GE CR194 Manuale utente

194

Vacuum

Limitamp

Control

One

High

Controllers

with

Stationary

Vacuum

Contactors

Caution

Product

not

ount

Wended

for

nuclea

ruse

Utilization

Voltage

2.4

through

7.2

kVac

wide

and

wide

One

High

400

Amp

(

For

wide

800

Amp

see

GEH

5396

)

mttin

pifclkiraiiiii

iiaiOTMflli

pfiKHi

liiliU

‘

wasii

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

Table

Contents

Introduction

Description

Equipment

Identification

Number

Designation

General

;

Ratings

Basic

Impulse

Level

(

BIL

)

Dielectric

Test

Voltage

High

Voltage

Vacuum

Contactors

Blown

Fuse

Indicator

Manual

Disconnect

(

Isolating

Mechanism

)

Mechanical

Interlocking

Auxiliary

Enclosures

Dimensions

Power

Fuses

Power

Fuse

Conversion

Instructions

Starting

Autotransformers

Reactors

Installation

General

Receiving

Handling

Placement

Enclosure

Disassembly

Sequence

Operation

Grounding

Incoming

Power

Connections

Motor

Connections

Extra

width

Enclosure

Power

Cable

Termination

Control

Connections

Reassembly

Replacing

Contactor

Enclosure

Mechanical

Operation

Check

Operation

General

Test

power

Circuit

Preparation

Controller

for

Operation

Normal

Operation

Door

Opening

Procedure

Inspection

Maintenance

Servicing

Vacuum

Contactor

Isolating

Mechanism

and

Mechanical

Interlock

Checking

Procedures

Mechanical

Interlock

Manual

Isolator

Vacuum

Interrupter

Integrity

Test

Procedure

Preventive

Maintenance

Guide

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

The

essential

control

functions

for

all

types

motors

consist

starting

stopping

and

overload

protection

Vacuum

Limitamp

controllers

also

include

short

circuit

protection

but

other

functions

are

provided

each

controller

they

are

applicable

the

type

motor

being

controlled

(

such

synchronous

and

wound

rotor

motors

)

Also

special

functions

are

provided

great

variety

may

required

for

particular

applications

These

instructions

were

prepared

guide

handling

installation

operation

and

maintenance

all

one

high

400

Amp

types

Vacuum

Limitamp

controllers

This

includes

the

inch

wide

one

high

and

the

inch

wide

one

high

controller

Figure

shows

inch

wide

controller

and

Figure

shows

inch

wide

synchro

nous

controller

The

intent

these

instructions

give

the

Purchaser

the

necessary

general

information

identify

his

control

ler

type

and

function

describe

suggested

methods

installation

and

demonstrate

some

techniques

operation

and

maintenance

The

Pur

chaser

should

interpret

these

instructions

for

applicability

his

particular

controller

referring

the

nameplate

data

the

controller

and

the

electri

cal

diagrams

supplied

with

the

controller

the

controller

for

synchronous

motor

these

instructions

should

used

with

GEH

5201

For

applica

tions

questions

refer

GET

6840

For

details

high

voltage

contactor

refer

GEH

5306

Warning

Before

any

adjustments

servicing

parts

replacement

any

other

act

performed

requiring

physical

contact

with

the

electrical

working

components

wiring

this

equipment

power

must

removed

from

all

sources

and

all

attached

rotating

equipment

must

have

come

complete

stop

User

personnel

must

completely

familiar

with

the

following

operating

and

maintenance

instructions

before

attempting

service

this

equipment

Warning

The

vacuum

interrupter

integrity

test

should

performed

before

the

high

voltage

vacuum

contactor

energized

for

the

first

time

and

each

time

the

contactor

returned

service

after

maintenance

adjustment

repair

Failure

perform

this

test

may

result

serious

injury

death

Introduction

Vacuum

Limitamp

controllers

are

designed

meet

NEMA

ICS

324

“

General

Purpose

High

voltage

Class

Controllers

”

and

347

requirements

and

may

described

metal

enclosed

high

interrupting

capacity

vacuum

contactor

type

starter

equipments

with

manual

isolation

Individual

starters

and

controllers

are

signed

for

specific

applications

;

the

components

and

functions

being

dictated

the

Purchaser

specifications

and

needs

Controllers

may

fused

unfused

Figure

inch

wide

one

high

controller

Figure

inch

wide

synchronous

controller

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

Description

Equipment

Identification

Number

Designation

Basic

type

designation

for

all

Vacuum

Limitamp

Control

equipment

194

with

significant

alpha

numeric

suffixes

used

define

rating

function

contactor

type

and

enclosure

type

194

NEMA

TYPE

NEMA

(

Unfused

)

