GE CAL16A Manuale utente

GEI

-

31090

A

INSTRUCTIONS

SUPEftlEOtt

GEf

'

9

(

0 9

NETWORK

RELAYS

Types

C

A

LI

6

A

CAN

13

A

;

W

«

BI

won

POWER

SYSTEMS

MANAGEMENT

DEPARTMENT

A

Si

GENERAL

ELECTRIC

*

PHILADELPHIA

,

PA

.

Courtesy of NationalSwitchgear.com

NETWORK

RELAY

TYPES

CAL

16

A

AND

CAN

13

A

INTRODUCTION

With

a

few

eptions

,

the

Type

CAL

16

A

and

CAN

13

A

relays

are

Identical

In

construction

and

function

to

the

standard

secondary

network

relays

shown

in

the

Included

instruction

book

GEl

-

13580

.

The

CAN

13

A

will

prevent

reclosure

if

the

source

phase

sequence

is

reversed

and

the

network

phase

sequence

is

normal

.

The

principal

difference

af

-

fecting

both

relays

is

that

the

glass

cover

and

mounting

bracket

have

been

removed

,

and

the

relays

have

been

mounted

in

the

drawout

case

for

mounting

on

a

panel

.

Also

,

both

relays

have

2

ampere

holding

coils

in

the

reclose

circuits

,

Instead

of

the

0.3

ampere

coils

as

In

the

standard

relay

.

The

Type

CAN

13

A

relay

differs

from

the

Type

CAN

11

A

relay

In

several

points

concerning

physical

construction

and

electrical

connections

.

The

only

change

in

function

is

that

it

is

designed

to

trip

at

approximately

0.005

ampere

,

current

transformer

secondary

current

,

in

phase

with

line

-

to

-

neutral

voltage

.

It

is

intended

to

be

used

for

tripping

when

the

only

reverse

power

flowing

is

the

magnetizing

current

of

the

associated

power

transformer

.

The

principal

differences

between

the

Type

CAN

13

A

relay

and

the

Type

CAN

11

A

relay

areas

follows

:

1

.

The

reclose

contact

is

on

the

left

and

the

trip

contact

on

the

right

,

facing

the

relay

,

on

the

Type

CAN

13

A

relay

.

This

is

the

reverse

of

the

Type

CAN

11

A

relay

.

2

.

The

main

control

spring

is

used

to

adjust

trip

value

and

the

mechanical

restraint

Is

used

to

adjust

reclose

value

on

the

Type

CAN

13

A

relay

.

3

.

The

electrical

restraint

element

has

been

omitted

on

the

Type

CAN

11

A

relay

.

4

.

The

potential

coils

,

instead

of

being

connected

directly

to

the

network

side

of

the

breaker

are

,

connected

to

a

resistor

combination

across

each

pole

of

the

associated

breaker

.

This

last

feature

allows

the

potential

coils

to

be

energized

from

the

network

side

when

the

source

side

is

de

-

energized

;

or

from

the

source

side

when

the

network

side

is

de

-

energized

.

When

the

breaker

is

closed

,

the

two

sections

of

the

resistor

com

-

bination

on

each

phase

are

effectively

in

parallel

and

the

net

resistance

is

the

same

as

that

ordinarily

used

with

the

Type

CAN

11

A

relay

(

t

.

e

.

,

340

ohms

when

6054972

G

8

is

used

as

the

phase

-

shifting

trans

-

former

,

and

when

the

900

ohm

resistor

is

used

in

the

phase

circuit

for

1.5

volt

reclosure

.

)

Therefore

the

tripping

characteristic

is

the

same

except

that

the

setting

is

0.1

%

instead

of

0.2

%

of

the

relay

rating

.

RECEIVING

,

HANDLING

AND

STORAGE

CO

The

relays

,

when

not

included

as

a

part

of

a

control

panel

,

will

be

shipped

in

cartons

designed

to

protect

them

against

damage

.

Immediately

upon

receipt

of

a

relay

examine

it

for

any

damages

sus

-

tained

in

transit

.

If

injury

or

damage

from

rough

handling

is

evident

,

file

a

damage

claim

at

once

with

the

transportation

company

and

promptly

notify

the

nearest

General

Electric

Apparatus

Sales

Office

.

