GE MicroVersaTrip Manuale utente

GEH

4657

Instructions

MicroVersaTrip

Programmer

For

Circuit

Breakers

150

4000

Amperes

;

480

600

240

’

‘

Sir

ELECTRIC

GENERAL

Courtesy of NationalSwitchgear.com

INTRODUCTION

TRIPPING

FUNCTIONS

Micro

VersaTrip

the

second

generation

solid

stale

programmers

compact

unit

offers

increased

flexibility

functions

than

VersaTrip

Selectrip

The

Micro

VersaTrip

programmers

current

transformers

and

flux

shifters

are

not

compatible

with

the

VersaTrip

Selectrip

programmers

current

transformers

and

flux

shifters

Interchangeable

trip

Micro

VersaTrip

programmers

are

available

both

four

function

and

nine

function

version

General

Description

Current

Setting

Standard

Long

Time

Pickup

Optional

(

Cat

Suffix

“

”

)

Long

Time

Delay

Standard

(

Optional

Functic

Version

)

Long

Time

Pickup

Light

Standard

Short

Time

Pickup

Optional

(

Cat

Suffixes

“

”

)

Adjustable

Short

Time

Delay

Optional

(

Cat

Suffix

“

”

)

Fixed

Short

Time

Delay

Optional

(

Cat

Suf

“

”

)

Short

Time

Switch

Optional

(

Cat

Suffi

“

”

)

Instantaneous

Pickup

Standard

Fixed

Instantaneous

Override

Optional

(

Cat

Suffixes

“

”

“

”

)

Ground

Fault

Pickup

Optional

(

Cat

Suffixe

“

”

“

”

)

Ground

Fault

Delay

Optional

(

Cat

Suffixe

“

”

“

”

)

Adjustable

High

Range

Instantaneous

Option

(

Cat

Suffix

“

”

)

Fault

Trip

Annunciators

Optional

(

Cat

fixes

“

”

“

”

“

”

and

“

)

Zone

Selective

Interlock

Optional

(

Cat

fixes

“

”

“

”

and

“

”

The

quantity

above

functions

any

given

breaker

determine

complete

catalog

number

These

programmers

can

installed

with

few

limitations

circuit

breakers

with

the

following

frame

designations

“

”

Molded

Case

Circuit

Breaker

THJ

“

”

Molded

Case

Circuit

Breakers

THK

PowerBreak

Circuit

Breakers

Circuit

Breakers

TPVV

THPVV

AKR

AKRT

AKR

100

Programmers

with

remote

target

indicator

are

not

inter

changeable

between

circuit

breaker

frames

Programmer

Rejection

System

The

programmer

and

breaker

frames

have

rejection

system

which

prevents

programmers

with

the

instan

taneous

function

from

being

used

standard

breaker

frames

Programmers

with

the

suffix

“

”

(

instan

taneous

function

)

are

compatible

with

breakers

only

and

not

the

Molded

Case

Power

Break

lines

breakers

addition

programmers

for

breakers

rated

2000

amperes

and

lower

are

not

interchangeable

with

breakers

rated

2500

amperes

and

above

DETAILED

DESCRIPTION

Current

Setting

Current

Setting

the

value

current

breaker

will

carry

indefinitely

without

tripping

This

value

current

the

nomina

nameplate

sensor

ampere

rating

the

senso

tap

rating

the

breaker

terms

per

cent

The

range

values

100

Long

Time

Pickup

The

primary

function

the

long

time

pickup

allow

precise

matching

the

current

set

ting

and

the

breaker

load

requirements

long

time

pick

setting

may

changed

fron

110

the

current

setting

four

equa

steps

each

the

long

time

pickup

decreased

from

110

the

current

setting

the

long

tim

delay

band

selected

extended

lower

cur

rents

and

longer

times

The

other

functions

arr

not

affected

Long

Time

Delay

Trip

Bands

Long

Time

delay

trip

bands

provide

the

functior

withstanding

temporary

overloads

such

motor

starting

welding

other

overcurrent

con

ditions

without

interrupting

service

The

purpose

the

time

delay

bands

provid

further

degrees

coordination

and

selective

within

system

The

delay

bands

provide

creasing

times

trip

any

fixed

overload

cur

rent

ratios

for

adjacent

bands

The

bands

are

marked

follows

Courtesy of NationalSwitchgear.com

Ground

Fault

Pickup

Settings

are

adjustable

with

setting

ceeding

1200

amperes

comply

with

National

Electrical

Code

Section

230

These

settings

are

the

following

multiples

Sensor

Ampere

Rating

;

