GE IFC53M User manual

INSTRUCTIONS

TIME

OVERCURRENT

RELAY

TYPE

IFC53M

GEK-65572

Supplement

GEK-45375

GENERAL

‘1’

ELECTRIC

GEK-65572

TIME

OVERCURRENT

RELAY

TYPE

IFCS3M

NTRODUCT

ION

These

instructions

are

supplement

instruction

book

GEK-45375.

The

combination

the

two

books

form

instructions

for

the

Type

IFC53M

relay.

These

relays

provide

for

target

seal-in

unit

for

both

the

time

overcurrent

element

and

the

instan

taneous

overcurrent

unit.

The

Type

IEC53M

relay

similar

the

Type

IFC53A

with

the

addition

right—hand

target

and

seal-in

unit

and

high

dropout

instantaneous

unit

mounted

the

rear

the

relay

unit.

The

special

high

dropout

instantaneous

unit

constructed

without

target

and

designed

yield

dropout

values

percent,

higher,

pickup

current.

The

pole

piece

constructed

and

secured

with

special

wave

washer

that

can

rotated

the

most

favorable

position.

The

unit

may

calibrated

the

standard

manner

once

the

pole

piece

has been

adjusted

for

percent

dropout

higher.

HI-SEISMIC

HIGH

DROPOUT

INSTANTANEOUS

UNIT

The

high

dropout

instantaneous

unit

contacts

will

amperes

voltages

less

than

250

volts.

The

coil

ratings available

are

shown

Table

The

high

dropout

instantaneous

unit

tapped

for

operation

either

two

ranges

L).

Selec

tion

the

high

low

range

accomplished

means

range

selection

link

located

the

top

the

support

structure.

TABLE

Tap

Continuous

**One

Second

Unit

Position

*Range

Rating Rating

(Pjnps)

(mps)

2-4

1.9

2-8

4900

4-8

3.0

4-8

4.3

4-16

140

19600

8-16

6.9

10-20

9.0

10-40

275

75500

20-40

16.2

20-40

12.6

20-80

275

75500

40-80

20.0

*The

range

approximate

which

means

that

the

2—4,

4-C

may

2-5,

4-8.

There

will

always

least

one

drnpere

overlap

between

the

maximum

setting

and

the

minimum

setting.

Whenever

possible

select

the

higher

range, since

has

the

higher

continuous

rating.

Make

sure

that

the

range

selection

link

the

correct

position

for

the

range

which

operate.

These

2nstructloflq

not

purport

cover

all

details

variations

equipment

nor

provide

for

ever;

possible

contingency

met

connection

with

installation,

operation

maintenance.

Should

farther

information

desired

should

particular

problems

arise

which

are

not

covered

sufficiently

for

the

ourchaser’s

purposes,

the

matter

should

referred

the

General

Electric

Company.

the

extent

requirod

the

products described

herein

meet

applicable

SI,

IEEE

and

NEiL21

standards;

but

such

assurance

given

with

respect

local

codes

and

ordinances

because

they

vary

greatly.

GEK—55572

**Higher

currents

may

applied

for

shorter

lengths

time

accordance

with

the

formula:

The

high

dropout

unit

coil

series

with

the

time

overcurrent

unit

coil,

see

Table

and

GEK

45375

determine

the

current

limiting

element

for

both

continuous

and

short

time

ratings.

The

high

dropout

instantaneous

unit

similar

the

standard

instantaneous

unit

except

has

target,

and

dropout

current

approximately

percent

of the

pickup

current.

Fig.

picture

the

high

dropout

unit.

The

adjustable

core

(A)

sets

the

pickup

level.

Turning

the

core

down

(clockwise,

top

view)

lowers

the

pickup,

while

turning

the

core

(counterclockwise,

top

view)

increases

the

pickup.

Before

attempt

ing

turn

the

core,

the

locknut

(B)

must

loosened.

After

adjusting

the

core,

the locknut

must

retightened.

When

loosening

tightening

the

locknut,

the

sleeve

(C)

which

the

shading

ring

(D)

attached

must

held to

preveit

from

turning.

Rotation

the

shading

ring

sets

the

dropout

level

and

thereby

determines

the

quietness

operation

the

picked

position.

The

core

has

been

factory

set

obtain

percent

dropout

the

minimum

setting

and

approximately

percent

dropout

the

maximum set—

tlng.

Should

necessary

change

the

dropout

setting,

the

sleeve

(C)

which

the

shading

ring

CD)

attached

must

always

turned

the

clockwise

direction

(top

view).

This

will

prevent

the

sleeve

and

shading

ring

assembly

from

being

loosened.

The

unit

will

pick

the

scale-plate

marking

plus

minus

five

percent

with

gradually

applied

current.

The

operating

time

shown

Fig.

shows

transient

overreach

characteristics.

The

Hi-Seismic

high

dropout

instantaneous

unit

burdens

are

listed

Table

TABLE

Hi—Seismic

High

Dropout

Movable

Mm.

Burdens

Mm.

Burdens

Ohms

(Z)

Lead

Pickup

Pickup_(Ohms)

Times_Pickup

Inst.

