Cutler-Hammer Digitrip RMS 610 Manual de usuario

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886

Cutler

Hammer

Instructions

for

Digitrip

RMS

610

Trip

Unit

RESULT

FROM

CONTACT

WITH

ENERGIZED

EQUIP

MENT

ALWAYS

VERIFY

THAT

VOLTAGE

PRESENT

BEFORE

PROCEEDING

WITH

THE

TASK

AND

ALWAYS

GENERALLY

ACCEPTED

SAFETY

PROCEDURES

CUTLER

HAMMER

INC

NOT

LIABLE

FOR

THE

MISAPPLICATION

MISIN

STALLATION

ITS

PRODUCTS

strongly

urged

that

the

user

observe

all

recommen

dations

warnings

and

cautions

relating

the

safety

personnel

and

equipment

well

all

general

and

local

health

and

safety

laws

codes

and

procedures

The

recommendations

and

information

contained

herein

are

based

experience

and

judgment

but

should

not

considered

all

inclusive

covering

every

appli

cation

circumstance

which

may

arise

you

have

any

questions

need

further

information

instructions

please

contact

your

local

representative

the

Customer

Support

Center

for

the

type

circuit

breaker

you

have

Circuit

Breaker

Type

DSL

SPB

Series

Frame

Page

Table

Contents

1.0

General

Description

RMS

610

Trip

Unit

System

...

1.1

Basic

RMS

610

Trip

Unit

1.1

Operational

Status

and

TRIP

Indicators

1.1

General

Over

Current

Protection

1.1

Discriminator

(

Making

Current

Release

)

1.1

OverRIDe

(

Fixed

Instantaneous

)

TRIP

1.1

Zone

Interlocking

1.2

Four

Character

Information

Display

Window

1.2

Values

Displayed

During

Normal

Service

1.2

Messages

for

ALARM

TRIP

Conditions

1.2

2.1

“

ROM

Error

...

See

”

1.3

Rating

Plugs

Frame

Ratings

Sensor

Ratings

1.4

Power

Relay

Module

1.5

Auxiliary

Power

Module

2.0

Listed

Devices

3.0

Protection

Settings

3.1

General

3.2

Long

Delay

Current

Setting

3.3

Long

Delay

Time

Setting

3.4

Short

Delay

Current

Setting

3.5

Short

Delay

Time

Setting

3.6

Instantaneous

Current

Setting

3.7

Instantaneous

Current

Setting

3.8

Ground

Fault

Current

Setting

3.9

Ground

Fault

Time

Delay

Setting

4.0

Test

Procedures

4.1

General

4.2

When

Test

4.3

Testing

Provisions

4.4

Conducting

Tests

4.4

Not

Tripping

the

Breaker

4.4

Tripping

the

Breaker

4.5

Testing

Back

Battery

Inside

Rating

Plug

4.5

Back

Battery

Check

4.5

Replacing

the

Back

Battery

5.0

References

5.1

Digitrip

RMS

Trip

Unit

Assemblies

5.2

DSL

Low

Voltage

Power

Ckt

Breakers

....

5.3

SPB

Systems

Pow

Circuit

Breakers

5.4

Series

Frame

Molded

Case

Ckt

Breakers

...

Lists

Figures

Tables

and

Appendices

Send

Call

FAX

Telephone

Number

(

412

)

937

6029

(

412

)

937

6029

(

412

)

937

6490

Number

(

412

)

937

6396

(

412

)

937

6396

(

412

)

937

6010

1.0

GENERAL

DESCRIPTION

DIGITRIP

RMS

610

TRIP

UNIT

1.1

Basic

Digitrip

RMS

610

Trip

Unit

The

Digitrip

RMS

610

illustrated

Fig

Trip

Unit

suitable

for

use

types

and

DSL

Low

Voltage

power

circuit

breakers

and

type

SPB

Systems

Pow

cir

cuit

breakers

and

Series

Frame

molded

case

circuit

breakers

The

Digitrip

RMS

610

Trip

Unit

provides

four

basic

functions

Function

Protection

Information

Monitors

Current

Testing

Digitrip

RMS

610

provides

true

RMS

current

sensing

for

proper

correlation

with

thermal

characteristics

conduc

tors

and

equipment

Interchangeable

rating

plugs

are

provided

establish

the

continuous

current

rating

Section

1.1

and

1.1

and

1.2

WARNING

NOT

ATTEMPT

INSTALL

PERFORM

MAIN

TENANCE

EQUIPMENT

WHILE

ENERGIZED

DEATH

SEVERE

PERSONAL

INJURY

CAN

;

