ABB SGR-51 Manuale utente

Instruction

Leaflet

41

-

668.1

E

Jill

II

MINI

ABB

Power

T

&

D

Company

Inc

.

Relay

Divisions

Coral

Springs

,

FL

33065

Type

SGR

-

51

Reclosing

Relay

Effective

:

February

1985

Supersedes

l

.

L

41

-

668.1

D

,

Dated

November

1975

©

Denotes

Changed

Since

Close

Reloy

Circuit

APPLICATION

The

close

relay

circuit

consists

of

transistors

Q

7

,

Q

8

,

and

Q

9

,

resistors

R

24

to

R

30

,

and

the

close

relay

.

The

turn

-

off

of

transistor

Q

7

by

the

flip

-

flop

circuit

switches

transistors

Q

8

and

Q

9

to

the

on

state

to

activate

the

close

relay

.

The

SGR

-

51

Reclosing

Relay

provides

for

in

-

stantaneous

reclosure

of

an

electrically

-

operated

cir

-

cuit

breaker

,

and

automatically

resets

itself

if

the

breaker

^

remains

closed

for

a

predetermined

adjust

-

able

time

interval

.

If

the

breaker

retrips

before

the

end

of

this

interval

,

the

resetting

operation

of

the

relay

is

interrupted

until

the

breaker

is

manually

closed

.

Thus

,

the

reclosing

relay

is

applicable

to

either

attended

or

non

-

attended

stations

.

Flip

-

Flop

Set

Circuit

The

flip

-

flop

set

circuit

consists

of

transistors

Q

1

and

Q

6

,

resistors

R

22

and

R

23

,

and

capacitor

C

5

.

The

flip

-

flop

is

set

when

the

breaker

closes

and

opens

the

52

b

contact

,

switching

transistors

Q

1

and

Q

6

to

the

on

state

.

Capacitor

C

5

then

discharges

through

Q

6

to

turn

transistor

Q

5

off

,

setting

the

flip

-

flop

.

CONSTRUCTION

AND

OPERATION

The

SGR

-

51

is

a

solid

state

relay

consisting

of

(

1

)

a

timing

circuit

,

(

2

)

a

flip

-

flop

control

circuit

,

(

3

)

a

close

relay

circuit

,

(

4

)

a

flip

-

flop

set

circuit

,

and

(

5

)

lockout

indication

.

All

components

except

the

dropping

resistor

,

lockout

indicator

and

the

close

relay

are

mounted

on

printed

circuit

boards

.

All

components

are

identified

on

the

internal

schematic

in

Figure

3

.

o

Lockout

Indicator

Circuit

The

lockout

indicator

circuit

is

controlled

by

the

state

of

the

flip

-

flop

control

circuit

.

Consisting

of

amplifier

transistors

Q

10

and

Qll

,

the

amber

light

is

lit

when

the

flip

-

flop

is

in

the

set

state

,

and

the

relay

is

locked

out

if

the

breaker

is

open

at

this

time

.

Timing

Circuit

The

timing

circuit

is

a

uni

-

junction

relaxation

oscil

-

lator

consisting

of

uni

-

junction

transistor

Q

3

,

resistors

RIO

and

R

37

,

and

capacitor

C

2

.

After

a

preset

time

interval

controlled

by

the

adjustable

time

dial

potentiom

-

eter

R

37

,

the

relaxation

oscillator

fires

and

feeds

an

out

-

put

pulse

to

the

flip

-

flop

control

circuit

.

Theory

of

Operation

The

following

description

is

made

with

reference

to

Figure

3

.

Let

us

assume

that

the

breaker

is

open

and

nor

-

mal

voltage

is

applied

to

the

relay

.

Under

these

conditions

,

transistors

Q

2

,

Q

4

,

Q

7

and

Qll

are

on

,

and

transistor

Q

5

is

off

.

