GE AKD-6 User manual

GENERA L@ ELECTRTC
GEK-72r01
8-77
INSTRUCTIONS
TYPE AKD-5
tOW VOLTAGE SWITCHGEAR
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GEK-7 2 | 0 l, Low V oh o ge Swifchgeor
CONTENTS
2
INTRODUCTION
RECEIVING, HANDLING, STORAGE 2
Receiving
Handling ........ 4
Removing Shipping Skid ..
Indoor Equipment Only .. 4
Storage 5
DESCRIPTION ... 6
Front Enclosure ... 6
BreakerCompartments.... ......6,7
Bus Compartm€nt . 8
Feeder Cable and Busway Compartment ........ 8
GroundBus.. 9
Outdoor Equipment 9
EQUIPMENT INSTALLATION 10
Prior to Installation 10
Location 10
FoundationRequirements..... 10
Anchoring 11
Assembly of Equipment ........ L2
INTRODUCTION
This book contains instructions for installing, operating
and maintaining AKD-6 Low Voltage Switchgear. It should
be read carefully before installation and initial operation.
For application and specification information, refer to
Bulletin GEA-10279.
Separate publications will be supplied for breakers, re-
lays or other devices not described in this manual.
In addition to instruction books, the following drawings
will be supplied:
l. Front View and Floor Plan drawings. These show
the general arrangement, height, recommended aisle
space, etc.
2. Summary of switchgear equipment. This is a partial
parts list, giving catalog numbers of all breakers, de-
vices, etc.
3. Electrical diagrams (when required).
All of these documents are needed for installation, op-
eration and maintenance of the equipment. They will be
found in a packet inside the auxiliary unit, or in one of the
instrument or breaker compartments.
Breaker Insertion and Removal ..... L6,L7
Breaker Operation 22
TESTING AND INSPECTION
RACKOUT MECHANISM OPERATION ......
KEY INTERLOCKS
For Breakers
For Fuse Rollouts
DOOR INTERLOCKS . . . . .
RACKOUT MECHANISM
PADLOCK DEVICES
MAINTENANCE .
Breaker and Instrument Compartrnents ......
Bus Compartment .
Feeder Cable and Busway Compartment . ....
Overall Switchgear
Paint Refinishing ..
RECEIVING, HANDLING AND STORAGE
RECEIVING
Every package leaving the factory is plainly marked with
case number, requisition number and customer's order
number. If the equipment has been split for shipment, the
unit numbers of the equipment enclosed in each shipping
package are identified.
All equipment leaving the factory is carefully inspected
and packed by personnel experienced in the proper handling
and packing of electrical equipment. Upon receipt of any
apparatus, make an inspection immediately for damage
sustained while en route.
Air circuit breakers are shipped separately in individual
cartons with the breaker in the open position. Circuit
breakers should be unpacked and inspected as soon as
possible after they have been received.
Be sure to inspect devices mounted in compartments in-
side the hinged doors.
If damage is evident, or indication of rough handling
is visible, file a claim for damage at once with the trans-
portation company. Notify the General Electric Company
Sales Office promptly. Information on damaged parts, part
number, case number, requisition number, etc., should ac-
compeny the claim.
22
24
26
26
27
2E
30
30
30
31
31
31
3l
fficse insfruclions do nol pwport lo cover oll delails or vorialions in eguipmenf nor lo provide lor evcry possible con.
tingcncy to b. ,r6t in connec'lion with instsllation, operclion or moinfsnonce. Should luilher inlormalion bc desired or
should parlicvlar problems orisc wfiich crc nof covered sufricicnlly for lhe pvrchoser's purposel, thc maltcr should bc
relcrred lo lhc Gcncrsl Elcclric Compony,

Low V ohage Swifchgeo r, GEK-7 21 0l
The contents of each shipping package are listed on the
Master Packing List. This list indicates the number of the
case in which miscellaneous parts needed to install and
operate the equipment (such as contact lubricant, touch-up
paint, breaker closing devices, etc.) are located If such
items are packed in a switchgear unit instead of a separate
crate, the list will indicate the appropriate unit number in
FRONT VIEIV
which they are stored.
Large items (such as hoist dollies and hoist carriages
used with indoor equipment) will always be shipped in
separate crates or cartons.
To avoid the loss of small parts when unpacking, the
contents of each case should be carefully checked against
the packing list before discarding the packing material;
JACK HEAE
E
U
6
=a NOI FUFNISHED
/l wrrH EoUTPMEN?
/ | rrE 'ABLE 1
t/
6
U
o
tt
v
stoE vtEw
RECOMMENDED METHOD OF JACKING
AFTER SHIPPII{G SKIDS ARE REMOVEO
ROLLEFS MAY 6E USEO TO ROLL
EOUIPMENT PARALLEL TO FRONT ONLY
NOT FUR}{ISHEO
WIYH EOUIPUE}IT
RECOMMENDED METHOD OF LIFTING
HOIST RAIL (FiONT ONLY}
WHETI FUFI{ISHED
FROTIT CHANNEL
FlG. I (0673D0500-265) Methods of Hondling Indoor Equipment