Effective

May

1997

Supersedes

886

dated

September

1994

Courtesy of NationalSwitchgear.com

886

Page

each

circuit

breaker

The

Digitrip

RMS

610

Trip

Unit

designed

for

use

industrial

circuit

breaker

environ

ments

where

the

ambient

temperatures

can

range

from

and

rarely

exceed

however

temperatures

the

neighborhood

the

Trip

Unit

exceed

this

range

the

Trip

Unit

performance

may

degraded

order

insure

that

the

tripping

function

not

compromised

due

over

temperature

condition

the

Digitrip

RMS

610

microcomputer

chip

has

built

over

temperature

protection

feature

factory

set

trip

the

breaker

the

chip

temperature

exceeds

over

temperature

the

reason

for

the

trip

the

Long

Delay

Time

LED

will

light

“

RED

”

and

the

word

“

TEMP

”

will

appear

the

display

window

The

Trip

Unit

employs

the

Cutler

Hammer

Inc

custom

designed

integrated

circuit

chip

which

includes

micro

computer

perform

its

numeric

and

logic

functions

The

principle

operation

described

the

block

diagram

shown

Fig

the

Digitrip

RMS

610

Trip

Unit

all

required

sensing

and

tripping

power

operate

its

protection

function

derived

from

the

current

sensors

the

circuit

breaker

The

secondary

currents

from

these

sensors

provide

the

correct

input

information

for

the

protection

functions

well

tripping

power

whenever

the

circuit

breaker

carrying

current

These

current

signals

develop

analog

voltages

across

the

appropriate

calibrating

resistors

including

)

Phase

currents

)

Ground

current

Neutral

current

(

when

supplied

)

Rating

plug

The

resulting

analog

voltages

are

digitized

the

custom

designed

integrated

circuits

The

micro

computer

cyclic

fashion

repeatedly

scans

the

voltage

values

across

each

calibrating

resistor

and

enters

these

values

into

its

Random

Access

Memory

(

RAM

)

These

data

are

used

calculate

true

RMS

current

values

which

are

then

repeatedly

compared

with

the

protection

function

settings

and

other

operating

data

stored

the

memory

The

software

program

then

determines

whether

initiate

protection

functions

including

tripping

the

breaker

through

the

low

energy

trip

device

(

Flux

Transfer

Shunt

Trip

Direct

Trip

Actuator

)

the

circuit

breaker

1.1

Operational

Status

and

Protection

TRIP

Indicators

The

“

Green

”

Light

Emitting

Diode

(

LED

)

the

lower

right

corner

the

Trip

Unit

(

Fig

)

“

blinks

”

once

each

second

indicate

the

Trip

Unit

operating

normally

Note

the

LED

steadily

“

GREEN

”

not

blink

ing

the

Trip

Unit

not

ready

Check

the

120

VAC

control

power

the

Power

Relay

Module

the

LED

not

blinking

(

See

Section

1.4

)

The

LEDs

shown

Figs

and

3.1

thru

3.6

the

face

the

Trip

Unit

light

“

RED

”

indicate

the

reason

for

any

automatic

trip

operation

indicated

Figs

3.1

3.6

each

LED

strategically

located

the

segment

the

time

current

curve

depicted

the

face

the

Trip

Unit

The

reason

for

trip

identified

the

segment

the

time

current

curve

where

the

LED

lighted

“

RED

”

and

shown

the

“

code

”

the

Display

Following

automatic

protection

trip

operation

the

external

control

power

the

Power

Relay

Module

(

See

Section

1.4

)

will

maintain

the

LED

“

RED

”

and

will

continue

send

TRIP

signal

LOCKOUT

the

circuit

breaker

until

the

Trip

Unit

RESET

The

Digitrip

RMS

610

Trip

Unit

can

RESET

pressing

and

releasing

the

“

TRIP

RESET

”

button

(

See

Fig

lower

right

corner

just

above

the

“

UNIT

STATUS

”

LED

)

the

event

that

control

power

lost

the

back

battery

the

Rating

Plug

(

See

Section

1.3

and

Figs

and

)

continues

supply

power

the

LEDs

check

the

sta

tus

the

battery

see

Section

4.5

Note

The

Digitrip

RMS

610

performs

all

its

protec

tion

functions

regardless

the

status

the

battery

The

battery

serves

only

maintain

the

indication

the

reason

for

automatic

trip

Press

and

release

the

“

TRIP

RESET

”

push

button

shown

Fig

turn

“

Off

”

the

LEDs

following

trip

operation

1.1

General

Over

Current

Protection

The

Digitrip

RMS

610

Trip

Unit

completely

self

con

tained

and

when

the

circuit

breaker

closed

requires

external

control

power

operate

its

protection

sys

tems

operates

from

current

signal

levels

and

control

power

derived

through

current

sensors

integrally

mounted

the

circuit

breaker

The

Digitrip

RMS

610

Trip

Unit

available

six

different

types

Each

Trip

Unit

may

equipped

with

maximum

five

phase

and

two

ground

(

time

current

)

settings

(

See

Section

)

meet

specific

application

requirements

The

protection

available

for

each

type

summarized

Table

and

illustrated

Figures

3.1

through

3.6

Effective

Courtesy of NationalSwitchgear.com

886

Page

Fig

Digitrip

RMS

610

Trip

Unit

Type

LSIG

with

Rating

Plug

ants

;