When

the

breaker

is

closed

,

the

52

b

contact

opens

and

removes

the

shorting

of

the

base

drive

to

transistor

Ql

,

turning

it

on

.

The

turn

of

Ql

shorts

the

base

drive

to

Q

2

,

turning

it

off

,

causing

diode

D

3

to

be

reverse

biased

.

This

removes

Flip

-

Flop

Control

Circuit

The

flip

-

flop

control

circuit

consists

of

tran

-

sistors

Q

4

and

Q

5

,

and

resistors

R

12

to

R

21

.

The

flip

-

flop

control

circuit

resets

when

pulsed

by

the

timing

circuit

and

thereby

activates

the

close

relay

circuit

by

turning

transistor

Q

7

off

.

All

possible

contingencies

which

may

arise

during

installation

,

operation

or

maintenance

,

and

all

details

and

variations

of

this

equipment

do

not

purport

to

be

covered

by

these

instructions

.

If

further

information

is

desired

by

purchaser

regarding

this

particular

installation

,

operation

or

maintenance

of

this

equipment

,

the

local

ABB

Power

T

&

D

Company

Inc

.

representative

should

be

contacted

.

Printed

in

U

.

S

A

.

Courtesy of NationalSwitchgear.com

I

.

L

.

41

-

668

.

IE

Fig

.

1

.

Type

SGR

-

51

Reclosing

Relay

(

Front

View

)

Fig

.

2

.

Type

SGR

-

51

Reclosing

Relay

(

Rear

View

)

2

Courtesy of NationalSwitchgear.com

I

.

L

.

41

-

668.1

E

ward

bias

diode

D

3

.

This

short

circuits

capacitor

C

2

through

Q

2

and

removes

the

charge

that

had

started

to

build

up

.

Since

the

charge

on

C

2

had

not

reached

a

level

to

fire

Q

3

,

the

control

flip

-

flop

has

not

changed

state

,

the

reclosing

circuit

remains

off

,

and

the

lockout

indicator

remains

on

.

The

breaker

will

remain

locked

out

until

manually

closed

.

the

short

-

circuit

from

capacitor

C

2

allowing

it

to

charge

through

RIO

and

potentiometer

R

37

to

the

firing

voltage

of

unijunction

transistor

Q

3

.

The

time

required

for

C

2

to

charge

and

fire

Q

3

is

controlled

by

potentiometer

R

37

set

to

a

calibrated

time

dial

.

When

Q

3

fires

,

C

2

discharges

through

Q

3

and

R

12

to

cause

a

voltage

rise

across

R

12

.

This

causes

the

voltage

on

the

emitter

of

Q

4

to

rise

above

its

base

voltage

turning

it

off

and

flip

-

flop

transistor

Q

5

on

.

When

Q

5

turns

on

,

its

collector

voltage

drops

to

a

low

level

and

removes

the

base

drive

to

Q

7

turning

it

off

.

The

low

collector

voltage

of

Q

5

also

disables

the

timing

circuit

by

forward

biasing

diode

D

4

and

providing

a

path

for

current

to

flow

through

Q

5

so

that

capacitor

C

2

cannot

charge

up

to

a

point

where

it

will

again

fire

unijunction

Q

3

.

When

the

turn

on

of

transistor

Q

5

turned

Q

7

off

,

the

potential

of

the

col

-

lector

of

Q

7

rose

and

supplied

base

drive

to

Q

8

turn

-

ing

it

on

.

The

turn

on

of

Q

8

allows

base

current

to

flow

from

Q

9

turning

it

on

.

This

switching

on

of

Q

9

energizes

the

close

relay

,

closing

the

normally

open

contact

to

the

positive

battery

supply

.

CHARACTERISTICS

Voltage

Rating

The

SGR

-

51

is

rated

for

48

or

125

volts

d

-

c

.

Un

-

less

otherwise

specified

,

the

relays

are

connected

for

125

-

volt

operation

when

shipped

.

