GE AKD-6 Instructions Manual

INSTRUCTIONS

TYPE AKD-5

GEK-72r01

8-77

tOW

VOLTAGE

\

l'\

SWITCHGEAR

ilH

;q

M

,

il}

il

GENERA

L@

ELECTRTC

2 | 0 l, Low V oh

GEK-7

ge

Swifchgeor

o

CONTENTS

INTRODUCTION RECEIVING,

Receiving

Handling

Removing

HANDLING, STORAGE 2

Shipping Skid ..

Indoor

Equipment Only ..

........ 4

Storage

DESCRIPTION

Front Enclosure ...

BreakerCompartments....

Bus

Compartm€nt .

Feeder Cable and Busway

...

Compartment

......6,7

........ 8

GroundBus.. 9

Outdoor Equipment

EQUIPMENT INSTALLATION

Prior to Installation

Location

FoundationRequirements.....

Anchoring

Assembly of

Equipment

INTRODUCTION

This book contains

and maintaining AKD-6 Low

read carefully before

be

instructions for installing, operating

Voltage

Switchgear. It should

installation and

For application and specification information, refer to

Bulletin

lays or other devices

GEA-10279.

Separate

In

addition

publications

will be supplied for breakers, re-

not

described in this

to instruction books, the following

will be supplied:

l. Front

2. Summary of switchgear

3.

View and Floor Plan drawings. These show

general

the

space, etc.

parts

list,

vices,

etc.

Electrical

arrangement,

giving

catalog numbers of all breakers, de-

diagrams

height, recommended aisle

equipment. This is

(when

required).

........ L2

initial operation.

manual.

drawings

a

10

partial

2

Breaker

Breaker Operation

TESTING AND INSPECTION RACKOUT MECHANISM OPERATION

4

5

6 6

8

KEY INTERLOCKS

For Breakers For Fuse Rollouts

DOOR

RACKOUT

9

10

10 10 11

PADLOCK DEVICES

MAINTENANCE .

Breaker and Instrument

Bus Compartment .

Feeder Cable and

Overall

Paint Refinishing

RECEIVING,

RECEIVING

Every

case number, requisition number and customer's order number. If

numbers

unit

package

All equipment leaving

packed

and

packing

and apparatus, sustained

Air

circuit breakers are

cartons

breakers should

possible

Be

sure to inspect devices mounted

side the hinged

Insertion

and Removal ..... L6,L7

INTERLOCKS . . . . .

MECHANISM

Compartrnents ......

Busway

Switchgear

Compartment

..

HANDLING

package

leaving

the equipment has been split

the factory is

AND STORAGE

plainly

for shipment, the

of the equipment enclosed in each shipping

are identified.

personnel

by

of

electrical equipment.

make

the factory is carefully inspected

experienced in the

Upon

inspection immediately for

an

proper

while en route.

with the

shipped

breaker in the open

separately

position.

be unpacked and inspected as soon as

after they have been received.

in compartments in-

doors.

......

. ....

marked

receipt of any

in individual

with

handling

damage

Circuit

22

24

26

27

2E

30 30

30 31 31 31

3l

All of these documents are needed for installation, op-

eration and maintenance of

in

packet

a

tingcncy

should relcrred

inside

breaker compartments.

insfruclions do nol

fficse

to b. ,r6t in connec'lion with

parlicvlar

lo lhc

the auxiliary unit, or in one of the

problems

Gcncrsl

found

instrument or

equipment. They will be

the

pwport

orisc wfiich

Elcclric

Compony,

oll delails or

lo cover

instsllation, operclion or moinfsnonce.

crc nof covered sufricicnlly

is portation

Sales Office

number, case compeny the

vorialions

If

damage is evident, or indication of rough

visible,

file a claim

company. Notify

promptly.

in

eguipmenf nor lo

Should

for

pvrchoser's purposel,

lhe

number,

claim.

for

Information

requisition

provide

luilher

damage at once with the trans-

the General

lor

evcry

inlormalion bc

thc maltcr should

Electric Company

on damaged

number, etc.,

possible

desired or

handling

parts, part should ac-

con.

bc

The

Master

case operate

paint,

items

crate,

contents

Packing

in

which

the

breaker

packed

are

the list

of

each shipping

List.

miscellaneous

equipment

closing devices,

in

a switchgear

will

indicate

package

This list indicates

parts

(such

as

needed

contact lubricant,

etc.) are located If

unit instead

the

appropriate unit number

are listed

the number

to install

touch-up

a

of

separate

on the

of the

and

such

Low

V ohage Swifchgeo

r, GEK-7 21

0l

which they are stored.

Large

used

with indoor equipment)

separate

To avoid the loss of small

contents

in

JACK

the

HEAE

packing

E

U

6

=

v

(such

items

crates

as hoist

or cartons.

of each case should

list

before discarding

NOI FUFNISHED

a

wrrH EoUTPMEN?

/l

rrE

/ |

t/

tt

'ABLE

1

dollies

will

parts

be carefully

6

U

o

hoist

and

always

carriages

be shipped

when unpacking,

checked against

packing

the

material;

in

the

FUR}{ISHEO

NOT

WIYH

EOUIPUE}IT

RECOMMENDED

FRONT

VIEIV

METHOD

RECOMMENDED

AFTER

SHIPPII{G ROLLEFS EOUIPMENT

OF

LIFTING

SKIDS ARE REMOVEO

MAY

6E USEO

PARALLEL TO FRONT

TO

ROLL

stoE vtEw

METHOD

ONLY

OF JACKING

HOIST RAIL WHETI FUFI{ISHED

FROTIT

(FiONT

CHANNEL

ONLY}

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

are

provided

crane

top of

on

for lifting, a cable spreader must be

pull

the shipping skid should

on the lifting lugs, Recom-

lugs

able

When using a

used to obtain a vertical mended lifting method is shown in Figure 1.

practical,

If

by crane.

the indoor

be left on the

equipment until it is at or near its final location.

If

crane facilities are not available, the equipment

be moved into

placed

under the

is insufficient, the

equipment under the equipment.

The skid is

position

by means of construction rollers

shipping skid. Where overhead clearance

shipping skid may be removed

moved by rollers

bolted

placed

to

the equipment

the

under

through the anchor

three

Remov-

switchgear.

may

and the

channels

bolt holes used for final installation.

of the

equipment

To

reach the bolts in the

may be reached

front,

bottom breaker compartment must

disconnected and

the drawout

CAUTION:

MOVED, BE

ARE SPACED

NEI,S DIRECT

BETWEEN

position.

Fig.

procedure

IF THE

SURE THE ROLLERS USED

SO

RES? O1V

APPLICATION

TOP

THE CHANNELS

3

is

SKID fI.4S BEEN RE-

THAT

DISTORT THE ESUIPMENT,

may also be used to handle the

Jacks

crane is not

FUFNISHED

NOT

WITH

SWGR.

available. See Figures 1 and

The bolts in

by opening the rear

the

rear

doors,

the'inner housing in the

shows

be brought out to the

the front

explained on Pages 16 and 17.

bolt

locations,

THE THREE CHAN-

OF THE ROLLERS. A

THE ROLLERS

OF

TEAR

MAY

equipment when a

2.

OR

FRONT

TIMBER

JACKING

FURNISHED

NOT

VJITH SWGF.

ll

'1

-lffill

[v_L_\

"^"..)

PARTIAL

FRONT OR REAR

FON

JACKING

FlG.

2

VIEW

RECOMMENDED

I

VIEW

METHOD OF LIFTING

PARTIAL

FOR

RECOMMENDED METHOD OF JACKING

(0673D0500-266)

Methods of

Hondling

Outdoor Equipment

srDE vlEw

SIDE

JACI(ING

VIEW

JACK

HERE

Low V oltoge Swilchgeo

r,

GEK-7

21 0l

Methods of handling outdoor

ure 2,.are much the

that lifting

The lifting

permanently

is

of the

Store

upright

vent bending parts.

ready to be installed.

absorbent

breakers.

STORAGE

If

breakers are not to be

them from

them. If ever5rthing is in

breakers

plates

equipment will not be obstructed.

the circuit breakers

position.

Do

not remove

paper

their shipping cartons and

in their

same as for indoor equipments except

provided

are

should

anchored

They must

of the studs or damage to any

any

A covering of kraft

prevent

will

satisfactory

shipping cartons for storage, Do not re-

switchgear,

at the base of the structure.

be removed after the equipment

so that

passageway

in a clean,

properly

be

protective

dust from

placed

in

service at once, remove

shown in Fig-

at the ends

dry location in an

supported to

the breaker

of

grease

until

other non-

or

they

settling

thoroughly inspect

condition,

replace

on

pre-

are

the

move the

shipping

If it is necessary to

time, the

of

vent corrosion

IJncrate

1.

2. Store in a

temperature vent dirt,

ing

If

3.

the storage

units to

watts of heat in each

switchgear temporary ready installed

CAUT|ON:

switchgear.

the

dampness or condensation

members

following

store

precautions

this time.

at

the

equipment for

should be taken to

or deterioration.

the

equipment. Check thoroughly

clean, dry, rodent free

water,

provide protective

and

or other foreign

location

substances

may

location, heaters must be

prevent

moisture damage. Approximately 250

unit is required. On outdoor

this may be accomplished by making a

power

supply connection

in the equipment.

REMOVE

ALL CAR?OJVS

OTHER MISCELLANEOUS PACKING

TERIAL FROM IJVS/DE

ENERGIZING

WIREWAY,

BREAKER

ANY HEATERS.

OR

THE UNITS BEFORE

INSTRUMENT

COMMRTMENT.

A

.

MENT

I

any length

pre-

for damage.

moderate

with

coverings'to

be

encountered

placed

pre-

from enter-

inside

to the heaters al-

AND

MA-

lrl

lrll

llnrl

u4

)

FULL

HEIGHT WIRE

TROUG

WHEN

in

the

FIG. 3

(0673D0500-265)

front

in

Locotion of skid

of lndoor

Equipment

bolts

(ond

onchor

bohs)

BREAKER

COMPARTMENT

B

BREAKER

COMPARTMENT.

c

(0148A5073-0)

FlG. 4

CAB-E

Side View showing

Comporrmentorion

GEK-7 21

01,

Low

oltage

Y

Swifchgeor

PRIMARY

SI{IPPIIG ilCKAGE

SECTIOI{

LOAD CENTER UNIT

SHIPPING PACKAGE

SUBSTATION

LOW VOLTAGE SECTION

SHIPPING PACKAGE

REAKER UNITS

or3

ol5

(0102C5207-O

FlG.

5

Outline of o typicol lood

Substqtion

DESCRIPTION

General Electric AKD-6 Low Voltage Switchgear

free-standing assembly

Circuit Breakers and other auxiliary

tive devices. It may

double-ended Load Center

Figure 4 is

showing compartmentation, and Figure 5

an outline of a

a typical single-ended Load Center

trating the nomenclature used for all

All of the switching and

metering devices,

formers are mounted in the enclosure. The breaker

are

of the drawout type. The breakers

all

-coupling

self

incorporate

and

proper

compartments and devices is described in the following

paragraphs.

primary

positive

operating

of metal-enclosed units of Power

power

also be a

part

of a single-ended or

Substation.

