Siemens-Allis LA-3200A, LA-4000A, LA-40008 Instructions Manual

..

Courtesy of NationalSwitchgear.com

•

SIEMENS-ALLIS

Switchgear

•

INSTRUCTIONS

TYPES

AND

AIR

MANUAL

LA-3200A,
LA-40008
CIRCUIT

WITH

OR

OPERATORS

(UNFUSED)

BREAKERS

ELECTRICAL

LA-4000A

"'

18X5689-01

September,

1979

WAHRANTY

Courtesy of NationalSwitchgear.com

INSTALLATION

lntro duc;t 1on .

R

ecc

1vino tHHi

l

ns tall

<J

lion

.

Sw

r:.ig•~

.

Mai11t

en.ince .

OPERAT

IO N

es

cri

pti
Ma
El

nua

ectric

on

llv·Oper3

ally-Opera

D

Drawout Interl
Racking
Lifting
Spring

M

AINTENANCE
Mainte
Lubrication

Mechanism.

Bar & Ra

Disc

harge

nan

ce . .

.
Maintenance Closing
Handli

ng

Instruction

yp

ical L

Fig.
Fig.
Fig.

T

1

2

Typ

ical

3

Typi

cal

Operated Breakers

Fig.

4

Typical

Drawout Interlock

Fig. 5

Maintenance

ANO INSPECTION

ln

sp1?ctaon

fq

t Dn

rerl Breaker

ted Breaker .

ock

.

il

Extensions

Interlock

AND

A-3000A
LA·30
Wiri

ng

00A-4000A

.

.

ADJUSTMENTS

Breaker

Diagram

....

Rack

ing

Mechanism

Closing

n,

nqe

Outli

Operator

- El

ectrically

and

ne.

. 2 ·

6.

21

.17

L2

6

13
14

15

16

18

"

A <l 1t1St!TWr\

Tr

1p -

Mn

1n Co11t

Arc1r1q

Contac:t R

M.1

in Cont;

Srn11on:11

H 1

nge

Mov11H

Tr

3

3

4

4

4

8
5

1pp1 n q A

Motor Curoff Swit
Sec

onda
Auxiliary Switch
Shunt Trip Opt

TRIP

PIN G

Curr

ent Senso
Trippi
Bell

A larm Switch

6

Static Trip
Lim

iT ri
Undervo
L

ubr

icating Instructions

I

nstruct

Fig.

6

Fig. 7
Fig. 8 Auxiliary Switch
Fi

g. 9 Shunt Trip

Fi

g. 10

Fig

. 1 1

t$

L11tch

Enci;tCJl~f

nt-!nt

:1cr

Mnke

.

Con1;1c1

Co n

J Arr.1n

Mnk

t!

p lttCf!rTit!nt.

1cr F1nuers .

v A 1c1ng

tact F 1ng

<J

and

ctuntor.

".

Contact

ers .

Mai

ch

ry D isc.

Opt

io n .

Option

ion

TRANSFORMERS

rs

ng

Transformer

Tab

Option

Option .

p.

ltage

Trip

Dev

ion

Book Ref

Typical P
Secondary

.

anel

Assembly

Disconnect

.
Undervoltage Trip.
Bell

Alarm.

n Conta

.

ice

le

Option.

7

7

7

8

8

8
8

8

ct

8

8

9.

10

. 11
. 1 1
. 11

. 11

11

. 12

. 11

. 12

12

11

21

22

19
19
19
19

.

20

.

20

Table 1 Oper

ating

Operated

Procedure

Breakers

- Manually

. . .....

Table 2 Operating Procedure -Electrical

Operated

T

he information
equipment
operation

If

drawing

over

any con

o f t h

and
s

or

flicti

main

o t

Breakers

contained

is

her

n g

.

w i

thi

type.

I t

tenance

supplementary instructio

or incomplete

does

of the

n is in
not
part

information

·
.

I y·

tende

c

~

o

r elieve the user
icu

lar

assist

equioment purchased

ns

for

specific

in

this

opera

of respo

manua

Tab

le 3 Mai

ntena

Table

4

3

Tr

nce Closing

ip

Rating Tab le -

Static Trip II.

ab

le 5 Trip Rati

T

4

ng

Table

LimiTrip.

tin g personnel by providing information
nsibili

ty

t0

u se

sound

.

applications

l.

are

forwarded with th

engineeri

ng

practice

is

rnanual or

Amperes

on the

-s in

separately,

general ch

the installation,

they take precedence

aracteri

application

. .

stics

o f

i

12

i 2

,

WARRAN

Courtesy of NationalSwitchgear.com

TY

. ·Sicm<'ns-Allis

one

year

from
warranty
will

not

is l

in

20160).

