ABB TMC Manuale utente

Ann

APV

7.1

1.7

Issue

INSTRUCTIONS

Ground

Fault

Monitor

TYPE

TMC

Monitor

without

Sensor

Test

Feature

TYPE

TMS

Monitor

with

Sensor

Test

Feature

For

Use

with

Type

GRC

Ground

Relay

GRP

CCJNT

•

vCJt

;

ABB

POWER

COMPANY

INC

ALLENTOWN

PENNSYLVANIA

USA

Courtesy of NationalSwitchgear.com

PAGE

GROUND

FAULT

MONITOR

TABLE

CONTENTS

Page

Int

roduction

Precautions

Placing

Monitor

into

Service

Application

Data

Operation

Testing

INTRODUCTION

These

instructions

contain

the

information

required

properly

install

operate

and

test

the

Ground

Shield

ground

fault

test

and

monitor

panel

Types

TMC

and

TMS

semi

flush

and

surface

mounted

The

TMC

and

TMS

monitors

are

optional

accessories

for

use

with

the

Type

GRC

surface

case

ground

fault

relays

provide

operation

indicators

and

testing

features

Standard

features

include

Flush

mounting

case

Memory

type

operation

target

Lamp

indicate

availability

control

power

Relay

testing

with

without

tripping

disconnect

means

Sensor

testing

with

without

tripping

disconnect

means

(

Type

TMS

only

)

Optional

features

Auxiliary

contact

output

for

tripping

alarm

prevent

reclosing

circuit

reakers

See

Instruction

Book

7.1

1.7

for

information

covering

the

Type

GRC

ground

relay

and

Type

ground

sensors

The

Type

TMS

monitor

can

used

only

with

those

ground

sensors

that

include

test

winding

(

Terminal

nTn

)

Earlier

versions

the

TMC

Monitor

catalog

number

202

3010

and

202

321

(

120

VAC

125

VDC

dual

rating

)

have

slightly

different

connections

than

the

units

shown

this

instruction

book

See

MAINTENANCE

Page

refer

1.7

See

Instruction

Book

1.1

for

recommendations

for

Field

Testing

Ground

Fault

Systems

PRECAUTIONS

The

following

precautions

should

taken

when

applying

this

equipment

Incorrect

wiring

may

result

damage

gram

for

the

particular

unit

before

the

unit

energized

sure

wiring

agrees

with

the

connection

dia

control

wiring

not

apply

high

voltage

tests

solid

state

relays

monitors

insulation

test

required

bond

all

terminals

together

before

applying

test

voltage

monitor

test

instructions

verify

that

unit

proper

working

order

found

defective

suggest

that

returned

the

factory

for

repair

Immediate

replacement

can

made

available

from

the

factory

;

identify

catalog

num

suggest

that

complete

spare

unit

ordered

replacement

and

the

inop

erative

unit

repaired

and

retained

spare

entails

working

with

energized

equipment

caution

should

taken

avoid

personal

shock

ber

CAUTION

Since

roub

eshooting

Only

competent

technicians

familiar

with

good

safety

practices

should

service

these

devices

not

hold

the

TEST

SWITCH

the

test

position

for

than

seconds

Courtesy of NationalSwitchgear.com

7.1

1.7

PAGE

GROUND

FAULT

MONITOR

PLACING

THE

MONITOR

INTO

SERVICE

RECEIVING

HANDLING

STORAGE

Upon

receipt

the

unit

(

when

not

included

part

switchboard

)

examine

for

ship

ping

damage

nearest

BBC

Brown

Boveri

Inc

Sales

Office

damage

Keep

reasonably

clean

and

dry

the

operation

indicator

(

target

)

display

showing

orange

damage

loss

evident

file

claim

once

and

promptly

notify

the

Use

normal

care

handling

avoid

mechanical

The

ground

fault

monitor

normally

shipped

with

INSTALLATION

Mounting

The

panel

drilling

and

cutout

information

given

Figure

rectangular

panel

cutout

and

(

)

mounting

holes

are

required

The

outline

the

Type

TMC

shown

Figure

and

the

Type

TMS

shown

Figure

The

monitor

completely

enclosed

The

upper

part

the

front

plate

provides

space

for

user

’

identification

markings

associated

circuits

disconnect

means

stencil

ling

desired

remove

the

switch

guards

and

(

)

screws

(

inches

apart

)