Unit

side view of a typical

is

Substation

Unit

equipment.

protective

control

fuses

and secondary disconnecting

devices, control and

and instrument trans-

are

and indirect interlocks to insure

sequence. Each of

the individual units,

circuit

an outline of

provided

is a

protec-

unit

illus-

positions

with

contacts

showing nomenclqture

FRONT

ENCLOSURE

The front enclosure

dividual

power

a

and

other

BREAKER

MOUNTING

These breakers are supported

by a rollout track which

attached to the

The drawout mechanism Figure 19, and its operation is

"Drawout

Cenfer

compartments. These

circuit

protective

COMPARTMENTS_AK BREAKERS_

CODE

Unit

of each

breaker or are used to mount instruments

devices and

2A,

3A,

4A,

is divided into in-

unit

compartments either house

control

OR 5A

components.

within their compartments

part

is

sides of the compartment. See Figure

of the drawout

is shown in an exploded view,

explained

Mechanism Operation,"

mechanism

in

detail under

6.

low Voftoge Swifchgeo r, GEK-721 0l

BREAKER

BREAKERS-MOUNTING

These

same

COMPARTMENTS_AKR,

CODE 3A, 4A OR

breakers are supported on a rollout track

manner as the

AK breakers. However, since the

AKRU, AKRT

5A

in

the

rackout mechanism is mounted on the breaker, there are

jackshafts

no

on

both sides of the breaker

mechanism

Note

secondary

secondary or not

be included at all,.depending

ified. Also note that

shown in Figure

material

A stop link is located on

compartments.

pushing

ally the compartment

connected

breakers, the latches

pins prevent

all the

set on the tracks.

All

AK or AKR

in the

enclosure. See Figure 7. Racking arms

pins

fastened to

that extra items shown

disconnects,

disconnects) may appear in any compartment

the bracing for the

both sides

in Figures 6 and 7

position

7 may be a

instead of three separate

each

These

a breaker set

when the racking mechanism is in the

position.

the inner house from being manually

prevent

links

on

the

In a compartment made for AKR

rest

that

on the drawout

of the compartment.

switches and

on the equipment spec-

single

pieces.

side

an operator from manu-

tracks

way into the compartment when no

circuit breakers of the

frame engage

the drawout

ground

primary

piece

of

disconnects

of insulating

all AK

all the way into

mechanism

breaker is

same type

(such

sensor

breaker

moved

and

rating

which

have duplicate wiring may be interchanged.

Each breaker compartment has four

illustrated in Figure 18

CONNECIED POSIIION-The

1.

position,

and the door

TESI POSITION-The primary

2.

both

closed.

primary

described below.

and

and secondary

a safe distance, but the secondary Any

as

3.

4.

breaker test not involving

position.

in

this

tion,

and must be closed before charging the spring

on a manually operated AKR breaker because an open

door

will

DISCONNECIED

secondary WITHDRAWN

out

equipment.

of

NOTE:

its

ALTHOUGH

PARTMENT

ANY

POSITIOJV,Ijr IS

THE

DOOR ONLY BE OPENED

BREAKER

The door may be

interfere with

POSITION-Neither

contacts

the breaker

are made, The door

POSITION-The

compartment

The door must be open.

ready for removal from the

THE BREAKER

DOOR IUTAY BE

RECOMMENDED THAT

/S IiY THE DISCOIVJVECT

positions.

breaker

contacts are separated

contacts are

power

closed in this

handle travel.

the

breaker

They are

is in operating

contacts made

made.

be made

may

primary

may be closed.

is

posi-

nor the

completely

COM.

OPENED

WHEN

IN

THE

OR

by

WITHDRAWN POSITION.

CAUTION:

DOOR

AND IN THE

NEVER

OPEN THE BREAKER

WHEN THE BREAKER

CONNECTED POSITION.

CLOSED

'S

SECONDARY

DISCONNECTS

KEY

INTERLOCK

TRACK

LINK

ROLLOUT

OPERA

SHAFT

INDICATOR

CURRENT

TRANSFORMER

LOCK

LINK

STOP

ROLLOUT

TRACK

JACK

SHAFT

CHAIN COVER

GROUND

SECONDARY

SENSOR

DISCONNECT

HA,

6

$012645)

Typicol AK

breoker comporlmenl

GEK-721 01,

SECONDARY

DISCONNECTS

INNER HOUSE PADLOCK

INDICATOR

STOP KEY INTERLOCK

DEVICE

LINK

Low

oltage

V

Swifchgeor

AMMETER SWITCH

AMMETER

ULUJE FUSES

INDICATING

LIGHTS

DRAWOUT PIN

KEY

TRACK LOCK LINK

CURRENT TRANSFORMER

ROLLOUT TRACK

GROUND SENSOR SECONDARY

POSITION SWITCH

AND COVER COVER BRKR. COMPT. ONLY

BUS

the rear

necessary bus supports for

compartment compartments

MECHANISM

INTERLOCK SLIDE

DISCONNEC

IN FUSED

REQ'D.

COMPARTMENT

The

bus compartment,

cable compartment, contains

is isolated from the

by barriers. Isolation barriers between the

between

particular

a

7

FlG.

the

front enclosure

of the bus and

all

section.

breaker

and instrument

(8041

585) Typicol AKR

This

and

bus

bus and cable compartments are optional. A typical ar-

rangement with an all-welded

Figure

8. Bolts are used for supports or at connections

aluminum bus

is shown in

which must be made in the field. Bolted copper buses are optional.

On main breaker and tie

ment may be

divided into an upper and lower section

an optional isolation section contains

connections in the auxiliary unit, contains

Optional

sections

the

barriers at tie breakers isolate the two main bus

from each other.

the

main

bus which connects with the other units.

Aluminum buses run

breaker units the bus compart-

barrier. For main

incoming

line bus, fed from

breakers,

the lower section

while

continuouslv from one

the

unit to

by

upper

bus

{

iir

breoker comportmenl

another.

made to other equipment

is mad" for

between each

quate

be made from the bars

breakers to

arrangements

vided,

typical terminal arrangement is

the cable compartment of

partment from above

of conduits leaving the

the normal available space.

At shipping splits,

or where connections

during installation,

unit.

joint.

Copper buses have bolted

the load side of the feeder

at

a bolted

FEEDER

The

CABLE AND BUSWAY COMPARTMENT

rear cable and terminal compartment

room for cable installation. Straight cable runs can

conduits entering above or below. Various

single

of

depending upon the

An add-on unit, 18 inches deep, is

or double cable terminals are

purchaser's

shown

requirements. One

in Figure

available

the 22 inch wide unit. The com-

is

extended when

or

below are used, and

more than

cannot be

unit

two

also when tlre

accommodated in

TEST SWITCHES

TRIP

FUSES

ooon

INTERLOCK

-

are to be

provision

joints

provides

ade-

pro-

9,

for extending

busway runs

quantity

Low

Voltoge Switchgeo

r,

GEK-72101

(8042652)

FlG,

8

Conduits

for

Bus

large

cable compartment

cables

as necessary.

Beside

clude an

of the

connections.

power

enclosed wiring

cable connections,

cable compartment,

Terminal boards

for making control

A neutral bus is

switchgear

bars

a

height of

feet. ground.

GROUND

designed for

plated

with

about

In most

CAUTION:

equipments the

BUS

connection

IT IS

ESUIPMENT

FOR

SAFETY.

ComDorfment

cables should be near the rear

provide

to

trough on the left side

space

some

providing

provided

are

for bending these

equipments

control

for

in this

(rear

of the

view)

circuit

trough

wiring connections during installation.

provided

in the

cable compartment

four wire systems. It consists

18

areas, and is

inches from

neutral

VERY IMPORTANT

BE ADEQUATELY

installed at

floor

the

bus

GROUNDED

or at about

is insulated

THAT

either

from

in-

on

FlG. 9

$042651)

ground

The

partment

each

equipment for making

ground.

shown on

package,

ping

of

6

OUTDOOR EQUIPMENT

equipment

with a

provided

250

unit.

reduce

A recommended

Where

splits.

Outdoor

walk-in front

watt heater located

These

condensation

Typicol Terminql

bus is

near

bolted to the

the bottom.

A 4/0 connector

location

the floor

AKD-6

the

switchgear

completely

in all

plan

drawing.

switchgear is shipped

ground

bus must

is constructed

enclosed

aisle, Figure

outdoor equipments. There

in the

heaters should

in

be energized

the equipment.

Arrongement

in o

rear of the cable

is included

the

connection to the station

for

this connection

in

be connected at

in

a weatherproof

more than

as

a basic indoor

10. Space

heaters

is one 115v.

bus compartment

at all times

4-high

com-

the ship-

housing

of each

unir

on

is

one

are

ac

to

GEK-7 21 0 1, Low V olt oge

Swif

chgeor

t0

FfG.

EQUIPMENT

TO

PRIOR

INSTAII.ATION

Before any installation work is

drawings furnished by G.E. Co. for the

tion. These include arrangement drawings

INSTAIIATION

performed,

particular

(front

view), connection and elementary diagrams,

drawings and a summary

ing information from

furnished

mary and identification number wherever

material

to meet local codes

the equipment, refer to

with

external to

the

(such

the equipment. When request-

of

the factory on

any specific item

the item

possible,

equipment which

as mats, screens, railings, etc.)

may

is not furnished.

LOCATION

In

locating AKD-6

space at the front

mended

and is in

should

air

taken into the

top,

aisle

accordance with N.E.C. Article 110. Local codes

be checked for any special aisle

The equipment should be

is free to

location

a

and rear of the equipment,

space

is shown on

circulate

units at the bottom

good

with

switchgear,

around and above it. Since air

air

provide

floor

the

placed

in an area where

and is exhausted at the

will

provide

flow

adequate aisle

plan

cient operation.

$012659)

Typicol

study all

installa-

plan

and

installation

sum-

by

Any

required

be

The recom-

drawing,

requirements.

clean

more effi-

Outdoor Shipping

FOUNDATION

the

to the floor.

nels

floor, it is recommended that recessed steel installed by the

The

channels should be embedded in a level concrete

their top surfaces flush with the finished

sential that

switchgear channel be supported

distortion of the switchgear structure,

is

above the floor

switchgear channel must be supported

If other equipment

Section

REQUIREMENTS

Indoor Equipment-Suitable

purchaser

CAUTION:

ECT TO V I B RATIONS, SPECIAL MOU

]

for mounting and

IF THE FOUNDATIO]V

MUST BE PROVIDED TO

means

anchoring the switchgear

PREVENT THE

TRANSMITTAL OF VIBRATIONS

must be

provided

IS

NTI NG

TO THE

ESUIPMENT.

Although the equipment is furnished with built-in

so that it can be mounted directly

floor

channels under

purchaser

for supporting the equipment.

the front and rear

on a smooth, level

channels be

floor. It is

other

prior

to final anchoring, and that

by the finish

level

the mounting channels, the center

by

If

the

floor to avoid

gear

each

steel channels be level and aligned

these

at the same level.

installed in the same

is

channels must

level and

be

aligned

with each other.