MOAJI

Umtt

‘

’

•

OfMK

UNF

uPPFK

»»

ort

’

•

rjv

•

Trip

ActiMHo

DIA

Ara

Ofl

OvarrvJr

TnpC

cmt

•

ugtHi

•

RED

lfVJK

CAUIB

LOCAI

Front

Pjn

;

’

Section

Circww

Custom

Designed

RtllAfi

Inieg

aiefl

Circun

Connector

««

•

TtfMJW

rtka

Gfouivr

Cafibctfwi

SpRE

Chip

—

fon

•

(

•

coad

CeAfar

Giuw

fowrt

Tne

Comae

’

•

AUl

Aij

UOAU

•

LOWFR

Volt

Luni

Pow

Reia

Modufci

«»

Sact

Fig

RMS

Digitrip

610

Trip

Unit

Block

Diagram

;

Effective

Courtesy of NationalSwitchgear.com

886

Page

Protection

Functions

Type

Figure

Discriminator

will

trip

the

circuit

breaker

instantaneously

the

“

OVERRIDE

DIS

”

LED

will

light

“

RED

”

and

the

Dis

play

will

read

“

DISC

”

the

event

the

breaker

not

intended

trip

out

circuit

whose

current

could

initially

higher

than

1 1

possible

make

the

Discriminator

inactive

circuit

breaker

would

onto

high

short

circuit

current

when

the

Discriminator

inactive

type

LSG

Trip

Units

will

wait

for

the

short

time

delay

setting

before

tripping

the

fault

current

exceeds

the

short

time

withstand

current

capability

the

circuit

breaker

the

OverRIDe

protection

function

will

trip

the

breaker

without

delay

(

See

Section

1.1

)

Also

please

see

Section

1.1

for

other

exceptions

when

Zone

Interlocking

employed

The

Discriminator

(

high

initial

current

release

)

can

made

inactive

turning

the

“

OVERRIDE

”

setting

switch

(

nearest

the

bottom

edge

the

Trip

Unit

)

from

the

“

DIS

”

position

the

“

[

blank

]

”

position

(

See

Figs

3.2

and

3.5

)

Notes

This

switch

has

eight

(

)

positions

and

seven

(

)

the

positions

show

“

”

the

window

ONLY

ONE

position

shows

“

[

blank

]

”

When

the

“

OVERRIDET

window

shows

“

[

blank

]

”

the

only

fast

acting

high

short

circuit

protection

avail

able

the

OVERRIDE

(

Fixed

Instantaneous

)

(

See

Section

1.1

)

Long

Time

Instantaneous

Long

Time

Short

Time

Long

Time

Short

Time

Instantaneous

LSI

3.3

Long

Time

Instantaneous

Ground

LIG

3.4

Long

Time

Short

Time

Ground

Long

Time

Short

Time

Instantaneous

Ground

3.1

3.2

LSG

3.5

LSIG

3.6

NOTE

RMS

Digitrip

Type

and

LSI

Trip

Units

can

applied

pole

circuit

breakers

for

protection

the

neutral

circuit

the

circuit

breaker

wired

and

MARKED

for

NEUTRAL

PROTECTION

Refer

the

National

Electric

Code

for

appropriate

application

pole

breakers

NOTICE

AFTER

EACH

TRIP

OPERATION

THE

AUTOMATIC

LOCKOUT

AFTER

TRIP

FEATURE

THE

DIGITRIP

RMS

610

TRIP

UNIT

MAINTAINS

THE

CIRCUIT

BREAKER

“

TRIP

FREE

”

CONDITION

PRO

VIDED

120

VAC

CONTROL

POWER

REMAINS

AVAIL

ABLE

THE

POWER

RELAY

MODULE

THE

TRIP

UNIT

MUST

RESET

BEFORE

THE

CIRCUIT

BREAKER

CAN

CLOSED

AGAIN

THE

RESET

CAN

ACCOMPLISHED

PRESSING

AND

RELEASING

THE

“

TRIP

RESET

’

PUSH

BUTTON

(

SEE

FIG

)

After

over

current

trip

operation

the

following

informa

tion

stored

the

Trip

Unit

memory

•

the

cause

trip

•

the

values

currents

thru

the

breaker

time

trip

1.1

Discriminator

(

High

Initial

Current

Release

)

