GE IAV53E Manuale utente

JNSTR

UCTJONS

VOLTAGE

RELAY

TYPE

IAV53E

I-28824B

INSERT

BOOKLET

GEH-1814

The

Type-IAV53E

relay

has

one

open

and

one

closed

contact,

and

similar

the

Type-1AV53

relay

described

the

included

instructions,

GEH-1814,

except the

operating

coil

has

taps

and

the

seal-in

units

are

omitted.

The

relay

adjusted

its

left

contacts

volts

and

its

right

contacts

volts.

With

this

caHbration,

the

relay

coses

its

right

contacts

seconds

when

the

voltage

suddenly reduced

zero

(0).

typical

time—voltage

curve

shown

Figure

The

internal

connections

are

shown

Figure

BURDEN

VOLTS

AMPERES

WATTS

115

0.144

4.5

-J

•

OPERATING

COIL

#..

ø.O.

Figure

(K-6400143[21)

Internal-Connection

Diagram

These

instructions

not

purport

cover

all

details

variations

equipment nor

provide

for

every

possihie

contingency

met

connection

with

installation,

operation

maintenance.

Should

further

information

desired

should

particular

problems

arise

that are

not

covered

sufficiently

for

the

purchaser’s

purposes,

the

matter

should

referred

the

General

Electric

Company.

the

extent

required

the

products described

herein

meet

applicable ANSI,

IEEE

and

NEMA

standards:

hut

such

assurance

given

with

respect

local

codes

and

ordinances

because

they

vary

greatly

GEI-28824

I.—

—

I’

-i:

‘..T;it.:

it&

Wfl

QO$TACZ2

—

———i——

—

——

—

—————

Figure

(K—6315689)

Typical

Time-Voltage

Curves

for

Type-IAV53L

Relays

(±

10%)

(10/90)

(200)

GENERAL

ELECTRIC

METER

AND

CONTROL

BUSINESS

DEPT..,

MALVERN,

19355

GEH-

1814J

IAV51A

IAV52A

IAV53A

IAV53C

1AV530

IAV53K

IAV53L

IAV53M

IAV53N

JNSTR

(ICTIONS

VOLTAGE

RELAYS

TYPES

GENERAL

ELECTRIC

GEH-1814

TABLE

CONTENTS

PAGE

DESCRIPTION

APPLICATION

RATINGSANDBURDENS

CHARACTERISTICS

CONSTRUCTION

RECEIVING,

HANDLING

AND

STORAGE

RECEIVING

HANDLING

STORAGE

ACCEPTANCE

TESTS

VISUAL

INSPECTION

MECHANICAL

INSPECTION

ELECTRICAL TESTS

Drawout

Relays,

General

PowerRequirements,General

Pickup

VoltageTest

Time-Voltage

Test

INSTALLATION

INSPECTION

LOCATION

MOUNTING

CONNECTIONS

GROUND

CONNECTIONS

FIELD

INSTALLATION

TESTS

PERIODIC

CHECKS

AND

ROUTINE

MAINTENANCE

DISKANDBEARINGS

CONTACTCLEANING

SERVICINGANDADJUSTMENTS

TARGETANDSEAL-lN

UNIT

VOLTAGE

SETTING

TIME

SETTING

BEARINGANDCONTACTS

RENEWAL

PARTS

LISTOFFIGURES

GEH-t

814

VOLTAGE

RELAYS

TYPES

IAV51A

IAV52A

IAV

53A,

53B,

53C, 53D,

53K,

531,

53M,

and

53N

DESCRIPTION

Type

IAV

relays

are

single-phase,

voltage-operated,

induction-disk

relays

with

adjustable

time

delay.

The

IAVS1A

and

IAV52A

are

overvoltage

relays.

The

IAV53A,

and

are

over-

and

undervoltage

relays.

APPLICATION

These

IAV

relays

are

used

for

protection

against

alternating-current

(AC)

overvoltage,

for

permissive

control

and

tripping

automatic

equipment,

and for

ground

detection

equipment

and

feeders.

Figure

shows

the

typical

connections

for

the

application

IAVS1A

relay

for

protection against

overvoltage

three-phase

system.

The

IAV52A

can

used

for

applications

requiring

two

trip-output

circuits.

The

operating-time

characteristics

for

these

relays

are

shown

Figure

12.

Figure

shows

the

connection

diagram

for

1AV53

over-

and

undervoltage

relays.

The

IAV53A

has

separate

normally-open and

normally-closed

contacts with

seal-in

units

each

contact.

typical

application

for

permissive

control

and

tripping

automatic

equipment

would

utilize

the

normally-open

contact

enable

the

machine

breaker-closing

circuit

when

normal

machine

voltage

present,

and

the

normally-closed

contact

operate

the

machine

breaker-trip

circuit

for

undervoltage

conditions.