SUA-

chan-

switchgear

slab

with

the center

is raised

lineup,

by

es-

all

l0

Low

oltoge Swifchgeo r, GEK-7 21 0I

Y

FLOOR

STEEL TO BE DRILLEO

(BEFOBE

TAPPEO

lS [{ PLACE),

MAY

8E

USEO.

14

BOLT

0lA.

ANO STEEL NUTS

ANCHOA

METHOD OF

ANCHOR SOLTS. FLOOR

BY PUBCHASER.

SHIMS

FOUNDATION

EOUIPMENT

EMAEODEO CHANTIELS

EACH

ENTIRE LEflGTH. CENTER

SUPPORTED.

F€COMMENDED FOR IEVELI'{G PUNPOSES,

FINISH

FROM MOUNTING CHAtrXELS

THE FINISH

CHANilELS.

IS FURNISH€O WITH

OTH€R AflD SHOULD 8E LEVEL OVER THEIR

FLOOR SHOULO

SHOULD BE SET LEVEL

Vr THK. FOFM€D

HAVE

FLOOR

BE HIGHER THAN

OR AFT€R

WELo

OR

ANCHORING

CHANNEIS.

AiiO

DATA

AUILT.IN CHANNELS.

MUST

CHANilEL

CHAilNELS

PITCH AWAY

SLIGHT

AiIO IN

NO CASE SHOULD

MOUNTIflG

ARE

PAD FINISH SURFACE

METHOD

ANCHOR BOLTS. FLOOF

WITH

B€

OF ANCHORING

T

CHANNELS

BY PURCBASEN

-

SHIMS

INSERI

OF

METHOO

Foundotion for lndoor Equipment.

FlG.

(0673D0500-265)

t

|

ALTEANATE

ANCXORING

Anchor bolts, floor steel ond olher foundotion moteriol furnished

purchoser

by

Recommended

mounting

the

Figure 11. This information is also sent to the

method of embedding channels and

switchgear to the foundation is shown

purchaser

with other requisition drawings.

Outdoor Equipment-Recommended method

ding channels and mounting the switchgear to

tion is shown

in Figure

Indoor Equipment apply. Outdoor

center

channel in the floor frame

pad

by the

or

other

means.

12.

Otherwise, comments under

equipment

must be supported

which

ANCHORING

The switchgear should be mounted on

as shown in Figures

11 and 12 and securely

top of the channels

them.

embed-

of

fouqda-

the

also has a

anchord

FLOOR

VIEW OF

SIOE SHOWING FRONT,

SEARII{G

REAR AiIO

FRAME

OF

SURF^CES

C€NTER CHAITIIELS

FOUNDATION DATA

EOUIPMEXT IS FUFNISHEO

EMBEODEO

CHANNELS SHOULO BE SEI LEVEL

OTH€R ANO

€ACH

EilTINE LEflGTH.

y.

IHICK FORMEO

LEVELING

PURPOSES. FINISH PAD

FlG. t2

(0673D0500-266)

Anchor bolts,

PITCH AWAY CAS€ SHOULD THAN MOUNTII{G

floor

FROM MOUN'ING

IHE

sfeel ond

oy

in

to

the channels. One is to use

the holes

shown in the floor

channels of

There are

two methods of anchoring indoor equipment

provided

the

in

the bottom of the €quipment

plan.

Another is to tack

equipment to the foundation channels.

Two suggested methods for anchoring

switchgear

bolt and floor clamp

the

foundation.

NOTE:

MENT

THE

to

BOLTED

UNDER

illustrated

are

to

DO NOT BOLT ORWELDTHE

TO THE FLOOR

SHIPPING PACKAGES HAVB

TOGETHER .4S DESCRIBED

"ASSEMBLY

IVITH

SHOULO

CENTER

CHANNELS

FINISH

CXANNELS.

Foundqtion

other

EUILT-II{ FLOOE FNAI'E.

5E LEVEL OVER

CHANN€L MUST

PAO

ARE

AECOMMET{OEO

SHOULO HAVE

CHANTELS A'{O

BE HIGHER

for

Outdoor

BE SUPPORTEO.

foundolion moteriol furnished

purchoser

inch anchor bolts through

lz

weld the bottom

outdoor AKD-6

in Figure

secure the

12.

Both use an anchor

supporting channel to

CHANNELS UNTIL

ESUIPMENT."

OF

WIT}

THEIA

SLIGHT

IN

EQUIP-

FOn

'{O

Equipment.

as

BEEN

ll

GEK-721 01, Low

oltoge

V

Swifchgeor

ASSEMBLY OF EQUIPMENT

Before assembly of

ponents

should be on hand

individual shipping

on the foundation. If there is no transformer and the equipment has been

middle both

Unit its

package

directions. If the equipment

Substation. the transformer section should

pad

in accordance with the instructions

the transformer, and then

NOTE:

WHEN AKD-6

STALLED

TRAIVSFORM E RS

IT IS IMPERATIVE

SURF.ACES BE LEVEL.

Proceed to assemble

1.

The switchgear

foundation

Figure

equipment.

2.

tened together

with the aid of cranes or

I for indoor equipment or Figure

For

Indoor Equipment, the

at

the

equipment

to

packages

facilitate

must be connected

split

on the foundation first

packages

SWITCHGEIR

IN

THE SAME LINEUP WITH

AND OTHE R EqU

THAT ALL MOUNTING

the equipment as follows:

packages

the

shipping splits by bolting

and rear upright channels together.

furnished with the equipment at

transformer

Ilta

the flange to the switchgear

For Outdoor

3,

from

front and fear

the shipping

plates

splice

weather-proofing must be followed as indicated in Figure

14.

proofed,

rubber

port seal

hardwaie.

place

joining

When

joint

The

This is

seal on each side of the top

batten so that the

on both sides. Bolt

A

by the roof trim.

and switchgear

weather-proofed

rear batten

bolt

The

the transformer,

former ment. Check

to

see that the

4,

of

adjacent

bars furnished

for

details of splice

mounted

ticularly important

vides

and

them together

gasket

for

flange

Bolt the main buses,

directly

an integral

in

is

the lineup, hardware for connecting

is supplied with the equipment.

Equipment, remove the

of the switchgear base at both ends of

joint

split

as shown in Figure 14.

shipping

in the roof at shipping splits must be weather-

done as shown in Figure 14 by

and assemble the front

packages,

roof sections butt up against this

joint

this

roof

as

rubber

placed

cap is

Joints

and between

shown

seal

Figure

in

at

over this seam and

between transformer throat

shipping splits must be

the shipping

with the furnished

outdoor

an

transformer is furnished with

and hardware

to the

switchgear is supplied

alignment of

weatherproof seal has not

shipping

doors on the outdoor equipment

ground

packages

with the equipment.

bar connections.

on the rear

that this bus

ground

upright channels, It is

for

all the equipment that should

is begun

installation. The

for shipment,

and

part

is

of a Load

of

equipment

should be

jacks

packages

Use

the

end of

special

edge of

togeher, using

14. Install a front and

3/e-16

connecting the trans-

for

buses, and neutral

together using the splice

See Figure

The

be connected since it

all com-

togefher

in

lineup

the

place

assemble

Center

be set on

furnished

I PM E NT,

placed

as

2

should be fas-

3/a-16

the

lifting

procedures

the roof sup-

split

with the equip-

been disturbed.

ground

added.

IS IN-

on the

shown

for

outdoor

the

hardware

packages,

plates

and

placing

7a-16

held

joints

hardware.

buses

13 and

bus is

with

front

rear

and

par-

pro-

the

for

in

14

be connected to

mounted

rear

Iineup, make

to the flexible

shown in

plied

in

the bus'entrance compartment

This

connected

pad

for

on molded insulators

upright

Figures 13 and 14. Connection hardware

with the equipment. The

bar should be reassembled in

at the offset

a

with

proper

All bolted bus

torque values

5. Bolt

specified

switchgear.

equipment.

busway.

in

splits.

under

6.

All shipping supports must

Busway runs

7.

8. Connect control cables

A tag

will indicate

located.

across the split and

blocks as indicated.

a

These

9. Connect

a.

When control

below, they should above the floor. The control cables may through

is

installed.

b. Route the

the wiring ment and connect

in accordance

equipment.

c. If the

top cover

the station

channels. the necessary connections

connectors furnished

1/z

inch bolt. Consult transforiner instructions

connection

as shown in

procedure.

joints

should be made up using the

or weld the equipment to the foundation as

"Anchoring."

These

Hardware for this

at the top of the

where

control cables to the

the conduits before

control conduits

painted yellow.

are

must be lined up and connected

the

wires are

connected to

conduits enter the switchgear from

control cables from the conduits trough

with the connection diagrams for the

within the

trol cables should be routed to

and connected

10.

Connect

main

cable connections identified ment. be

cables

at the

Figure

Cable terminals

are

ment.

terminals

they above manufacturer's recommendations

as

to indicate their

Adequate electrical

provided

mounted

are

between conduits,

enter

the unit, they

rear

of the cable

9.

at the ends

Check

to see that the

are located

positioned

or below. In

as the instructions

well

to

main

the

are

at each

correctly

all cases, carefully

ground.

Neutral buses are

that are attached to the

If

a transformer is

with the transformer as

present

from the equipment

in

is sup-

portion

Table A.

ground

will to the transformer

connection bar in

be

shipped

the correct

removed

be

turned

position

ground

proper

from the

to the

joint

is furnished with the

between units at

the

shipping

unit adjacent to the

wires that cross the split are

all

not

tagged

and

the shipping split terminal

switchgear unit as follows:

extend

or after the

should be laid

more than

one inch

pulled

be

switchgear

through

at the side of the cable compart-

the cables to the terminal blocks

enter from above, drill the

available space indicated. Con-

the wiring

the

terminal blocks

cables

are made, the

phase

and

can be lashed to

the

to

mechanical

cables and bus. Where the

units. Before any

cables should be

relationship

clearances

cable supports

trough

as above.

with equip-

compartment as required. See

included

of the bars

with the switchgear, and

in the cable

proper

connection

receive

to

size and

cables

quantity

point,

coming

compart-

and that

follow the

installation

for

contained in

this book.

of cable,

the

in.

and

split

must

of

from

cable

12

Low Vohoge

Swifchgeor,

GEK-72101

It is imperative

their

to take movement

Train

temporary

during short

the

lashing if

weight

cables

that all cables

off

in the

Strip the insulation not

to

damage

For

copper cables,

insert

the

screws

in

For

aluminum

thoroughly. strands

Penetrox A.

Insert

in

result

strands.

in

as D50H47

these

channels. partments,

with a

cables into the

accordance

in the

Bolt

the cable terminal connectors

the cable

connection surfaces,

Lash

the cables

11.