"LA"

air

circuit lm•akPrs ar

datl'

of initi

imited

any casl' assunw

to

Lhl'

furnish

al

<>pnation

r<'

spons

ing

of

ibil

l'

warrant1·d

hut

not

any

part. which

ity

for

lo

lw fn•c ,

mon• than

to

alliPd 1·quiprn

>f

(kft'<'Ls
1·ighl1'c11 11\(>rlLhs
our

s;\l

i

~l'<ldinn

l'nt

1if

any

in

kind.

mat.

nial

and

from

date·

of shipml'nl

has h!'('ll pro»·

(S<'E' Si1

workma

c·n

:nH'ns-

nship

for

a period

hy

company. This

dPfPcti\'l'. Si('tnl'ns-J\llis

Allis Warranty

of

Form

Typic

al

Shipping

Methods

Used

II

With

"LA"

Breakers

INTRODUCTION

Courtesy of NationalSwitchgear.com

The

type

"LA"

use

d in metal·enclosed switchgear
"LA"
must be
aga

breakers are compl

so

inst the effects

air

installed

circu

it breakers may be furnished

ete

to

operate proper

of short

ly

circ

INSTALLATION

of

the

drawout

asse

mbled, tested, and calibr

ly.

Customer's

uit

currents

to

prevent overstressin g the breaker terminals.

AND

for

type,

prim

INSPECTION

mounting in

or

in

individual

ated

ary connections shoul

at

the

either

factory

enclosures

of

two

ways.

(drawo

in a vertical

d be adeq

They

ut

type).

position

uately

may

be

All

and

braced

RECEIV

Immedia
ing

spection

F

.0
tion,
diately.

Two

1.

2.

STORAG
Wh

material
sh

ou ld n

ture

NSTALLATI

I

ING AND

tely

upon

th

em

against the packing list and

must

be arranged

.B.

Shipping

the

con

ship

ping methods

Individually

Within
are bl

ock

bolts, and open breaker

E

en

breakers are

to

ot

fluctuations, space

Point,

signee must

skidded

a cu bicle

ed

to

provide

be exposed

ON

INSPE

receipt

prevent accidental

to

protection

CTION

of

for

consignee

obt

are used

with

on

exp

be

put

to

the

heate

FOR

this

equipm

by

consignee
must file a

ain the original

with

protec

ort

orders

con

tacts b

into

stora

from plaster, concrete dust, moisture

acti

on

rs

or

the equivale

DAMAGE

ent,

caref

noting

"LA"

tive covering

tripping

ge,

of

any damages incurr

within

claim

of the carrier inspection

breakers:

when

part

duri

efor

e insta

they

should be wrapped or covered

cor

rosive

nt

ully

remove all packing traces and examine parts, check-

ed in transit.

15 days

with

for

of

a swi

ng shipment.

llati

gases or

should be provided_

of

receipt

the carrier.

domestic shipments.

tchg

ear lineup. Breakers shipp

Note

on.

moisture. In a

of

equipment. If

If

equipment

report

all

caution

or

other

r.eas

If

such

is

disclosed, carrier in-

equipment shipped

is shipped F.O.

and

notify

with a non

foreign matter_ Breakers

of high

tags,

remove

humidity

Siem ens-

ed

in

-absorbent

B.

Allis

their

blocking

or

tempera-

Destina-

imm

cubicl

e-

es

The"

LA"

air

circuit
check should
justment. Circuit
is

free

from

th

e op en pos

cant

supplied

1. Befo

posi
ADJUSTMENTS

During
between movable arcing contacts and parts
detailed
service.

2_

Trip
to

be certain

struction

3. Breakers are equ
of

the

interlock

4.

Upon

t~on

be made

destructive acid

itio

with

re

the

tion,

then close

the

description

units

Book

connected

. I

complet

tested,

breaker

to

breakers should be install

n, and

breaker is install

clos

and accessory devices should

ts

then

primary

accessories.

