Toshiba JK400 Series User manual

Document: VF010H03 Rev. 5
INSTRUCTION MANUAL
INSTALLATION – OPERATION – MAINTENANCE
JK Series 400 Ampere Medium Voltage Controllers
Fixed Type
7.2kV Maximum
Issued: 9/19

Basic Installation and Operation Guide
JK Series 400 Series Fixed Controllers

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
Important Notice
The instructions contained in this manual are not intended to cover all details or variations in equipment
types nor may it provide for every possible contingency concerning the installation, operation, or
maintenance of this equipment. Should additional information be required, contact your Toshiba
Customer Support Center.
The contents of this manual shall not become a part of or modify any prior or existing agreement,
commitment, or relationship. The sales contract contains the entire obligation of Toshiba International
Corporation. The warranty contained in the contract between the parties is the sole warranty of Toshiba
International Corporation and any statements contained herein do not create new warranties or modify
the existing warranty.
Any electrical or mechanical modifications to this equipment without the prior written consent of
Toshiba International Corporation may void all warranties or other safety certifications.
Unauthorized modifications may also result in safety hazard or equipment damage.
Misuse of this equipment could result in injury and equipment damage. In no event will Toshiba
International Corporation be responsible or liable for direct, indirect, special, or consequential
damage or injury that may result from the misuse of this equipment.
About This Manual
Every effort has been made to provide accurate and concise information to you, our customer.
At Toshiba International Corporation we are continuously striving for better ways to meet the constantly
changing needs of our customers. E-mail your comments, questions, or concerns about this publication
to [e-mail].

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
Purpose and Scope of Manual
This manual provides information on how to safely install, operate, maintain, and dispose of your JK
controller/starter. The information provided in this manual is only applicable to the fixed type 400A JK
Controller.
This manual provides information on the various features and functions of this powerful device,
including:
• Installation
• Operation
• Mechanical and electrical specifications
Included is a section on general safety instructions that describe the warning labels and symbols that
are used on the device and throughout the manual. Read the manual completely before installing,
operating, performing maintenance, or disposing of this equipment.
This manual and the accompanying drawings should be considered a permanent part of the equipment
and should be readily available for reference and review. Dimensions shown in the manual are in
imperial units and/or the metric equivalent. Connection drawings within this document convey the typical
topology of the JK 400 controller.
Because of our commitment to continuous improvement, Toshiba International Corporation reserves the
right, without prior notice, to update information, make product changes, or to discontinue any product or
service identified in this publication.
Toshiba International Corporation (TIC) shall not be liable for direct, indirect, special, or
consequential damages resulting from the use of the information contained within this manual.
This manual is copyrighted. No part of this manual may be photocopied or reproduced in any form
without the prior written consent of Toshiba International Corporation.
© Copyright 2019 Toshiba International Corporation.
TOSHIBA® is a registered trademark of Toshiba Corporation. All other product or trade references
appearing in this manual are registered trademarks of their respective owners.
All rights reserved.
Printed in the U.S.A.

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
Contacting TIC’s Customer Support Center
Toshiba International Corporation’s Customer Support Center can be contacted to obtain help in
resolving any system problem that you may experience or to provide application information.
The Support Center is open from 8 a.m. to 5 p.m. (CST), Monday through Friday. The Center’s toll free
number is US [phone]/Fax [phone] CAN [phone] MEX 01 [phone].
For after-hours support follow the directions of the outgoing message when calling. You may also
contact Toshiba International Corporation by writing to:
Toshiba International Corporation
13131 West Little York Road
Houston, Texas 77041-9990
For further information on Toshiba International Corporation’s products and services, please visit our
website at www.toshiba.com/tic.
TOSHIBA INTERNATIONAL CORPORATION
JK Series Controller
Complete the following information and retain for your records.
Model Number: _____________________________________________________________________
Serial Number: _____________________________________________________________________
Project Number (if applicable):_________________________________________________________
Date of Installation: _________________________________________________________________
Inspected By: _____________________________________________________________________
Name of Application: ________________________________________________________________