Remove

any strands.

cables

into the

accordance

Immediately

quality

(or

other similar oxide inhibiting compound).

with values

oozing

Wipe off

the excess compound.

compartment.

furnished with

permanently

the lifting

If equipment

brackets

cables.

at the rear cannot be

terminals and studs,

be adequately supported

circuit.

proper

path

to the

required,

to

coat

with values

and cut to the

the

desired dimension,

the

cables with

terminals

shown

and tighten

in Table

wire brush the

after wire

oxide inhibiting

terminals

shown in Table

of compound

brushing, coat the

compound

and tighten the

from between

to

the ends of the bars

A non-oxidizing lubricant

each equipment) can

to the

cable

brackets from the front and

is furnished

with

removed.

prevent

and to

terminals,

proper

length.

being careful

D50H47

grease,

the set

B.

cable strands

such as

set screws

B. This

should

individual

be used

supports.

"add-on"

using

cable

(such

rear

com-

12. Remove all blocking

13. Make

a

finai

inspection to

construction materials,

switchgear.

TORQUE

Wire

Size

6

3

VALUES FOR

Inch-

Pounds

100

125

tzJ

I

0

at

00

000

0000

200,000 250,000

300,000

125

150

200 200

200

250

on relays and devlces.

see

that

there are

no

tools,

or other foreign matter left in the

TABTE

B

CABLE TERMINALS

Wire

Size

350,000 400,000

500,000 600,000 700,000 7s0,000

800,000 900,000

1,000,000 1,250,000

1,500,000 1,750,000 2,000,000

Inch-

Pounds

250

300 300 300 300

400 400 400

500 500 500

500

TORQUE

VALUES

Bolt

Size Foot

1A_20

16

'll.s-

Yz-13

5/8_tl

TABTE

FOR

LOW VOLTAGE EQUIPMENT

(COPPER

OR ALUMINUM)

Pounds

A

With Prevailin{

With Finished Machine Nut ical

Totque Locknut

And Flat

Flat

And

Washer

Washer And

FIat

Washer

Flat

HARDWARE

Sprin(

Washer

Or

Washer

10

30

42

J)

Washer

OnIy

l3

GEK-7

21

01,

Low

V oltoge Swifchgeor

NUT.

REMOVE

PLATE

LIfiING

ANO

SPACER.

AOLT STAYS

PLAC€.

AFTER

EOUIPMENT

(2)

REMovE

SCNEWS SHIELD To R€^SSEMBL€

TAP SCREWS.

#10.32 SELF-TAP

AND LOWER EOTTOM

FLoon

rHE

IN

R€MOVING PLATES

SloE

IS

SET

LrN€.

(2)

SELF-

AilD

SHEET

IN

PLACE

LIFTING

SPACERS

--\

<-4r

ilt \

I II \

#10-32 SELF-TAP scnEws

I ll

III

'

)ll 1 lt

-{++z

-J

SOTTOM

llt-P

E

II

-

IL

SHTELD

8 FT. t0 lH-

\

TILT FRONT OF HOIST 1-Zr

ROLLER

DlA.

CHANNEL. THEN LOWER

TO RAIL.

GROUNO 8US SPLICE

3

MAIN

BUS

SPLICE

UNOER

{SEE

(SEE

TO ASSEMSLE

UP

FLANGE

FRONT ROLLEAS

NEUTRAL

vlEw

"G")

sPLrcE

3

Or

SPLICE

(sEE

(SEE

VTEW.D)

VIEW.D)

yJ/-,"

I

RACK LOWER BREAKER

A- t

\

/

.I/

IO OISCONNECT POSITION TO RECEIVE

/

-

ANCHOR BOLTS

/

PfHwlofJlH*il"

lf

COMPARTMFNT

*

LOWERIT{G SOTTOM SHIELOS

r sAR BUS 2 8AR

HAROWAFE-v, 8OLTS. NUTS. CoNICAL

NOTES

I ALL SHIPPING SPLIT

OISASSEMBLEO

SHIPPING

NEASSEMBLE TO

2 AUXILIABY UNIT OR

ADAPTEH MUST 8E REMOVEO FOR CONNECTION TO

TRANSFORMER.

3 GROUND

BUS

NORMALLY SHIPPEO

OF AOJACENI

SIOE NEUTRAL SPLICE, HAROWARE (WHEN

FURNISHEOI WILL

ASSEMBLED TO EI'HER SIOE OF SHIPPING PACKAGES.

HARDWARE TO 8E

BEFORE

PACKAGES ARE

SECURE

AUXILIARY

TOP COVER

ANO

ANO HAROWARE WILL 8E

SPLICE

ASSEMSLEO TO EITHER

SHIPPING

AOJACENT

IN

SET

SHIPPING SPLIT.

UNIT

(2)

REAR

PACKAGES.

AND INSULATOFS

AE

NORMALLY S}IIPPEO

t4

sPLtcE EARS

/-7

It //

'|+\ }.....I.'+-+

-r\\-

BUS 3

ANo FLAT WASHEnS

"F"

vlEw

SPLICE

MAIN BUS

coHDUCroR

PLACE,

COV€RS

i?rr?r,r

ADJACENT

FlG. l3

SPLTCE BARS

-

J-{/ ..1---

AAR AUS

>,

-....fulid4,a

"

ti}{-il

Typtc^LrTlrNsFoFM€R

(0673D0500-265)

r^F

h

il[%*

Assembly

38*'o'r3"o"n*

/*

of Indoor

--

Equipment

npen or rnlues J--

VIEW D

NEUTRAL BUS SPLICE

./-

//

/l

/\

6ft\,fr

ill

r._JlL_-,l

--\.*

-

vrEtv

G

BUS

GROUITD

SPLIC€

u--tt--n

--;-5-"-

ill

r Jll

Tr3 FLAr

c

srrn

REAR

rNsuLAToR

wAsHERs

usrEss

oF FRAME.

Horsr

CR^NK

ENLARGEO (BEASSEMELE

'Utl

-

SPACEF

/&ll

"

ll

VIEW.C

1

,('El*'

\>

J<

AS

SHOWN)

REMOVE

suPPoRrs

RUBSEN

SHIPPING

(YELLOW)

SEAL

Low

I

ROOF

Voltoge

.BATTEN

cAP

Swilchgeo

I

ROOF

CAP

TBIM

r,

GEK-72101

+T.16 HARDWARE

oTY.5OR7

DrscARD

/v llL-l llo. I r/

/u lrfl llo. |

t

90R10%-16

aolTs. WASHERS A LKW

EACH I I II

srDE FLANGE

TRANSFoRMER

TFANS

]

OPEN I NG

rRANS

il i

r.

L

SHIELOS'

--i

96_16 NUTS

Ilot-'r-Elq,-ll1Ff'|f

&r*pH*-

^lttr"t

,,1,,

',!o'

lt Lol :o I

iio

"-

,/r. i'

FLANGE

-l

I

"otorrv

\l

)alll

Ypwll'.3..3n

r [-k llll^Gd

'

coNrcAL

WASHER

TYPICAL

CONNECTION

llll^^

llll

llll ,/0- *f

TRANSFOBIIER

-

ifir l.-Jl

l:-l ll

I l^l J

I l,l

rl

lol I ll0

aos

CRANK

PAD FINISH SURFACE

3gl,"ltio.,*''

)^

'/

-f

\{.

I

'

mli

,LJ

ENLAR

eM]

/

-

J

t:--.-

'll$ow^ae

vrEw

vrE

t

I

. .

'l

e

sEr

'331E'

r ilc:

"

.flliF,".f..

==

=i

NEMOVE

LIFTING

I

lu

i

I I

i

PLA'E

!i

= =

I

SHtPPtNG

/,1-

q

SPLIT

I

i1-

;-At-

Tg-P

REMOVE

LIFTING PLATE ASSEMBLE PLATES FRONT

NEAR

)

/

SPLICE

I

AND

, /.spLtcE

':-ts.===-

I AAB

NOTES

1 ALL

SHIPPING

AANENS.

FRONT

TO 8E

DISASSEI/BLEO BEFOBE

SHIPPING PACKAGES

REASSEMALE

2 GNOUNO

NOFMALLY

SIDE OF AOJACENT

NEUTRAL

(WHEN SHIPPEO ASSEMSLEO

ADJACENT

sAn

BUS

HAROWARE

% BOLTS,

SPLIT HAROWARE.

ROOF RU88ER

ANO REAR

ROOF

ARE

TO SECURE

BUs

SPLICE, INSULATORS

FUBNISHED)

AND

SPLICE

SHIPPED ASSEMELEO

SHIPPING PACKAGES,

WILL BE

TO

SHIPPING PACKAGES

CAP TRIM

gARs

/spltcE

ry #

2 BAR BUS

NUTS,

CONICAL

vtEw,.F..

MAIN

BUS

SPLICE

FOOF

GASKET,

SET IN PLAC€.

SHIPPING

HARDWABE

EITHER

CAP,

AOJACENT

SPLIT,

WILL AE

TO

ETTHER

ANO HAAOWARE

NORMALLY

SIOE OF

FfG.

,SpLtCE

3 8AN BUS

AND FLAT

WASHERS

f 4

@673DO500-266)

SABS

Assembly

SECTION D-D

WPICAL.

FRONT OF

AOJAC€NT

SHIPPING

ARE

SECURE.

STAR

WASHEFS

of

Ourdoor Equipmenr

REAR AFTER

PACKAGES

F

PPHw'^t?tH^"'jl\

B€AR

OF

FBAMES

VIEW H NEUTRAL

SECTION AFTER

PACKAGES

/^\ /

,/ \l

//\

E.E

ADJACENT

ARE

.-T

8US SPLICE

SHIPPING

SECURE

BoRBT."iX,o*

Fr ar wAsHERs

t5

GEK-721 01, Low

V oltoge

Swifchgeor

ASSEMBLY OF

14.

equipment, arate carton. To install it, remove the front of the equipment. Lift the hoist into

of

top

is toward the on the top of the equipment the single

is

available at the end of the equipment, the hoist may

assembled

the channel and then the

stop clip and

straddle the

will

EQUIPMENT

Install the breaker hoist. When supplied

is shipped

this

switchgear

the

rear

on the

wheel

by sliding

positioning

tapered front track. If space

of the equipment is

the hoist side

rear

roller must

hooked under the channel and positioned

frames immediately in front of the single

be removed. The rear wheel can then be

on the front track. The retaining angle

rear should then

at each end of the front

riding

off the

When a hoist is

shipped mounted and ping

supports

be

removed as shown in

remove

shipment.

15. Before

breaker

connect

tightness, Refer

Also

check the contact

bar or cluster

accumulated.

a thin film of

before

Check to see that the

compartments. Each number.

the

summary, the front view drawings, the breaker name-

plate,

ahd

^:-- ^^+^-

Lar Lwrr.

Prrrli

To locate

to the breaker

proper

the

carton, or the mark number on the breaker nameplate. All

identical breakers will

BREAKER INSERTION

ends

at either

the wire that is

placing

compartment for

bars.

Where

to Table A for the

of fingers for foreign matter

Clean these areas if necessary.

D50H47

putting

a breaker in the compartment.