, page 6)

ing

that

adjustments are

18X4827

ipp

position.

operation

ion

of

the

is

com

ple

be

cert

ain that

or

alkali fumes. Before insta

discon

ed

in

it

manually

to

check

operation,

of

the

ed

with a drawou

the in stallation inspection,

breaker

circ

supp lied

See

should

is

observe

uit

SPRING
be

ready

tely

adjusted, tested, and inspected

shipmen t or storage has

ed

in a clean,

nect

fin

gers are l

position,

by

the

proper

breaker operating characteristics

proper

with

checked before the breaker

make sure racking clevi s' (Fig.

maintenance closing me

functioning

that

the contact

of

receive a

and parts are

this

equipment

t interlock

DISCHARGE

to

be energized.

dry,
lling

ubr

icated

s move freely

the arc chutes. Then r

thorough

to

prevent

the con

- 1 -

not

well-ventilated ar

, make certain

with

of

the mechanism and contacts.

check

not

dama

or

to

LimiTrip

movement

INTERLOCK,

is

trol

wiring,

befo

re shipment,

resu

lted

in damage

ea

in

which

tha

t the breaker

Siemens-Allis electrical

4)

are in test

thod

(see

MAINTENANCE AND

without

efer

befo

prior

ged

. Refer

of

page 5

energized.

if

any,

interference

to OPE

re

to

placing the breaker in service

Book

a clos

putting

to

Stat

18X

ed

for

is

check

RATION,

the breaker in

ic

10107_

breaker

a description

ed

but

or

change

the

contacts

or

Trip

and

a care

ful

of ad-

atmosphere

are in

contact

con

or

page 3

Devi

into

the

lubr

nect

rubbing

for

ce In-

or

out

of

the

insula-

i-

a

CAUTIONS

Courtesy of NationalSwitchgear.com

'

STA

1.

Never

using the guide rail extensions supplied.

2. Read the

3. As the closing springs
the
the

4.

When charging manually-operated breakers, always
vertica l

5. Check
gear at insta l

6. Check the
distortion

7. Once the breaker
ponent

MAINTENANCE

TO

BE

OBSERVED

LLATION AND

try

to

remo

Instruction

open

or

closed

breaker.

position

current

lation.

alignment

of

fingers

parts are also energized.

OPERATION

ve

position,

.

ratings against single line diagram

during

is

energized,

IN

THE

OF

the

breaker

Book

on

stored-energy breakers

of

the

from

before

secondary disconnect fingers

shipment

installing

extreme

it

should

care should be taken

and handling.

"LA"

the

See

not

CIRCUIT

compartment

page 17.

or

making

may

be charged

hold

to

assure

be touched,

BREAKERS

or

reinsert

any

changes

with

to

discharge the springs before

handle

to

except

firm

that

breakers are

ensure against

for

into

the

compartment

or

adjustments on the breaker.

the breaker

ly

unt

il

properly

misalignment

operat ing, since

it

is

contacts

returned

most

without

in

working

to

located in switch·

due

of

either

on

the

nor

to

possible

the com-

mal

Occasional chec
spection and servicing on an annual basis should be
c:horter intervals

the

circuit
closed
made

or

to

ensure freedom

breaker

open

king

and cleaning

if

necessary

is

position

of

due

to

not

operated

any

longer than six

of movement

the

breaker

environmental

auring

of

all parts .

will

extended periods,

months.

promote

included

or

operating conditions.

Maintenance opening and closing operations sho

long and

in the breaker maintenance

the

trouble

breaker should

-free service. A

not

remain in

periodic

routine

or

at

either

uld

in-

the

be

. 2 -

..

Courtesy of NationalSwitchgear.com

DESCRIPTION

The LA-

interruption
delay trip device.
65,000 ampe

The
ruption
with
amperes

Th

(

A.

(B.)

(C.)
All operato
A

double-to

required, regardless

(A.)
The breaker has a

tive purposes
toggle linkage
handle

(215) and
allows
move rolle
(175) clear
(1538)

When the closing springs are
paw l ( 146) in such a
to

With

hood
aga
cycle can be in
trip

shown in detail

Manual opening

top

3200

air

rating

res

LA-4000A

rating

instantaneous

at

635 vo!ts. All

ree

configurations

) manual charging,

electrical charg
combination

rs

are

ggle, trip-free mechanism is

Manually-Operated Breaker (Refer

they

when

downw

ro

should

its

normal

the

(149), latch

inst

the

latch (

of

trip

ard rotates closing cam (

extending the

ller (181) in togg

rs

away

trip latch

position.