(

For

Types

and

LSG

Trip

Units

only

)

When

the

Digitrip

RMS

610

Trip

Unit

not

equipped

with

adjustable

instantaneous

protection

setting

types

LSG

Discriminator

circuit

(

high

initial

current

release

)

provided

The

non

adjustable

release

pre

set

eleven

(

)

times

the

installed

rating

plug

cur

rent

(

)

The

Discriminator

enabled

for

approximately

ten

(

)

cycles

following

the

initial

current

flow

through

the

circuit

breaker

provided

the

load

current

exceeds

approximately

the

circuit

breaker

frame

(

cur

rent

sensor

)

rating

Should

the

load

current

through

the

circuit

breaker

drop

less

than

the

value

the

release

will

reset

The

release

once

reset

will

remain

enabled

until

the

load

current

passing

through

the

circuit

breaker

has

exceeded

the

value

for

cycles

The

1.1

OVERRIDE

(

Fixed

Instantaneous

)

Each

Digitrip

RMS

610

Trip

Unit

has

Fixed

Instanta

neous

“

Override

”

analog

trip

circuit

automatically

pre

set

value

greater

than

the

short

time

withstand

cur

rent

rating

the

circuit

breaker

which

the

Trip

Unit

installed

Since

the

specific

values

vary

for

different

cir

cuit

breaker

types

and

ratings

refer

time

current

curves

listed

Section

for

the

values

applicable

your

breaker

trips

due

high

instantaneous

current

the

“

OVERRIDE

”

LED

will

light

“

RED

”

and

the

display

will

read

“

ORID

”

;

Effective

Courtesy of NationalSwitchgear.com

886

Page

TABLE

DIGITRIP

RMS

610

PROTECTION

FUNCTIONS

Trip

Unit

TYPE

RMS

DIGITRIP

610

Refer

Section

Number

Catalog

Number

Suffix

Number

Instruction

Leaflet

886

Long

Time

Delay

Protection

Adj

Current

Setting

(

Pick

)

Adj

Time

Delay

Setting

Long

Time

Memory

XXX

3.2

3.3

High

Load

Alarm

ALARM

Indication

Trip

Unit

Remote

ALARM

Signal

Contacts

XXX

Table

1.3

Short

Time

Delay

Protection

Adj

Current

Setting

(

Pick

)

Adj

Time

Delay

Setting

Opt

“

squared

Curve

Shape

Opt

Zone

Interlocking

3.4

3.5

1.1

Instantaneous

Protection

Adj

Current

Setting

(

Pick

)

DISCriminator

(

)

OUT

OverRIDe

(

short

time

current

rating

)

3.6

1.1

Neutral

Current

Protection

111

Ground

Fault

Protection

Adj

Current

Setting

(

Pick

)

Adj

Time

Delay

Setting

Opt

“

squared

Curve

Shape

Opt

Zone

Interlocking

Ground

Fault

Time

Memory

XXX

3.8

3.9

1.1

3.9

Trip

Unit

Over

Temp

TRIP

XXX

1.1

Fig

3.1

Digitrip

RMS

610

Type

Auto

Lock

Out

after

TRIP

1.1

LED

Indicators

TRIP

Unit

Trip

Unit

Status

(

Blinking

)

Long

Time

Delay

TRIP

Short

Time

Delay

TRIP

XXX

1.1

INStantaneous

TRIP

OverRIDe

DISCriminator

TRIP

Ground

Fault

TRIP

1.1

XXX

1.1

XXX

Rating

Plug

Back

Battery

Status

XXX

4.5

XXX

Integral

Test

Provision

POWER

RELAY

MODULE

Output

Signal

Contacts

XXX

1.4

Long

Time

Delay

TRIP

XXX

1.4

Short

Circuit

TRIP

(

includes

any

)

•

Short

Time

Delay

TRIP

•

INStantaneous

TRIP

•

OverRIDe

DISCriminator

TRIP

XXX

1.4

Ground

Fault

TRIP

Neutral

Current

ALARM

High

LoaD

ALARM

XXX

1.4

XXX

1.4

Function

included

tor

this

trip

unit

120

VAC

Control

Power

required

maintain

Lockout

Circuit

Breaker

must

equipped

for

Neutral

Protection

“

DISCriminator

”

also

called

“

Making

Current

Release

tor

Type

Breakers

“

blank

Function

for

this

trip

unit

LEGEND

Fig

3.2

Digitrip

RMS

610

Type

Effective

Courtesy of NationalSwitchgear.com

886

Page

Fig

3.5

Digitrip

RMS

610

Type

LSG

Fig

3.3

Digitrip

RMS

610

Type

LSI

(

510

Catalog

Humttet

Littitam

Battry

Owy

;

