GE MicroVersaTrip Plus User manual

MicroVersaTrip

Plus

and

Conversion

Kits

For

Type

Low

Voltage

Power

Circuit

Breakers

INTRODUCTION

Conversion

Kits

arc

designed

upgrade

existing

Low

Voltage

Power

Circuit

Breakers

rather

than

replacing

the

entire

breaker

The

Conversion

Kits

contain

enhanced

solid

state

MicroVersa

Trip

Plus

MicroVersaTrip

Trip

Units

representing

the

latest

technological

advancement

trip

systems

MicroVersaTrip

Plus

and

MicroVersaTrip

Conversion

Kits

are

designed

and

breaker

tested

conform

with

ANSI

Stan

dard

37.59

allowing

the

retrofittcr

properly

install

and

acceptance

test

the

breaker

This

publication

covers

installa

tion

MicroVersaTrip

Plus

and

Conversion

Kits

Type

Low

Voltage

Power

Cir

cuit

Breakers

Each

Conversion

Kit

contains

all

the

appropriate

material

convert

from

existing

electromechanical

trip

system

Courtesy of NationalSwitchgear.com

TABLE

CONTENTS

GENERAL

INFORMATION

SECTION

PRIOR

INSTALLATION

SECTION

DISASSEMBLING

THE

BREAKER

Front

and

Back

Frame

Separation

Metal

Breaker

Frames

Slate

Breaker

Frames

Trip

Paddle

Removal

Old

Trip

Unit

Removal

SECTION

INSTALLING

THE

CONVERSION

KIT

Installing

Phase

Sensors

(

’

)

Metal

Breaker

Frames

Slate

Breaker

Frames

Front

Back

Frame

Reassembly

(

Metal

Breaker

Frames

)

Front

Back

Frame

Reassembly

(

Slate

Breaker

Frames

)

Flux

Shifter

Programmer

Bracket

Installation

Metal

Breaker

Frames

Slate

Breaker

Frames

Programmer

Wiring

Harness

Communications

Harness

Programmable

Trip

Unit

SECTION

FOUR

WIRE

GROUND

FAULT

OPTION

TESTING

AND

TROUBLESHOOTING

Cabling

Diagram

SECTION

Courtesy of NationalSwitchgear.com

SECTION

GENERAL

INFORMATION

Whenever

the

ground

fault

trip

element

fur

nished

for

breakers

applied

wire

systems

note

that

associated

neutral

sensor

(

)

quired

for

separate

mounting

the

equipment

Make

sure

that

retrofitted

breakers

are

applied

within

their

short

circuit

ratings

For

example

when

the

breaker

’

trip

elements

are

changed

from

long

time

instantaneous

long

time

short

time

the

short

time

rating

would

gov

ern

the

application

service

consideration

the

installation

the

MicroVersaTrip

Plus

kit

provides

excellent

opportunity

perform

normal

mainte

nance

the

breaker

particularly

while

the

front

and

back

frames

are

separated

Such

procedures

are

described

installation

and

maintenance

manuals

normally

supplied

with

breakers

and

equipment

Conversion

kit

installation

straightforward

However

careful

workmanship

and

attention

these

instructions

should

maintained

Famil

iarity

with

the

breaker

will

prove

helpful

The

general

approach

first

strip

the

breaker

its

existing

trip

devices

and

then

install

the

program

mable

trip

unit

MicroVersaTrip

Plus

components

Following

this

the

converted

breaker

performance

tested

prior

being

restored

service

The

majority

breaker

kit

installations

not

quire

any

customized

assembly

work

However

some

conversions

may

involve

unusual

mounting

circumstances

accessory

combinations

which

necessitate

minor

modification

and

relocation

component

(

)

most

instances

this

supple

mentary

work

can

done

site

Preparatory

the

conversion

the

installer

should

verify

that

the

correct

kit

current

sensors

and

programmable

trip

unit

have

been

furnished

SECTION

PRIOR

INSTALLATION

•

Turn

off

and

lock

out

the

power

source

feed

ing

the

breaker

prior

attempting

any

installation

maintenance

modification

all

lockout

and

tagging

rules

the

National

Electrical

Code

and

all

other

appli

cable

codes

•

not

work

closed

breaker

with

the

closing

springs

charged

Trip

OPEN

the

breaker

and

sure

the

stored

energy

springs

are

discharged

avoiding

the

possibility

that

the

breakers

may

trip

OPEN

the

charg

ing

springs

discharge

causing

injuries

•

For

both

stationary

and

draw

out

breakers

trip

OPEN

then

remove

the

breaker

well

lighted

work

area

before

beginning

work

•

not

perform

any

maintenance

including

breaker

charging

closing

tripping

any

other

function

which

could

cause

significant

movement

the

breaker

while

the

draw

out

extension

rails

•

not

leave

the

breaker

intermediate

position

the

switchgear

compartment

ways

leave

the

CONNECTED

TEST

DISCONNECTED

position

Failure

could

lead

improper

positioning

the

breaker

and

flashback

Before

starting

any

work

turn

off

and

lock

out

all

power

sources

leading

the

breaker

(

primary

and

secondary

)

