GE AKD-6 Bedienungsanleitung

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

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.

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

=a NOI FUFNISHED

/l wrrH EoUTPMEN?

/ | rrE 'ABLE 1

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.

'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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u4 )

FULL

HEIGHT

WIRE

TROUG

WHEN

WIREWAY,

BREAKER OR

INSTRUMENT

COMMRTMENT.

. MENT

CAB-E

BREAKER

COMPARTMENT

BREAKER

COMPARTMENT.

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

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.

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