Temperature

Range

The

SGR

-

51

is

designed

to

operate

over

a

tem

-

perature

range

from

—

20

#

C

to

+

55

*

C

with

timing

vari

-

ations

of

not

more

than

+

5

%

.

Energy

Requirements

If

a

fault

appears

on

the

protected

line

and

a

protective

relay

opens

the

breaker

,

the

52

b

con

-

tacts

make

up

providing

a

path

to

battery

positive

through

the

closed

contacts

of

the

close

relay

to

energize

and

immediately

reclose

the

breaker

.

55

milliamperes

at

rated

voltage

.

SETTINGS

Reset

Time

Setting

The

reclosing

of

the

breaker

reopens

the

52

b

contact

,

switching

transistors

Q

1

and

Q

6

on

.

Cap

-

acitor

C

5

then

discharges

through

Q

6

to

give

a

re

-

sultant

voltage

drop

across

R

19

which

causes

the

voltage

on

the

emitter

of

Q

5

to

rise

above

its

base

voltage

.

This

causes

flip

-

flop

transistor

Q

5

to

turn

off

,

setting

the

flip

-

flop

.

With

Q

5

turned

off

,

Q

7

is

supplied

with

base

drive

switching

it

on

and

Q

8

and

Q

9

off

.

With

transistor

Q

9

turned

off

,

the

close

relay

is

de

-

energized

and

its

contact

reopens

.

With

the

turn

off

of

Q

5

and

the

setting

of

the

flip

-

flop

,

Q

4

is

turned

on

,

and

the

lockout

indicator

circuit

is

ener

-

gized

by

Q

4

shorting

out

the

base

drive

to

Q

10

,

turn

-

ing

it

off

,

thereby

switching

Qll

on

to

energize

the

amber

lockout

indicator

.

The

reset

time

is

controlled

by

front

-

mounted

potentiometer

R

39

which

has

a

calibrated

time

dial

.

The

reset

time

is

variable

from

3

to

30

seconds

.

INSTALLATION

The

relays

should

be

mounted

on

switchboard

panels

or

their

equivalent

in

a

location

free

from

dirt

,

moisture

,

excessive

vibration

and

heat

.

Mount

the

relay

vertically

by

means

of

the

four

mounting

holes

on

the

flange

for

semi

-

flush

mounting

or

by

means

of

the

rear

mounting

stud

or

studs

for

pro

-

jection

mounting

.

Either

a

mounting

stud

or

the

mounting

screws

may

be

utilized

for

grounding

the

relay

.

The

electrical

connections

may

be

made

di

-

rectly

to

the

terminals

by

means

of

screws

for

steel

panel

mounting

or

to

the

terminal

studs

furnished

with

the

relay

for

thick

panel

mounting

.

The

terminal

studs

may

be

easily

removed

or

inserted

by

locking

two

nuts

on

the

stud

and

then

turning

the

proper

nuts

with

a

wrench

.

See

Fig

.

8

for

outline

and

drilling

plan

.

When

the

52

b

contact

reopened

and

switched

tran

-

sistor

Q

1

on

,

the

base

drive

to

Q

2

was

shorted

and

Q

2

turned

off

to

reverse

bias

diode

D

3

and

allow

capacitor

C

2

to

again

charge

through

R

37

and

RIO

.

Let

us

assume

that

a

protective

relay

operates

to

trip

the

breaker

before

capacitor

C

2

has

charged

to

the

firing

level

of

Q

3

.

When

the

breaker

opens

,

the

52

b

contact

closes

switching

Q

1

off

and

Q

2

on

to

for

-

For

detailed

FT

case

information

,

refer

to

I

.

L

.

41

-

076

.

3

Courtesy of NationalSwitchgear.com

I

.

L

.

41

-

668

.