Remove

the

breaker

clean

well

lighted

work

area

WARNING

Low

Voltage

Power

Circuit

Break

ers

utilize

high

speed

stored

energy

spring

operating

mechanisms

The

breakers

and

their

enclosures

contain

interlocks

and

safety

features

intended

provide

safe

proper

erating

sequences

For

maximum

personnel

protection

associated

with

installation

opera

tion

and

maintenance

these

breakers

the

following

procedures

must

followed

Fail

ure

these

procedures

may

result

personal

injury

property

damage

•

Only

qualified

persons

defined

the

tional

Electrical

Code

who

are

familiar

with

the

installation

and

maintenance

low

volt

age

power

circuit

breakers

and

switchgear

semblies

should

perform

any

work

associated

with

these

breakers

•

Completely

read

and

understand

all

instructions

before

attempting

any

breaker

installation

operation

maintenance

modification

Courtesy of NationalSwitchgear.com

SECTION

DISASSEMBLING

THE

BREAKER

RETAINING

STUDS

The

steps

followed

when

converting

breaker

are

dependent

whether

has

metal

frame

slate

frame

The

following

sections

include

structions

for

both

types

Before

beginning

the

conversion

remove

the

breaker

clear

well

lighted

work

bench

Make

sure

the

breaker

the

OPEN

Position

SHUNT

SCREW

Front

and

Back

Frame

Separation

METAL

BREAKER

FRAMES

Step

Remove

the

three

arc

chutes

first

removing

the

screw

that

fastens

each

shunt

the

contact

arm

(

Fig

)

Unscrew

the

(

)

retaining

studs

the

sides

each

arm

chute

and

pull

them

forward

and

Save

all

the

hardware

Step

Disconnect

the

draw

out

interlock

the

right

side

the

breaker

Remove

the

hairpin

clip

the

inside

the

and

pull

the

out

Save

the

and

clip

(

Fig

)

Step

Remove

the

two

outside

pole

line

terminal

hous

ings

Remove

and

save

the

(

)

philip

’

head

screws

holding

each

unit

(

Fig

)

The

housings

can

removed

pulling

them

and

out

Some

breakers

may

require

that

the

contact

arm

pried

all

the

way

open

using

large

screwdriver

Step

Remove

and

save

(

)

philip

’

head

screws

holding

each

trip

unit

housing

the

back

frame

(

Fig

)

The

trip

unit

housing

will

removed

after

the

frames

are

separated

Fig

Arc

Chute

Removal

Fig

Draw

Out

Interlock

CONTACT

HOUSING

;

•

CONTACT

HOUSING

SCREWS

INSUIATED

HOUSING

SCREWS

;

Fig

Insulated

Housing

Removal

Courtesy of NationalSwitchgear.com

SECTION

DISASSEMBLING

THE

BREAKER

Front

and

Back

Frame

Separation

(

Cont

’

)

METAL

BREAKER

FRAMES

FRAME

Step

Remove

and

save

the

(

)

nuts

the

top

side

the

breaker

holding

the

front

and

back

frames

together

The

nuts

can

only

accessed

with

the

contact

housings

removed

using

open

end

wrench

(

Fig

)

Step

Remove

and

save

the

(

)

nuts

the

bottom

side

the

breaker

holding

the

front

and

back

frames

together

(

Fig

)

Use

long

extension

and

socket

wrench

The

frames

should

now

gently

separated

being

careful

not

damage

the

trip

unit

housings

Step

Remove

the

trip

unit

assemblies

from

the

front

frame

Remove

and

discard

the

(

)

philip

head

screws

fastening

each

contact

arm

the

electro

mechanical

trip

units

(

Fig

)

BOLT

Fig

Top

Frame

Bolt

Removal

Fig

Bottom

Frame

Bolt

Removal

CONTACT

AND

SCREWS

TRIP

PADDLE

TRIP

PADDLE

SCREWS

Fig

Bottom

Frame

Bolt

Removal

Courtesy of NationalSwitchgear.com

SECTION

DISASSEMBLING

THE

BREAKER

Front

and

Back

Frame

Separation

SLATE

BREAKER

FRAMES

SHUNT

SCREW

Step

Remove

the

three

arc

chutes

first

removing

the

slotted

screws

that

fasten

each

shunt

the

contact

arm

(

Fig

)

Pull

the

arc

chutes

for

ward

and

Save

hardware

reuse

when

reassembled

Step

the

draw

out

circuit

breaker

equipped

with

interlock

device

disconnect

the

draw

out

terlock

linkage

the

right

side

the

breaker

(

Fig

)