NEMA

(

Fused

)

Starling

and

Spaed

Functions

—

Enclosure

—

Single

speed

full

voltage

—

Single

speed

reduced

voltage

reactor

type

—

Single

speed

reduced

voltage

autotransformer

type

—

Single

speed

part

winding

start

—

Single

speed

reduced

voltage

primary

resistor

—

speed

winding

full

voltage

—

speed

winding

reactor

reduced

voltage

—

speed

winding

autotransformer

reduced

voltage

—

speed

winding

full

voltage

—

speed

winding

reactor

reduced

voltage

—

speed

winding

autotransformer

reduced

voltage

System

Voltage

—

2400

Volts

—

4200

Volts

—

7200

Volts

—

Other

Controlled

Apparatus

—

Synchronous

Motor

(

brushless

type

)

—

Induction

Motor

—

Synchronous

Motor

(

ring

type

)

—

Wound

Rotor

Motor

—

Transformer

Feeder

—

Capacitor

Feeder

—

Other

Rotation

and

Braking

—

Non

reversing

non

braking

—

Reversing

non

braking

—

Non

reversing

dynamic

braking

—

Reversing

dynamic

braking

—

Reversing

plugging

general

the

unit

enclosures

are

divided

into

high

voltage

and

low

voltage

compartments

each

with

its

own

separate

door

and

with

interior

barriers

between

the

two

See

Figures

and

open

the

high

voltage

compartment

door

the

power

must

disconnected

sequence

manual

operations

which

requires

energizing

the

high

voltage

contactor

operating

the

isolating

switch

handle

and

unlatching

the

door

Low

voltage

doors

may

entered

without

disconnecting

the

power

;

however

this

should

done

with

extreme

care

and

caution

The

upper

compartment

one

high

controllers

may

contain

low

voltage

panel

hinged

the

left

side

which

acts

barrier

the

high

voltage

control

power

transformer

mounted

the

upper

rear

cover

General

The

basic

Vacuum

Limitamp

controller

front

connected

assembly

components

and

conductors

for

motor

starting

arranged

for

convenient

access

enclosure

which

allows

space

and

facilities

for

cable

termination

plus

safety

interlocking

doors

and

isolator

prevent

inadvertent

entrance

high

voltage

parts

back

access

required

This

equipment

may

rated

7.2

depending

the

contactor

and

fuse

ratings

Installation

operation

and

service

should

performed

only

experienced

personnel

trained

this

class

equipment

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

Interrupting

Ratings

Utilization

Voltage

Shown

Three

phase

Symmetrical

System

MVA

Maximum

Continuous

Amperes

(

RMS

)

Maximum

Volts

Class

Unfused

Class

Fused

2500

400

200

400

5000

400

7200

600

Basic

Impulse

Level

(

BIL

)

The

standard

BIT

rating

Vacuum

Limitamp

control

lers

crest

(

design

rating

)

This

rating

excludes

dry

type

control

transformers

and

starting

reactors

totran

sformers

Dielectric

Test

Voltage

nameplate

voltage

plus

2000

volts

High

voltage

Vacuum

Contactors

The

vacuum

contactors

used

Vacuum

Limitamp

controllers

are

available

two

different

ratings

400

and

800

amperes

This

publication

covers

only

the

400

ampere

rating

The

contactors

are

similar

operation

but

very

different

size

and

rating

For

this

reason

they

are

not

directly

interchangeable

mechanically

See

Figure

The

contactors

are

easily

removable

from

the

controller

assembly

removing

few

bolts

that

hold

the

contactor

position

and

disconnecting

the

line

and

load

power

connections

The

auxiliary

contacts

and

the

coil

termi

nals

are

connected

means

removable

connector

that

retained

two

wing

nuts

removing

these

wing

nuts

the

wiring

harness

easily

disconnected

from

the

contactor

Refer

the

information

beginning

Page

this

publication

that

details

the

correct

method

for

contactor

removal

Figure

inch

wide

400

ampere

FVNR

starter

Ratings

Refer

the

panel

data

nameplate

(

see

Figure

)

front

the

enclosure

for

detailed

ratings

applicable

particular

controller

Equipment

basic

ratings

equal

exceed

NEMA

ICS

324

for

Class

Controllers

and

are

summarized

below

Approximate

Maximum

Horsepower

Current

Voltage

Ratings

2200

2400

Volts

4000

4800

Volts

7200

Volts

Synchronous

Motors

Synchronous

Motors

Synchronous

Motors

Continuous

Current

(

RMS

)