GEK-7 21 01, Low V oh age Swilchgeor
HANDLING
The switchgear units are best handled by crane. Remov-
able lugs are provided on top of the indoor switchgear.
When using a crane for lifting, a cable spreader must be
used to obtain a vertical pull on the lifting lugs, Recom-
mended lifting method is shown in Figure 1.
If practical, the shipping skid should be left on the
equipment until it is at or near its final location.
If crane facilities are not available, the equipment may
be moved into position by means of construction rollers
placed under the shipping skid. Where overhead clearance
is insufficient, the shipping skid may be removed and the
equipment moved by rollers placed under the three channels
under the equipment.
The skid is bolted to the equipment through the anchor
FRONT VIEW
RECOMMENDED
JACKING TIMBER
NOT FURNISHED
VJITH SWGF.
ll
'1 I
-lffill
"^"..) [v_L_\
PARTIAL
FRONT OR REAR VIEW
FON JACKING
RECOMMENDED METHOD OF JACKING
bolt holes used for final installation. The bolts in the rear
of the equipment may be reached by opening the rear doors,
To reach the bolts in the front, the'inner housing in the
bottom breaker compartment must be brought out to the
disconnected position. Fig. 3 shows the front bolt locations,
and the drawout procedure is explained on Pages 16 and 17.
CAUTION: IF THE SKID fI.4S BEEN RE-
MOVED, BE SURE THE ROLLERS USED
ARE SPACED SO THAT THE THREE CHAN-
NEI,S RES? O1V TOP OF THE ROLLERS. A
DIRECT APPLICATION OF THE ROLLERS
BETWEEN THE CHANNELS MAY TEAR OR
DISTORT THE ESUIPMENT,
Jacks may also be used to handle the equipment when a
crane is not available. See Figures 1 and 2.
NOT FUFNISHED
WITH SWGR.
srDE vlEw
METHOD OF LIFTING
JACK HERE
PARTIAL SIDE VIEW
FOR JACI(ING
FlG. 2 (0673D0500-266) Methods of Hondling Outdoor Equipment

Low V oltoge Swilchgeo r, GEK-7 21 0l
Methods of handling outdoor switchgear, shown in Fig-
ure 2,.are much the same as for indoor equipments except
that lifting plates are provided at the base of the structure.
The lifting plates should be removed after the equipment
is permanently anchored so that passageway at the ends
of the equipment will not be obstructed.
Store the circuit breakers in a clean, dry location in an
upright position. They must be properly supported to pre-
vent bending of the studs or damage to any of the breaker
parts. Do not remove any protective grease until they are
ready to be installed. A covering of kraft or other non-
absorbent paper will prevent dust from settling on the
breakers.
STORAGE
If breakers are not to be placed in service at once, remove
them from their shipping cartons and thoroughly inspect
them. If ever5rthing is in satisfactory condition, replace the
breakers in their shipping cartons for storage, Do not re-
(0673D0500-265) Locotion of skid bolts (ond onchor bohs)
in front of lndoor Equipment
move the shipping members at this time.
If it is necessary to store the equipment for any length
of time, the following precautions should be taken to pre-
vent corrosion or deterioration.
1. IJncrate the equipment. Check thoroughly for damage.
2. Store in a clean, dry, rodent free location with moderate
temperature and provide protective coverings'to pre-
vent dirt, water, or other foreign substances from enter-
ing the switchgear.
3. If dampness or condensation may be encountered in
the storage location, heaters must be placed inside the
units to prevent moisture damage. Approximately 250
watts of heat in each unit is required. On outdoor
switchgear this may be accomplished by making a
temporary power supply connection to the heaters al-
ready installed in the equipment.
CAUT|ON: REMOVE ALL CAR?OJVS AND
OTHER MISCELLANEOUS PACKING MA-
TERIAL FROM IJVS/DE THE UNITS BEFORE
ENERGIZING ANY HEATERS.
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FULL
HEIGHT
WIRE
TROUG
WHEN
WIREWAY,
BREAKER OR
INSTRUMENT
COMMRTMENT.
A
. MENT
I
CAB-E
BREAKER
COMPARTMENT
B
BREAKER
COMPARTMENT.
c
FIG. 3FlG. 4 (0148A5073-0) Side View showing Comporrmentorion

GEK-7 21 01, Low Y oltage Swifchgeor
LOAD CENTER UNIT SUBSTATION
PRIMARY SECTIOI{
SI{IPPIIG ilCKAGE
General Electric AKD-6 Low Voltage Switchgear is a
free-standing assembly of metal-enclosed units of Power
Circuit Breakers and other auxiliary power circuit protec-
tive devices. It may also be a part of a single-ended or
double-ended Load Center Unit Substation.
Figure 4 is an outline of a side view of a typical unit
showing compartmentation, and Figure 5 is an outline of
a typical single-ended Load Center Unit Substation illus-
trating the nomenclature used for all equipment.
All of the switching and protective devices, control and
metering devices, control fuses and instrument trans-
formers are mounted in the enclosure. The breaker positions
are all of the drawout type. The breakers are provided with
self -coupling primary and secondary disconnecting contacts
and incorporate positive and indirect interlocks to insure
proper operating sequence. Each of the individual units,
compartments and devices is described in the following
paragraphs.
LOW VOLTAGE SECTION
ol5
FRONT ENCLOSURE
The front enclosure of each unit is divided into in-
dividual compartments. These compartments either house
a power circuit breaker or are used to mount instruments
and other protective devices and control components.
BREAKER COMPARTMENTS_AK BREAKERS_
MOUNTING CODE 2A, 3A, 4A, OR 5A
These breakers are supported within their compartments
by a rollout track which is part of the drawout mechanism
attached to the sides of the compartment. See Figure 6.
The drawout mechanism is shown in an exploded view,
Figure 19, and its operation is explained in detail under
"Drawout Mechanism Operation,"
SHIPPING PACKAGE SHIPPING PACKAGE
REAKER
UNITS
or3
FlG. 5 (0102C5207-O Outline of o typicol lood Cenfer Unit
Substqtion showing nomenclqture
DESCRIPTION