IE

ADJUSTMENTS

AND

MAINTENANCE

Troubleshooting

Use

the

following

procedure

to

locate

the

source

of

trouble

in

the

event

of

improper

relay

operation

.

1

.

Inspect

all

wires

and

connections

.

The

proper

adjustments

to

insure

correct

oper

-

ation

of

this

relay

have

been

made

at

the

factory

and

no

further

adjustment

should

be

required

.

2

.

Check

resistances

as

listed

in

the

electrical

parts

list

.

Acceptance

Tests

The

following

check

is

recommended

to

insure

that

the

relay

is

in

proper

working

order

.

All

checks

can

best

be

performed

by

connecting

the

SGR

-

51

as

shown

in

Figure

5

,

with

the

cal

-

operated

switch

in

the

operate

position

and

the

reset

timer

knob

ro

-

tated

to

the

3

-

second

position

.

3

.

Check

voltages

or

waveforms

as

listed

under

electrical

checkpoints

using

a

vacuum

tube

voltmeter

and

/

or

an

oscilloscope

.

Electrical

Checkpoints

Apply

rated

voltage

through

a

switch

to

relay

terminals

8

and

9

.

Terminal

9

is

positive

.

Push

PB

-

1

to

close

relay

B

.

Immediately

thereafter

,

push

PB

-

2

.

Relay

B

should

trip

open

and

remain

locked

out

.

Set

the

reset

time

dial

for

15

seconds

.

Apply

rated

voltage

to

the

relay

to

test

the

circuit

board

.

Reclose

relay

B

by

pushing

PB

-

1

.

After

3

or

more

seconds

,

push

and

hold

PB

-

2

.

Relay

B

should

trip

open

,

reclose

,

trip

open

and

remain

locked

out

.

Apply

voltage

before

each

testpoint

otfeck

,

and

interrupt

it

after

each

check

.

Take

testpoint

read

-

ings

before

and

after

the

reset

time

shown

on

the

time

dial

.

Calibration

Check

The

following

procedure

may

be

used

to

accu

-

rately

check

the

time

dial

calibration

.

Use

the

following

table

to

determine

the

correct

voltages

or

waveforms

at

the

indicated

point

.

Refer

to

Figures

6

and

7

for

circuit

board

component

layouts

.

With

the

cal

-

operate

switch

in

the

cal

position

,

apply

rated

voltage

.

Push

PB

-

1

to

start

the

timer

.

The

CR

contacts

should

close

to

stop

the

timer

after

the

time

set

on

the

reclose

timer

has

elapsed

.

RENEWAL

PARTS

Repair

work

can

be

done

most

satisfactorily

at

the

factory

.

However

,

interchangeable

parts

can

be

furnished

to

the

customers

who

are

equipped

,

for

doing

repair

work

.

When

ordering

parts

,

always

give

complete

nameplate

data

.

Routine

Maintenance

All

relays

should

be

checked

at

least

once

every

year

or

at

such

other

intervals

as

may

be

dic

-

tated

by

experience

to

be

suitable

to

the

particular

application

.

4

Courtesy of NationalSwitchgear.com

I

.

L

.

41

-

668.1

E

NORMAL

INDICATIONS

COMPONENTS

CHECKED

TEST

POINT

CIRCUIT

AFTER

RESET

BEFORE

RESET

Z

4

,

R

36

20

V

±

1.0

V

20

V

±

1.0

V

Reset

Board

Terminal

1

Circuit

Board

Supply

Voltage

Reset

Circuit

Bd

.

Q

2

,

Q

3

,

C

2

,

C

3

,

R

37

,

D

3

,

D

4

Slow

Voltage

Rise

to

Approx

.

15

Volts

Approx

.

1

V

Approx

.

1.4

V

Junction

of

RIO

and

C

2

Timing

Circuit

C

4

,

Q

4

,

Q

5

Approx

.