(

Amperes

)

Induction

Motors

Induction

Motors

Induction

Motors

0.8

1.0

0.8

•

1.0

400

Max

3450

1600

3725

4800

2000

3450

4800

6000

Note

Above

ratings

apply

controllers

NEMA

vented

enclosures

ambient

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

mmm

fit

crl

Vlt

•

“

’

•

Jvi

•

PANEL

DATA

NAMEPLATE

HWIWUim

;

•

;

aae

•

“

RSKSftj

•

;

•

“

’

CfllVMIliM

msm

;

•

;

•

‘

Figure

Panel

data

nameplate

Figure

Inch

wide

400

ampere

FVNR

synchronous

starter

low

voltage

control

section

•

feft

•

Figure

The

800

and

400

ampere

vacuum

contactors

Figure

inch

wide

400

ampere

FVNR

synchronous

starter

high

voltage

section

showing

the

400

ampere

contactor

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

tent

;

Figure

Anti

single

phase

contact

block

wiring

removed

for

clarity

Figure

High

voltage

compartment

showing

fuse

assembly

‘

•

’

Figure

View

disconnect

switch

the

CLOSED

position

Barriers

are

removed

for

clarity

Figure

View

various

low

voltage

components

swing

panel

Courtesy of NationalSwitchgear.com

194

Vacuum

Limitamp

400

Ampere

Control

Vacuum

Limitamp

Control

supplied

standard

with

bolt

type

fuses

The

fuse

holders

will

accommodate

2400

volt

through

7200

volt

fuses

The

length

these

types

fuses

vary

and

the

lower

fuse

mount

can

adjusted

the

proper

length

unbolting

the

mount

from

the

back

rail

and

remounting

the

proper

location

For

7200

volt

applications

the

fuses

require

slightly

different

lower

mounting

strap

and

the

top

fuse

mounting

strap

must

changed

This

requires

that

the

disconnect

switch

disassembled

See

Figure

Manual

Disconnect

(

Isolating

Mechanism

)

Vacuum

Limitamp

controllers

following

the

NEMA

definition

provide

means

for

manually

isolating

the

power

circuit

operation

disconnecting

device

The

disconnecting

mechanism

consists

quick

make

quick

break

non

load

break

disconnect

switch

(

see

Figures

through

)

which

controlled

the

operating

handle

(

see

Figure

)

fixed

barrier

(

Figure

)

with

viewing

window

supplied

provide

isolation

from

the

energized

bus

parts

There

are

The

vacuum

contactors

supplied

with

Vacuum

Limitamp

moving

shutters

that

require

maintenance

The

quick

Control

are

magnetically

operated

coil

fed

make

quick

break

operating

mechanism

shown

integral

rectifier

and

timed

holding

circuit

base

Figure

mounted

contactor

timing

module

(

CTM

)

applies

full

voltage

the

contactor

coil

for

time

sufficient

fully

the

contactor

series

capacitor

then

switched

hold

the

contactor

closed

without

overheating

the

coil

Load

current

must

not

interrupted

the

disconnect

switch

mechanical

interlock

provided

ensure

that

the

contactor

the

open

position

before

the

operating

handle

can

actuated

Also

the

contactor

cannot

operated

while

the

operating

handle

being

moved

from

one

position

another

The

mechanical

isolator

will

four

padlocks

prevent

operation

See

Figure

Blown

Fuse

Indicator

Blown

fuse

indication

activated

trip

bar

located

the

rear

the

top

fuse

holder

The

blown

fuse

indica

tor

requires

bolt

type

fuses

When

one

the

fuses

blow

small

indicator

moves

upward

from

the

top

center

the

fuse

indicate

which

fuse

has

blown

The

right

end

the

trip

bar

has

cam

that

operates

anti

single

phase

contact

which

wired

trip

the

controller

off

line

prevent

single

phasing

the

connected

load

See

Figure

Mechanical

Interlocking

Vacuum

Limitamp

equipment

designed

the

high

voltage

contactor

performs

all

normal

load

current

interrupting

The

current

limiting

fuses

generally

interrupt

the

fault

currents

Note

The

quick

make

quick

break

manual

isolator

will

not

interrupt

any

load

fault

current

mechanical

interference

system

included

with

all

Vacuum

Limitamp

controllers

(

mechanical

interlock

)