Unit

Position

Amps

(Amps)

2-4

0.77

0.66

1.02

0.66

0.52 0.52

2-8

4-8

0.26 0.16

0.30

0.23 0.22

0.22

2-4

0.68

0.56

0.88

0.60

0.48 0.44

2-8

4—8

0.24 0.13 0.27

0.22

0.19

4-8

0.22

0.18

0.29 0.18 0.14 0.13

4-16

8-16

0.079

0.030 0.084

0.061

0.056

4-8

0.19

0.14

0.024

0.16

0.13

0.12

4-16

8-16

0.069

0.030

0.075

0.056

0.054

0.052

10-20

0.045

0.027

0.053

0.037

0.032 0.029

10-40

20-40

0.020 0.007

0.021

0.018

0.017

10-20

0.039

0.024

0.046 0.032

0.028

0.025

10—40

20-40

0.017 0.006

0.018

0.015

0.014 0.014

20-40

0.025

0.008

0.027

0.022 0.022

0.021

20-80

40-80

0.018

0.001

O.OU

0.014 0.014

0.013

20-40

0.021

0.007

0.022

0.018 0.018

0.017

20-80

[50

40-80

0.015

0.001

O.0l0.O12

0.012

0.011

INSTALLATION

The

outline

and

panel

drilling

diagram

shown

instruction

book

GEK-45375.

The

internal

connec

tion

diagram

shown

Fig.

this

supplement.

GEK-b5512

TIME

DIAL

SEAL-

TARGET

FOR

TIME

OVERCURRENT

UNIT

AROFT

TAP

SE[.LCT

Fig.

(8043607)

TAP

SELECTION

BLOCK

INSTANTANEOUS

UNIT

RANGE

SELECTION

LINK

SEAL-IN TARGET

FOR

INSTANTANEOUS

OVERCURRENT

UNIT

SEAL-IN TARGET

TAP

SELECTOR

SCREW

Type

IFC53M

Relay,

Renoved

fro

Cise.

Front

‘[lew

INS

IANTANEOUS

HIGH

DROPOUT

UNIT

WITH

ADJUSTABLL CORE

-M

ASSEMBL’

FOR

TIME

OVERCURREN

UNIT

Fig.

(8O436O8

Type

IFC53M

Relay,

Removed

from

Case,

Rear

View

ADiUSABLE

CORE

(A)

LOCKNUT(B)

)tL

E’

—

..‘--

—SHADING

RiNG(D

8O3b363

Construction

the high

Dropout

Instantaneous

Linit

K-6

557?

030

0.025

o.c20

0.015

0010

005

MULTIPLES

PICK—UP

OPERATING TIME

RANGE

FOR

ANY

—

PICKUP

SETTING

F-€UbR7-5)

O;erting

Vrsus

Current

for

the

Hich

Dropout

Instantaneous

(int

--I

.-t

•

1.-f

______

TRANSIENT

0VEN.REACH

HNC

REAY

‘TTT

Ti:ii

TiI

Lfljff.-}

_u:.

HtL

TTiJTf

.f1t_H

fmHtT.1-.I-n

-fL:

—

PCENT

EAC}1

100

PICKUP

CURR2T

GRADUALI.Y

APPI

TED.

CURRENT

SUDDENLY

APPLIED.

H-

-f

t--

f:t

-H-4-1

i4E:.

.-.--

-I--.

JiiT

T_i

t—+

-1-’

1—

.H-ll-

.ZE

-3

-5

-3

‘

-h

llII

•i

-4.

-4

4-z

,4.

f.1..’

441+-

tt-f-l

-H-f-i-!

-*H

-‘4--

—

-r-t-t

H-

‘4-.

—

1--

Tfl1f

4H-

I-

;4.-44

..4-_.4._._•,

•—;--

-if-.

±±

f-Vt

-f-

.-4

3..

:tf

-tY

—

t•!-f..

-h-H*

-1--ftt

‘-4

-4

jiL:j

1::

TEETTr

L1i

h-t-t-r-t-I--t-t

•

-I

CALm.

ll:Fit:

—ti

(Ir

--f-f’

tfI!II,H.f4-:b

‘-I,

i*t-i.

--H-f

i-H-u

MAX.

CALTh.—

-H

4..

•,

•

H-f+

----4----I---1--4---

-1-_-1_

-,-j--i-,-

4-.

I—+-,--j-H-—-

-tfl-

—s--’

-‘-$A

-±tt------f

t__+

—4-,

-I-I-’

-[f-i

r:lo

+11-

fZZl44

1-4

1--1-+

.1_I

;4...

-f

oH-

‘

LI4

—I-

:1W:

I--’

—

:1±1

tttfii

140

±LLtLHffFJJ

5-i

I’

4-1-

ItT

---H

‘:•

j-4NGLE

DrREES

LAG.

I1fI

I I

1fIiTTtTTTi

±Vt-

‘-f-rj--I--

—

tIT

t---

-—:-

1—

‘i:i

-I

---44.--,-.-

—

‘_11j,4

ztt

rEdil

:$1tfl

fl4$:

ill

11111

111111:11,

GEK-65572

LNSTANTANEOUS

DROPOUT

SHORT

FINGER

Fig.

(o275A4554-a)

Internal

Connection

Diagram

for

Type

IFC53M

Relays

INDUCT

ION

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