medium voltage controller...

  • Page 25: Contactor Ratings

    GENERAL DESCRIPTION Page 24 CONTACTOR RATINGS TABLE 1. CONTACTOR TYPE HCV-5HAM (Magnetically Held) Coil drive board setting required (120 VAC standard). CONTACTOR TYPE HCV-5HAML (Latched Type) Permissible Switching Frequency Mechanical Life 250,000 Operations Tripping Voltage Rated DC Tripping Current 4.8 A DC Max Other characteristics of latched contactor same as magnetically held type except number of auxiliary contacts is reduced to 2 N.O.-3 N.C.

  • Page 26: Controller Ratings

    GENERAL DESCRIPTION Page 25 CONTROLLER RATINGS TABLE 2. SHORT-CIRCUIT & WITHSTAND CAPABILITY Interrupting Interrupting Short Time Short Time Dielectric Impulse Capacity Capacity Capability Capability Withstand Voltage Seconds MVA) 1 Second 1 Minute Withstand Amperes) 6 0 0 0 A AC 19 50,000 RMS 2 4 0 0 A DC 26...
  • Page 27 GENERAL DESCRIPTION Page 26 TABLE 4. APPROXIMATE* MAXIMUM HORSEPOWER BASED ON CONTINUOUS CURRENT Maximum Horsepower at Utilization Voltages 2300 Volts, 3-Phase 4000 Volts, - P h a s e 6600 Volts, 3-Phase Enclosed M a x i m u m Syn.

  • Page 28: Installation

    PRIOR TO INSTALLATION or other special equipment, such as heating, cooling or ventilation. Contact Toshiba for further information. The maximum fault capability of the power system at the point of installation should be If the location for installation is damp, space verified and must not exceed the short-circuit heaters may be required.

  • Page 29: Installation Site Preparation

    INSTALLATION Page 28 INSTALLATION SITE PREPARATION It is recommended that site preparation be completed before controller unpacked, so that possible problems such as headroom, conduit location, cable tray locations, ventilation, etc. can be solved, assuring a proper installation in compliance with the building plans and codes.

  • Page 30: Grounding

    INSTALLATION Page 29 GROUNDING The controller line-up must be grounded in accordance with requirements National Electrical Code. Proper equipment grounding must be established before making any incoming power connection. If a main ground bus (Fig. 32) is furnished, make the ground connection to this bus.
  • Page 31 INSTALLATION Page 30 outgoing equipment grounding equipment grounding conductors having conductors and the grounded neutral a size in accordance with NEC 250-95 bus of the system. a n d with main conductors or by bonding to the No connection should be made to raceway enclosing the main supply ground on the load side of any neutral conductors in accordance with NEC...

  • Page 32: Connections

    INSTALLATION Page 31 CONNECTIONS Main power bus and horizontal ground bus are supplied with links join shipping sections C a b l e a n d w i r e b u n d l e s t h a t e n t e r t h e together.
  • Page 33 Page 32 INSTALLATION C L E S P L I T G R A D E C A R R I A G E B O L T F L A T F L A T W A S H E R H E X H E X N U T...

  • Page 34: Incoming Line

    INSTALLATION Page 33 INCOMING LINE Incoming power cable connections should made at the points shown on the wiring diagram furnished with equipment. These connections will normally made separate incoming compartment to bus lugs or to an incoming load interrupter switch or vacuum circuit breaker.

  • Page 35: General

    CHECK Page 34 GENERAL A F T E R I N S T A L L A T I O N , B U T B E F O R E ENERGIZING THE CONTROLLER for the first time, follow the procedure below to verify that equipment properly installed...

  • Page 36: W I R I N

    PRE-ENERGIZATION CHECK Page 35 Before closing the enclosure, all metal chips, scrap wire and other debris left over from installation must be cleaned out. If there is an appreciable accumulation of dust or dirt, the enclosure should be cleaned by using a brush, vacuum cleaner or clean, lint free brush.
  • Page 37 CHECK Page 36 DEVICEIMECHANISM CHECKS All devices should be checked for damage (Fig. 43). All necessary repairs or replacements should be made. Do not energize damaged equipment that has not been repaired verified. E n s u r e t h a t s a f e t y s i g n s a r e n o t covered or obscured by paint.