low Voftoge Swifchgeo r, GEK-721 0l
BREAKER COMPARTMENTS_AKR, AKRU, AKRT
BREAKERS-MOUNTING CODE 3A, 4A OR 5A
These breakers are supported on a rollout track in the
same manner as the AK breakers. However, since the
rackout mechanism is mounted on the breaker, there are
no jackshafts in the enclosure. See Figure 7. Racking arms
on both sides of the breaker frame engage the drawout
mechanism pins fastened to both sides of the compartment.
Note that extra items shown in Figures 6 and 7 (such as
secondary disconnects, position switches and ground sensor
secondary disconnects) may appear in any compartment
or not be included at all,.depending on the equipment spec-
ified. Also note that the bracing for the primary disconnects
shown in Figure 7 may be a single piece of insulating
material instead of three separate pieces.
A stop link is located on each side of all AK breaker
compartments. These links prevent an operator from manu-
ally pushing a breaker set on the tracks all the way into
the compartment when the racking mechanism is in the
connected position. In a compartment made for AKR
breakers, the latches that rest on the drawout mechanism
pins prevent the inner house from being manually moved
all the way into the compartment when no breaker is
set on the tracks.
All AK or AKR circuit breakers of the same type and
SECONDARY
DISCONNECTS
KEY INTERLOCK
TRACK LOCK
LINK
ROLLOUT
OPERA
SHAFT
INDICATOR
CURRENT
TRANSFORMER
rating which have duplicate wiring may be interchanged.
Each breaker compartment has four positions. They are
illustrated in Figure 18 and described below.
1. CONNECIED POSIIION-The breaker is in operating
position, both primary and secondary contacts made
and the door closed.
2. TESI POSITION-The primary contacts are separated by
a safe distance, but the secondary contacts are made.
Any breaker test not involving power may be made
in this position. The door may be closed in this posi-
tion, and must be closed before charging the spring
on a manually operated AKR breaker because an open
door will interfere with the breaker handle travel.
3. DISCONNECIED POSITION-Neither the primary nor the
secondary contacts are made, The door may be closed.
4. WITHDRAWN POSITION-The breaker is completely
out of its compartment ready for removal from the
equipment. The door must be open.
NOTE: ALTHOUGH THE BREAKER COM.
PARTMENT DOOR IUTAY BE OPENED IN
ANY POSITIOJV,Ijr IS RECOMMENDED THAT
THE DOOR ONLY BE OPENED WHEN THE
BREAKER /S IiY THE DISCOIVJVECT OR
WITHDRAWN POSITION.
CAUTION: NEVER OPEN THE BREAKER
DOOR WHEN THE BREAKER 'S CLOSED
AND IN THE CONNECTED POSITION.
STOP LINK
ROLLOUT
TRACK
JACK
SHAFT
CHAIN COVER
GROUND SENSOR
SECONDARY DISCONNECT
HA, 6 $012645) Typicol AK breoker comporlmenl

GEK-721 01, Low V oltage Swifchgeor
SECONDARY
DISCONNECTS
INNER HOUSE
PADLOCK DEVICE
INDICATOR
STOP LINK
KEY INTERLOCK
DRAWOUT MECHANISM
PIN
KEY INTERLOCK SLIDE
TRACK LOCK LINK
CURRENT
TRANSFORMER
ROLLOUT TRACK
GROUND SENSOR
SECONDARY DISCONNEC
POSITION SWITCH
AND COVER
COVER REQ'D. IN FUSED
BRKR. COMPT. ONLY
AMMETER
SWITCH
AMMETER
ULUJE
FUSES
INDICATING
LIGHTS
TEST
SWITCHES
TRIP
FUSES
{ ooon
- INTERLOCK
iir
FlG. 7 (8041 585) Typicol AKR breoker comportmenl
BUS COMPARTMENT
The bus compartment, between the front enclosure and
the rear cable compartment, contains all of the bus and
necessary bus supports for a particular section. This bus
compartment is isolated from the breaker and instrument
compartments by barriers. Isolation barriers between the
bus and cable compartments are optional. A typical ar-
rangement with an all-welded aluminum bus is shown in
Figure 8. Bolts are used for supports or at connections
which must be made in the field. Bolted copper buses are
optional.
On main breaker and tie breaker units the bus compart-
ment may be divided into an upper and lower section by
an optional isolation barrier. For main breakers, the upper
section contains the incoming line bus, fed from the bus
connections in the auxiliary unit, while the lower section
contains the main bus which connects with the other units.
Optional barriers at tie breakers isolate the two main bus
sections from each other.
Aluminum buses run continuouslv from one unit to
another. At shipping splits, or where connections are to be
made to other equipment during installation, provision
is mad" for a bolted joint. Copper buses have bolted joints
between each unit.
FEEDER CABLE AND BUSWAY COMPARTMENT
The rear cable and terminal compartment provides ade-
quate room for cable installation. Straight cable runs can
be made from the bars at the load side of the feeder
breakers to conduits entering above or below. Various
arrangements of single or double cable terminals are pro-
vided, depending upon the purchaser's requirements. One
typical terminal arrangement is shown in Figure 9,
An add-on unit, 18 inches deep, is available for extending
the cable compartment of the 22 inch wide unit. The com-
partment is extended when more than two busway runs
from above or below are used, and also when tlre quantity
of conduits leaving the unit cannot be accommodated in
the normal available space.

Low Voltoge Switchgeo r, GEK-72101
FlG, 8 (8042652) Bus ComDorfment
Conduits for large cables should be near the rear of the
cable compartment to provide space for bending these
cables as necessary.
Beside power cable connections, some equipments in-
clude an enclosed wiring trough on the left side (rear view)
of the cable compartment, providing for control circuit
connections. Terminal boards are provided in this trough
for making control wiring connections during installation.
A neutral bus is provided in the cable compartment on
switchgear designed for four wire systems. It consists of
bars with plated connection areas, and is installed at either
a height of about 18 inches from the floor or at about 6
feet. In most equipments the neutral bus is insulated from
ground.
GROUND BUS
CAUTION: IT IS VERY IMPORTANT THAT
ESUIPMENT BE ADEQUATELY GROUNDED
FOR SAFETY.
FlG. 9 $042651) Typicol Terminql Arrongement in o 4-high unir
The ground bus is bolted to the rear of the cable com-
partment near the bottom. A 4/0 connector is included on
each equipment for making the connection to the station
ground. A recommended location for this connection is
shown on the floor plan drawing.
Where AKD-6 switchgear is shipped in more than one
package, the ground bus must be connected at the ship-
ping splits.
OUTDOOR EQUIPMENT
Outdoor switchgear is constructed as a basic indoor
equipment completely enclosed in a weatherproof housing
with a walk-in front aisle, Figure 10. Space heaters are
provided in all outdoor equipments. There is one 115v. ac
250 watt heater located in the bus compartment of each
unit. These heaters should be energized at all times to
reduce condensation in the equipment.