Reasonable

care

should

be

exercised

in

unpack

-

ing

the

relay

in

order

that

none

of

the

parts

are

injured

or

the

adjustments

distrubed

.

If

the

relays

are

not

to

be

installed

immediately

,

they

should

be

stored

in

their

original

cartons

in

a

place

that

is

free

from

moisture

,

dust

and

metallic

chips

.

Foreign

matter

collected

on

the

outside

of

the

case

may

find

its

way

inside

when

the

cover

is

removed

and

cause

trouble

in

the

operation

of

the

relay

.

=

r

-

8

cO

V

O

o

DESCRIPTION

RELAY

CASE

reset

mechanism

when

one

is

required

.

Each

cover

screw

has

provision

for

a

sealing

wire

.

The

case

is

suitable

for

either

surface

or

semi

-

flush

panel

mounting

and

an

assortment

of

hardware

is

provided

for

either

mounting

.

The

cover

attaches

to

the

case

and

also

carries

the

The

case

has

studs

or

screw

connections

at

both

ends

or

at

the

bottom

only

for

the

external

connections

.

The

electrical

connections

between

These

instructions

do

not

purport

to

cover

all

details

or

variations

in

equipment

nor

to

provide

for

every

possible

contingency

to

be

met

in

connection

with

installation

,

operation

or

nuintenance

.

further

information

be

desired

or

should

particular

problems

arise

which

are

not

covered

sufficiently

for

the

purchaser

*

s

purposes

/

the

matter

should

be

referred

to

the

General

Electric

Company

.

To

the

extent

required

the

products

described

herein

meet

applicable

ANSI

,

IEEE

and

HE

HA

standards

/

but

no

such

assurance

is

given

with

respect

to

local

codes

and

ordinances

because

they

vary

greatly

.

Should

3

Courtesy of NationalSwitchgear.com

GUI

-

31090

Network

Relays

Types

CAL

10

A

and

CAN

13

A

spec

live

blocks

of

the

cradle

and

case

,

also

locks

the

latch

In

place

.

The

cover

,

which

Is

fastened

to

the

case

by

thumbscrews

,

holds

the

connecting

plug

In

place

.

the

relay

units

and

the

case

studs

are

made

through

spring

tacked

contact

fingers

mounted

In

stationary

molded

Inner

and

outer

blocks

between

which

nests

a

removable

connecting

plug

which

completes

the

circuits

.

The

outer

blocks

,

attached

to

the

case

,

have

the

studs

for

the

external

connections

,

and

the

Inner

blocks

have

the

terminals

for

the

Internal

connections

.

The

relay

mechanism

Is

mounted

In

a

steel

framework

called

the

cradle

and

Is

a

complete

unit

with

all

leads

being

terminated

at

the

Inner

block

.

This

cradle

is

held

firmly

at

the

top

and

the

bottom

and

by

a

guide

at

the

back

of

the

case

.

The

cases

and

cradles

are

so

constructed

that

the

relay

cannot

be

Inserted

In

the

case

upside

down

.

The

connecting

plug

,

besides

making

the

electrical

connections

between

the

re

-

To

draw

out

the

relay

unit

the

cover

la

first

removed

,

and

the

plug

drawn

out

Shorting

bars

are

provided

In

the

case

to

short

the

ourrent

transfor

-

mer

circuits

.

The

latches

are

then

released

,

and

the

relay

unit

can

be

easily

drawn

out

To

replace

the

relay

unit

,

the

reverse

order

Is

followed

.

A

separate

testing

plug

can

be

Inserted

In

place

of

the

connecting

plug

to

test

the

relav

In

place

the

panel

either

from

Its

own

source

of

current

and

voltage

,

or

from

other

sources

.

Or

,

the

relay

unit

can

be

drawn

out

and

replaced

by

another

which

has

been

tested

Ln

the

laboratory

.

in

the

case

with

a

latch

on

INSTALLATION

LOCATION

AND

MOUNTING

dimensions

for

the

Type

CAN

13

A

relay

,

in

the

size

M

2

case

,

is

shown

in

Fig

,

7

.