charging handle in

toggle rollers (181 )

terrupt

153A) to a position

flap (1538) which

circuit

With

at

and B

of

85,0

manual-electrical charging

identical

center-mounted

from

normally

(148)

"A".

of

breaker

of

65,000

instantaneo

508

volts, and 65,000 amperes

air

circu

00

amperes when used

trip

device is 130,000 amperes at

currents

of

the

ing

except

of

the

position

wil

l be referred

the breaker

closing springs

le linkage

stop

(153A).

stop against the

manner

will d i

ed

at

the

breaker

has a maximum

amperes

us

it

breakers have a

are

operator

for

of

frame so
to

is

open and

to

block (1

Spring (155) causes

fully

charged, roll

that

the charging cam

its

normal

sengage

movi

ng

any point

that

rele

is

accomplished

is in tu

OPERATION

continuous

at

254,

508,

or

635

volts

trip

device, the

with

symmetrical amperes and

are availab

the means

use

d;

that

the

mechanism.

to Fig

ure 2 a

many

as

single items. Detail

the

204

) against

thru link

be moved in

71

),

then the toggle linkage

front

surface

er (168

upright

roller
the

by

ases

rn

arranged

posi

(168) and closing springs

togg

le

operation

latch ( 175)

interruption

at

635

volts.

continuous

the

short

254

volt

le

for

charging the closing springs. These are:

of

supp

lying

is,

the

breaker contacts are free

nd

Table

of

the

latches and links

closing springs are discharged.

roller

(168),

(163) and spring hanger (157).

to

position

trip

latch

of

latch (175).

) engages latch (

must

complete

tion,

the

into

its

upright

of

one

of

allowing

by

pressing in manual

to

disengage the trip latch

current

cur

time

s,

energy

"A" shows the

shown in Detail

(153A)

breaker can

the

rating

60

Hz., when used

rating

rent

rat ing

delay

85,000

vol

tages are

to

1)

thus

is

moved
to

the

position, shown in detail

tripping

toggle linkage

of

is

85,000

of

trip

device. The int er

amperes

maximum.

the closing springs.

are arranged in pairs;

position

pivoting

by

reset

under

148).

Charging cam (

charging stroke

be

closed. By pressing

cau

se

closing cam (159)

means,

trip

bar ( 188

(175).

3,200

ampere

with

ampe

res

4,000

ampe

at

508

volt

to

open

of

the

Movement

closing cam (

Rotation

"B".

Kickoff

torsion

to

spring

lat

ch (175).

before

which

collapse

).

This

cause

s,

and

the

short

at

254

res

and

an

ruption

s, and

at

any

time,

for

trip

latch and

of

the

charging

159) about

of

cam (159)

springs (199)

unti

l latch

Trip

204) engages
it

can return

firmly
to

rot

"C"

. T

he

rotat

to

the

position

bar

engages

an
time

vo l

ts,

int

er-

rating

85,000

if

descrip-

pin

flap

on

ate

closing

ion

of

the

TABLE
Operation

Charging Springs

Closing

Tripping

1 -

OPERATING

Procedure
Make sure

charging handle
Pull charging handle

vertical
versal

Push
vertical

Push

If

PROCEDUR

position.

until

down

position.

in

manual trip

shunt

trip

E -

MANUALLY-OPERATED

that the racking clevis' are in

down

with

clevis' in disconnect

down

all

the

way

(Engagement

the

downward

firmly

OR

on

spring-release

bar ( 188

is

provided, operate r

of

pawl with

stroke is completed.)

latch

),

emo

te

- 3 -

BREAKERS

either

(approximately

test

or

connect position.

position

the ratchet teeth prevents handle

hood

( 149)

trip

control

as

120

after

switch

shown in Fig. 4.

°) and

handle

(CST).

return

is

returned

(See

Never pull

to

normal

re·

to

normal

Figure 3.)

(B.)