GEK-7 21 0 1, Low V olt oge Swif chgeor
FfG. t0 $012659) Typicol Outdoor Shipping Section
EQUIPMENT INSTAIIATION
PRIOR TO INSTAII.ATION
Before any installation work is performed, study all
drawings furnished by G.E. Co. for the particular installa-
tion. These include arrangement drawings (front and plan
view), connection and elementary diagrams, installation
drawings and a summary of the equipment. When request-
ing information from the factory on any specific item
furnished with the equipment, refer to the item by sum-
mary and identification number wherever possible, Any
material external to the equipment which may be required
to meet local codes (such as mats, screens, railings, etc.)
is not furnished.
LOCATION
In locating AKD-6 switchgear, provide adequate aisle
space at the front and rear of the equipment, The recom-
mended aisle space is shown on the floor plan drawing,
and is in accordance with N.E.C. Article 110. Local codes
should be checked for any special aisle requirements.
The equipment should be placed in an area where clean
air is free to circulate around and above it. Since air is
taken into the units at the bottom and is exhausted at the
top, a location with good air flow will provide more effi-
cient operation.
FOUNDATION REQUIREMENTS
Indoor Equipment-Suitable means must be provided by
the purchaser for mounting and anchoring the switchgear
to the floor.
CAUTION: IF THE FOUNDATIO]V IS SUA-
] ECT TO V I B RATIONS, SPECIAL MOU NTING
MUST BE PROVIDED TO PREVENT THE
TRANSMITTAL OF VIBRATIONS TO THE
ESUIPMENT.
Although the equipment is furnished with built-in chan-
nels so that it can be mounted directly on a smooth, level
floor, it is recommended that recessed steel channels be
installed by the purchaser for supporting the equipment.
The floor channels under the front and rear switchgear
channels should be embedded in a level concrete slab with
their top surfaces flush with the finished floor. It is es-
sential that these steel channels be level and aligned with
each other prior to final anchoring, and that the center
switchgear channel be supported by the finish floor to avoid
distortion of the switchgear structure, If the gear is raised
above the floor level by the mounting channels, the center
switchgear channel must be supported at the same level.
If other equipment is installed in the same lineup, all
channels must be level and aligned with each other.
l0

Low Y oltoge Swifchgeo r, GEK-7 21 0I
FLOOR STEEL TO BE DRILLEO
ANO TAPPEO (BEFOBE OR AFT€R
STEEL lS [{ PLACE), OR WELo
NUTS MAY 8E USEO.
14 0lA. ANCHOA
BOLT
PAD
FINISH
SURFACE
METHOD OF ANCHORING
ANCHOR SOLTS. FLOOR CHANNEIS. AiiO
SHIMS BY PUBCHASER.
FOUNDATION DATA
EOUIPMENT IS FURNISH€O WITH AUILT.IN CHANNELS.
EMAEODEO CHANTIELS SHOULD BE SET LEVEL WITH
EACH OTH€R AflD SHOULD 8E LEVEL OVER THEIR
ENTIRE LEflGTH. CENTER CHANilEL MUST B€
SUPPORTED. Vr THK. FOFM€D CHAilNELS ARE
F€COMMENDED FOR IEVELI'{G PUNPOSES,
FINISH FLOOR SHOULO HAVE SLIGHT PITCH AWAY
FROM MOUNTING CHAtrXELS AiIO IN NO CASE SHOULD
THE FINISH FLOOR BE HIGHER THAN MOUNTIflG
CHANilELS.
ALTEANATE METHOO OF
ANCXORING
FlG. t | (0673D0500-265) Foundotion for lndoor Equipment.
Anchor bolts, floor steel ond olher foundotion moteriol furnished
by purchoser
Recommended method of embedding channels and
mounting the switchgear to the foundation is shown in
Figure 11. This information is also sent to the purchaser
with other requisition drawings.
Outdoor Equipment-Recommended method of embed-
ding channels and mounting the switchgear to the fouqda-
tion is shown in Figure 12. Otherwise, comments under
Indoor Equipment apply. Outdoor equipment also has a
center channel in the floor frame which must be supported
by the pad or other means.
ANCHORING
The switchgear should be mounted on top of the channels
as shown in Figures 11 and 12 and securely anchord to
them.
METHOD OF ANCHORING
ANCHOR BOLTS. FLOOF CHANNELS T SHIMS
BY PURCBASEN
SIOE VIEW OF FLOOR FRAME
SHOWING SEARII{G SURF^CES OF
FRONT, REAR AiIO C€NTER CHAITIIELS
FOUNDATION DATA
EOUIPMEXT IS FUFNISHEO IVITH EUILT-II{ FLOOE FNAI'E.
EMBEODEO CHANNELS SHOULO BE SEI LEVEL WIT}
€ACH OTH€R ANO SHOULO 5E LEVEL OVER THEIA
EilTINE LEflGTH. CENTER CHANN€L MUST BE SUPPORTEO.
y. IHICK FORMEO CHANNELS ARE AECOMMET{OEO FOn
LEVELING PURPOSES. FINISH PAD SHOULO HAVE SLIGHT
PITCH AWAY FROM MOUN'ING CHANTELS A'{O IN '{O
CAS€ SHOULD IHE FINISH PAO BE HIGHER
THAN MOUNTII{G CXANNELS.
FlG. t2 (0673D0500-266) Foundqtion for Outdoor Equipment.
Anchor bolts, floor sfeel ond other foundolion moteriol furnished
oy purchoser
There are two methods of anchoring indoor equipment
to the channels. One is to use lz inch anchor bolts through
the holes provided in the bottom of the €quipment as
shown in the floor plan. Another is to tack weld the bottom
channels of the equipment to the foundation channels.
Two suggested methods for anchoring outdoor AKD-6
switchgear are illustrated in Figure 12. Both use an anchor
bolt and floor clamp to secure the supporting channel to
the foundation.
NOTE: DO NOT BOLT ORWELDTHE EQUIP-
MENT TO THE FLOOR CHANNELS UNTIL
THE SHIPPING PACKAGES HAVB BEEN
BOLTED TOGETHER .4S DESCRIBED
UNDER "ASSEMBLY OF ESUIPMENT."
ll
- INSERI