CONNECTIONS

The

internal

connections

for

the

Type

CAL

16

A

and

CAN

13

A

relays

are

shown

In

Figs

,

1

and

2

respectively

,

A

typical

external

connection

diagram

for

the

The

outline

and

panel

drilling

Types

CALI

6

A

andCAN

13

A

relays

is

shown

in

Fig

.

3

.

The

location

should

be

clean

and

dry

,

free

from

dust

and

excessive

vibration

,

and

well

lighted

to

facilitate

inspection

and

testing

.

The

relay

should

be

mounted

on

a

vertical

sur

-

face

.

The

outline

and

panel

drilling

dimensions

for

the

Type

CAL

16

A

relay

,

In

the

size

Ml

case

,

ia

shown

in

Fig

.

6

,

I

7

19

10

I

o

Q

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CALI

6

A

Fig

.

J

Internal

Connection

#

For

Relay

Type

CAN

ISA

Fig

.

2

A

Courtesy of NationalSwitchgear.com

Network

Relays

Types

CAL

16

A

and

CAN

13

A

GEI

-

31090

INCOMING

LINE

1

2

3

1

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CAN

HC

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8

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TRANS

.

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.

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11

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CAL

16

A

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NETWORK

Fig

.

3

External

Connections

For

Types

CAL

16

A

And

CAM

13

A

Relays

5

Courtesy of NationalSwitchgear.com

GEI

-

31090

Network

Relays

Types

CAL

18

A

and

CAN

13

A

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Schematic

Diagram

Of

Teat

Connections

For

Relay

Type

CAN

13

A

Fig

.

4

6

Courtesy of NationalSwitchgear.com

Network

Relays

Types

CAL

16

A

and

CAN

13

A

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-

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Schematic

Diagram

Of

Test

Connections

For

Relay

Type

CAL

J

6

A

Fig

.

5

MAINTENANCE

TYPE

CAN

13

A

RELAYS

INSPECTION

AND

MECHANICAL

ADJUSTMENT

1

.

The

main

control

spring

of

the

Type

CAN

13

A

relay

Is

adjusted

so

that

the

trip

contacts

are

open

with

zero

windup

on

the

control

spring

adjusting

shaft

,

and

are

just

made

when

there

are

3

half

-

turns

windup

(

counterclockwise

)

on

the

adjusting

shaft

*

The

normal

position

of

the

spring

Is

such

that

the

right

-

hand

(

trip

)

contacts

just

make

with

the

relay

de

-

energized

*

This

can

be

checked

by

deflecting

the

right

-

hand

stationary

contact

to

the

right

and

noting

that

the

moving

contacts

do

not

move

to

the

right

.

2

.

Items

1

to

9

under

INSPECTION

AND

MECH

-

ANICAL

ADJUSTMENT

In

GEI

-

13580

apply

to

the

Type

CAN

13

A

relay

.

Item

10

under

the

same

heading

,

covering

the

electrical

restraint

ele

-

ment

,

does

not

apply

*

CALIBRATION

TESTS

AND

ADJUSTMENTS

be

Just

made

.

With

only

the

potential

colls

ener

-

gized

,

the

moving

contacts

should

pull

away

from

the

trip

contact

.

Closing

the

switch

In

the

current

cir

-

cuit

to

pass

current

through

the

H

winding

,

with

the

connections

shown

,

should

produce

a

torque

In

the

direction

to

close

the

trip

contact

.

With

the

te

$

-

connections

shown

,

a

sing

e

-

phase

current

Is

ust

*

and

the

required

single

-

phase

current

is

equal

to

1.5

times

the

desired

three

-

phase

trip

setting

.

For

example

,

If

it

is

desired

to

trip

at

0.005

amperes

balanced

three

-

phase

current

,

the

ammeter

A

should

read

0.0075

amperes

because

of

the

single

-

phase

current

.

The

trip

calibration

can

be

adjusted

above

or

below

the

factory

setting

,

or

the

factory

setting

can

be

restored

,

by

adjusting

the

main

control

spring

adjusting

shaft

(

see

photographs

of

CAN

relay

,

Fig

.

19

In

GEI

-

13580

)

.