  • Page 38: Electrical Checks

    PRE-ENERGIZATION CHECK Page 37 ELECTRICAL CHECKS Hazardous voltages are present during dielectric With incoming power isolated testing which can result loads disconnected electrically, in serious injury or death. control circuit and other mechanisms should be exercised to determine that High potential tests t h e d e v i c e s o p e r a t e p r o p e r l y .

  • Page 39: Operation

    . Installation contactor carriages upper compartments of two- and three-high stacking arrangements require of a Toshiba JK lifting device. Manually lifting heavy Fig. 46 Release Lever Disengaged equipment c a n cause serious injury.

  • Page 40: Initial Energization 3

    OPERATION Page 39 The release lever must be pushed in (Fig. 48) before the isolation switch is closed or the controller is operated under load. The medium voltage compartment door cannot be closed unless the release lever is pushed in. A mechanical interlock prevents the isolation switch from being closed unless the medium voltage door is closed.
  • Page 41 OPERATION Page 40 the off position. equipment should energized sequence by starting at the source end of the system and working towards the load end. First the main devices, then the feeder devices and then the branch circuit devices should be closed.

  • Page 42: Maintenance

    MAINTENANCE Page 41 In order to ensure continued reliable and safe operation of the equipment, a program of periodic maintenance must be established. Operating and environmental conditions will dictate frequency inspection required. NFPA Publication “Electrical Equipment Maintenance” (Fig. 5 may be used as a guide for setting up the maintenance program.

  • Page 43: General Inspection

    T h e f o l l o w i n g p a g e s d e t a i l m a i n t e n a n c e procedures recommended Toshiba In general, the medium voltage controllers.

  • Page 44: Electrical Joints

    Contactor Carriage there is any excessive build-up of dirt or other foreign material, wipe clean and relubricate with a light coat of Toshiba grease, making sure that no grease Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com...

  • Page 45: Isolation Switch

    MAINTENANCE Page 44 gets on the insulated fuse housing. Wipe off any dust or dirt which may have accumulated on the inside or outside of the insulated power fuse housing or on the vacuum contactor housing. Check the power fuses for any signs of discoloration.

  • Page 46: Switch Handle Mechanism

    SWITCH HANDLE MECHANISM mechanism and, if necessary, apply a light coat of Toshiba B8 grease to the The handle mechanism which operates the inside contact surfaces switch isolation switch is adjusted at the factory and blades.

  • Page 47: Interlocks

    Page 46 MAINTENANCE The moving joints should be occasionally Check that the handle interlock to the lubricated with a light coat of Toshiba vacuum contactor operates freely. grease. Lubricate with Toshiba B8 grease if necessary. Refer to the GENERAL INTERLOCKS...

  • Page 48: Control Power Transformer

    MAINTENANCE Page 47 CONTROL POWER TRANSFORMER Wipe off the surface of the control power transformer. (Fig. Check the condition of the primary fuses and fuse clips. Check all screws tightness. Check that the primary stab clips which mate with the withdrawable contactor carriage are tight and properly aligned with the carriage stabs.

  • Page 49: Maintenance After A Fault Condition

    Toshiba representative. ISOLATION SWITCH The external operating handle must be capable of opening the switch. If the handle fails to open the switch or if visual inspection after...

  • Page 50: Vacuum Contactor

    MAINTENANCE AFTER A FAULT CONDITION Page 49 VACUUM CONTACTOR Operate vacuum contactor (Fig. electrically from test power and observe that it opens and closes freely. If the vacuum bottles show any signs of binding, they should be r e p l a c e d . C o n t a c t y o u r T o s h i b a...

  • Page 51: Warranty And Limitation Of Liability

    AND PARTS FURNISHED PURSUANT TO THE FOREGOING WARRANTY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY. The total liability of the Company, Toshiba Corporation and their suppliers and subcontractors for any loss, damage or claim, whether in contact, tort (including negligence and liability without fault), or otherwise, arising...

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