Long

Delay

Time

Oetev

Sarong

Snort

Delay

Settrny

‘

rejNt

Trro

SFT

Iasi

Amps

Fault

Setting

•

Snert

Delay

CPC

Fast

Time

Fig

3.6

Digitrip

RMS

610

Type

LSIG

Fig

3.4

Digitrip

RMS

610

Type

LIG

Effective

Courtesy of NationalSwitchgear.com

886

Page

1.1

Zone

Interlocking

Zone

Selective

Interlocking

(

Zone

Interlocking

)

avail

able

(

See

Fig

)

for

Digitrip

RMS

Trip

Units

having

Short

Delay

and

Ground

Fault

protection

Zone

Selective

Interlocking

provides

the

fastest

possible

tripping

for

faults

within

the

breaker

’

zone

protection

and

yet

also

provides

positive

coordination

among

all

breakers

the

system

(

mains

ties

feeders

and

downstream

breakers

)

limit

the

outage

the

affected

part

the

system

only

When

Zone

Interlocking

enabled

fault

within

the

breaker

’

zone

protection

will

cause

the

Trip

Unit

•

Trip

the

affected

breaker

instantaneously

and

•

Send

signal

upstream

RMS

Digitrip

Trip

Units

restrain

from

tripping

immediately

The

restraining

signal

causes

the

upstream

breakers

their

set

coordination

times

that

only

the

minimum

ser

vice

disrupted

while

the

fault

cleared

the

shortest

time

possible

This

signal

requires

only

single

pair

wires

from

the

output

terminals

the

downstream

breaker

’

Trip

Unit

the

input

terminals

the

upstream

breaker

’

Trip

Unit

For

specific

instructions

see

the

applicable

connection

diagrams

for

your

breaker

listed

Section

Note

breaker

(

)

receives

Zone

Interlocking

signal

from

another

breaker

(

)

that

tripping

but

the

fault

current

level

less

than

the

setting

for

breaker

(

)

the

presence

the

Zone

Interlocking

signal

from

the

other

breaker

(

)

can

not

cause

breaker

(

)

trip

1.2

Values

Displayed

During

Normal

Service

The

alpha

numeric

display

window

provides

current

val

ues

under

normal

service

conditions

and

coded

mes

sages

after

alarm

condition

after

over

current

trip

operation

The

four

“

Green

”

LEDs

below

the

display

window

indicate

which

value

current

being

dis

played

The

value

the

display

window

indicates

the

present

value

the

parameter

whose

LED

lighted

“

Green

”

Fig

the

four

“

Green

”

LEDs

identify

which

current

(

)

value

being

displayed

phase

current

(

)

phase

current

(

)

phase

current

(

)

ground

current

(

)

current

the

fourth

pole

(

neutral

)

(

)

During

the

normal

service

conditions

with

the

circuit

breaker

closed

the

Digitrip

610

serves

ammeter

displaying

the

individual

phase

currents

(

)

and

ground

current

(

)

the

fourth

pole

(

neutral

)

current

(

)

provided

the

circuit

breaker

set

for

ground

fourth

pole

protection

Current

values

are

displayed

The

value

displayed

current

the

pole

(

ground

)

indi

cated

the

“

Green

”

LED

that

turned

“

”

Press

and

release

the

(

Black

)

“

STEP

”

push

button

view

the

val

ues

current

the

other

phases

(

See

Fig

)

The

range

accuracy

and

wave

shape

parameters

for

current

values

displayed

are

RANGE

100

Frame

Rating

for

Series

Frame

Type

SPB

circuit

breakers

100

[

Current

]

Sensor

Rating

for

Type

circuit

breakers

ACCURACY

Frame

Rating

for

Series

Frame

Type

SPB

circuit

breakers

[

Current

]

Sensor

Rating

for

Type

circuit

breakers

WAVE

SHAPE

Sinusoidal

ref

IEC

947

Appendix

(

Harmonic

content

included

for

True

RMS

reading

)

1.2

Messages

Displayed

After

ALARM

TRIP

After

ALARM

condition

circuit

breaker

TRIP

opera

tion

occurs

one

the

coded

messages

listed

Table

will

appear

the

display

window

provided

control

power

still

available

for

the

Power

Relay

Module

(

See

Section

1.4

)

When

ALARM

condition

occurs

the

operator

has

time

take

action

such

reducing

the

load

correct

the

situation

The

message

will

remain

the

display

win

dow

until

the

“

STEP

”

push

button

(

See

Fig

)

pressed

and

released

then

the

message

will

disappear

and

the

values

currents

(

)

the

present

time

can

viewed

the

window

CAUTION

ZONE

INTERLOCKING

NOT

USED

(

STANDARD

TIME

DELAY

COORDINATION

ONLY

INTENDED

)