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
General Safety Information
DO NOT attempt to install, operate, maintain, or dispose of this equipment until you have read and understood
all of the product safety information and directions that are contained in this manual.
Safety Alert Symbol
The Safety Alert Symbol is comprised of an equilateral triangle enclosing an exclamation mark. This indicates
that a potential personal injury hazard exists.
Signal Words
Listed below are the signal words that are used throughout this manual followed by their descriptions and
associated symbols. When the words DANGER, WARNING, and CAUTION are used in this manual, they will be
followed by important safety information that must be carefully followed.
The word DANGER preceded by the safety alert symbol indicates that an imminently hazardous situation exists
that, if not avoided or if instructions are not followed precisely, will result in serious injury to personnel or loss of
life.
The word WARNING preceded by the safety alert symbol indicates that a potentially hazardous situation exists
that, if not avoided or if instructions are not followed precisely, could result in serious injury to personnel or loss
of life.
The word CAUTION proceeded by the safety alert symbol indicates that a potentially hazardous situation exists
that, if not avoided or if instructions are not followed precisely, may result in minor or moderate injury.
The word NOTE provides helpful information.
NOTE
DANGER
WARNING
CAUTION

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
Equipment Warning Labels
DO NOT attempt to install, operate, perform maintenance, or dispose of this equipment, until you have read and
understood all of the product labels and user directions that are contained in this manual.
Warning labels that are attached to the equipment will include the exclamation mark within a triangle.
DO NOT remove or cover any of these labels. If the labels are damaged or if additional labels are required, contact
the Toshiba Customer Support Center.
Labels attached to the equipment are there to provide useful information or to indicate an imminently hazardous
situation that may result in serious injury, severe property and equipment damage, or loss of life if safe procedures
or methods are not followed as outlined in this manual.
Qualified Personnel
Installation, operation, and maintenance shall be performed by Qualified Personnel ONLY. A Qualified Person
is one that has the skills and knowledge relating to the construction, installation, operation, and maintenance of
the electrical equipment and has received safety training on the hazards involved (Refer to the latest edition of
NFPA 70E for additional safety requirements).
Qualified Personnel shall:
• Have carefully read the entire manual.
• Become familiar with the construction and function of the starter, the equipment being driven, and the hazards
involved.
• Be able to recognize and properly address hazards associated with the application of motor-driven equipment.
• Be trained and authorized to safely energize, de-energize, ground, lock-out/tag-out circuits and equipment, and
clear faults in accordance with established safety practices.
• Be trained in the proper care and use of protective equipment such as safety shoes, rubber gloves, hard hats,
safety glasses, face shields, flash clothing, etc., in accordance with established safety practices.
For further information on workplace safety, visit www.osha.gov.

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
Equipment Inspection
• Upon receipt of the equipment, inspect the packaging and equipment for shipping damage.
• Carefully unpack the equipment and check for parts that may have been damaged during shipping, missing
parts, or concealed damage. If any discrepancies are discovered, it should be noted with the carrier prior to
accepting the shipment, if possible. File a claim with the carrier if necessary and immediately notify your Toshiba
Customer Support Center.
• DO NOT install the starter if it is damaged or if it is missing any component(s).
• Ensure that the rated capacity and the model number specified on the nameplate conform to the order
specifications.
• Modification of this equipment is dangerous and is to be performed by factory trained personnel ONLY. When
modifications are required, contact your Toshiba Customer Support Center.
• Inspections may be required after moving the equipment.
• Contact your Toshiba Customer Support Center to report discrepancies or for assistance, if required.
Handling and Storage
• Use proper lifting techniques when moving the equipment, including properly sizing up the load, getting
assistance, and using a forklift, if required.
• Store in a well-ventilated location, preferably in the original packaging, if the equipment will not be used upon
receipt.
• Store in a cool, clean, and dry location. Avoid storage locations with extreme temperatures, rapid temperature
changes, high humidity, moisture, dust, corrosive gases, or metal particles.
• The storage temperature range of the contactor is 23° to 104° F (-5° to 40° C). If stored at a lower temperature
or where high humidity exists, a cubicle space heater is required, powered from an external 120Vac source.
• DO NOT store the unit in places that are exposed to outside weather conditions (e.g. wind, rain, snow).
• Store in an upright position.
Disposal
Never dispose of electrical components via incineration. Contact your state environmental agency for details on
disposal of electrical components and packaging in your area.