The

operating-time

characteristic

for

the

IAV53A,

IAV53B,

IAVS3K

and

IAVS3L

relays

are

shown

Figure

13.

The

IAV53D

and

IAV53N

time

characteristics

are

shown

Figure

14.

The

IAV53C

designed

for

ground-fault

protection,

and

would

normally

applied

with

phase-to-neutral

connection,

giving

58%

rated voltage.

The

relay

adjusted

have

10-second

operating

time

for

either

ground

the

connected

phase

volt

operates

the

contact),

ground

another

phase (rated

volts

operates

the

coil).

These

instructions

not

purport

cover

alt details

variations

equipment

nor

provide for

every

possible

contingency

met

connection

with

installation,

operation

maintenance.

Should

further

information

desired

should

particular

problems

arise

which

are

not

covered

sufficiently

for

the

purchaser’s

purposes,

the

matter

should

referred

the

General Electric

Company.

the

extent

required

the

products

described

herein

meet

applicable

ANSI,

IEEE

and

NEMA

standards;

but

such

assurance

given

with

respect

local

codes

and

ordinances

because

they

vary

greatly.

H-I

814

RATINGS

AND

BURDENS

The

operating-circuit

ratings

avaIabIe

are shown

Table

The

operating

coil

will

stand

rated

voltage

continuously

any

tap,

and

will

stand

tap

voltage continuously

the

taps

above

rated

voltage.

TABLE

VOLTAGE

RATINGS

RELAY

60Hz 50Hz

IAV51A 115

115

208

230

460

IAV52A 115

115

199

230

460

IAV5A

115

IAV53K

230

460

IAV53B

115 115

IAV53L

230 230

460

IAVS3C

115 115

IAVS3M

199

IAV53D

115

IAV53N

240

The

current-closing rating

the

contacts

amperes

for

voltages

not

exceeding

250

volts.

The

current-carrying

ratings

all

but

the

IAV53C

and

IAV53M

are

affected

the

selection

the

tap

the

seal-in

coil

indicated

Table

II.

TABLE

TAP

FUNCTION

2.0

0.6

2.0

Resistance

10%

8.3

0.24

0.78 0.18

Minimum

Operating

“I”

0.2 2.0

0.6 2.0

Carry

“I”

Continuously (amperes)

0.37

2.3

1.2

2.6

Carry3oampsfor

(seconds)

0.05

2.2

0.5

3.5

Carry

lOampsfor

(seconds)

0.45

5.0

‘1”

(ohms)

0.65

6.2

0.65

‘7”

(ohms)

0.54

5.1

0.54

GEH-1814

The

tap

setting

used

the

seal-in

element

determined

the

current

drawn

the

trip

coil.

The

0.2

ampere

tap

for

use

with

trip

coils

that

operate

currents

ranging

from

0.2

2.0

amperes at

the

minimum

control

voltage.

this

tap

used

with

trip

coils

requiring

than

two

(2.0)

amperes,

there

possibility

that

the

eight

ohm

(8Q)

resistance

will

reduce

the

current

low

value

that

the

breaker

will

tripped.

The

two-ampere

amp)

tap

should

used

with

trip

coils

that

take

two amperes

minimum

control

voltage,

provided

the

tripping

current

does

not

exceed

amperes

the

maximum

control

voltage.

the

tripping

current

exceeds

amperes,

auxiliary

relay

should

be used,

the

connections

being

such

that

the

tripping

current

does

not

pass

through

the

contacts

the

target/seal-in

coil

the

protective

relay.

The

above

data

regard

contact

rating

apply

all

relays

covered

these

instructions

except

the

Types

IAV53B

and

IAV53D,

which

not

have seal-in

units.

these

cases,

the

contact

ratings

are

limited

their

current-carrying

capacity

the

interrupting

ratings

shown below:

FUNCTION

VOLTS

AMPERES

Makeand

125

1.5

0.3t

interrupt

250

0.75

0.1Sf

600

0.00

Noninductive

Load

Representative

burdens

for

the

various

relay

types

are

given

Table

Ill.