THE

ZONE

INTERLOCKING

TERMINALS

MUST

CONNECTED

WITH

JUMPER

WIRES

SPECIFIED

THE

CONNECTION

DIAGRAMS

FOR

YOUR

BREAKER

(

SEE

SECTION

)

THE

TIME

DELAY

SETTINGS

WILL

PROVIDE

THE

INTENDED

COORDINATION

For

examples

how

Zone

Selective

Interlocking

may

used

See

Appendix

Four

Character

Information

Display

Window

The

four

digit

alpha

numeric

display

window

illustrated

Figs

and

serves

two

basic

purposes

instrumenta

tion

and

mode

trip

and

trouble

indication

The

informa

tion

displayed

the

window

listed

Tables

and

1.2

Effective

Courtesy of NationalSwitchgear.com

886

Page

Note

Press

and

release

the

“

STEP

”

push

button

sev

eral

times

sure

you

see

the

values

all

the

cur

rents

The

first

value

you

see

may

not

the

greatest

Following

circuit

breaker

TRIP

operation

the

display

window

indicates

the

reason

for

trip

using

coded

mes

sages

such

INST

(

Instantaneous

Trip

)

LDT

(

Long

Delay

Trip

)

etc

with

the

ALARM

function

press

and

release

the

“

STEP

”

push

button

clear

the

reason

for

trip

message

and

the

display

window

will

then

show

the

values

current

the

time

trip

(

See

notes

(

)

(

)

and

(

)

under

Table

)

The

values

remain

memory

and

the

“

red

”

reason

for

Trip

LED

(

See

Figs

and

3.1

3.6

)

remains

lighted

until

the

Trip

Unit

reset

pressing

and

releasing

the

‘

TRIP

RESET

”

push

button

the

lower

right

corner

the

Trip

Unit

(

See

Fig

)

Note

sure

RECORD

all

values

interest

note

which

“

RED

”

LEDs

are

lighted

and

correct

the

cause

the

overload

fault

BEFORE

YOU

RESET

the

Trip

Unit

The

LOCKOUT

after

trip

feature

requires

the

Trip

Unit

reset

before

the

breaker

can

closed

again

For

examples

how

interpret

the

display

after

overload

and

after

short

circuit

see

Appendix

TABLE

DIGITRIP

RMS

610

INFORMATION

FUNCTIONS

Trip

Unit

TYPE

RMS

DIGITRIP

610

6 6 6

S S

6 6

S S

G G

Refer

Section

Number

Catalog

Number

Suffix

Number

Instruction

Leaflet

886

Character

LED

Display

XXX

1.2

Current

Values

1.2

Phase

Current

[

]

(

)

Phase

Current

[

]

(

)

Phase

Current

[

]

(

)

XXX

Ground

Current

[

]

(

)

Neutral

Current

[

]

(

)

XXX

1.2

Local

Messages

TABLE

DISC

DlSCrimmator

Trip

GNDT

GrouND

Trip

XXX

HILD

High

LoaD

Alarm

INST

INStantaneous

Trip

LDPU

Long

Time

Delay

Pick

U p

XXX

X X

XXX

LDT

Long

Time

Delay

Trip

ORID

OverRIDe

Trip

XXX

ORNG

OverRaNGe

Trip

PLUG

Rating

PLUG

Problem

SDT

Short

Time

Delay

Trip

XXX

TEMP

OverTEMPerature

Trip

TEST

ready

t o

begin

XXX

TABLE

LEGEND

Function

Included

Circuit

Breaker

must

equipped

for

Neutral

Protection

tor

Type

Breakers

1.2

2.1

ROM

Error

See

you

see

the

message

“

ROM

Error

...

See

”

scrolling

across

the

display

window

means

that

non

fatal

error

has

been

detected

somewhere

the

Trip

Unit

’

memory

The

condition

not

serious

and

the

Trip

Unit

will

still

function

protect

the

circuit

but

the

published

Time

Cur

rent

Curve

tolerances

may

exceeded

some

cases

much

not

necessary

trip

and

lock

out

the

breaker

;

however

the

Trip

Unit

should

replaced

the

earliest

opportunity

There

may

also

errors

values

current

displayed

and

they

could

even

greater

than

The

scrolling

message

will

not

remain

the

window

constantly

and

you

can

read

present

values

parameters

any

time

pressing

and

releasing

the

“

STEP

”

push

button

you

normally

would

The

message

will

automatically

reappear

every

few

minutes

and

further

every

time

you

press

and

release

the

“

TRIP

RESET

”