15

V

Junction

of

R

14

and

R

18

Junction

of

R

16

and

R

21

Junction

of

R

26

and

D

6

Junction

of

Q

9

and

D

7

Flip

-

Flop

Control

Circuit

Approx

.

Approx

.

15

V

1

V

Approx

.

Close

Relay

Circuit

Approx

.

Q

7

8

V

0

V

Q

8

,

Q

9

,

D

7

Approx

.

20

V

Approx

.

0

V

All

measurements

made

between

indicated

points

and

d

-

c

negative

.

5

Courtesy of NationalSwitchgear.com

I

.

L

.

41

-

668.1

E

O

ELECTRICAL

PARTS

LIST

RELAY

TYPE

SGR

-

51

INDICATOR

MODULE

691

B

448

G

01

RELAY

TYPE

SGR

-

51

RESET

MODULE

201

C

419

G

01

SUB

34

STYLE

RESISTOR

CAPACITOR

1

/

2

W

5

%

35

V

82.0

K

10

.

OK

4.70

K

4.70

K

8.20

K

Metal

Film

15

.

OK

10

.

OK

22

.

OK

33.0

K

49.9

K

680

Ohm

47

Ohm

10

Ohm

10

.

OK

10.0

K

33.0

K

10

.

OK

33.0

K

47

Ohm

330

Ohm

10

.

OK

184

A

763

H

73

184

A

763

H

51

184

A

763

H

43

184

A

763

H

43

629

A

531

H

54

C

01

1.5

MFD

22.0

MFD

1.5

MFD

.

047

MFD

4.7

MFD

1.5

MFD

.

1

UF

.

033

UF

.

047

UF

187

A

508

H

09

862

A

177

H

04

187

A

508

H

09

188

A

669

H

16

184

A

661

H

12

187

A

508

H

18

3526

A

65

H

10

863

A

166

H

07

188

A

669

H

17

R

01

1

/

2

W

C

02

100

V

R

02

5

%

1

/

2

W

C

03

35

V

R

03

5

%

1

/

2

W

C

04

100

V

R

04

5

%

1

/

2

W

R

05

2

%

C

05

35

V

C

13

35

V

5

%

100

V

1

%

50

V

10

%

50

V

10

%

1

/

2

W

1

/

2

W

1

/

2

W

R

06

629

A

531

H

60

184

A

763

H

51

184

A

763

H

59

184

A

763

H

63

836

A

503

H

65

184

A

763

H

23

187

A

290

H

17

187

A

290

H

01

184

A

763

H

51

184

A

763

H

51

184

A

763

H

63

184

A

763

H

51

184

A

763

H

63

187

A

290

H

17

184

A

763

H

15

184

A

763

H

51

184

A

763

H

34

184

A

763

H

62

184

A

763

H

51

184

A

763

H

81

184

A

763

H

71

184

A

763

H

51

184

A

763

H

63

184

A

763

H

51

184

A

763

H

51

184

A

763

H

58

184

A

763

H

81

184

A

763

H

51

184

A

763

H

58

184

A

763

H

34

11

D

951

JH

10

2

%

C

22

R

07

5

%

C

23

R

08

5

%

C

24

1

/

2

W

R

09

5

%

1

/

2

W

RIO

1

%

TRANSISTOR

1

/

2

W

Rll

5

%

1

/

2

W

R

12

5

%

Q

01

2

N

3417

Q

02

2

N

3417

Q

03

SIM

to

2

N

2647

Q

04

2

N

3417

Q

05

2

N

3417

Q

06

2

N

3645

Q

07

2

N

3417

Q

08

2

N

3417

Q

09

2

N

3645

Q

10

2

N

3417

2

N

3417

848

A

851

H

02

848

A

851

H

02

629

A

43

£

H

05

848

A

851

H

02

848

A

851

H

02

849

A

441

H

01

848

A

851

H

02

848

A

851

H

02

849

A

441

H

01

848

A

851

H

02

848

A

851

H

02

1

/

2

W

R

13

5

%

1

/

2

W

R

14

5

%

1

/

2

W

R

15

5

%

1

/

2

W

R

16

5

%

1

/

2

W

R

17

5

%

1

/

2

W

R

18

5

%

1

/

2

W

R

19

5

%

1

/

2

W

R

20

5

%

1

/

2

W

R

21

5

%

Qll

1

/

2

W

R

22

2.0

K

5

%

1

/

2

W

R

23

30.0

K

10

.