TABLE

III

RELAY

VOLTAGE

TAPtf

VOLT-

POWER

TYPES

RATING

SETTING

AMPS

FACTOR

WATTS

CYCLE

BURDENS

115

140

1.3

0.34

0.4

120

1.8

0.35

0.5

IAV51A

105

2.4

0.34

0.7

3.1

0.33

0.9

IAV52A

3.9

0.32

1.2

70 5.4

0.31

1.7

6.6

0.31

2.1

9.2

0.35

3.2

IAV53A, 115 140

2.2

0.32 0.7

IAV53B,

120

3.0

0.30 0.9

IAV53D

105

4.0

0.31

1.2

IAV53K

93 5.4

0.31

1.7

IAV53L

82 7.0

0.32

2.2

70 9.9

0.34

3.4

IAV53N

12.0

0.36

4.3

17.0

0.39

6.6

IAV53C

53M

115

TAPS

5.7

0.29

1.7

Minimum

pickup

volts

GEH-1

814

TABLE

III

(continued)

RELAY

VOLTAGE

TAPtt

VOLT-

POWER

TYPES

RATING

SETTING

AMPS

FACTOR

WATTS

50-

CYCLE

BURDENS

IAV51A

115

140

0.34

0.4

120

1.6

0.34

0.5

IAVS2A

105

2.1

0.34

0.7

2.8

0.38

1.9

0.36

1.3

5.1

0.34

1.7

6.2

0.34

2.1

8.2

0.34

2.9

IAV53A,

115

140

1.9

0.32

0.6

1AV538,

120

2.5

0.30 0.8

)AV53D 105

3.4

0.29

1.0

IAVS3K

4.6

0.31

1.4

IAVS3L

6.0

0.32

1.9

8.4 0.35

2.9

IAVS3N

12.9

0.29

3.7

13.2

0.35

4.6

IAV53C&53M

115

NOTAPS

4.8 0.32

1.6

Minimum

pickup

volts

CHARACTERISTICS

The

Type-IAV51A

overvoltage

relay

with single-circuit

closing

contacts

that

when

the

voltage

increases

pickup value,

set

the

tap

block.

The

time

delay

closing

the

contacts

determined

the

setting

the

time

dial

the

top

the

shaft.

The

time/voltage

characteristics

this

relay

are

shown

Figure

12.

The

IAV52A

relay

similar

every

respect

the

IAV51A

relay,

except

that

has

additional

contacts

for

closing

second

circuit.

The

time/voltage

characteristics

are

shown

Figure

12.

The

IAV53A

relay

under-

and

overvoltage

relay

with

double-throw

contacts.

The

left-

hand contacts

the

voltage

increases

some

predetermined

value.

The

right-hand

contacts

when

the

voltage decreases

some

lower

value.

Between

these

two

voltage

values,

both

contacts

are

open.

Time/voltage characteristics

are shown

Figure

13.

The

Type

IAV53B

relay

differs

from

the

Type

IAV53A

relay

that

does

not

have

seal-in

elements.

Time/voltage

characteristics

are

shown

Figure

The

Type

IAV53C

and

IAV53M

relays

are

similar

the

Type

IAV53A

relay

except

that

there

are

taps

the

coil.

The

relay

adjusted

its

right

contacts

seconds

when

the

voltage

reduced

from

58%

rated

voltage

zero

(0)

voltage;

with

this

calibration

the

relay

closes

its

left

contacts

approximately

seconds

when

the

voltage

increased

from

58%

rated

voltage

rated

voltage.

These

relays

are

used

connected

line-to-ground

that

under

normal

conditions

the

relay

receives

58%

rated

phase-to-phase voltage,

and

both

relay

contacts

are

open.

the

phase

which

the

relay

connected

grounded,

the

relay

voltage

goes

zero

(0)

and

the

right-hand

contacts

seconds.

either

GEH-1814

the

other

two

phases

are

grounded,

the

relay

voltage

increases

rated voltage

and

the

left-hand

contacts

approximately

seconds.

The

IAV53D

relay

similar

to the

Type

1AV538

relay

except

that

has

shorter

time

curve.

Time/voltage

characteristics are shown

Figure

14.

The Type

IAV53K

similar

the

Type

IAVS3A,

IAV53L

IAVS3B,

IAV53M

IAVS3C

and

IAV53N

IAV53D.

While

the

IAV53A,B,C,

are

single-end

cases,

the

IAV53K,

and

relays

are

the

double-end

case,

with

contacts

connected

between

the

upper

and

lower

blocks

and

operating

coils

connected

both

blocks.

The

purpose

this

avoid

false

tripping

the

breaker

the

connecting

plugs

are

removed

and

subsequently

reinserted

with

the

relay

the

reset

position,

i.e.,

circuit-opening

contacts

closed.

Insertion

either

plug

causes

the

relay

pick

up;

both

plugs

must

place

before

the

contact

circuits

are

completed.

See

internal connections

Figures

for

coil

and

contact

circuits,

and

Figures

and

for

external

connections.

CONSTRUCTION

These

relays

are

the

induction-disk

construction.

The

disk

actuated

potential

operating

coil

laminated

U-magnet.

The

disk

shaft

carries

the

moving

contact,

which

completes

the

trip

or alarm

circuit

when

touches

the

stationary

contact

contacts.

The

disk

shaft

restrained

spiral

spring

give

the

proper

contact-closing

voltage,

and

its

motion

retarded

permanent

magnets

acting

the

disk

give

the

correct time

delay.