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
Table of Contents
PAGE
RECEIVING, HANDLING/MOVING, AND UNPACKING........................................................................1
Receiving and Unpacking ...........................................................................................................1
Handling and Moving ..................................................................................................................1
Using a Forklift ............................................................................................................................1
Overhead Lifting..........................................................................................................................2
Initial Inspection ..........................................................................................................................2
LOCATION.............................................................................................................................................2
Storage .......................................................................................................................................2
Indoor Equipment........................................................................................................................2
Outdoor Equipment.....................................................................................................................3
Routine Inspection ......................................................................................................................3
INSTALLATION .....................................................................................................................................3
Rating Verification.......................................................................................................................3
Location ......................................................................................................................................3
Service Conditions ......................................................................................................................4
Installation Site Preparation ........................................................................................................4
Mounting .....................................................................................................................................5
Additional Cabinet Entries...........................................................................................................5
Ground Connections ...................................................................................................................5
Medium Voltage Power Connections ..........................................................................................7
Incoming Line .............................................................................................................................9
Load Connections .......................................................................................................................9
Power Fuse Cartridge ...............................................................................................................10
PRE-ENERGIZATION CHECK ............................................................................................................11
General.....................................................................................................................................11
Wiring Check ............................................................................................................................12
Device/Mechanism Checks.......................................................................................................13
Electrical Checks ......................................................................................................................14
GENERAL DESCRIPTION...................................................................................................................15
Construction..............................................................................................................................15
Controller Compartment............................................................................................................16
Isolation Switch .............................................................................................................16
Vacuum Contactor.........................................................................................................17
Outgoing Load Connections ..........................................................................................17
Control Power/Potential Transformers...........................................................................18
Operating Handle ..........................................................................................................19
Interlocks - Mechanical..................................................................................................19
Door Interlock ....................................................................................................19
Handle Interlock.................................................................................................20
Vacuum Contactor Interlock...............................................................................20
Interlocks - Electrical .....................................................................................................21
Control Power Interlock (CPI).............................................................................21
Test Power Interlock (TPI) .................................................................................21
Low Voltage Compartment........................................................................................................22
Main Bus Compartment ............................................................................................................23
Contactor Ratings .....................................................................................................................24
Controller Ratings .....................................................................................................................25
Rating Table .............................................................................................................................26

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
OPERATION .....................................................................................................................................27
Initial Energization.....................................................................................................................27
MAINTENANCE ................................................................................................................................28
Maintenance Record.................................................................................................................28
General Inspection....................................................................................................................29
Electrical Joints.........................................................................................................................29
Power Fuses.............................................................................................................................30
Vacuum Contactor ....................................................................................................................30
Isolation Switch .........................................................................................................................31
Switch Handle Mechanism........................................................................................................32
Interlocks ..................................................................................................................................33
Control Power/Potential Transformers ......................................................................................33
MAINTENANCE AFTER A FAULT CONDITION ...............................................................................34
Enclosure..................................................................................................................................34
Isolation Switch .........................................................................................................................34
Fuse Mounting ..........................................................................................................................34
Terminals and Internal Conductors ...........................................................................................34
Overload Relay .........................................................................................................................34
Vacuum Contactor ....................................................................................................................34
Return to Service ......................................................................................................................34

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
1
RECEIVING, HANDLING/MOVING, AND UNPACKING
Receiving and Unpacking
Upon receipt of the equipment, do the following:
•All JK Series units are shipped in the vertical (upright) position and should be handled accordingly when received.
If the controller is not upright upon receipt, notify the carrier of possible damage. Upright the units as soon as
possible and immediately notify the nearest Toshiba representative.
•Carefully unpack the unit and make an immediate inspection for any concealed damage which might have
occurred during shipment. If damage is found, it should be noted with the carrier prior to accepting the shipment,
if possible. Report any damage immediately and file a claim with the freight carrier within 15 days of receipt.
•Verify that the starter description on your unit matches your purchase order. The starter information is located
on stickers in the medium voltage incoming compartment.
•Keep the equipment upright.
Do not install or energize equipment that has been damaged.
Do not lay the equipment on its side or upside down.
Handling and Moving
Medium voltage controllers should be handled with
care to avoid damage to components, frame, and
finish (Fig. 1).
The capability of the moving equipment to handle
the weight of the controller shipping section should
be confirmed. The equipment should remain
secured to the shipping skid to prevent distortion of
the frame during moving and to minimize tipping.
Extreme care should be exercised during any
movement and placement operations to prevent
dropping or tipping.
Do not place any part of your
body beneath the equipment
being lifted. Improperly
secured equipment can fall
or tip over quickly and
without notice.
Using a Forklift
A forklift truck may offer a more convenient method
of handling the controller. A safety strap should be
used when handling with a forklift. The ends of the forks
should not enter the bottom of an open-bottom
enclosure. Fig. 1 Moving the Controller
WARNING
CAUTION
WARNING