detach

the

front

plate

Connections

Use

only

copper

wire

when

making

connections

Special

care

must

taken

connect

control

power

proper

voltage

and

polarity

See

monitor

nameplate

for

voltage

rating

Typical

external

connection

diagrams

TMC

and

TMS

monitors

and

GRC

relays

are

shown

Figures

monitor

leads

connected

the

ground

fault

relay

should

routed

gether

See

Application

Data

section

for

control

and

test

power

requirements

Remove

the

jumper

between

relay

terminals

and

the

GRC

relay

when

the

wired

monitor

NOTE

THE

MONITOR

DISCONNECTED

REMOVED

FROM

THE

CIRCUIT

FOR

ANY

REASON

YOU

MUST

REINSTALL

JUMPER

BETWEEN

TERMINALS

AND

THE

GRC

RELAY

(

JUMPER

COMPLETES

TRIPPING

CIRCUIT

)

CONTROLS

AND

INDICATORS

The

Type

TMC

TMS

monitor

does

not

contain

adjustments

which

require

field

settings

The

following

controls

and

indicators

are

provided

Indicates

presence

control

power

CONTROL

POWER

LIGHT

TRIP

SWITCH

Holding

the

spring

return

toggle

the

position

temporarily

disconnects

the

trip

coil

(

and

auxiliary

output

relay

provided

)

TEST

SWITCH

For

Type

TMC

tests

relay

with

without

tripping

circuit

breaker

Type

TMS

tests

sensor

and

relay

with

without

tripping

circuit

breaker

For

GROUND

FAULT

TARGET

Orange

target

indicates

relay

operation

under

ground

fault

test

conditions

Indication

retained

even

control

power

lost

after

operation

RESET

PUSHBUTTON

Resets

target

black

(

and

resets

auxiliary

output

relay

provided

)

INITIAL

CHECK

After

wiring

completed

and

checked

apply

control

power

and

note

lamp

lit

Then

attempt

reset

the

operation

indicator

the

indicator

cannot

reset

recheck

connections

voltage

and

polarity

not

attempt

any

other

tests

until

wiring

errors

are

corrected

Courtesy of NationalSwitchgear.com

7.1

PAGE

GROUND

FAULT

MONITOR

APPLICATION

DATA

The

Types

TMC

TMS

Test

and

Monitor

Panel

optional

flush

mounted

unit

for

use

with

the

standard

GRC

Ground

Fault

Relay

System

Standard

Features

include

)

CONTROL

POWER

LAMP

indicate

the

presence

control

power

the

relay

system

)

ground

fault

OPERATION

DICATOR

which

maintains

indication

even

loss

control

power

)

TEST

SWITCH

for

perform

ing

operational

test

the

GRC

ground

relay

)

TRIP

switch

prevent

the

disconnect

from

tripping

when

the

operational

test

performed

continuity

service

must

maintained

)

RESET

pushbutton

reset

the

target

from

orange

black

auxiliary

output

relay

can

provided

option

for

remote

alarm

other

purposes

Its

contacts

are

reset

after

relay

operation

the

RESET

pushbutton

TYPE

TMC

MONITOR

This

monitor

allows

testing

the

GRC

relay

and

the

disconnect

device

operation

the

sensor

includes

the

Any

terminal

the

Type

Ground

Sensors

may

used

this

system

must

jumpered

the

terminal

TYPE

TMS

MONITOR

The

Type

TMS

monitor

provided

with

test

circuits

and

current

limiting

resistors

inject

test

current

into

the

sensor

test

winding

(

“

amperes

maximum

)

Thus

the

test

power

transform

should

sized

accordingly

supply

the

test

current

120

VAC

for

seconds

minimum

rating

250

recommended

Note

that

the

monitor

test

and

control

circuits

are

isolated

hence

could

connected

different

sources

However

the

monitor

terminal

should

connect

the

ungrounded

end

the

120

VAC

test

source

and

terminal

the

sensor

must

wired

the

grounded

terminal

the

same

source

Also

the

optional

trip

alarm

contacts

are

iso

lated

and

could

connected

another

circuit

The

Type

TMS

monitor

designed

for

use

with

Type

sensors

that

have

provisions

for

test

ing

(

terminal

)