which

prevents

opening

the

manually

operated

isolating

contacts

unless

the

high

voltage

contactor

itself

demonstrated

magnet

position

already

open

This

ensure

that

the

contactor

has

opened

the

power

circuit

and

interrupted

the

current

before

the

disconnect

switch

may

operated

See

Figure

Warning

The

manual

isolator

should

never

forcibly

operated

Its

mechanical

interference

interlock

should

defeated

only

knowledgeable

and

qualified

electrical

mainte

nance

personnel

who

have

energized

all

poioer

feeding

the

controller

gpB

fcVlrB

‘

•

)

•

iiW

[

„

•

sis

iif

;

’

)

•

Figure

View

the

disconnect

switch

the

OPEN

position

Barriers

are

removed

for

clarity

Courtesy of NationalSwitchgear.com

194

Vacuum

Umitamp

400

Ampere

Control

•

‘

;

•

teil

•

;

•

Figure

Disconnect

switch

shown

with

barrier

place

Switch

shown

CLOSED

position

Figure

View

quick

make

quick

break

operator

sfVV

•

‘

WiV

;

•

;

resi

POWER

’

INTERLOCKS

”

;

•

;

(

189

•

JLfi

•

iMc

’

•

‘

Wmmm

•

;

•

••

•

;

•

;

(

•

••

•

{

•

fif

Figure

The

operating

handle

for

the

disconnect

may

padlocked

prevent

operation

Figure

View

handle

assembly

area

showing

test

power

interlocks

Courtesy of NationalSwitchgear.com

194

Vacuum

Umitamp

400

Ampere

Control

Warning

There

emergency

condition

that

can

justify

forc

ible

operation

the

manual

isolator

with

the

main

contactor

closed

The

isolator

must

operated

only

with

the

contactor

open

All

high

voltage

doors

are

interlocked

mechanical

interference

mechanism

that

lock

high

voltage

doors

closed

until

the

disconnect

switch

the

OPEN

position

This

done

prevent

exposure

high

voltage

one

high

controllers

the

bottom

door

covers

the

high

voltage

compartment

Other

high

voltage

doors

may

full

height

cover

high

voltage

parts

located

auxiliary

sections

These

devices

may

include

reactors

auto

trans

formers

control

power

transformers

etc

Key

interlocking

frequently

used

lieu

mechanical

interference

mechanisms

lock

high

voltage

doors

closed

until

power

inside

has

been

removed

Non

loadbreak

switches

are

also

key

interlocked

prevent

operation

under

load

all

cases

key

interlocking

important

the

operating

sequence

scribed

the

drawings

furnished

with

the

equipment

some

one

high

enclosure

designs

low

voltage

control

panel

mounted

hinges

the

left

side

the

enclosure

serves

barrier

isolate

the

high

voltage

control

power

transformer

and

fuses

interference

latch

shown

Figure

prevents

swinging

this

panel

out

until

the

high

voltage

door

opened

thus

ensuring

that

high

voltage

power

the

Control

Power

Trans

former

disconnected

•

••

•

;

•

;

•

‘

;

•

;

Figure

Contactor

engagement

pawl

for

mechanical

interlock

Auxiliary

Enclosures

Many

sizes

enclosures

are

furnished

Vacuum

Limitamp

control

lineups

for

various

purposes

Some

are

tabulated

below

;

Wound

rotor

secondary

contactor

and

resistor

compartments

Bus

transitions

switchgear

Bus

transitions

transformers

Cable

entrance

compartments

Rectifier

exciter

compartments

Starting

reactor

autotransformer

compartments

Relay

and

metering

compartments

Instrument

transformer

compartments

Manual

switch

compartments

Refer

Figure

for

details

Dimensions

Vacuum

Limitamp

controllers

are

normally

inches

deep

and

inches

high

Width

varies

for

one

high

controllers

induction

motors

synchronous

motors

other

special

applications

cable

space

requirements

Refer

Figure

for

typical

outline

dimensions

Figure

Blown

fuse

Indicator

shown

the

NORMAL

position

Courtesy of NationalSwitchgear.com

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