Courtesy of NationalSwitchgear.com

Electrically-Op

:

The

mechanism

th

at

the

manual chargi
trol circuit,
box

pinion

ca

m (

223

) which rotate s

wind

and close earn (223) reaches its charged pos
rotating the
in the operate pos i
lifts

lever (231) clear, releasing

sto

ps,

and the closi

The

bre

aker can

(CC)

throu

is

energized and opens

tempts
If the close

power

s

witch MCO.

vented

to

is

by

ava

of

closing the

rotate

s gear (

lever away

now

gh

the external close

charge the

circuit

ilable

Trip

comp

leting

erated Breaker (Refer

the

electrically

ng

tion,

ng

co il

be closed

the

clo

CSC

for

the

free

operation

the

handle

motor

224

the

from

and

circuit

"Y"

sing springs.

switch

motor

close

operated breaker

is

replaced

con

trol

) co

unterclockwis

cams in the

the

switch

the

motor

the

motor

is

set

by

depressing the latch

control

contact

is

opened,

circuit.

of

the

coil

circuit

to

Figure 1

by a motor

switch

will
up

(Ml)

e, cam

sam

e manner

operator.

continue

cutoff

through

switch
in

The close

mechanism, discharging

(CSC). When

the motor

the

motor

through

-2

and

is the same

and gear system.

will sta

ition

Gea

switch {MCO

one side

coil circ u

rt

follower

as

for

, the back

r switch lever

to

run

hood ( 149) or

circuit,

will autom

an

auxiliary

4)
as

the manually

With

the

automat

(233)

the manually charged breaker. When the

of the

until

the

).

When the MCO switch opens, the

of

the

the

close

thus preventing

atically

it

is

always

the
contact

ic charging cycle.

engages

cam

(23

1) wil l still

roll

pin

MCO switch.

by

energizing the closing coil

circuit

recharge the closing springs,

interr

sprinQs on a closed breaker

of

oper

ated breaker

power

an

eng

s on the side

is

"pumpi

upted

the breaker.

ava

ilabl e

The

arm

of

wind

and close

ages

switch lever

be

holding the

of

gear (

energized, the "Y" relay

ng"

or

repeated at-

by

the

motor

to
motor

(229)

cut-o

is

except

the con-

gear

switch

224)
motor

if

ff

pre-

TABLE

CAUTION!!

Operation

Charging Springs

Closing

Tripping

(C.)
The combination

system
e

lect

Drawout Interlock
The breakers

ment, i
lock ing

2 -

OPERATING

MAKE SURE
TION

IN

Combination

as

well

as

rical charging.

include

nterlocking

to

preve

nt

PROCEDURE

THAT

BEFORE CHARG

DISCONNECT

Procedure

Energize

positi
After

Pu

sh

Actu
Push in

Operated Breaker

manually

the manual charge handl

as

to

prev

withdrawing

con

on.

springs are charged, actuate remote close

OR

down

ate

integral parts

firm

remote

OR

man

and el

ent

racking a closed breaker

a breaker

RACKING

POSITION

tro.J

circuit.

ly

on

trip

ual

trip

ectrically

the

- E

LECT

RICA

LLY-OPERATED BREAK

CLEVIS

ING SPR INGS. DO NOT CHARG

AS

THIS

Move

motor

spring-r

control

bar

e.

mechanism

fro

elease

switch

( 188).

operated brea

NOT

E: Manual Handle must

m the cubicle

COULD

latch
(CS

to

rack

into

' (FI

G.

control

hood

T).

ker

includes

the

or

out

while

4)

ARE

CAUSE

switch

control
(149).

both

breaker in

of

the connect

the closing springs are charged.

ERS

IN

TEST OR CONNECT POSI-

E SPRINGS WI

DAMAGE

on front

switch (CSC).

the

be

or

of

moto

in vertical

out

of the

ed

position

TH CLEV

TO

BREAKER.

breaker

r-gear charging

to

position

cubicle

, and inter-

"ON"

during

comp

IS'

art

-

Racking Mechanism

Refer

to

page 17.

rack the breaker

CAUTION

C

AUTION!!

1. Push trip bar
ed
position

!! NEVER INSTALL

unless

With

into

the cubicle.

HAVING

ON

ELECTRICALLY

ON

THE

in,

lower

manual

and

trip

cannot

the

FRONT

breaker resting on the

OR

REMOVE

RAIL

EXTENSIONS

OF

interlock

bar

is

pressed in.

be closed.

OPERATED

THE BREAKER

slide and insert racking crank.

cub

icle rail the fol

A BREAKER

IN

PLACE. SEE PAGE 17.

While

BREA

the

KERS, BE SURE MOTOR CONTR

IS

OFF.

trip

bar

-4 -

lowing sequ

FROM

is

pressed in , the breaker is in the

THE

NOTE:

ence s

hould

COMPARTM

Interlock

slide

ENT

be u

WITHOUT

OL

SWI

cannot

TRIP-

sed

be

to

TCH

open-

FRE E