OK

180

.

OK

68.0

K

10.0

K

3

.

OK

10

.

OK

10.0

K

20

,

000

1

/

2

W

5

%

180

,

000

1

/

2

W

5

%

10

,

000

1

/

2

W

5

%

20

,

000

1

/

2

W

5

%

2

,

000

1

/

2

W

5

%

1

,

000

tapped

at

510

25

W

5

%

5

%

1

/

2

W

R

24

5

%

ZENER

1

/

2

W

R

25

5

%

1

/

2

W

R

26

5

%

187

A

936

H

13

878

A

619

H

01

186

A

797

H

01

849

A

487

H

01

878

A

619

H

01

Z

01

1

N

3049

B

Z

02

1.5

KE

200

Z

03

1

N

758

Z

04

1

N

4747

A

Z

12

1.5

KE

200

1

/

2

W

R

27

5

%

1

/

2

W

5

%

1

/

2

W

5

%

1

/

2

W

5

%

R

28

R

29

R

30

R

31

R

32

DIODE

R

33

R

34

837

A

692

H

03

837

A

692

H

03

837

A

692

H

03

837

A

692

H

03

837

A

692

H

03

837

A

692

H

03

837

A

692

H

03

837

A

692

H

03

D

01

1

N

645

A

DO

2

1

N

645

A

D

03

1

N

645

A

D

04

1

N

645

A

D

05

1

N

645

A

D

06

1

N

645

A

D

07

1

N

645

A

D

08

1

N

645

A

R

35

R

36

RELAY

MISCELLANEOUS

541

D

231

H

22

862

A

634

G

01

CR

Close

Relay

IND

.

1

Lockout

Indicator

6

Courtesy of NationalSwitchgear.com

*

0

52

B

I

R

35

LOCKOUT

,

t

3

s

CE

.

1

Oil

to

I

n

llO

ce

0

=

1

X

4

I

INDICATOR

691

B

418

G

0

I

i

jR

37

t

i

A

/

s

A

3

<

r

4

'

*

5

'

6

8

a

n

i

r

i

a

*

I

1

•

3

•

&

{

;

o

cu

1

—

*

:

Si

RED

DOT

:

tc

OV

TO

CVi

|

•

*

i

la

:

!

a

:

itt

:

a

:

.

ICC

!

IS

CE

,

CE

:

22

I

2

A

D

4

212

CM

r

*

©

a

(

E

D

3

^

1

03

C

24

ikJT

M

CR

o

'

I

7

CE

:

CE

NOTED

)

lO

L

*

©

Sir

01

o

a

QA

Q

5

i

rO

,

IM

-

•

r

-

.

Q

.

L

TO

«

L

13

!

-

l

o

TO

r

-

CM CM

O

U

NJ

cr

*

o

J

-

O

'

T

*

«

i

4

-

J

-

CVI

O

'

T

'

CM

1

TO

V

D

5

|

CSJ

-

r

T

$

T

c

>

|

CE

!

cc

4

*

CE

!

Jf

07

J

#

D

C

R

'

-

£

AI

K

02

rQ

?

E

cr

|

£

E

HR

m

-

1

-

4

-

i

CM

’

.

CM

A

1

C

22

o

T

i

CM

‘

IS

CE

*

1

CE

V

T

TT

©

i

9

*

«

>

NEC

*

L

l

RESET

2

QIC

4

I

9

G

01

rQ

5

l

=

DE

NOTES

NORMALLY

CONDUCTING

TRANSISTOR

"

C

0

"

o

<

r

"

c

_

"

c

"

c

"

PRINTED

CKT

.