There

seal-in

unit

mounted

the

left

the

shaft

all

but

the

IAV53B,

and

models,

shown

Figure

15.

This

unit

has

its

coil

series

and

its

contacts

parallel

with

the

main

contacts,

such

that

when

the

main

contacts

close,

the

seal-in

unit

picks

and

seals

in.

When

the

seal-in

unit

picks

up,

raises

target

into

view,

which

latches

and

remains

exposed

until

released

pressing

button

beneath

the

lower-left

corner

the

cover.

The

case

suitable

for

either

surface

or semi-flush

panel

mounting

and

assortment

hardware

provided

for

either

mounting.

The

cover

attaches

the

case,

and

carries

the

reset

mechanism

when one

required.

Two

the

cover screws

have

provision

for

sealing

wire.

The

case has

studs or

screw

connections

both

ends

(IAVS3K,

the

bottom

only

(IAV51

and

52A,

and

IAV53A,

and

for

the

external

connections.

The

electrical

connections

between

the

relay

units

and

the

case

studs

are made

through

spring-backed

contact

fingers

mounted

stationary

molded

inner

and

outer

blocks,

between

which

nests

removable

connecting

plug

(two plugs

for

the

IAV53K,

and

models)

that

completes

the

circuits.

The

outer

blocks,

attached

the

case,

have

the

studs

for

the

external

connections,

and

the

inner

blocks

have

the

terminals

for

the

internal

connections.

The relay

mechanism

mounted

steel

framework

called

the

cradle

and

complete

unit,

with

all

leads

being

terminated

the

inner

block.

This

cradle

held

firmly

the

case

latch

the

top

and

bottom

and

guide

the

back

the

case.

The cases

and

cradles

are

constructed

that

the

relay

cannot

inserted

the

case

upside

down.

The

connecting

plug,

besides

making

the

electrical

connections

between

the

respective

blocks

the

cradle

and

case,

also

locks

the

latch

place.

The

cover,

which

fastened

the

case

thumbscrews,

holds

the

connecting

plug

place.

draw

out

the

cradle

from

single-ended

case,

the

cover

must

first

removed.

Then

the

connecting

plug

can

drawn

out.

doing,

the

trip

circuit

first

opened,

then

the

GEH-1

814

voltage

circuits

are

opened.

After

the

connecting

plug

has

been

removed,

the

lower

latch

can

released

and

the

cradle

easily

drawn out.

replace

the

cradle,

the

reverse

order

should

followed.

The

cradle

can

drawn

out

from

double-ended

case

the

same

way,

except

that

two

connecting

plugs

must

drawn

out

first.

RECEIVING,

HANDLING

AND STORAGE

RECEIVING

These

relays,

when

not

shipped

part

control

panel,

will

shipped

cartons

designed

protect

them

against

damage.

Immediately

upon receipt

the

relay,

examination

should

made

for

any

damage

sustained during shipment.

injury

rough

handling

evident,

damage

claim

should

filed

once

with

the

transportation

company,

and

the

nearest

General

Electric

Sales

Office

should

notified

promptly.

HANDLING

Reasonable

care

should

be exercised

unpacking

the

relay

order

that

none

the

parts

are

damaged

nor

the

adjustments disturbed.

STORAGE

the

relays

are

not

installed

immediately,

they

should

stored

their

original

cartons

place

that

free

from

moisture,

dust, and

metallic

chips.

ACCEPTANCE TESTS

Immediately

upon

receipt

the

relay

INSPECTION

and

ACCEPTANCE

TEST

should

made to

make

sure

that

damage

has

been

sustained

shipment

and

that

the

relay

calibrations

have

not

been

disturbed.

pickup

value

for

the

left

contact

specified

the

requisition

for

the

relays

with

tap

blocks,

the

relay

shipped

with

the tap

plug

the

fifth

tap.

pickup

specified,

the

tap

plug

set

the

tap

corresponding

this

value.

specified

value

does

not

coincide

with

one

the

taps,

the

tap

plug

put

the

tap

nearest

the

required

value

(the lower

tap

used

the

value

half

way

between

two

taps)

and

the

spring

adjusted

obtain

the

required

pickup.

VISUAL

INSPECTION

Check

the

nameplate

stamping

the

make

sure

that

the

model

number

and rating

the

relay

agree

with

the

requisition.

CAUTION

Every

circuit

the drawout

case

has

auxiliary

brush.

especially

important

current

circuits,

and

other

circuits

with

shorting

bars,

that

the

auxiliary

brush

bent

high

enough

engage

the

connecting

plug or

test

plug

before

the

main

brushes

do.

This

will

prevent

secondary

circuits

from

being

open.

Indice

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