GEK-721 01, Low V oltoge Swifchgeor
ASSEMBLY OF EQUIPMENT
Before assembly of the equipment is begun all com-
ponents should be on hand to facilitate installation. The
individual shipping packages must be connected togefher
on the foundation. If there is no transformer in the lineup
and the equipment has been split for shipment, place the
middle package on the foundation first and assemble in
both directions. If the equipment is part of a Load Center
Unit Substation. the transformer section should be set on
its pad in accordance with the instructions furnished with
the transformer, and then packages of equipment added.
NOTE: WHEN AKD-6 SWITCHGEIR IS IN-
STALLED IN THE SAME LINEUP WITH
TRAIVSFORM E RS AND OTHE R EqU I PM E NT,
IT IS IMPERATIVE THAT ALL MOUNTING
SURF.ACES BE LEVEL.
Proceed to assemble the equipment as follows:
1. The switchgear packages should be placed on the
foundation with the aid of cranes or jacks as shown in
Figure I for indoor equipment or Figure 2 for outdoor
equipment.
2. For Indoor Equipment, the packages should be fas-
tened together at the shipping splits by bolting the front
and rear upright channels together. Use 3/a-16 hardware
furnished with the equipment at the end of the packages,
Ilta transformer is in the lineup, hardware for connecting
the flange to the switchgear is supplied with the equipment.
3, For Outdoor Equipment, remove the lifting plates
from front and fear of the switchgear base at both ends of
the shipping split joint and assemble the front and rear
splice plates as shown in Figure 14.
When joining shipping packages, special procedures for
weather-proofing must be followed as indicated in Figure
14. The joint in the roof at shipping splits must be weather-
proofed, This is done as shown in Figure 14 by placing a
rubber seal on each side of the top edge of the roof sup-
port batten so that the roof sections butt up against this
seal on both sides. Bolt this joint togeher, using 7a-16
hardwaie. A roof cap is placed over this seam and held in
place by the roof trim. Joints between transformer throat
and switchgear and between shipping splits must be
weather-proofed as shown in Figure 14. Install a front and
rear batten and rubber seal at the shipping split joints and
bolt them together with the furnished 3/e-16 hardware.
The gasket for an outdoor transformer is furnished with
the transformer, and hardware for connecting the trans-
former flange to the switchgear is supplied with the equip-
ment. Check alignment of doors on the outdoor equipment
to see that the weatherproof seal has not been disturbed.
4, Bolt the main buses, ground buses, and neutral buses
of adjacent shipping packages together using the splice
bars furnished with the equipment. See Figure 13 and 14
for details of splice bar connections. The ground bus is
mounted directly on the rear upright channels, It is par-
ticularly important that this bus be connected since it pro-
vides an integral ground for all the equipment that should
be connected to the station ground. Neutral buses are
mounted on molded insulators that are attached to the
rear upright channels. If a transformer is present in the
Iineup, make the necessary connections from the equipment
to the flexible connectors furnished with the transformer as
shown in Figures 13 and 14. Connection hardware is sup-
plied with the equipment. The ground connection bar in
the bus'entrance compartment will be shipped turned in.
This bar should be reassembled in the correct position and
connected at the offset portion to the transformer ground
pad with a 1/z inch bolt. Consult transforiner instructions
for proper connection procedure.
All bolted bus joints should be made up using the proper
torque values as shown in Table A.
5. Bolt or weld the equipment to the foundation as
specified under "Anchoring."
6. All shipping supports must be removed from the
switchgear. These are painted yellow.
7. Busway runs must be lined up and connected to the
equipment. Hardware for this joint is furnished with the
busway.
8. Connect control cables between units at the shipping
splits. A tag at the top of the unit adjacent to the split
will indicate where the wires that cross the split are
located. These wires are all tagged and should be laid
across the split and connected to the shipping split terminal
blocks as indicated.
9. Connect control cables to the switchgear unit as follows:
a. When control conduits enter the switchgear from
below, they should not extend more than one inch
above the floor. The control cables may be pulled
through the conduits before or after the switchgear
is installed.
b. Route the control cables from the conduits through
the wiring trough at the side of the cable compart-
ment and connect the cables to the terminal blocks
in accordance with the connection diagrams for the
equipment.
c. If the control conduits enter from above, drill the
top cover within the available space indicated. Con-
trol cables should be routed to the wiring trough
and connected to the terminal blocks as above.
10. Connect the main cables to the units. Before any
main cable connections are made, the cables should be
identified to indicate their phase relationship with equip-
ment. Adequate electrical and mechanical clearances must
be provided between conduits, cables and bus. Where the
cables enter the unit, they can be lashed to cable supports
at the rear of the cable compartment as required. See
Figure 9.
Cable terminals are included with the switchgear, and
are mounted at the ends of the bars in the cable compart-
ment. Check to see that the proper size and quantity of
terminals are located at each connection point, and that
they are positioned correctly to receive cables coming from
above or below. In all cases, carefully follow the cable
manufacturer's recommendations for installation of cable,
as well as the instructions contained in this book.
12