CONNECTION

NOTE

:

SCHEMATIC

SHOWN

ENERGIZED

AND

IN

RESET

CONDITION

FRCNT

VIEW

FT

CASE

CONNECTIONS

O

Fig

.

3

.

interna

!

Schematic

of

Type

SGR

-

51

Relay

1

Courtesy of NationalSwitchgear.com

POS

.

O

-

86

B

+

^

r

43

;

blOISC

±

\

01

C

1

SGR

-

51

(

DWG

.

20

IC

422

)

-

2

-

n

7

»

;

'

10

I

=

h

43

S

r

I

9

I

R

36

79

CR

±

I

+

20

VDC

-

*

?

LOCKOUT

'

.

JNDICATOf

AMP

C

^

A

)

—

0

79

S

0

4

i

SINGLE

SHOT

<

—

0

^

44

-

22

/

-

52

b

FF

.

A

3

-

30

C

0

SEC

.

i

I

N

I

0

r

RESET

TIMER

CLOSE

PWR

.

SUPPtt

20

VDC

I

Ijn

J

52

b

—

n

-

NEG

.

43

-

AUTOMATIC

OPERATION

CUTOUT

SW

.

52

b

-

CIR

.

&

KR

.

AUX

.

SW

.

79

-

SGR

-

51

AUTOMATIC

RECLOSM

^

G

RELAY

8

GB

-

BUS

LOCKOUT

101

~

CONTROL

SWITCH

43

$

-

SYNCHRONIZING

SWITCH

LOGIC

STATE

AND

CONTACTS

SHOWN

WITH

BREAKER

CLOSED

,

52

b

OPEN

AND

SGR

“

5

I

RESET

.

876

A

231

Fig

.

4

.

Externa

!

Schematic

of

Type

SGR

-

51

Relay

TEST

CIRCUIT

FOR

TYPE

SGR

-

51

RELAY

ED

B

*

(

w

)

MG

-

6

RELAY

OR

EQUIVALENT

0

A

*

OPERATE

COIL

*

RESET

COIL

RI

=

500

nr

25

W

025

VDC

)

50

A

-

25

W

(

48

VDC

)

a

s

TIMER

STOP

l

CAL

.

C

|

2

OMF

0

.

150

V

0

*

1

NOTE

:

TIMER

TO

START

AND

STOP

ON

MAKE

OF

CONTACTS

OPER

.

Bb

B

*

Rl

0

B

COIL

INTERRUPTING

CONTACT

B

*

0

TIMER

START

<

i

0

c

—

c

PB

-

I

•

RATED

VOLTAGE

TIMER

COMMON

9

A

CAL

.

10

OPER

.

876

A

366

Fig

.

5

.

Test

Circuit

for

Type

SGR

-

51

Relay

9

Courtesy of NationalSwitchgear.com

I

.

L

.

41

-

668

.

IE

i

£

^

3

^

o

(

71

-

<

W

rhll

0.111

1

O

X

ro

o

X

o

X

ro

P

0

o

-

g

no

oi

ID

CJi

ro

04

o

+

04

+

ro

TTT

T

N

-

r

+

-

J

t

>

Hj

—

reai

—

®

©

r

TTT

9

Y

YT

@

-

*

>

Sub

5

691

B

442

O

Fig

.

6

.

Component

Layout

of

SGR

-

51

Reset

Board

+

i

*

ro

in

ro

<

M

ro

GC

(

C

ro

<

r

cc

EC

®

4

I

862

A

741

Fig

.

7

.

Component

Layout

SGR

-

51

Indicator

Board

10

Courtesy of NationalSwitchgear.com

ABB SGR-51 Manuale utente

Manuali Staffetta popolari di altre marche