150

2000

2500

3000

4000

Ground

Fault

Delay

The

time

delay

setting

for

ground

fault

interrup

tion

provides

tripping

selectivity

for

main

and

feeder

breakers

The

time

delay

follows

slope

and

then

terminates

three

fixed

time

delay

bands

follows

Minimum

Delay

Intermediate

Delay

Maximum

Delay

Adjustable

High

Range

Instantaneous

The

high

range

instantaneous

provides

protec

tion

and

coordination

levels

the

full

short

time

rating

the

circuit

breaker

The

high

range

instantaneous

adjustable

from

100

the

short

time

rating

four

steps

each

Fault

Trip

Annunciators

The

primary

function

the

mechanical

pop

out

type

fault

indicators

identify

the

type

overcurrent

fault

(

overload

short

circuit

ground

fault

)

responsible

for

tripping

the

breaker

Remote

fault

indication

available

the

form

one

contact

per

indicator

Zone

Selective

Interlock

The

Zone

Selective

Interlock

system

allows

the

breaker

sensing

the

fault

trip

immediately

also

sends

out

signal

which

inhibits

tripping

“

upstream

”

breakers

the

fault

not

cleared

the

“

downstream

”

breaker

then

the

“

upstream

”

breakers

respond

the

fault

timed

tripping

according

the

settings

the

time

delay

bands

Continuous

Current

Ratings

150

4000

Ampere

Typical

Time

Delay

600

Device

Setting

Band

Seconds

Long

Time

Pickup

Light

Whenever

the

current

reaches

exceeds

the

long

time

pickup

point

set

the

breaker

light

emiting

diode

(

LED

)

illuminated

and

remains

for

the

duration

the

overload

period

This

available

local

only

local

and

remote

modes

Short

Time

Pickup

The

primary

function

the

short

time

pickup

allow

the

breaker

carry

high

level

overload

currents

for

short

period

time

This

feature

again

provide

further

degrees

selectivity

within

system

Short

time

trip

settings

are

the

following

multiples

the

Current

Setting

(

Item

)

;

150

4000

1.5

2.5

Adjustable

Short

Time

Delay

The

adjustable

short

time

delay

provides

fur

ther

refinement

coordination

between

and

“

downstream

breakers

which

have

the

same

short

time

trip

settings

Three

steps

selectivity

are

provided

Minimum

Delay

Intermediate

Delay

Maximum

Delay

Fixed

Short

Time

Delay

The

short

time

delay

determined

the

characteristic

and

non

adjustable

The

time

delays

get

shorter

with

increasing

overload

Short

Time

Switch

This

switch

allows

the

selection

the

slope

short

time

delay

characteristic

the

constant

short

time

delay

bands

Instantaneous

Pickup

The

instantaneous

setting

provides

immediate

(

intentional

time

delay

)

interruption

severe

overloads

thereby

minimizing

damage

the

system

equipment

The

trip

point

justable

and

expressed

multiples

Sensor

Ampere

Rating

;

150

2500

1.5

3000

4000

1.5

2.5

Fixed

Instantaneous

Override

fixed

instantaneous

trip

provided

circuit

breakers

ordered

with

short

time

delay

and

adjustable

instantaneous

trip

These

settings

are

the

following

multiples

Sensor

Ampere

Rating

;

150

2000

2500

3000

4000

Seconds

(

»»

upstream

circuit

Seconds

Mounting

Neutral

Current

Transformer

(

Required

wire

system

the

programmer

has

the

ground

fault

detection

option

)

the

load

circuit

does

not

include

neutral

(

for

ample

phase

wire

)

the

neutral

terminals

the

circuit

breaker

should

left

open

and

neutral

not

used

(

NOT

“

short

”

terminals

)

When

neutral

included

the

load

circuit

neutral

markings

line

and

load

must

respected

when

making

bus

cable

connections

The

polarity

connecting

wires

from

secondary

neutral

circuit

breaker

must

also

respected

white

black

The

neutral

can

only

used

with

static

breaker

same

ampere

rating

Courtesy of NationalSwitchgear.com

Ground

Return

“

”