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
2
Overhead Lifting
When it is necessary to move the equipment between
elevations, overhead hoisting may be required. Lifting angles
(for multiple controller sections) are provided on top of the
enclosure for this purpose. Spreaders (Fig. 2) should be used to
provide the vertical lift on single controllers to prevent eye-bolt
failure. Always keep the controller upright while lifting. Some
controller sections may contain heavy or special equipment that
will cause the center of gravity to be off-center. Rigging lengths
should be adjusted to maintain the controller in an upright
position. The angle between the lifting cables and vertical should
not be allowed to exceed 45 degrees (Fig. 3). Ropes or cables
should not pass through the holes in lifting angles or eye-bolts.
Slings with safety hooks or shackles of adequate load rating
should be used.
Fig. 2 Use of Spreader Bar - Single Section
Initial Inspection
•Make a complete visual check of the unit for damage which
may have occurred during shipping and handling. Do not
attempt to continue installation or start up the unit if it is
damaged.
•Check for loose mechanical assemblies or broken wires
which may have occurred during transportation or handling.
Loose electrical connections will increase resistance and
cause the unit to function improperly.
•Prior to beginning the installation, verify that the load and
JK unit are rated for the proper amperage and voltage.
Fig. 3 Lifting Multiple Sections
LOCATION
Storage
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, the
packing should be left intact until the controller is at the final installation position. If the
packing (Fig. 4) is removed, the top and openings of the controller should be covered
during the construction period to protect it against dust and debris.
Indoor Equipment
Controllers designed for indoor installation (e.g. Type 1, 12) that are not to be installed
and energized immediately should be stored in a clean, dry space where a uniform
temperature prevents condensation. Preferably, the controller should be stored in a
heated building, with adequate air circulation and protected from dirt and water.
Equipment should be stored where it is not subject to mechanical damage, especially
Fig. 4 Storage

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
3
during building construction. An indoor controller that is to be stored outdoors should be securely covered for
protection from weather conditions and dirt. Temporary electrical heating should be installed to prevent
condensation. Approximately 150 watts per enclosure is usually adequate.
NOTE: All loose packing or flammable materials should be removed before energizing space heaters.
Outdoor Equipment
An un-energized controller designed for outdoor installation (e.g. Type 3R) should be kept dry internally by installing
electrical heating or by energizing provided space heaters. All openings, either used or unused, should be covered
or sealed to prevent the entry of rain, vermin, insects, etc.
Routine Inspection
Routine scheduled inspection should be 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, or other deterioration.
Do not install equipment found to have damage or deterioration that could affect
the unit performance.
INSTALLATION
Rating Verification - Prior To Installation
The maximum fault capability of the power system at the point of installation should be verified and must not exceed
the short-circuit rating of the controller (see RATINGS section). All system accessories, such as surge suppressers,
lightning arresters, etc., should be checked to verify their ratings capacity.
Do not exceed the ratings specified on the controller nameplate or system accessories.
Location
Overhead should be checked for plumbing condensation, sprinklers, or similar possible sources of trouble. A clearance
of 1/2 inch should be provided between a wall and the rear of the controller for indoor equipment, when rear access
is not required. If rear access is required in either environment, a minimum of 30 inches should be provided. Consult
local codes in case more space is required.
A minimum of 48 inches working space should be allowed in front of the controller. This minimum should be increased
if necessary to accommodate movement around open enclosure doors to comply with applicable codes.
WARNING
DANGER