push

button

the

message

will

also

displayed

remind

you

replace

the

Trip

Unit

your

earliest

opportunity

Frame

Rating

Sensor

Rating

(

where

applica

ble

)

and

Rating

Plugs

The

Frame

Rating

circuit

breaker

the

maximum

RMS

current

can

carry

continuously

The

maximum

Short

Circuit

Current

Ratings

the circuit

breaker

are

usually

the

Frame

Rating

well

often

times

desirable

able

choose

current

value

(

)

less

than

the

full

frame

rating

the

basis

for

the

coordination

the

circuit

breaker

’

protection

functions

without

affecting

its

short

circuit

current

capa

bility

For

the

Digitrip

RMS

610

Trip

Unit

the

maximum

continuous

current

(

)

set

the

Rating

Plug

(

and

Current

Sensors

where

applicable

)

—

see

Section

for

specific

instructions

for

your

circuit

breaker

type

The

(

Current

)

Sensor

Rating

(

where

applicable

)

the

maximum

RMS

current

the

circuit

breaker

can

carry

with

the

specified

current

sensors

installed

The

Sensor

Rat

ing

can

the

same

less

than

the

Frame

Rating

but

not

greater

The

Rating

Plug

(

See

Fig

)

fits

into

special

cavity

complete

the

Trip

Unit

(

See

Fig

)

1.3

;

Effective

Courtesy of NationalSwitchgear.com

886

Page

TABLE

DIGITRIP

RMS

610

TRIP

UNIT

MESSAGE

CODES

AND

THEIR

MEANINGS

MESSAGE

MEANING

COMMENT

SEC

DISC

DISCriminator

Trip

(

High

Initial

Current

Release

)

GrouND

fault

Breaker

tripped

instantaneously

because

phase

current

exceeded

rating

plug

current

Value

Breaker

tripped

because

ground

current

exceeded

Ground

Fault

protection

settings

Phase

current

has

exceeded

Long

Time

Current

Setting

for

than

seconds

GNDT

HILD

High

LoaD

Alarm

ALARM

Nearing

Overload

Condition

App

Casei

INST

INStantaneous

Jripu

Breaker

tripped

instantaneously

because

phase

current

exceeded

instantaneous

protection

setting

Phase

current

has

exceeded

Long

Time

current

setting

Trip

unit

timing

trip

breaker

LDPU

Long

Time

Delay

Pick

ALARM

Overload

Condition

Progress

Long

Time

Delay

Trip

(

Overload

Trip

)

QverRIDe

Trip

3.2

LDT

Breaker

tripped

because

phase

current

exceeded

Long

Time

protection

settings

Breaker

tripped

instantaneously

because

phase

current

exceeded

short

time

rating

circuit

breaker

Breaker

tripped

instantaneously

because

phase

current

(

ground

current

)

exceeded

rating

plug

current

value

Rating

Plug

missing

damaged

not

well

connected

breaker

closed

will

trip

and

the

instantaneous

override

LED

will

light

breaker

open

will

not

Protection

functions

still

operate

but

may

out

tolerance

Replace

trip

unit

first

opportunity

Breaker

tripped

because

phase

current

exceeded

Short

Time

Delay

protection

settings

Breaker

tripped

because

ambient

temperature

SURE

chip

exceeded

degrees

Trip

Unit

test

will

begin

soon

you

release

the

push

test

button

and

“

TEST

message

will

disappear

The

breaker

will

trip

and

the

cause

trip

displayed

Trip

Unit

test

will

begin

soon

you

release

push

test

button

and

the

display

shows

the

elapsed

time

test

3.2

ORID

1.1

ORNG

Over

RaNGe

Trip

(

Current

too

high

measure

)

1.2

PLUG

Rating

PLUG

Problem

ROM

ERROR

Nonfatal

memory

error

1.2

SDT

Short

Time

Delay

Trip

TEMP

OverTEMPerature

Trip

TEST

and

trip

breaker

ready

begin

[

blank

]

Test

{

without

tripping

breaker

)

ready

begin

Control

power

out

Trip

unit

not

“

”

NOTES

the

case

high

level

fault

condition

where

fast

tripping

desirable

the

Trip

Unit

will

operate

before

complete

RMS

current

value

can

calculated

For

this

reason

the

displayed

value

may

less

than

the

actual

RMS

fault

current

the

case

very

high

fault

current

(

greater

than

)

the

message

“

ORNG

’

(

indicating

over

range

)

appears

because

the

Trip

Unit

cannot

determine

the

actual

value

the

fault

current

OverRIDe

(

Fixed

Instantaneous

)

Trip

for

type

and

LSG

Trip

Units

(

Instantaneous

element

)

circuit

breakers

whose

Short

Circuit

current

interrupting

capability

exceeds

their

Short

Time

Current

withstand

capability

(

See

Section

1.1

)