Suffix

MicroVersaTrip

Circuit

Breakers

SOURCE

MAM

Ilf

Tli

121

NfVTRA

LOAD

CCMN

•

LOAD

[

ICUTlAl

LOAD

CONN

NSUTRAl

LOAD

CONN

NEUTRAL

LOAD

CONN

BUS

VlC

{

•

FIG

—

Double

Ended

Switchboard

with

MicroVesaTrip

Ground

Fault

Protection

—

Mains

and

Tie

Tripped

for

GFP

FIG

—

Double

Ended

Switchboard

with

MicroVersaTrip

Ground

Fault

Protection

—

Mains

Only

Tripped

for

GFP

WIRING

Mains

Tripped

Mains

Only

Tripped

Condition

Connect

wiring

from

sensor

breaker

black

and

white

using

twisted

pair

AWG

minimum

Belden

8640

8470

equal

Ground

Fault

Protection

GFP

Schemes

There

are

two

GFP

schemes

that

can

used

with

phase

wire

double

ended

equipment

the

first

method

shown

Fig

the

two

main

breakers

and

the

tie

breaker

are

provided

with

MicroVersaTrip

ground

fault

protection

the

second

method

shown

Fig

the

main

breakers

only

are

provided

with

MicroVersaTrip

ground

fault

protection

and

the

tie

breaker

not

tripped

for

GFP

The

most

selective

tripping

provided

when

all

three

breakers

are

equipped

with

GFP

(

Fig

)

See

com

parison

the

two

schemes

the

table

below

The

two

MicroVersaTrip

GFP

schemes

described

here

are

applicable

phase

wire

double

ended

equip

ment

where

the

system

will

not

operated

with

all

three

breakers

closed

MicroVersaTrip

GFP

MicroVersaTrip

GFP

Mains

closed

tie

open

Main

that

supplies

the

faulted

bus

will

open

other

main

stays

closed

Main

that

supplies

the

faulted

bus

will

open

other

main

stays

closed

ground

fault

load

side

tie

the

tie

will

open

and

main

stays

closed

ground

fault

line

side

tie

both

main

and

tie

will

open

One

main

and

tie

closed

other

main

open

Main

that

supplies

both

buses

will

open

for

ground

fault

either

bus

Neutral

Load

Current

double

ended

switchboard

when

one

main

oper

and

the

tie

closed

neutral

load

current

can

flov

through

the

two

neutral

sensors

The

sensor

circuitry

shown

Fig

arranged

prevent

neutral

load

current

from

actuating

the

ground

fault

trip

units

GFP

Settings

When

mains

and

tie

have

MicroVersaTrip

grounc

fault

protection

set

tie

breaker

delay

time

MINIMUN

(

0.2

sec

)

Set

main

breaker

delay

time

TERMEDIATE

(

0.3

sec

)

order

obtain

selectivity

between

the

mains

and

tie

When

mains

only

have

MicroVesaTrip

ground

fauf

protection

set

delay

time

MINIMUM

(

0.2

sec

)

unlest

longer

time

needed

order

coordinate

with

othei

ground

fault

relays

downstream

devices

Current

pickup

settings

(

trip

point

)

should

determin

system

study

but

the

absence

other

infor

mation

set

trip

point

0.4

each

breaker

(

1100

foi

3000

and

4000

frame

sizes

)

MicroVersaTrip

GFP

utilizes

internal

tripping

power

derived

from

the

flow

phase

current

through

the

phase

sensors

develop

this

tripping

power

minimum

rated

sensor

current

must

car

ried

the

breaker

Under

balanced

load

conditions

double

ended

arrangement

with

mains

and

tie

closed

tie

breaker

might

not

carry

enough

current

develop

tripping

power

for

ground

fault

tripping

the

tie

When

double

ended

equipment

subject

operating

with

all

three

breakers

closed

reliable

GFP

can

tained

using

Ground

Break

relay

trip

the

tie

combination

with

MicroVersaTrip

mains

The

tie

can

either

standard

breaker

MicroVersaTrip

with

shunt

trip

accessory

1983

GENERAL

ELECTRIC

COMPANY

For

further

information

call

write

your

local

General

Electric

Sales

Office

...

General

Electric

Distribution

Equipment

Woodford

Avenue

Plainville

06062

These

instructions

not

purport

cover

all

details

variations

equipment

nor

provide

for

every

possible

contingency

met

connection

with

installation

operation

maintenance

Should

further

information

desired

should

partic

ular

problems

anse

which

are

not

covered

sufficiently

for

the

purchaser

pur

poses

the

matter

should

referred

the

General

Electric

Company

ELECTRIC

GENERAL

GEH

4657

Courtesy of NationalSwitchgear.com

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