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
4
If the location for installation is damp, space heaters may be
required. If space heaters (Fig. 5) are furnished inside the
controller, they should be connected in accordance with the
wiring diagram furnished.
Do not install this equipment in areas
where unusual service conditions exist,
unless the equipment has been
specially designed for the particular
environment.
Fig. 5 Typical Space Heater
Service Conditions
Toshiba medium voltage controllers are intended for usual service conditions as defined by NEMA. The equipment
should not be exposed to corrosive or explosive fumes, dusts, vapors, dripping or standing water, abnormal
vibration, shock, tilting, or other abnormal operation conditions. The temperature of the ambient air surrounding the
controller should be between the limits of 0°C (32°F) and +40°C (104°F). The altitude of the equipment installed
should not exceed 3300 ft. (1000m).
NOTE: Temperature or altitude conditions outside of the usual limits may require derating or other special
equipment, such as heating, cooling, or ventilation. Contact Toshiba for further information.
Do not install this equipment in areas where unusual service conditions exist,
unless the equipment has been specially designed for the particular environment.
Installation Site Preparation
It is recommended that site preparation be completed before the controller is 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. The floor on which the controller will be placed must
be level so that the enclosure is not distorted when bolted in place. Ensure the equipment adequately clears any
underground raceways or cables.
WARNING
WARNING

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
5
Mounting
Each shipping section must be leveled and firmly secured to its
supporting foundation. Steel shims may be used for final leveling (Fig.
6), if necessary. When three or more shipping sections are to be
arranged in one continuous line-up, the center shipping section should
normally be located first.
Follow the equipment outline drawings to determine the location of the
mounting bolt holes and any conduit locations.
Fig. 6 Leveling Using Shims
Various methods may be used to anchor the enclosure to the foundation,
including expandable inserts or “J” bolts embedded in concrete. The
recommended size for anchor bolts is 1/2” (Fig. 7).
For heavy equipment, enclosure must be
securely anchored to prevent tipping over.
Additional Cabinet Entries
If conduit entry locations are required in areas other than the removable
plates, cover the electrical assemblies to prevent metal filings from
becoming lodged in areas which may cause a reduction in the high
voltage clearances or a short circuit. After the work is completed,
thoroughly clean the area and inspect the unit for foreign material.
Fig. 7 Securely Anchor the Controller
Ground Connections
The controller line-up must be grounded in accordance with the requirements of the National Electrical Code. Proper
equipment grounding must be established before making any incoming power connection. If a main ground bus
(Fig. 8a) is furnished, make the ground
connection to this bus. If there is no ground
bus, the sections which are shipped
separately should be connected to ensure a
continuous grounding path.
Each section contains a vertical ground bus
(Fig. 8b) extending from the main ground bus
or ground pad to each controller
compartment.
Fig. 8a Horizontal Fig. 8b Vertical Ground Bus
Ground Bus in Controller Compartment
WARNING

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
6
Special attention should be paid to protection for operating personnel, to protection of equipment itself (e.g. ground
fault relays), and protection of sensitive transducers or control devices that are electronic in nature.
The following may be used as a general guide with regard to equipment grounding.
Controller used as service equipment for a grounded system or as a main section for a separately derived system:
a. The grounding electrode conductor (ground wire) sized in accordance with NEC 250 should be run from the
grounding electrode to the controller ground bus or ground terminal.
b. Unless already done at the factory, a main bonding jumper should be installed from the incoming grounded
connector bus (neutral) to the ground bus or designated grounding point. If a jumper is not furnished, one having
a size in accordance with NEC 250 should be selected.
c. Steps (a) and (b) should effectively connect together the grounding electrode, the controller frame, all outgoing
equipment grounding conductors, and the grounded neutral bus of the system.
d. No connection should be made to ground on the load side of any neutral disconnecting line or any sensor used
for ground fault protection. No connections should be made between outgoing grounding connectors and the
neutral.
e. Where the controller or system is dual-fed (double-ended) and has ground fault protection, special
precautions are necessary to accomplish proper grounding and bonding.
Controller used as service equipment for an ungrounded system or as a main section for a separately derived
system:
a. A grounding electrode conductor (ground wire) sized in accordance with NEC 250 should be run from the
grounding electrode to the controller ground bus or ground terminal.
b. If the system is grounded at any point ahead of the controller, the grounded conductor should be run to the
controller in accordance with NEC 250 and connected to the ground bus or ground terminal.
c. Steps (a) and (b) should effectively connect together the grounding electrode, the controller frame, all outgoing
equipment grounding connectors, and any grounded conductor which runs to the controller.
Controller not used as service equipment or as a main section for a separately derived system, and used on either
a grounded or ungrounded system:
a. The controller frame and any ground bus should be grounded by means of equipment grounding conductors
having a size in accordance with NEC 250 and run with the main supply conductors or by bonding to the
raceway enclosing the main supply conductors in accordance with NEC 250.