Low Vohoge Swifchgeor, GEK-72101
It is imperative that all cables be adequately supported
to take their weight off terminals and studs, and to prevent
movement during short circuit.
Train the cables in the proper path to the terminals, using
temporary lashing if required, and cut to the proper length.
Strip the insulation to the desired dimension, being careful
not to damage any strands.
For copper cables, coat the cables with D50H47 grease,
insert the cables into the terminals and tighten the set
screws in accordance with values shown in Table B.
For aluminum cables. wire brush the cable strands
thoroughly. Immediately after wire brushing, coat the cable
strands with a quality oxide inhibiting compound such as
Penetrox A. (or other similar oxide inhibiting compound).
Insert cables into the terminals and tighten the set screws
in accordance with values shown in Table B. This should
result in the oozing of compound from between individual
strands. Wipe off the excess compound.
Bolt the cable terminal connectors to the ends of the bars
in the cable compartment. A non-oxidizing lubricant (such
as D50H47 furnished with each equipment) can be used at
these connection surfaces,
Lash the cables permanently to the cable supports.
11. Remove the lifting brackets from the front and rear
channels. If equipment is furnished with "add-on" com-
partments, brackets at the rear cannot be removed.
And
Flat Washer
1A_20
'll.s- 16
Yz-13
5/8_tl
12. Remove all blocking on relays and devlces.
13. Make a finai inspection to see that there are no tools,
construction materials, or other foreign matter left in the
switchgear.
TABTE B
TORQUE VALUES FOR CABLE TERMINALS
Wire
Size
6
Inch-
Pounds
100
100
100
Wire
Size
350,000
400,000
500,000
600,000
700,000
7s0,000
800,000
900,000
1,000,000
Inch-
Pounds
250
250
3
I
000
0000
200,000
250,000
300,000
1,250,000
1,500,000
1,750,000
2,000,000
0
00 150 150
125
tzJ
125
200
200
200
250
250
300
300
300
300
400
400
400
500
500
500
500
TABTE A
TORQUE VALUES FOR LOW VOLTAGE EQUIPMENT HARDWARE
(COPPER OR ALUMINUM)
Bolt
Size Foot Pounds
With Prevailin{
Totque Locknut
With Finished Machine Nut ical Sprin( Washer
And Flat Washer
Washer And
FIat Washer Or
Flat Washer OnIy
10
30
42
J)
l3

GEK-7 21 01, Low V oltoge Swifchgeor
TILT FRONT OF HOIST UP TO ASSEMSLE
1-Zr DlA. ROLLER UNOER FLANGE Or
CHANNEL. THEN LOWER FRONT ROLLEAS
TO RAIL.
NEUTRAL SPLICE (SEE VIEW.D)
REMOVE NUT.
LIfiING PLATE
ANO SPACER.
AOLT STAYS IN
PLAC€.
LOWERIT{G SOTTOM SHIELOS
/-7 sPLtcE EARS -
SPLTCE BARS
It //
-r\\- J-{/ ..1---
'|+\ }.....I.'+-+
sPLrcE (sEE VTEW.D)
3
GROUNO
8US
SPLICE
3 {SEE vlEw "G")
yJ/-," MAIN BUS
SPLICE (SEE
I
A- t RACK LOWER BREAKER COMPARTMFNT
/ .I/ IO OISCONNECT POSITION TO RECEIVE
/ - ANCHOR BOLTS
lf PfHwlofJlH*il" *
--;-5-"- rNsuLAToR
u--tt--n
ill
r Jll
npen or rnlues J--
VIEW D
NEUTRAL BUS SPLICE
vrEtv G
GROUITD BUS SPLIC€
R€MOVING LIFTING
PLATES AilD SPACERS
SloE SHEET --\ 8 FT. t0 lH-
<-4r
ilt \
AFTER EOUIPMENT IS SET IN PLACE I II \
REMovE (2) #10.32 SELF-TAP I ll #10-32 SELF-TAP scnEws \
SCNEWS AND LOWER EOTTOM III ' \
SHIELD To FLoon LrN€. )ll 1 lt
R€^SSEMBL€ rHE (2) SELF- -{++z /
TAP SCREWS. -J II - SOTTOM SHTELD
llt-P
EIL
r sAR BUS 2 8AR BUS 3 AAR AUS
HAROWAFE-v, 8OLTS. NUTS. CoNICAL ANo FLAT WASHEnS
vlEw "F"
MAIN BUS SPLICE
NOTES
I ALL SHIPPING SPLIT HARDWARE TO 8E
OISASSEMBLEO BEFORE AOJACENT
SHIPPING PACKAGES ARE SET IN PLACE,
NEASSEMBLE TO SECURE SHIPPING SPLIT.
2 AUXILIABY UNIT OR AUXILIARY UNIT
ADAPTEH TOP COVER ANO (2) REAR COV€RS
MUST 8E REMOVEO FOR CONNECTION TO
TRANSFORMER.
3 GROUND BUS SPLICE ANO HAROWARE WILL 8E
NORMALLY SHIPPEO ASSEMSLEO TO EITHER
SIOE OF AOJACENI SHIPPING PACKAGES.
NEUTRAL SPLICE, HAROWARE AND INSULATOFS
(WHEN FURNISHEOI WILL AE NORMALLY S}IIPPEO
ASSEMBLED TO EI'HER SIOE OF ADJACENT
SHIPPING PACKAGES.
coHDUCroR >,
-....fulid4,a
i?rr?r,r " ti}{-il h r^F 38*'o'r3"o"n*
il[%*
Typtc^LrTlrNsFoFM€R /*
./- Tr3 FLAr wAsHERs
//
/l
/\
--
6ft\,fr c srrn usrEss
ill
r._JlL_-,l
-
--\.* REAR oF FRAME.
t4
FlG. l3 (0673D0500-265) Assembly of Indoor Equipment