The

test

circuit

requires

that

the

jumper

supplied

the

sensor

removed

See

the

GRC

relay

instruction

book

7.1

1.7

”

for

list

available

sensors

CONTROL

SOURCE

CONNECTIONS

The

primary

control

transformer

provided

and

supplied

from

the

power

circuit

must

connected

line

When

control

power

taken

from

the

power

circuit

ahead

the

main

disconnecting

means

from

separate

source

the

control

circuit

conductors

should

have

overcurrent

protection

trol

circuit

overcurrent

protective

devices

should

have

interrupting

rating

adequate

for

the

short

circuit

current

available

should

kept

short

possible

Con

Conductors

ahead

the

control

circuit

overcurrent

protection

RATINGS

Major

ratings

appear

the

front

panel

labels

See

nameplate

for

nominal

control

voltage

Main

Control

Voltage

Available

control

voltage

models

120

VAC

125

VDC

Monitor

must

have

the

same

control

voltage

rating

the

associated

GRC

relay

Maximum

voltage

nominal

plus

Minimum

operating

control

voltage

nominal

for

monitors

nominal

for

monitors

Negligible

stand

;

operation

auxiliary

relay

Control

Source

Drain

Output

Contacts

125

VDC

amps

RMS

continuous

amp

break

(

resistive

)

0.3

amp

break

(

inductive

)

amps

RMS

for

0.33

seconds

12.5

amps

RMS

for

0.25

seconds

amps

RMS

for

second

Courtesy of NationalSwitchgear.com

7.1

1.7

PAGE

GROUND

FAULT

MONITOR

SENSOR

TEST

SOURCE

(

Type

TMS

Only

)

120

VAC

(

)

Sensor

Test

Drain

The

test

current

provided

the

TMS

Monitor

must

the

pick

current

range

the

GRC

Ground

Relay

used

the

application

Resistors

the

monitor

are

sized

provide

sufficient

current

operate

the

particular

GRC

Relay

for

all

pickup

settings

See

Table

for

listing

TMS

Monitors

Table

also

indicates

the

range

current

drain

expected

for

each

model

The

control

transformer

must

provide

this

current

The

actual

value

current

drawn

will

depend

the

particular

sensor

being

used

the

system

and

the

line

voltage

TABLE

SUMMARY

COMMON

UNITS

Monitor

Catalog

Number

Sensor

Test

Drain

Auxi

iary

Contact

For

Use

GRC

Range

Monitor

Type

202

TMC

Yes

202

0.2

TMS

Yes

0.2

0.4

202

Yes

202

240

0.7

Yes

202

100

1200

Yes

The

the

above

catalog

numbers

MUST

replaced

with

the

proper

digit

These

are

IMPORTANT

dicating

the

main

control

voltage

value

completely

specify

the

unit

for

125

VDC

“

for

VDC

“

for

120

VAC

“

for

VDC

1 1

Test

current

drain

shown

exists

For

the

Type

TMS

the

sensor

test

voltage

source

always

120

VAC

only

during

operation

the

Sensor

Test

(

should

seconds

duration

)

4.00

3.625

0.1875

0.625

1.812

(

)

Fig

Panel

Cutout

for

FLUSH

MOUNTED

MONITOR

(

dimensions

inches

)

2.50

4.875

5.00

2.50

v O

(

)

0.1563

0.188

mounting

holes

0.0625

Courtesy of NationalSwitchgear.com

7.1

1.7

PAGE

GROUND

FAULT

MONITOR

OPERATION

The

CONTROL

POWER

light

should

normally

lit

indicating

the

availability

control

power

off

control

power

fuses

wiring

should

checked

the

control

power

transformer

the

load

side

the

circuit

protective

device

the

light

will

not

until

the

discon

nect

closed

Should

the

light

burned

out

easily

replaced

Upon

ground

fault

test

operation

the

FAULT

indicator

will

change

state

orange

and

the

optional

auxiliary

contact

(

provided

)

will

pick

and

seal

The

GRC

Ground

Fault

Relay

thyristor

(

SCR

)

output

restored

functional

status

upon

the

opening

the

circuit

protective

device

auxiliary

contact

(

)

and

does

not

require

manual

reset

The

FAULT

target

memory

type

and

will

retain

its

indication

even

the

control

power

transformer

the

load

side

the

disconnect

thus

resulting

loss

control

power

upon

operation

The

RESET

pushbutton

resets

the

target

and

the

auxiliary

contact

(

provided

)