This number is

on the identification card on the breaker ship-

the breaker in the

location

breaker by the identification card on the breaker

(coni.)

with indoor

completely assembled in a sep-

the

lifting

plates

position

that

so

of the equipment. A channel is

the

the end with the single

provided

which serves as the track for

rear of the hoist assembly. If

rear wheel under the top

lifting the front end of the hoist over

restricted,

the front wheels so that they

the

angle which is bolted to

the ends

at

the front wheels

reassembled.

be

of the

provided

secured in

end

track to

track.

of

Stop clips are

prevent

with outdoor equipment, it

place.

The

movable track must

the

hoist

Figure 14. To free

used to keep it in

breakers in the equipment, check each

such

areas on each

breaker is assigned

list on the front

have the

bolted

joints

grease

breakers shown

proper

joints

in the

exist, check

proper

primary

covers

the

match

on the

breaker sheets of

compartment, refer view

mark number.

same

provided

the hoist from

yellow

hoist

the

place

primary

the

bolts for

torque values.

disconnect

that may have

Be sure

contact

their respective

part

a

or mark

drawing.

from

roller

space

leg

can

at

ship-

dolly,

during

dis-

that

areas

Find

the

on

be

of

be

test.

Check thoroughly for any

for any dirt or foreign matter

Be

sure that a thin film

disconnects

HOISTING

With the

AND INSERTING AK BREAKERS

inner housing

installine the breaker.

before

NECTED position, proceed

1. Put

be installed.

side of compartment.

3. Rotate handle counter-clockwise

stopped.

the breaker in front of the unit in which

Be sure it is tripped.

2.

Insert

handle on

(Indicator

jackscrew

should

damaged

which

D50H47

of

in the compartment in

as follows:

shaft

read

DISC).

or loose

may

be

grease

located on left hand

until

Inner

parts

and

in the breaker.

present

is

the

on

CON-

it is to

jackscrew

is now

house

is

in the DISCONNECTED position.

4.

Remove handle and

5. Rotate the

is

track to the limit

6. Pay out

slots

on the breaker side frames. See Figure 168.

CAUTION:

PLETELY

CRANK

THE

two track lock links and

of its travel. See Figure 16A.

enough hoist cable to

DO NOT UNWIND

FROM

MUST TURN CLOCKWISE TO HOIST

BREAKER, COUNTER.CLOCKWISE TO

LOWER IT.

Place

7.

(fourth

hoist

of the cable

WARNING:

DU

RI N

8. Raise the breaker until

approximately

9. Pull the remaining track

and lower breaker so the the slots in the

cable

the

eye

ball from the hooks) and

the

with

DO NOT

TlOlSTlNG

G

one inch above the tracks. See Figure l6D.

hoist. See

track. Remove the liftins device.

ures 16E and F.

10. Push the breaker in against the track stops. Rotate

the two

track

lock

links to

the compartment door. See Figure 16G.

11. Insert handle on

jackscrew

to move breaker into the compartment. Breaker is in CON-

NECTED

tated.

position

(Indicator

when

should read CONN).

compartment door.

open

place

CABLE COM-

DRUM.

just

under the ball nearest

Fieure

STATTD

breaker mounting

UNDER BREAKER

OPE RATION.

the breaker

out to the limit

lock

the breaker in

shaft and rotate clockwise

jackscrew

can

pull

the right

the hooks

in the

OPERATING

the

take

16C.

mounting

slack out

pins

of its travel

pins

drop

See Fie-

place.

Close

no longer be ro-

the

are

into

Before

breaker

'16

installing or operating a breaker,

instruction

manual for

preoperation

to the

refer

inspection and

Low

V oltoge Swifchgeo

r,

GEK-7

21

01

HOISTING AND INSERTING AKR AND AKRU BREAKERS

With the

NECTED

l. Put the

installed.

be

2.

yellow

the

sembly. Discard the bolt and tag.

3. Pull inner house

inner housing

position

breaker

Be sure it is tripped.

Open the compartment

head and

in the compartment in

proceed

in

front of

the

shipping tag from the track

forward as far as

as follows:

the

and remove the bolt with

door

unit

possible.

in

which

the CON-

it is to

It is now

in the DISCONNECTED position.

4. Rotate the two track lock links,

track

all the way forward. See Figure 16.{.

5. These

them to

there When hoisting the non-fused

hooks are

the fused

Pay

hole in the

fused

breakers require a spreader bar

avoid damaging their

are two

positioned

breaker, the hooks

out enough hoist

center of the spreader bar. Figure 17 shows

breaker,

CAUTION:

PLETELY

CRANK MUST TURN CLOCKWISE TO HOIST

THE BREAKER:

in

slots

spreader

each of the breaker's side frames.

in

the forward slots. When

cable to install one hook in the

bar

DO NOT

FROM DRUM,

COUNTER.CLOCKWISE

arc

breaker, the spreader bar's

positioned

are

and hoist

UNWIND CABLE

LOWER IT.

pull

and

chutes. For

when

in the

cable.

COM-

OPERATING

the right

hoisting

hoisting,

hoisting

rear

TO

as-

slots.

11. Engage

rotate the

end, a high

connect fingers

A couple of turns later, and the stop

position

The

NOTE: DESIGNED

T

ECT IV E B/RR/ERS I

SEE

BREAKER

the racking handle

the handle clockwise as

requirement

force

on the breaker engage the stationary studs.

indicator will now

ALL BREAKER

FOR

FUTURE USE HAVE PRO-

FIGURE 15.

REMOVAL_AK BREAKERS

N ST ALLED T H E

as in Step 8, and

again

far as

it

will

go.

will be felt as

be encountered.

will

CONN.

show

COMPARTMENTS

Towards

the

REI N,

dis-

l. Trip the breaker.

2. Insert

side

handle

of compartment.

3. Rotate handle

stopped.

a

all

the tracks

BREAKER

(Indicator

4. Remove

5. Rotate the two track lock links and

the way forward. The breaker may

handle and open compartment

by the

REMOVAL-AKR AND AKRU BREAKERS

jackscrew

on

counter-clockwise until

read DISC).

should

lifting

device.

shaft

located on

now

jackscrew

door.

pull

the breaker

be

left

hand

lifted from

is

6. Raise

approximately

7. Pull the remaining

and lower the ures 16E and F.

the breaker until the

one inch above

WARNING:

DU

slots

CAUTfON:

FOR/KR

P/ITTS

DO NOT

RI NG HOISTING

breaker so the

in the

track. Remove

THE

BREAKERS ARE ESUIPPED WITH

THAT BRE,4KERS

SO

RECT RATING

TRACKS.

A LOWER

THIS

RATED BREAKER IN A COM-

ST/ND UNDER BREAKER

track out to the limit

TRACKS OF

CANNOT BE SET

PREVEITTS

PARTMENT.

Engage

8.

the racking handle. This is done by

trip button in the breaker

below

shaft.

(if

the two the

to

it

the right, and inserting the handle on

9. Turn the

it

will

10. Push

handle counter-clockwise

move

in that direction) and remove the handle.

the brea*er in against the track stops.

track lock links to lock the breaker in

compartment

door. See Figure 16G.

breaker mounting

the tracks. See Figure

OPERATION.

breaker mounting

pins

the lifting device. See Fig-

/NNER FiOUSES

AN INCOR-

OF

ON THE

/TTSERTION OF

escutcheon,

sliding the cover

as far

pins

its travel

of

drop into

pushing

jack-

the

as it will

Rotate

place.

Close

are

16D.

the

go

1.

2. Engage the racking handle. This is done by

trip

below it to the right, and inserting the handle on

shaft.

3. Turn the handle counter-clockwise as far as it

If the breaker

charged automatically a few turns before the end of the

action.

4. Remove handle and

.5. Rotate the two track lock links and

all the way forward. The breaker may now be lifted

the tracks

the

Trip button

(Indicator

breaker.

in the

by

breaker

closing spring is

should

the lifting device.

escutcheon,

fully

read

DISC.)

open compartment door.

sliding

charged, it will be

pull

pushing

the cover

the

will

breaker

the

jack-

dis-

from

I

FIG.

(8042650)

l5

Provision for future

bq rrier

breoker

with

protective

the

go.

17

GEK-7

2l

Ol,

Low

oltoge

V

Switchgeor

FlG.

tion,

t6A

open

(8035642)

compodmenl

the

Pull

With

out

innerhouse

door'

trock

right

in

Rotote

comPletelY

DISCONNECTED

trock

lwo

the

lock

posi'

links'

l8

FlG.

l68

(8035640)

Let

out

Hoisl

Coble'

Ploce

hooks

in slots

Low

Voltoige

Swifchgeo

r,

GEK-72101

FlG.

l6C

(8035639)

must

Adiusr

be

under

coble

boll

to

bolonce

neorest

ihe

breoker,

hoist

Coble

eye

FlG.

l6D

(803563,

Roise

one

breoker

inch

unril

obove

mounting pins

trocks

ore

obout

t9

GEK-7

21

01,

Low

Vohoge

Swif

chgeo

r

FlG.

t5E

(803564.l)

Pull

left

trock

oul

completelv

20

FlG.

t6F

(8035635)

Lower

tne

the

Breoker

Hoist

Coble

into

the

lrock

slots'

Remove

Low V

oltage

Switchgeo

r,

GEK-721 0l

FlG. l6G

(8035636)

lhe two

Push the breoker in compleiely

trqck lock links. Close the

door

ond

roiote

i;'l

FIG. 17

.

(8041582)

AKRU or

AKR breoker

coble

ond spreoder

on

hoist

2l

GEK-7

21 01, Low

V olt

ge

Switchgeor

o

BREAKER

CTOSING

Manually operated AK

the

120 degrees, and then

position.

required

wise movements and the first three clockwise of the handle,

70 degrees travel of the fourth clockwise

the spring charged breaker

through the breaker

complete handle

CLOSING MANUALLY OPERATED AKR

Manually

handle and a the escutcheon. The closing spring must be charged

A complete

handle counter-clockwise

then

three similar cycles of about 50 degrees

indicator should read CHARGED at

breaker can be closed by

CLOSING ELECTRICALLY OPERATED AK AKR BREAKERS

Electrically operated

control

power.

They may

breaker escutcheon, by a breaker control switch, or by a relay

in the equipment which houses

some remote

OPERATION

MANUALLY

handle counter-clockwise

closing

such complete movements

Four

to

close the breaker.

the springs are charged. After

A charge indicator, numbered 1 to

closes.

OPERATED

breakers are closed by

clockwise

mechanism is driven over center

back

During the

front escutcheon, moves

movement and indicates the

movements that have been

operated

push

charge

clockwise back to the normal

power,

be

contact. The control switch

location.

AKR

breakers

marked CLOSE on

button

is accomplished by

through

pushing

breakers may be operated by ac

(normally

or

dc

controlled by

a

the breaker, or may be in

BREAKERS

AK

through approximately

fhe normal handle

to

of the handle

four

handle movement,

rotating

counter-clock-

moveroents

approximately

and the

4, viewed

with each

number of

performed.

BREAKERS

are

equipped

either

about 135 degrees and

position

each. The charge

point.

this

the CLOSE button.

OR

station battery) control

pushbutton

relays may

or

with

the

front of

rotating the

or by using

Now the

switch on the

located

be

are

first.