Low Voltoge Swilchgeo r, GEK-72101
SPACEF 1
,('El*'
/&ll \> J<
Horsr - " ll
CR^NK 'Utl
ENLARGEO VIEW.C
(BEASSEMELE AS SHOWN)
+T.16 HARDWARE
oTY.5OR7 -
DrscARD 96_16 NUTS
Ilot-'r-Elq,-ll1Ff'|f e
&r*pH*- ifir l.-Jl
^lttr"t l:-l ll sEr
/v llL-l llo. I r/ ENLAR
,,1,, I l^l J - vrEw
/u lrfl llo. | / eM]
t ',!o' I l,l I - vrE
90R10%-16 lt rl ' t
aolTs. WASHERS Lol :o I
A LKW EACH I I II
srDE FLANGE iio lol I ll0
"- ,/r. i'
I
TRANSFoRMER FLANGE mli
aos -f J
CRANK ,LJ . .
"otorrv
\l
)alll
Ypwll'.3..3n
r [-k llll^Gd 3gl,"ltio.,*''
' coNrcAL llll^^
WASHER llll '/ )^
llll ,/0- *f 'll$ow^ae
\{.
TYPICAL TRANSFOBIIER
CONNECTION
, /.spLtcE sAn /spltcE gARs ,SpLtCE SABS
':-ts.===- ry # SECTION D-D
WPICAL. FRONT OF REAR AFTER
AOJAC€NT SHIPPING PACKAGES
ARE SECURE.
STAR WASHEFS
.BATTEN
I ROOF cAP
I ROOF CAP TBIM
SECTION E.E
AFTER ADJACENT SHIPPING
PACKAGES ARE SECURE
REMOVE SHIPPING
suPPoRrs (YELLOW)
RUBSEN SEAL 'l
'331E'
I
I
r ilc:
" lu
i
.flliF,".f..
I
I
== i =
=i i =
!i
--i
] TFANS
OPEN I NG
il i rRANS -l
r. L SHIELOS' I
t:--.-
PAD
FINISH
SURFACE
I AAB BUS 2 BAR BUS
NEMOVE
LIFTING PLA'E
3 8AN BUS
;-At-
Tg-P )
/
REMOVE
LIFTING PLATE I
ASSEMBLE SPLICE
PLATES FRONT AND
NEAR
I
/,1- SHtPPtNG
q SPLIT
I
HAROWARE % BOLTS, NUTS, CONICAL AND FLAT WASHERS
vtEw,.F..
MAIN BUS SPLICE
NOTES
1 ALL SHIPPING SPLIT HAROWARE.
AANENS. ROOF RU88ER GASKET, FOOF CAP,
FRONT ANO REAR ROOF CAP TRIM
TO 8E DISASSEI/BLEO BEFOBE AOJACENT
SHIPPING PACKAGES ARE SET IN PLAC€.
REASSEMALE TO SECURE SHIPPING SPLIT,
2 GNOUNO BUs SPLICE AND HARDWABE WILL AE
NOFMALLY SHIPPED ASSEMELEO TO ETTHER
SIDE OF AOJACENT SHIPPING PACKAGES,
NEUTRAL SPLICE, INSULATORS ANO HAAOWARE
(WHEN FUBNISHED) WILL BE NORMALLY
SHIPPEO ASSEMSLEO TO EITHER SIOE OF
ADJACENT SHIPPING PACKAGES
F PPHw'^t?tH^"'jl\ .-T BoRBT."iX,o*
/^\ / Fr ar wAsHERs
,/ \l
//\
B€AR OF
FBAMES
i1-
FfG. f 4 @673DO500-266) Assembly of Ourdoor Equipmenr
VIEW H
NEUTRAL 8US SPLICE
t5

GEK-721 01, Low V oltoge Swifchgeor
ASSEMBLY OF EQUIPMENT (coni.)
14. Install the breaker hoist. When supplied with indoor
equipment, this is shipped completely assembled in a sep-
arate carton. To install it, remove the lifting plates from
the front of the equipment. Lift the hoist into position on
top of the switchgear so that the end with the single roller
is toward the rear of the equipment. A channel is provided
on the top of the equipment which serves as the track for
the single wheel on the rear of the hoist assembly. If space
is available at the end of the equipment, the hoist may be
assembled by sliding the rear wheel under the top leg of
the channel and then lifting the front end of the hoist over
the stop clip and positioning the front wheels so that they
will straddle the tapered front track. If space at the ends
of the equipment is restricted, the angle which is bolted to
the hoist side frames immediately in front of the single
rear roller must be removed. The rear wheel can then be
hooked under the channel and the front wheels can be
positioned on the front track. The retaining angle at the
rear should then be reassembled. Stop clips are provided
at each end of the front track to prevent the hoist from
riding off the ends of the track.
When a hoist is provided with outdoor equipment, it is
shipped mounted and secured in place. The yellow ship-
ping supports at either end of the hoist movable track must
be removed as shown in Figure 14. To free the hoist dolly,
remove the wire that is used to keep it in place during
shipment.
15. Before placing breakers in the equipment, check each
breaker compartment for bolted joints in the primary dis-
connect bars. Where such joints exist, check the bolts for
tightness, Refer to Table A for the proper torque values.
Also check the contact areas on each primary disconnect
bar or cluster of fingers for foreign matter that may have
accumulated. Clean these areas if necessary. Be sure that
a thin film of D50H47 grease covers the contact areas
before putting a breaker in the compartment.
Check to see that the breakers match their respective
compartments. Each breaker is assigned a part or mark
number. This number is shown on the breaker sheets of
the summary, the front view drawings, the breaker name-
plate, ahd on the identification card on the breaker ship-
^:-- ^^+^-
Prrrli Lar Lwrr.
To locate the breaker in the proper compartment, refer
to the breaker location list on the front view drawing. Find
the proper breaker by the identification card on the breaker
carton, or the mark number on the breaker nameplate. All
identical breakers will have the same mark number.
BREAKER INSERTION
Before installing or operating a breaker, refer to the
breaker instruction manual for preoperation inspection and
test. Check thoroughly for any damaged or loose parts and
for any dirt or foreign matter which may be in the breaker.
Be sure that a thin film of D50H47 grease is present on
disconnects before installine the breaker.
HOISTING AND INSERTING AK BREAKERS
With the inner housing in the compartment in the CON-
NECTED position, proceed as follows:
1. Put the breaker in front of the unit in which it is to
be installed. Be sure it is tripped.
2. Insert handle on jackscrew shaft located on left hand
side of compartment.
3. Rotate handle counter-clockwise until jackscrew is
stopped. (Indicator should read DISC). Inner house is now
in the DISCONNECTED position.
4. Remove handle and open compartment door.
5. Rotate the two track lock links and pull the right
track to the limit of its travel. See Figure 16A.
6. Pay out enough hoist cable to place the hooks in the
slots on the breaker side frames. See Figure 168.
CAUTION: DO NOT UNWIND CABLE COM-
PLETELY FROM DRUM. OPERATING
CRANK MUST TURN CLOCKWISE TO HOIST
THE BREAKER, COUNTER.CLOCKWISE TO
LOWER IT.
7. Place the cable eye just under the ball nearest the
hoist (fourth ball from the hooks) and take the slack out
of the cable with the hoist. See Fieure 16C.
WARNING: DO NOT STATTD UNDER BREAKER
DU RI N G TlOlSTlNG OPE RATION.
8. Raise the breaker until the breaker mounting pins are
approximately one inch above the tracks. See Figure l6D.
9. Pull the remaining track out to the limit of its travel
and lower breaker so the breaker mounting pins drop into
the slots in the track. Remove the liftins device. See Fie-
ures 16E and F.
10. Push the breaker in against the track stops. Rotate
the two track lock links to lock the breaker in place. Close
the compartment door. See Figure 16G.
11. Insert handle on jackscrew shaft and rotate clockwise
to move breaker into the compartment. Breaker is in CON-
NECTED position when jackscrew can no longer be ro-
tated. (Indicator should read CONN).
'16