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
7
b. Ground leads should be
connected to cable
potheads/shields as
specified by the
manufacturer of these
devices.
Fig. 9 Ground Bus Splice
Medium Voltage Power Connections
Use a properly calibrated torque wrench to tighten all MV connections according
to Figures 10a and 10b.
Cable and wire bundles that enter the controller enclosure should be routed to
avoid interference with moving parts. Minimum bending radius for the type of
cable used should be observed.
Power cables should be braced and/or laced to withstand short circuit forces
wherever such cables are unsupported. Power cables should be adequately
sized to carry the motor full load current in accordance with NEC requirements,
and have an adequate voltage rating. Cables should be dressed and terminated
as appropriate to the voltage class and cable manufacturer’s recommendations.
Fig. 10a Torque Specs for
MV Power Connections
Main power bus (when provided) and horizontal ground
bus are supplied with links to join shipping sections
together. These should be installed in accordance with
Fig. 9 through Fig. 12.All access covers, barriers,
partitions, etc., that are temporarily removed during
installation must be replaced.
Fig. 10b Torque Specs for Bus Connections
Bolt Size
Torque at Full
Engagement
(ft - lbs)
1/4 - 20
6
3/16 - 18
12
3/8 - 16
18
7/16 - 14
30
1/2 - 13
45
9/16 - 12
68
5/8 - 11
90
3/4 - 10
150
7/8 - 9
240
1.0 - 8
245
Bolt Size
Torque at Full
Engagement
(ft - lbs)
Type of Connection
1/2 - 13
45
Bus - Bus
3/8 - 16
28
Bus - Bus
25
Bus - Glastic Ins.
18
Bus - Porcelain Ins.
5/16 - 18
15
M 12
35

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
8
Fig. 11 Main Bus Splice Connections - 1200A Main Bus
NOTE: Covers and braces supplied only for protection during shipment should not be replaced.
All debris and tools should be removed from each compartment as cabling is completed.
Remove part number identification or any label on the splice bus before installation.
Tighten and torque the bolts for all bus splice connections and other bus if loosened
during installation of the bus splice.
Fig. 12 Main Bus Splice Connections - 2000A
(Consult Factory for 3000A Main Bus Splice)

Basic Installation and Operation Guide
JK 400 Series Fixed Controllers
TOSHIBA
9
Incoming Line
On the standard JK, incoming power cable connections should
be made at the points shown on the wiring diagram furnished
with the equipment.These connections will normally be made in
a separate incoming compartment to bus lugs, an incoming load
interrupter switch, or a vacuum circuit breaker. If the equipment is
a single controller (e.g. 1-High, JKSSS, RVAT) and no incoming
section is provided, the incoming main power terminations are in
the rear bus compartment (Fig. 13), behind the low voltage
compartment swing out panel. The terminations can be accessed
through this compartment or by removing the enclosure rear cover.
The bottom incoming cable entrance location is also shown in
Figure 13.
Load Connections
Outgoing load connections are made in the controller
compartment to the three lugs or copper pads located as shown in
Figure 14a and 14b. Fig. 13 Single Controller Incoming Wiring,
Bottom Entry
Load cable termination arrangements for
certain controllers, such as reduced voltage
autotransformer and solid state types, may
differ from those shown in this manual. In
these cases, refer to the drawings furnished
with the equipment.
To access cable termination areas, remove
fuse barriers as shown in Fig. 45, then
remove fuses (see Power Fuses section).
After completing the cable termination and
re-installation of the fuses, re-install the four
vertical and one angle shaped horizontal
fuse barriers and position them per Fig. 45
and 46.
Failure to properly
install fuse barriers
can result in major
equipment damage
and possible
personnel injury.
Fig. 14a Controller Load Wiring Fig. 14b Controller Load Wiring
Bar Type CTs Window Type CTs
When routing and terminating load cables, observe the following:
- Use listed compression connectors suitable for the cable being used.
- Use the 1/2" hardware provided with the controller to attach cable connectors to bus pads. After installation,
torque hardware to 45 ft-lbs.
- After installation, check to see that the minimum clearance (per NEC) is maintained between live parts and
between live parts and ground.
WARNING