The

values

the

currents

displayed

after

TRIP

event

are

the

values

the

time

the

TRIP

operation

was

initiated

Although

the

magnitude

fault

current

for

example

can

continue

increase

after

the

TRIP

operation

initiated

those

values

current

occurring

after

the

TRIP

operation

initiated

are

not

displayed

plug

set

the

value

the

basis

for

the

Trip

Unit

protection

function

current

settings

(

See

Section

for

details

)

Each

circuit

breaker

frame

rating

represents

the

maximum

current

can

carry

continuously

However

for

proper

coordination

over

current

protection

often

desirable

choose

different

levels

for

different

cir

cuit

breakers

the

same

frame

rating

assortment

rating

plugs

with

different

values

available

for

each

breaker

frame

rating

(

See

circuit

breaker

instruction

leaf

let

supplements

listed

Section

)

give

the

user

flexi

bility

change

the

value

without

having

change

the

primary

current

sensors

the

breaker

changing

the

rating

plug

the

user

can

easily

change

the

range

current

protection

settings

without

having

remove

the

circuit

breaker

from

its

enclosure

CAUTION

BEFORE

YOU

FIT

THE

RATING

PLUG

INTO

THE

TRIP

UNIT

SURE

CHECK

THAT

THE

BREAKER

TYPE

AND

FRAME

RATING

(

SENSOR

RATING

APPLICABLE

)

MATCH

THOSE

PRINTED

THE

RATING

PLUG

COVER

INSTALLING

RATING

PLUG

THAT

DOES

NOT

MATCH

THE

BREAKER

TYPE

AND

FRAME

RATING

(

SENSOR

RATING

APPLICA

BLE

)

CAN

PRODUCE

SERIOUS

MISCOORDINATION

AND

FAILURE

THE

PROTECTION

SYSTEM

After

installing

the

Rating

Plug

press

and

release

the

“

TRIP

RESET

”

push

button

The

purpose

the

rating

;

Effective

Courtesy of NationalSwitchgear.com

886

Page

Fig

Rating

Plug

For

example

one

expects

circuit

carry

600

ini

tially

but

then

increase

1400

the

future

one

could

initially

install

1600

cables

and

1600

breaker

frame

with

the

Trip

Unit

rating

plug

whose

800

Then

later

when

the

additional

load

ready

come

line

the

rating

plug

could

exchanged

for

one

with

1600

without

having

remove

the

breaker

from

its

enclosure

The

available

settings

would

give

the

following

choices

Long

Delay

Setting

1.0

Plug

„

800

LDPU

400

480

560

640 680

720

760

800

Plug

„

1600

LDPU

800

960

1120

1280

1360

1440

1520

1600

Note

Rating

plugs

from

Digitrip

models

500

600

700

800

CANNOT

used

with

model

610

Trip

Units

The

connection

pins

are

located

different

posi

tions

one

cannot

accidentally

use

the

incorrect

type

plug

Rating

Plugs

for

the

Digitrip

RMS

610

Trip

Units

are

marked

for

and

may

applied

both

and

systems

Rating

plugs

have

two

current

ratings

listed

their

cov

ers

(

See

Fig

)

and

•

“

„

(

Rated

)

”

current

value

This

latter

value

(

)

the

basis

for

the

Trip

Unit

current

settings

•

The

Instantaneous

and

Ground

Current

Settings

(

applicable

)

are

multiples

(

)

(

See

Sections

3.6

and

3.8

)

•

The

Long

Delay

Current

Setting

multiple

(

)

Long

Delay

Current

Setting

(

)

(

See

Section

3.2

)

•

The

Short

Delay

Current

Setting

(

provided

)

multi

ple

which

turn

multiple

(

)

Short

Delay

Current

Setting

SDx

SDxLDx

(

)

(

See

Section

3.4

)

the

rating

plug

missing

not

well

connected

then

the

display

will

show

“

PLUG

”

and

the

instantaneous

override

LED

will

lighted

the

circuit

breaker

closed

will

trip

;

open

will

remain

trip

free

long

120

VAC

control

power

available

the

Power

Relay

Module

Even

control

power

lost

and

the

rating

plug

condition

not

corrected

soon

the

three

phase

current

through

the

circuit

breaker

reaches

(

single

phase

current

)

the

frame

current

sen

sor

rating

the

Trip

Unit

will

trip

the

breaker

again

indicated

Figs

and

back

battery

pro

vided

maintain

the

mode

trip

LED

indication

the

Digitrip

RMS

610

Trip

Unit

when

external

control

power

•

the

“

Must

Use

With

Frame

Rated

”

current

value

(

“

Sensor

Rated

”

applicable

)

Effective

Courtesy of NationalSwitchgear.com