Discard

the

trip

bar

link

shown

(

Fig

)

Save

the

rest

the

linkage

reused

Fig

Arc

Chute

Removal

Fig

Draw

Out

Interlock

Linkage

Fig

Trip

Bar

Link

Courtesy of NationalSwitchgear.com

SECTION

DISASSEMBLING

THE

BREAKER

Front

and

Back

Frame

Separation

(

Cont

’

)

I I

SLATE

BREAKER

FRAMES

Step

Remove

the

load

terminal

bracket

the

back

side

the

breaker

(

Fig

)

Remove

and

dis

card

the

(

)

slotted

screws

that

hold

place

Step

Remove

the

(

)

slotted

screws

above

each

load

terminal

and

discard

them

(

Fig

)

Step

Remove

the

”

and

”

slotted

screws

below

each

load

terminal

and

dis

card

them

(

Fig

)

Step

Remove

and

save

the

(

)

bolts

that

hold

the

front

and

back

frame

together

(

Fig

)

Carefully

separate

the

frames

The

electromechanical

trip

units

will

fastened

the

front

frame

Step

With

the

front

frame

rolled

over

the

top

side

the

(

)

”

slotted

screws

each

trip

unit

can

removed

The

screws

hold

the

trip

units

the

contact

arm

(

Fig

)

Vie

SCREWS

LOAD

TERMINAL

BRACKET

•

SCREWS

Fig

Trip

Unit

Screw

Removal

FRAME

BOLTS

CONTACT

ARM

SCREWS

Fig

Trip

Unit

Removal

Courtesy of NationalSwitchgear.com

SECTION

DISASSEMBLING

THE

BREAKER

Trip

Paddle

Removal

METAL

BREAKER

FRAMES

Step

Remove

the

(

)

screws

holding

each

trip

paddle

the

common

trip

bar

(

Fig

page

)

Step

Return

the

(

)

screws

the

left

end

the

trip

bar

that

hold

the

trip

bar

rotation

adjustment

plate

(

Fig

)

ADJUSTMENT

ATE

Fig

Trip

Paddle

Removal

•

Courtesy of NationalSwitchgear.com

SECTION

DISASSEMBLING

THE

BREAKER

LOAD

TERMINAL

BRACKET

SCREWS

Removal

the

Old

Trip

Units

METAL

BREAKER

FRAMES

Step

Remove

and

discard

the

(

)

load

terminal

bracket

screws

from

the

back

each

trip

unit

housing

(

Fig

)

Step

Remove

and

discard

the

(

)

trip

unit

screws

from

the

back

each

trip

unit

housing

(

Fig

)

Step

Remove

and

discard

the

(

)

load

terminal

screws

the

top

each

trip

unit

(

Fig

)

Discard

the

electromechanical

trip

units

Step

Separate

the

load

terminal

bracket

from

the

old

load

terminal

(

Fig

)

Discard

the

load

termi

nal

and

the

hardware

but

save

the

bracket

TRIP

UNIT

SCREWS

Fig

Trip

Unit

Disassembly

(

Back

)

TOP

BUS

SCREWS

rrm

Fig

Trip

Unit

Disassembly

(

Top

)

LOAD

TERMINAL

BRACKET

Fig

Load

Terminal

and

Bracket

Courtesy of NationalSwitchgear.com

SECTION

INSTALLING

THE

CONVERSION

KIT

BOLT

NEW

LOAD

TERMINAL

Installing

Phase

Sensors

(

’

)

METAL

BREAKER

FRAMES

Step

Mount

the

new

copper

load

terminal

provided

the

insulated

housing

Use

the

bracket

removed

step

page

(

Fig

)

The

bracket

stalled

the

bottom

side

the

load

terminal

Use

the

(

)

screws

with

plain

and

lock

washers

and

the

bolt

with

plain

and

lock

washer

for

each

phase

Step

Assemble

the

”

shaped

steel

bracket

the

front

each

housing

placing

fiber

barrier

tween

the

bracket

and

the

new

load

terminal

(

Fig

)

Insert

the

(

)

and

lock

washers

provided

through

the

holes

above

each

load

terminal

(

Fig

)

Step

Place

spacer

phase

sensor

(

)

insulated

bar

rier

and

top

copper

bus

over

each

post

shown

sequence

(

Fig

)

from

left

right

The

top

copper

bus

held

place

using

bolt

with

plain

and

lock

washer

pro

vided

Also

insert

the

(

)

”

screws

with

plain

and

lock

washers

provided

threaded

into

the

bracket

SCREWS

•

Fig

Load

Terminal

Installation

with

plain

screws

SCREWS

Fig

“

”

Bracket

Installation

SCREWS

INSULATED

BARRIER

“

”

BRACKET

)

TOP

COPPER

BUS

FIBER

BARRIER

BOLT

SPACER

Fig

Assembly

Courtesy of NationalSwitchgear.com

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