NOTE:

FER

NISHED

FOR FURTHER IiVSIRUCflONS RE-

TITE /NSTRUCTION BOOK FUR-

TO

WITH

TESTING AND

Although

the factory, they must be tested and inspected before being

equipment has been

tions

the equipment and devices have been tested at

placed

are correct.

All bolted connections and

should be

a

Directions

given

The settings

other relays

must be made by the

setting the relays

The extent

depend on the type and function which

operation, and

checks.

checked for tightness.

WARNING:

PRIMARY ESUIPMENT

BE COMPLETELY DE-ENERGIZED ?ESTS ON

BEING

,4RE,4S

CONTROL CIRCUITS, ETC, ARE

CONDUCTED. BE

FEEDBACK FROM

OF CIRCUITS AS ARE

DISCONNECTED.

for testing

in the instruction book

protective

of

on the

NOTE:

CLL BREAKERS

THE TRIP DEVICES LEVEL. BEFORE ENERGIZING THE ESUIP-

MENT, CHECK TO SEE THAT ALL TRIP

DEVICES

VALUES,

should be

ARE SET

of the tests on

performed,

switchgear metering,

THE BREAKER.

INSPECTION

in service.

properly

This will insure that the

iostalled, and that all connec-

control wire connections

SURE

THAT

SECONDARY

WELL AS OUTS/DE

relays,

instruments and

furnished for

relays must be

system and therefore these

are

given

purchaser.

General

the Relay Instruction

in

ARE SHIPPED WITH

SET AT THE MINIMUM

AT

THE PROPER

the

equipment

of the equipment. Tests

however,

include circuit breaker

phasing,

the field

in

MUST

WHILE

ALL

SOURCES

meters are

each device.

coordinated

instructions on

as a whole will

and

relay

grounding

settings

Book.

with

MANUAL TRIPPING_AK

A mechanically

operated trip

breaker escutcheon, operates

breaker.

ELECTRIC TRIPPING_AK

A shunt

trip

device is

AKR BREAKERS

OR

button,

mouuted

the trip shaft

OR AKR BREAKERS

an accessory used for electrical

tripping. A normally open auxiliary switch

opens the control circuit after the

22

breaker opens.

on the

to open the

"a" contact

potential

High

tion are

not necessary

carefully followed. If local codes demand

purchaser

should not

For the

times switchgear rating

power

CAUTION:

CONTROL

ANY OTHER DEVICES

PRIMARY

tests

to check

if the

to make high

wishes

exceed 75% of the

circuit

the

plus

the

integrity

installation instructions are

potential

ANSI

factory

ANSI factory

1000 volts.

POTENTIAL IRAiVSFORMERS,

POWER TRAJYSF.ORMERS, AND

CONNECTED TO

CIRCUITS

MUST BE DISCON-

this test or the

tests, the voltage

test

NECTED DURING HIGH POTENTIAL TESTS.

of the insula-

test voltage.

voltage is

two

low Volfoge Swifchgeor,

GEK-72101

KEY INTERLOCKS

After initial installation

necessary

propriate

hands of a responsible schematic included equipment

correct

is necessary the interlocking

BREAKER

All

interlock

locks and all

to determine

number

compartments

of operating

since improper

scheme.

OPERATION TEST

keys should

in

the

of

switchgear equipment, all

inserted

be

spare keys should be

person.

the summary

the sequence of

housing all

Refer to the key

furnished with the

keys required.

use of spare keys

AK and AI(R circuit

into the ap-

placed

in

the

interlock

operation and the

precaution

This

will defeat

breakers have a

mary contacts are

tacts

are still

testing

the into

of the electrical

primary power

service, its

while in this

tripping circuits

The

TEST

mqintenance

TEST

disconnected

engaged. This

circuit. When

control circuit

position

are complete

position

of the

breaker, and should

only for testing breaker

position,

TEST

control

to

make

and functioning

is

not suitable

operation.

in

which

the

breaker

pri-

while the secondary con-

position permits

complete

circuit without energizing

the breaker is first

must be

sure

thoroughly

that

all closing

properly,

for inspection

therefore

be

tested

and

used

put

JL--

1J_-

Jl-

-LJ-

j-rr

xrnowrne

-

FOR AI{CHOR]

FlG. l8

(0121C1508)

Side view

of breqker

stock

23

GEK-721 01, Low

V oltoge

Swifchgeor

a9

.2'

.tr

(0625E0376)

RACKOUT

MECHANISM

FlG. l9

OPERATION

Rqckoui

AK BREAKERS

part

Part numbers in Figure 19 refer to

Drawing

0673D0500

Sheet 627 Groups 05

The rackout mechanism is operated

handle onto the

the handle. Clockwise house

and

end of

counter-clockwise

out. Approximately 17 turns of the handle will

breaker

position.

shaft, the slot

square hole in the handle will be engaged with the square

drive end of

breaker must be

inserted.

operated age on the rackout mechanism

from

end.

in the

also assures

through

24

from the DISCONNECTED

properly

To

engage the handle

in the end of the handle should align

through the

The rackout mechanism

shaft. When the

the

shaft.

open before the operating

When the breaker is

by the

breaker

moved

being

The

pin (105)

back to fully

in the

tube. This slot

that the interlock linkage must be moved

prescribed

a

distance

jackscrew

the

rotation moves

the breaker

rotation moves the

to the CONNECTED

interlocked so that the circuit

is

cross

prevents

closed,

blocks

bar

prevents

and

jackscrew

expose

shaft

rotation of the

before operation

numbers on

or

06.

pushing

by

rotating

and

shaft

into

breaker

move the

jackscrew

the

with

with the

aligned,

is so

handle can be

an interlock link

shaft

mech-

link-

(63)

and

the interlock

the tube

the square shaft

engages in a slot

of the

the

n

mechonism for AK breokers

anism is

will clear the

engages a trip link on the side of the breaker and holds

trip free

tube

the breaker trip free as

NECTED

into operation before the

and is operable whether or

gaged.

tween the

the TEST to the

can be closed when the rackout handle is disengaged

the

lock tube

position.

in the front of the door

the

indicator

line

can

interlock tube are aligned

engaged. The secondary

gaged

this

possible.

as

is in the retracted

There is also a stationary

and

The

TEST

When the tube is

pin,

a cam surface on the interlock slide

long as the handle is

TEST

breaker thus cannot be closed when

position.

positions.

and the CONNECTED

DISCONNECTED

in the

so

label

jackscrew

that

(75)

marked

is

the interlock linkaee

which

shows the

position

TEST is aligned with

housing. In this

when the

An indicator

house. The TEST

on the indicator

be operated

control

and the

position.

primary

cam

it is

primary

not

aligned

is visible through

pin (105)

and

power

pushed

engaged

in the

moved

back so that it

or the interlock

house which

between the CON-

This stationary cam comes

disconnects have

the rackout

handle is en-

it is be-

positions.

position,

the breaker

with the slot in the inter-

is in the reset

an opening

position

is

reached when

the rackout handle is dis-

power

disconnects are open in

of the breaker in

the line on the

the stationary

position,

and

disconnects

the breaker

the slot in the

(46)

it

holds

parted

From

and

are en-

&*-

I n),.i-

llll

ll'j-.-.'-

tp

Low

Vohage

-1#

q.)'

L

,/

FlG. 20

(75E180001)

Rockout mechonism

L

for AKR breqkers

Switchgeo

r,

GEK-72101

DISCONNECTED

The

indicated ing the end

that

and the can be closed

by the sight indicator

its

of

when the CONNECTED

interlock tube slot

travel. The adjusting nuts

upon

and CONNECTED

removal

DISCONNECTED position,

jackscrew

the

The motion

at any

point

to match

of the rackout

in the

cycle by reversing the

tation of the handle.

EMERGENCY

If necessary,

the

house

done

by rotating the

been tripped

primary

Ffowever,

far enough

stop

links

automatically

If

it is necessary

when the

tion, the

interference

stop link. It

with masking

this manner.

pushing

aid in

OPERATION

possible

it is

without using the rackout

and

disconnects.

the breaker

to engage

(49,

50) are retracted.

when normal

the breaker manually

cannot be reinserted into

the

track lock

pulling

to insert

rackout mechanism

stop links must

or

the breaker mounting

is recommended

tape

when attempting

The inertia

it onto the

of the breaker can then

primary

positions

and by the

jackscrew

(78)

position

will be

is reached, the

aligned

and the breaker

of the rackout handle. In

it may be necessary

the slot in the interlock

mechanism can

to remove

mechanism.

links

after the

primary

be retracted and held

disconnects

The stop links retract

racking

procedures

the breaker into

is in the

that the

CONNECTED

stop

to insert the breaker

disconnects.

be reversed

direction of

the breaker

breaker has

has

link

be held

be used to

are

reach-

are set so

the

to rotate

tube.

ro-

from

This is

off of the

the house

unless the

are

used.

the house

posi-

until the

passed

the

up

RACKOUT MECHANISM

AKR BREAKERS

Part

numbers in Figure

in

bers

on the breaker itself and a description

mechanism are

the

0673D0500

rackout mechanism for AKR breakers

The

given

The rackout mechanism is operated by

handle the

house and counter-clockwise rotation moves the breaker

out. Approximately 18 turns of the handle will

breaker from the

position.

breaker

inserted.

operated by the breaker mechanism locks the sliding

over the racking screw in the breaker escutcheon. To insert

the

the sliding cover insert-:d the cover is held open and the breaker is in a

onto the end

handle.

Clockwise rotation

DISCONNECTED

The rackout mechanism is interlocked so that

must

be open before

When the breaker is closed,

racking

handle the trip button must be depressed, and

pushed

20 refer to sheet and

series

of drawings.

in Maintenance Manual

jackscrew

of the

the operating handle can be

to the right. When the handle is

OPERATION

part

is mounted

and details of this

shaft and rotating

moves the breaker

to the

GEK-7310.

pushing

CONNECTED

the circuit

an interlock link

num-

into

move

cover

the

trip free condition. As long as the handle is engaged, the

breaker remains trip free.

There is also a

breaker trip

and

TEST

to

the breaker trip shaft

part

in

20,

before the

whether or not the rackout

841-01. This stationary

stationary cam in the house which

free as it is moved between the CONNECTED

positions

primary

by

keeping a lever

in the raised

disconnects have

cam comes into

handle

which is connected

position.

parted

is engaged.

holds

the

See Figure

oper..tion

and is operable

The

breaker

25

GEK-7

Low V oltoge Swilchgeor

21 0 l,

thus cannot

the CONNECTED

CONNECTED the rackout

be closed when it is between

position,

handle is disengaged.

An indicator,636-03,

front of the door,

in the

the house. The on the

stationary

position.

indicated by nism reaching the rackout stop the

at both

indicator label

breaker gaged.

gaged

can be

The

and the

DISCONNECTED

The

rotation

ends

mechanism versing

the direction

CAUTION:

BREAKER

TEST

on the

line

operated

secondary

primary

the sight

the

mechanism

of the

be reversed

can

WHEN

ON THE

SERT/ON,

HOUSE

SIBLE TO

BEFORE PULLING

,,HOISTING

IS PULLED

THE

AKRU BREAKERS"

TEMPT THE

IS MADE

TRACKS

PARTMENT

THE CONNECTED

IN

NOT GO

WILL

(634-47

TRACK

TO

RACKOUT

ALL

BLOCKED

BE

FIGURE 2O).