Low V oltoge Swifchgeo r, GEK-7 21 01
HOISTING AND INSERTING AKR AND AKRU BREAKERS
With the inner housing in the compartment in the CON-
NECTED position proceed as follows:
l. Put the breaker in front of the unit in which it is to
be installed. Be sure it is tripped.
2. Open the compartment door and remove the bolt with
the yellow head and the shipping tag from the track as-
sembly. Discard the bolt and tag.
3. Pull inner house forward as far as possible. It is now
in the DISCONNECTED position.
4. Rotate the two track lock links, and pull the right
track all the way forward. See Figure 16.{.
5. These breakers require a spreader bar when hoisting
them to avoid damaging their arc chutes. For hoisting,
there are two slots in each of the breaker's side frames.
When hoisting the non-fused breaker, the spreader bar's
hooks are positioned in the forward slots. When hoisting
the fused breaker, the hooks are positioned in the rear slots.
Pay out enough hoist cable to install one hook in the
hole in the center of the spreader bar. Figure 17 shows a
fused breaker, spreader bar and hoist cable.
CAUTION: DO NOT UNWIND CABLE COM-
PLETELY FROM DRUM, OPERATING
CRANK MUST TURN CLOCKWISE TO HOIST
THE BREAKER: COUNTER.CLOCKWISE TO
LOWER IT.
6. Raise the breaker until the breaker mounting pins are
approximately one inch above the tracks. See Figure 16D.
WARNING: DO NOT ST/ND UNDER BREAKER
DU RI NG HOISTING OPERATION.
7. Pull the remaining track out to the limit of its travel
and lower breaker so the breaker mounting pins drop into
the slots in the track. Remove the lifting device. See Fig-
ures 16E and F.
CAUTfON: THE TRACKS OF /NNER FiOUSES
FOR/KR BREAKERS ARE ESUIPPED WITH
P/ITTS SO THAT BRE,4KERS OF AN INCOR-
RECT RATING CANNOT BE SET ON THE
TRACKS. THIS PREVEITTS /TTSERTION OF
A LOWER RATED BREAKER IN A COM-
PARTMENT.
8. Engage the racking handle. This is done by pushing the
trip button in the breaker escutcheon, sliding the cover
below it to the right, and inserting the handle on the jack-
shaft.
9. Turn the handle counter-clockwise as far as it will go
(if it will move in that direction) and remove the handle.
10. Push the brea*er in against the track stops. Rotate
the two track lock links to lock the breaker in place. Close
the compartment door. See Figure 16G.
11. Engage the racking handle again as in Step 8, and
rotate the handle clockwise as far as it will go. Towards
the end, a high force requirement will be felt as the dis-
connect fingers on the breaker engage the stationary studs.
A couple of turns later, and the stop will be encountered.
The position indicator will now show CONN.
NOTE: ALL BREAKER COMPARTMENTS
DESIGNED FOR FUTURE USE HAVE PRO-
T ECT IV E B/RR/ERS I N ST ALLED T H E REI N,
SEE FIGURE 15.
BREAKER REMOVAL_AK BREAKERS
l. Trip the breaker.
2. Insert handle on jackscrew shaft located on left hand
side of compartment.
3. Rotate handle counter-clockwise until jackscrew is
stopped. (Indicator should read DISC).
4. Remove handle and open compartment door.
5. Rotate the two track lock links and pull the breaker
all the way forward. The breaker may now be lifted from
the tracks by the lifting device.
BREAKER REMOVAL-AKR AND AKRU BREAKERS
1. Trip the breaker.
2. Engage the racking handle. This is done by pushing the
trip button in the breaker escutcheon, sliding the cover
below it to the right, and inserting the handle on the jack-
shaft.
3. Turn the handle counter-clockwise as far as it will go.
If the breaker closing spring is fully charged, it will be dis-
charged automatically a few turns before the end of the
action. (Indicator should read DISC.)
4. Remove handle and open compartment door.
.5. Rotate the two track lock links and pull the breaker
all the way forward. The breaker may now be lifted from
the tracks by the lifting device.
I
l5 (8042650) Provision for future breoker with protective
bq rrier
FIG.
17

GEK-7 2l Ol, Low V oltoge Switchgeor
FlG. t6A (8035642) With innerhouse in DISCONNECTED posi'
tion, open the compodmenl door' Rotote the lwo trock lock links'
Pull out right trock comPletelY
FlG. l68 (8035640) Let out Hoisl Coble' Ploce hooks in slots
l8

Low Voltoige Swifchgeo r, GEK-72101
FlG. l6C (8035639) Adiusr coble to bolonce breoker, Coble eye
must be under boll neorest ihe hoist
FlG. l6D (803563, Roise breoker unril mounting pins ore obout
one inch obove trocks
t9

GEK-7 21 01, Low Vohoge Swif chgeo r
FlG. t5E (803564.l) Pull left trock oul completelv
FlG. t6F (8035635) Lower the Breoker into the lrock slots' Remove
tne Hoist Coble
20