Reclosing

fault

may

increase

arcing

damage

;

therefore

recommended

that

ground

fault

condition

located

and

corrected

before

the

disconnect

reclosed

The

types

TMC

and

TMS

Monitors

allow

GRC

Relay

testing

with

without

tripping

the

circuit

disconnect

device

For

the

Type

TMS

actuation

the

TEST

switch

disconnects

one

several

sensor

windings

from

parallel

arrangement

and

connects

120

VAC

source

through

resistors

which

set

the

test

current

level

The

test

sequence

which

also

printed

the

front

panel

the

monitor

1 1

FOR

TRIP

TEST

FOR

TRIP

TEST

1 1

Operate

TRIP

switch

and

HOLD

Operate

TEST

switch

for

seconds

maximum

RELEASE

Operate

TEST

switch

for

seconds

maximum

Press

target

RESET

button

RELEASE

TRIP

switch

Press

RESET

button

the

relay

monitor

oper

not

hold

the

TEST

switch

for

than

seconds

CAUTION

ation

improper

recheck

wiring

voltages

and

interconnected

devices

before

resuming

tests

NOTE

Control

power

must

present

reset

the

target

DOUBLE

ENDED

APPLICATIONS

verify

the

operation

the

GRC

Relay

Trip

Interlock

used

the

main

breakers

double

ended

applications

the

following

procedure

may

used

the

interlocking

device

the

tie

circuit

breaker

temporarily

short

circuit

GRC

Relay

terminals

and

Perform

the

TRIP

TEST

The

relay

should

NOT

trip

terminals

and

were

shorted

run

the

test

SURE

remove

the

short

the

end

the

tests

Courtesy of NationalSwitchgear.com

I B

7.1

1.7

1 0

PAGE

GROUND

FAULT

MONITOR

(

)

DIA

MTG

HOLES

HARDWARE

]

“

irnrju

TBI

REAR

VIEW

SIDE

VIEW

FRONT

VIEW

FIGURE

TMC

MONITOR

OUTLINE

Dimensions

Inches

HEAT

SINK

HAROWARE

)

(

DIA

MTG

HOLES

Tfl

}

(

1 0

]

1 2

TBI

•

—

REAR

VIEW

SIDE

VIEW

FRONT

VIEW

FIGURE

TMS

MONITOR

OUTLINE

Courtesy of NationalSwitchgear.com

7.1

1.7

PAGE

GROUND

FAULT

MONITOR

GRC

RELAY

TMC

MONITOR

INTERCONNECTION

DIAGRAMS

Notes

for

Figures

and

terminal

provided

the

type

sensor

jumper

(

)

required

Wiring

earlier

versions

the

TMC

catalog

numbers

302

3010

and

302

3214

slightly

different

than

shown

below

See

note

under

MAINTENANCE

Page

ItO

VAC

DOUBLE

)

—

sue

TJjg

BftC

THY

110

•

;

(

PIE

TEST

’

SENSOR

mart

112

—

TRIP

—

OPTIONAL

LOAD

FIGURE

GRC

TMC

with

120

VAC

Control

Power

)

CONTROL

PWR

OOUBLE

—

ENO

SUB

TIE

—

TMC

)

THY

110

TRIP

;

„

’

(

TEST

SENSOR

RESET

TRIP

—

OPTIONAL

LOAD

FIGURE

GRC

TMC

Control

Power

•

)

Courtesy of NationalSwitchgear.com

120

VAC

DOUBLE

END

TIE

SUB

)

CRT

THY

REMOVE

LINK

110

250

]

LARGER

(

SENSOR

302

TEST

SET

302

—

TRIP

OPTIONAL

LOAD

)

526

TCJ

GRD

FIGURE

GRC

TMS

WITH

120

VAC

CONTROL

AND

120

VAC

TEST

POWER

—

•

cry

Courtesy of NationalSwitchgear.com

120

VAC

TEST

PWR

{

)

CONTROL

PWR

DOUBLE

END

—

TIE

SUB

TMS

)

CPT

THY

lie

REMOVE

LINK

110

250

TRIP

ill

LARGER

(

SENSOR

302

TEST

302

TRIP

—

OPTIONAL

LOAD

(

)

(

)

(

)

GRD

•

FIGURE

GRC

TMS

WITH

CONTROL

POWER

AND

120

VAC

TEST

POWER

—

Courtesy of NationalSwitchgear.com

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