IN

LOCK

THE LATCHED

MECHANISM

TION CORRECTLY.

the TEST

positions. From the TEST to

the breaker can

is visible through

which

shows the

position

marked TEST

indicator housing.

when the

control

power

and CONNECTED

indicator

its travel.

end of

(located

of the racking

action. The

of rotation

position

is reached

rackout

power

disconnects

and by the

on the

arms

any

at

of the handle.

motion of

point

MOUNTING

TRACKS

BE SURE

THAT

OUT

AS F/R

DISCONNECTED

THE TRACKS

/]VSERTIJVG

AND

WHILE

1{ND

ON PAGE

TO SET

IT INTO

FUSH

THE

A BREAKER

INNER

be closed when

of the

is aligned

In this

handle

disconnects

are open

rackout

The adjusting

breaker)

at the

in the

AKRTYPE

AN

PRIOR

THE

POSITION

OUT.

AKR

IF AN

17. THE

HOUSE

POSITION,

BECAUSE

THE WAY

LINKS CANNOT

IN

BY THE

AT THIS

BE

POSITION

WILL

STOP

POINT

ROTATED

AND

NOT

the DIS-

opening

an

breaker in

the

when

with

position,

is disen-

are

positions

mecha-

nuts on

are set to

correct

the rackout

cycle by

IN-

TO

IN]VER

POS-

.4S

SEE

AND

AT-

ON

COM-

IT WILL

IT

L/1VKS

THE

FUNC.

and

line

the

en-

in this

are

points

re-

IS

NOTE:

THE

DESCRIBED

PAGE AKR OR

25 CANNOT

AKRU

FERENCES

ANISMS.

"EMERGENCY

FOR AK-75/

BE PERFORMED

BRE.AKERS

IN THE

DRAWOUT

BREAKERS

lOO

DUE

OPERATION"

OJV

FOR

DIF-

TO

MECH-

KEY INTERTOCKS

KEY INTERIOCKS

Part numbers

in the 0673D0500

bers

The key

and lock

removed

the lock

breaker is rendered trip

sition in the house.

washers

The interlock

from the lock

bolt

The

breaker may be operated

FOR AK BREAKERS

in Figure 21

series of drawings.

interlock is

mounted with

to the

system is designed

is

extended.

refer to sheet

left side

if the breaker

only

When the bolt

free only in the CONNECTED

TEST or DISCONNECTED

lock bolt is extended and the key removed.

The operation of the key interlock should

as follows:

l. With the breaker

trip the breaker.

ually

(622-66)

slide is with the

in, the lock

to be

rackout operating

bolt

in the CONNECTED

This then allows the

pushed

may

in. The

handle. When the trip

extended

be

The interlock slide may then be allowed to return to its

normal reset

the CONNECTED

the lock

position.

position

bolt is retracted.

The breaker

until

2. If desired, the breaker may be moved

TEST or the DISCONNECTED

removed from the lock.

is

operated for checking

be

In

these

maintenance.

or

(OPTIONAL)

and

one-way screws

two

inner house.

of the

so that

the key

is tripped

is extended,

(closed

positions

preferred

and the

will

the key is returned

tripped)

and

even when

position,

interlock trip

way

key removed.

remain trip free

to either the

position

positions

while

the breaker

part

num-

may be

and

the

po-

in the

the

be checked

man-

this

to do

slide

and

the key

can

is

in

26

FlG.

(Ol2lCl5O7)

2l

Key

IMIERLOCK TRIP SLDE

Interlock

AK breokers

for

522.66

P',,

KEY

LOCK

{INNER

HOUSE

HoUsE

CAM,mRT

S|DE SHEET

0F 84t-01

Low

Voltoge

Swifchgeor,

GEK-72101

KEY INTERLOCKS

The

key interlock

and lock

removed

the

breaker

sition in

TEST

bolt is

as follows:

ually trip

slide

lock

breaker

until TEST

is

can

washers

The interlock

from

lock

bolt is

is rendered

the

house.

The

breaker

may

or DISCONNECTED

extended

The

operation

1.

With the

(837-06)

bolt

the

2. If

removed

be operated

breaker

the

breaker.

to

may be

will

remain

key is

desired,

or

the DISCONNECTED

from the

FOR

is

to

the left.

system

the lock

extended.

trip

be

and the

of

the

pushed

be

extended

trip

returned

the

breaker

lock.

for

checking

FlG.

AKR BREAKERS

mounted

is designed

only if the

free

operated

with two

side of the

When

the bolt

only

in the

(closed

positions

so

that the key

breaker is

key removed.

key interlock

in the

CONNECTED position,

This

then

allows the interlock

in.

When the trip

and

the key removed.

free

in

the CONNECTED

and

the lock

may

bolt

be moved

position

In these

positions

or maintenance.

(75C150021)

22

(OPTIONAL)

one-way screws

inner house.

may

tripped

and

is extended,

CONNECTED po-

and

tripped) in

even

when the lock

should

be checked

the

man-

trip

slide is

in, the

The

position

is retracted.

to either

the

while the key

the

breaker

Key Interlock

be

the

for

AKR

breokers

compartment

tached to

being swung

The fuse rollout

compartment

breaker

door

the left side

open

directly

with

which the

this compartment

into

a compartment.

NOTE:

THE

ROLLOUT

TRACTED

RACKED

INTO

is opened.

unless the fuse

is

usually located

the same

See Page

KEY LOCK

An interference

of this

below

fuses

will be

way an AK

panel

rollout is

the compartnient

16.

BOLT

COMPARTMENT

BEFORE

THE

CONNECTED

ROLLOUT

angle

prevent

to

fully withdrawn.

in

a modified

used. It is

breaker

IN THE

MUST BE

CAN BE

POSITION.

is at-

it from

breaker

for tlic

put

into

is inserted

FUSE

RE-

KEY INTERTOCKS

AK

breakers

be

equipped

assembly.

they

are

used

for the

rollout

A hinged front

When

mounted

element,

panel

of

the fuses

with

breaker.

FOR

that

fuses

inside

and

made

so that

FUSE

ROLTOUTS

are

used in AKD-6

as an

integral

are required

a

drawout

This

a typical

assembly

perforated

of

model

they

with these

frame

is shown

steel

cannot

(INCLUDED)

switchgear

part

of the

similar

is

known

in Figure

positioned

is

be reached

cannot

breaker

breakers,

to that

as a

if

fuse

23.

the

in

FlG.

(8040045)

23

Fuse

Rollour

used wirh

AK

breokers

27

GEK-7 21

01, Low

V

olta

ge

Swifchgeor

ERLOCK SLIDE

r09c2075-31

RIVETS

1o9c2075-26

TRACK

LOCX

LINK

FlG.

ment to

CONNECTED

it is locked

compartment in the normal companion key interlock is

compartment. Figure

ing devices

extended.

that the racking wrench shaft, This

(75C15002D

24

There is a key

keep the

position

open. A key interlock

in

this compartment

Note that the interlock slide

prevents

Key

Interlock

interlock system required in

fuse rollout in the CONNECTED or DIS-

unless the

24 shows the

cannot be

the fuse rollout from being racked out

of its compartment. Note also

in Figure 24. This holds the

position

fuse rollout position

numbers in the

when the lock bolt is

from being

rotating

by

In

Figure

the

24

0673D0500

pulled

the track lock links.

part

numbers refer to sheet and

series of drawings

fqll drawing number is shown.

When the equipment is

breaker the

rollout,

lock slide

removed.

rollout

the position.

closed, the intedock

breaker compartment. In order

the associated breaker must

pushed

The key

compartment and

fuse rollout can be racked

in,

the

is then

lock

placed

the lock

for

R HOUSE

Fuse

SIDE SHEET

LOCK MOUNTING

Rollout

comportment

HOLES

the equip-

breaker associated with

is installed in the breaker

position. (See

Page

26) A

installed in the fuse rollout

position

when the key lock bolt is

of

the

interlock-

is held forward so

placed

over

the interlock bracket

lock link in

track

extended and

the

out of

operating

normally

jackscrew

the

shown

the closed

prevents

the

CONNECTED

part

except

when

with the

key is retained in the lock in

to withdraw the fuse

tripped, the

be

bolt

extended,

in

the lock in the fuse

and the

inter-

key

bolt is retracted. Now

out

DISCONNECTED

to the

The operation

checked

ceding

by following

paragraph.

of the key

procedure

the

interlock system should be

outlined in the

pre-

DOOR INTERTOCKS

These interlocks

door

when the breaker

DOOR

INTERLOCK FOR AK BREAKERS

Part numbers

bers in the

0673D0500

This door interlock

on the inner

prevent

opening of the

is

closed.

in Figure 25 refer to

series of drawings.

consists of a link

house side sheet of

the

breaker

compartment

(OPTIONAL)

sheet and

(074-03)

compartment.

part

mounted

num-

A combination torsion, compression spring is mounted on

the

tion.

(640-02),

anism interlock slide a link operated

in

back. and then

from back by use

by

retracted

hole is

By inserting

the link

latch.

be raised

DOOR

bers in the

a

the

link

mounted

When and the assembly When the door is closed-with

partment,

bottom of away from the

the link Closed"

the

cannot

pivot pin

link

One end of the link engages a clip on the

and

the interlock slide. This

the

When

link

the

pushing

the rackout

raising

the handle while the interlock slide is held

position.

If required, the

provided

can be

With the link

and the door ooened.

TNTERLOCK FOR AKR

Part

numbers in Figure

This door

compartment

(8a4-03),

on the rear

the

door is open, the

the bracket on the

the link

and hook assume

portion

keeper swings

be opened.

and biases the link in a forward

the other end engages

627-46. When the breaker

the breaker cross

by

the door handle cannot

breaker is

actuated by the breaker.

it

handle. The door can then be unlatched

door interlock can be

prevents

open, the interlock slide is released

in. The

preferred

with

bar engages

the slide from

It

way

in the door in front of

a tool such

pushed

0673D0500 series of drawings.

interlock does not

door latch.

spring

of the compartment

is held against

(844-03)

door. When the door is

of Figure

up

a screwdriver

as

back until it is free of the door

held in

this manner,

BREAKERS

26 refer to sheet

operate in conjunction

It consists

(844-35),

and

spring

of a hook

bracket

door. See Figure 26.

pulls

the back of the

an open

breaker

and

positions

the

26. When the

and under

breaker in the

pushes

rotates

closed and latched,

shown

the

hook, and the

direc-

door latch

the

rackout

mech-

is closed,

in a

slot

moving

lifted.

be

now

can

to

defeated.

the

through this

the door latch can

(OPT|ONAL)

and

down on

the top of the

breaker is closed,

moved

be

do this is

A small

interlock

part

(844-04),

(844-05)

the hook,

against

in the

in

link.

hole,

num-

with

door. com-

link

"Door

door

to

the

all

the

28

INTERLOCK

OR

INTERLOCK

o74-03

INTERLOCK

SLIDE

6?7-46

SPRING

LOCK PLATE

622-02

PADLOCK

CUSTOMER

DOOR

LATOH

-

640

02

DOOR LOCKED

Low

V oltoge

DOOR INTERLOCK

BY

Swifchgeo r,

GEK-7

21 01

BREAKER

CLOSED

BREAKER

OPEN

FlG. 25

HOOK

(0121C1509)

844-04

844-03

LINK

KEEPER

ON

BREAKER

Door

Interlock

breokers

ond Podlock

BRACKET

844-O5

DOOR

ACCESS

LOCK

4-35

BRACKET

BREAKER

device for AK

HOLE

ON

DOOR

CLOSED

FlG.