Turning

this

shaft

clockwise

increases

the

amount

of

reverse

current

required

for

tripping

,

and

turning

the

shait

counterclockwise

decreases

the

amount

of

reverse

current

required

.

Reclosing

To

check

the

voltage

necessary

for

reclosing

connect

as

shown

in

the

lower

diagram

of

Fig

.

4

.

The

one

ohm

resistor

in

parallel

with

the

phasing

(

Y

)

winding

of

the

phase

shifting

transformers

has

such

a

low

Impedance

compared

to

the

phasing

windings

that

practically

all

of

the

current

read

by

ammeter

A

passes

through

the

resistor

,

and

the

ammeter

reading

is

equal

to

the

voltage

across

the

resistor

.

Since

this

ts

a

"

single

-

phase

"

test

,

the

voltage

applied

must

be

1

*

5

times

the

desired

three

-

phase

reclose

setting

.

For

example

,

for

a

three

-

phase

1

,

5

volt

reclose

setting

,

the

ammeter

A

should

read

2

*

25

amperes

.

Fig

.

4

shows

the

test

connections

for

checking

and

adjusting

both

the

tripping

and

reclosing

cali

-

bration

.

The

trip

setting

should

be

checked

first

because

any

adjustment

of

the

trip

setting

also

affects

the

reclose

setting

;

whereas

,

the

reclose

setting

can

be

adjusted

independently

of

the

trip

setting

and

should

therefore

be

made

last

.

Tripping

Connect

the

relay

as

shown

In

Fig

.

4

.

With

the

relay

de

-

energized

,

the

right

-

hand

contact

should

7

Courtesy of NationalSwitchgear.com

GEl

-

31090

Network

Relays

Types

CAL

16

A

and

CAN

13

A

except

at

the

Instant

the

contacts

touch

.

Interrupt

the

holding

current

by

an

external

switch

in

the

contact

circuit

,

never

at

the

contacts

.

TYPE

CAL

16

A

RELAY

The

Type

CAL

16

A

relay

Is

Identical

to

the

Type

CAL

15

A

relay

,

described

in

the

Included

Instruc

-

tion

book

GEl

-

13580

,

except

that

it

is

mounted

in

a

drawout

case

.

For

calibration

,

the

relay

should

be

connected

as

shown

In

Fig

.

5

.

The

normal

cali

-

bration

of

the

Type

CAL

16

A

relay

Is

to

close

its

contacts

when

the

phasing

voltage

(

on

studs

7

-

8

)

is

gradually

Increased

to

0.5

volt

,

leading

the

potential

voltage

(

studs

5

-

6

)

by

90

degrees

.

Adjustments

can

be

made

as

described

in

GEI

-

13580

.

The

reclose

calibration

of

the

relay

can

be

changed

by

adjusting

the

mechanical

restraint

ele

-

ment

.

Turning

the

cap

of

the

restraint

clockwise

increases

the

restraint

and

therefore

the

reclose

calibration

.

Holding

Coils

Both

holding

-

coils

of

the

Type

CAN

13

A

relay

are

rated

2

amperes

.

These

holding

coils

can

be

checked

as

part

of

the

trip

and

reclose

adjustments

above

by

connecting

an

adjustable

resistor

in

the

contact

circuit

and

adjusting

the

holding

coil

circuit

to

2

amperes

.

As

soon

as

the

trip

or

reclose

con

-

tacts

make

,

the

sealing

armature

should

definitely

seal

them

closed

,

and

there

should

be

no

sparking

8

Courtesy of NationalSwitchgear.com

Network

Relays

Types

CAL

16

A

and

CAN

13

A

GEI

-

31090

PANEL

LOCATION

SEMI

-

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Panel

Drilling

Dimensions

For

Relay

Type

CALI

6

A

9

Courtesy of NationalSwitchgear.com

GEI

-

3

J

090

Network

Relays

Types

CAL

16

A

and

CAN

13

A

PANEL

LOCATION

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-

FLUSH

SURFACE

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PANEL

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-

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(

FRONT

VIEW

)

Outline

And

Panel

Drilling

Dimensions

For

Relay

Type

CAHI

3

A

Fig

.

7

10

Courtesy of NationalSwitchgear.com

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