(75CI50023)

26

Door Interlock

for

AKR

breokers

DOOR

OPEN

29

GEK-7

21

01,

Low

oltage

V

Swifchgeor

When the

compartment,

rotate away

back

the

be lifted

will

drop into

the door

When

away from

and

be opened.

door is

from

side of

position

the

closed.

the breaker

If required, this

ing a small

door above the bracket.

the

of the hook toward

tool such as

top will move up

held in this

hook

opened.

RACKOUT

These devices

may be

anism

unauthorized

PADLOCK

operation.

DEVICE FOR AK BREAKERS

closed with

the bracket

the door.

the hook contacts

over the

shown

is opened,

the hook, and

door interlock

the

and away from

position,

MECHANISM PADTOCK

are arranged

padlocked

This accessory consists of

is riveted the

ure 25.

slot in the

the

to the inner

slot of the extension

When one

plate,

jackscrew

cannot be

house side

to three

interlock slide cannot

the

can be locked anywhere

open the compartment

in the device,

interference

closed at will.

PADTOCK

but once

with the door

DEVICE FOR

This accessory

padlock

for

side

unit

occupy the upper

ure 7 for a

when

position, rackout mechanism can

with this device.

used

out device

sions for locking

shackles.

sheet

pictorial

the inner house is

and tbese are the only two

is furnished. This has

ing the multiple

must be but

been

opened to

there is

placed

no

position.

in

door in order

consists of two

One of the

and the other

left

corner of

view of the

If more

the ring with six

padlock

put

interference

the breaker

on

ffowever,

a closed

causes

when

breaker

the slope

the keeper, the hook

top of the

in Figure 26,

the keeper

the compartment

can be defeated

a screwdriver

This will

keeper

and will

thereby

swings

through the

push

the

rear of the compartment

the keeper,

the door

in certain

a slotted

on the

padlocks

turned. The

in its travel.

can be unlatched

so that

the rackout

positions

(OPTIONAI)

piece (622-02)

sheet. The slot

interlock

are inserted

rackout mechanism

It

place

to

DEVICES

slide. See

retracted and

be

necessary

is

the

the locks are secured,

and the door

AKR BREAKERS

to the inner

the compartment.

in

the TEST

be locked. Only one

padlocks

function.

padlock

the

with the door

may be opened or

(OPTIONAI)

plates,

each having

plates

is bolted

house. They

device. The

or DISCONNECTED

positions

padlock

are required, a

a single

padlocks,

The compartment

ring and

thus

or lockout

after they have

in the

the link

by insert-

lower

to

there

on

again

holding

down

door can

hole in

part

and the

With the

and

mech-

prevent

which

matches

Fig-

the

into

padlocks

is no

holes

to

to the

Fig-

See

holes match

in which the

can be

lock-

provi-

perform-

door

device

on,

NOTE:

MUST

GESTED

TO

PADLOCK SHACKLE

BE FROM

rHrCr(iVESS

DEVICES

FOR

BRElKERS.

MAINTENANCE

periodic

A

obtain

check and

devices and

mum requirement.

operation

permanent

A

The record should

kept.

and tests made, of the equipment

performed.

were

recognized

National

safety regulations

WARNING:

ING

POWER APPARATUS

LIED UPON

PERSOJVIVEL.

For specific

devices,

to the separate

BRE.AKER

Breakers-Test and inspect

operation

maintenance

the best service

overall maintenance

all connections

Equipment

may require

more frequent

record of all

the date they were

and and any

Maintenance employees

practices,

safety

Electrical Safety

during

SOLID

ENERGIZED

AN

TO PROVIDE

information regarding

such as circuit breakers,

instruction book furnished

AND

INSTRUMENT

as follows:

a. Operate each breaker while

and check all functions. breakers

positions

closed

WARNING:

normally remain in either the opened or

that

for long

PRIMARY EQUIPMENT MAST

BE COMPLETELY

BEING CONDUCTED.

/REAS OF

CIRCUITS

JRE DISCONNECTED.

Remove the breakers from their compartments

b.

maintenance area.

clean suggested

in the appropriate

FEEDBACK

AS

WELL

Perform the maintenance

?IIICK,IVESSES

I/+1,

IS

BOTH AK AND AKR

schedule

from

should be

include a list of

3/8,,

TO

/tu!!.THIS

THE SUG-

APPLIES

must be established

the switchgear.

procedure

subject

maintenance work

repairs

the switchgear

for

followed

to highly

maintenance.

periodic

the condition

made,

-or

adjustments

must follow all

such as those

Code and in company

maintenance.

LATIO]Y SURROUIVD-

INSU

contained

CONDACTOR

MUST NEVER

BE RE-

PROTECTION TO

the maintenance of

relays, meters,

for each device.

COMPARTMENTS

all circuit breakers for

in the TEST

periods

particularly

time.

of

This is

DEENERGIZED WHILE

BE

SURE

FROM SECONDARY

/S

OUTS/DE

breaker maintenance

important for

THAT ALL

SOURCES

annual

An

as a

repetitive

should

checks

in the

or other

AND

etc., refer

proper

position

operation

manual.

to

mini-

be

that

to a

30

Low

Yohoge Switchgeor,

GEK-72101

WARNING:

PLETELY

WORK

BAS

COMPARTMENTS.

ENERGIZING ANY SIDE PRIMART

SUCH .eS ?RAIYSFORMERS, TIE

INSTRUMENTS,

DE-ENE

BEFORE

RGIZE EQAIPMBNT COM-

DOING MAINTENANCE

ON ANY DEVICES, CONNECTIONS,

WORK, BREAKER

OR

INSTRUMENT

OR FEEDER CABLE

THIS

CONNECTIONS TO OUT-

SECO,NDART SOURCES,

INCLUDES

TRANSFORMERS

AND RELAYS

Check

and inspect all devices

tioning

tight. Check

BREAKER

ment compartments.

only. Do

compressed air is not recommended.

locks.

signs of abnormal

silvered

properly.

COMPARTMENT

a. Thoroughly clean interior of the breaker

not use

b. Check indicating devices, mechanical and

c. Check

surfaces is

Check that

mounting

primary

of the device.

IJse a

steel

wool or oxide

disconnecting device contacts for

wear or overheating, Discoloration of the

not

ordinarily harmful. These contacts

should be cleaned only by

Before

replacing the

wipe ofr the

a

thin coat of contact lubricant D50H47

and fingers

primary

and to the

breaker, check

disconnecting device contacts. Apply

primary

to see that they

all electrical connections

INTERIORS

vacuum cleaner and clean rags

papers.

wiping with

disconnects

DE-

LINES, ETC.

are func-

are

and instru-

Blowing with

key

inter-

a

lint-free cloth.

the alignment

and

to the house studs

the

on

breaker.

readings.

nance

corded

lar conditions

include the

FEEDER

heating,

nection

Weakening

period

to the next

readings. The

each time, if

temperature and

CABLE AND BUSWAY

a. Inspect

b. Check all bolts that

all

and tighten

bars for

c. Check neutral

mounting

are

OVERALT

where necessary.

bolts

d.

Check that all secondary

tight

and that

SWITCHGEAR

a. Clean and inspect

b. Check to

tural

bolts are

c. Check

door latches

tight.

that

operate

Under normal

operate;

of

Book

PAINT

therefore,

these

devices

for tletailed instructions.

REFINISHING

of the insulation

can be recognized from

readings should

main cable

all connections.

tightness.

bus and

for

tightness.

all control

all

see that all

all breaker

properly.

conditions,

it is important

regularly.

from one mainte-

possible,

be taken under

and the record should

humidity.

COMPARTMENT

connections for signs of over-

hold cable terminals

ground

cabling is intact.

painted

anchor bolts

and instrument

the

Refer

bus

control

wiring connections

surfaces

protective

check

to

to the Relay Instruction

to the,con-

connection and

and retouch

and other struc-

compartment

relays do not

the

operation

the re-

simi-

BUS

COMPARTMENT

Before

formed cover

nished with the equipment.

the following can be

between units if such covers have been fur-

performed,

remove

a. Inspect the buses and connections carefully for

evidence of overheating

supports.

b. Check all connection

and

all bus mounting and

c. Wipe and vacuum

d. Check

breaker studs

partment.

e. After

ground

buses and

checking resistance.

Since definite

sulation

the insulation

through the

cleaning, megger and

and between

connections.

phases

Disconnect

Do not

limits cannot

resistance

values,

or weakening

bolts in the bus

bracing bolts for

clean the buses and supports.

on the bars

structure

bus

of

all

use over a 1500

given

be

a record

of

the

compartment

tightness.

that run from

to the cable com-

record the

insulated

resistance

bars, and all

all control circuits before

volt megger.

for satisfactory in-

must be kept

the

steel

insulating

the

of the

Indoor

Aqualure

an electrostatic finish damaged

oil

Gray Glidden

02111,

touch-up

of ANSI-61 for

Tie-Cote

Diamond

IC-0702.

rust, scale,

with ANSI-61

Cat.

to

ing

Cat. IC-0702,

switchgear is finished

Paint,

grease.

or

Outdoor

Sand any scratches

using

Semi-gloss

a spray

purposes.

switchgear

gray

the second coat

Lacquer

Vogel ANSI-61

To

refinish damaged

oil

or

Gray

468-E-02111

with Diamond

rising spray

Cat. 478-E-02115,

spray system

areas, remove

is

paint

is ANSI-61

Cat. 468-E-02111

grease.

Glidden Semi-gloss

prime

as a

Vogel

with ANSI-61

which is applied

and is oven baked. To re-

smooth.

paint,

Apply ANSI-61

all loose

Tie-Cote'Lacquer,

can

supplied by the factory

finished

over the

with an

baked finish. The

gray

additional

Glidden Semi-gloss

and the

Gray Acrylic Lacquer

areas, remove

Sand

any scratches

coat,

ANSI-61

cans

supplied

Tie-Cote

and finish

Gray

Acrylic

by the factory.

Gray Glidden

with

rust, scale,

468-E-

Cat.

for

coat

primer

final coat is

Cat.

all loose

smooth.

coat by spray-

paint,

Spray

Lacquer Lacquer

3r

EEilERAT

DrsrRrBuTt0il

EI,ECTRIC C(|.

t0urPtEltT 0lYtsr0il

PtililYtLLE, C0ilt. 06062

GENERAL@ErECTRlc

Printed

in

u.s.A.