Allis-Chalmers LA-1600, Instruction Book

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. � .
S E CT I ON
O�ERAT I ON
A .
The
LA-600
a i r
c
i r c
u
i t b rea ke r hes
a n i n te r r u P t i n g c a pa� i ty
of 25 ,000
a
m
p e
r
e s and
a
max i mum
c o
n
t
i
n u o us c u r r e n t r
a t i
ng o f 600
a�u� r e� � :
600
vo l h ,
60
c yc l es .
F o r I n forma t i on on o th e r vo l ta ges o r f re :t ..: e r. c i e J ,
t b'' .,,
f ac t o
r y
: s
ho
u
l
d be c o
n
s u
l t
e
d
.
I t J s ava i l a b l e
as a
manua l l y-ope r a t ed
b rea ��
or
an e l ec t r i -:a l l y-ope r.a t ed b r e a
k e r
.
The
two
b r
e
a
k
f!
r
S
a re i den t i ca l
w i th
t he
e" ce p t l on of the
me
d
i �.m
used t o t ransmi t pO'�e r to
ch •
r
g
e the
s t or e :.J - enu g t
$pr l ng5 •
A
doub l e- togg l e , t
r
i
p
-
f r
e
e mecha n i sm
t s ·
used ; t ha t
I s , the b rea ke r c on ta c t!
a r e f ree
t
o open a t any
t i me ,
I f req&:d red , rega rd l e� s of the p o
s
i t
i
o
n o f
the
mechan i sm or
the f
o r c e be i ng a pp l i ed .
:
I .
As
t he b rea ke r has a s i ng l e- f rame t � pe
ccn� t r uc t i cn , mos t o f tne l a t ches and l i n kages a re a r r a ng
e
d
i n pa i r J ;
·
howeve r , for des :; r
I
p t i
ve
p u
r
p
o
s
e
�
.
they w i I I
be
r e fe r r�d
t o
a s .s
i
r. 9 l
c
i t ems .
R
e f
e
r
to
F
i
g
u
r e
2 . O
e t a
l l
1 1AJ 1
s hows the p
o
s i
t i
o
n
of t r i � l a t ch
(2 1 6) when
the b r eaker con tac t s a re
open
w i t h t �c c l o
s
i n g
s p
r
l r. g d i s ­
c
h
a
r
ged
.
Movemen t o f c l os i ng hand l e (20 1 ) downwa rd
r
o t a t
e s
r.am
( � 08)
a g
a i
n
s t ro l l e r {205)
thus p i vo t i n g
c
l
o s i
n g cam
( 2 1 0) c l oc k� i se �bau:
p i n
(206)
a n d ex t end i ng s t o r e d - e n e
r
g y
s
p r
i
n g s
(
2
0
9
)
·th r O!.igh
l i n k
{2�5)
a n d p i n (226) .
R
o t a t i o n o f cam
(2 1 0) c l ockw i s e
pe rm i t s s p r i n g
(2:
7 } t o
c o J I �ps e togg l e l l n k�fge
(2 1 3)
a n d
(220) . A t
t h
,
e
s ame
t
i
m
e
,
t r i p l a c .:ll
(2 1 6) I s
r
e s
e t b y t o r
s i o
n
s p r i n g (228)
as s hown i n
Oe ta i I ' '6 1 1 • r�..s n
i n
g
down
s p r i n g
r
e l e a
s
e
l a t ch hood {202A)
a f t e r t he c l o
s i
n
g
hand l e
i s
re t � r ned
t o the n o r
m
a l
ve r t i ca l pos i t i on , re l eases the ene r g y i n s p r i n g�
(209) . Th rough l i n k (225} , c l o s i n g
cam
(2 1 0) I s rotated ccun t e r c l o � �� l se
a
g
a i
n
s t
r o l l e r (2 1 9) wh i e;h
moves
togg l e l i
n ka
g e
as
shown
i n O e ;. a i ! • Jc • • ,
t
o � l os e t he b reake r
c
o n t a c t s
.
The c l os i ng oper a t i on may
b e
i n t � r r ;pted
c H
a ny po i n t by func t i on i ng o f
t
h e t r i p dev i ce , thus en s 1.1 r i n g
• • t r i p - f r e � 11
o
p
e
r �J t
i
o n
.
To open the b r ea ke r co n t a c t
s
, t r i p rod (207)
i s
a c t ua ted . Th i s
rota tes
t
r i
p
s ha f t ( 2 1 5)
c l oc
kw
i
s
e wh i ch re l eas e s t r i p l a
t
c
h
(2 i 6) a s
sho..on
i n
De ta i l 1 1A1 1 • On
b reakers
equ i pped w i t h a
shun t
t r i p d e
v
i c e
,
the
b recJ ke r
con tac t s
may be ope ned by
o
p e ra
t
i o
n
of
a
r e m o t
�
t r i p
c
o
n t
r
o l
swi tch .
The s hun t t r i p
dev i ce
r o
t
a
t
e
s the t r i p
s ha f t
to
r
e l e
a s
e
t he t r i ?
l a t ch .
TA9 LE
I
C LOS l NG :
---
1' P. I P P I NG •
_.....,... ______ ,
OR
OPERAT I NG
PROCEDURE MANUA LLY-OFER.UEO
13K£ At�
.
.(RS
·------··1
Pu l l hand l e { 20 1 ) down a l l
t
h e wfly (approx i m.a t e l >y· 1 :!0°)
and r
e
t u r n to no rma l ve r t i ca l pos i t i on .
(En gage.r.c:r. t
uf
paw l
(2 1 1 )
w i t h the r
a
t c h e
t
tee th preve n t s hand l e
� r- -
'
ve r s a l unt i
I
the d
ow
n
w
a r d
s t ro�e i s
' �np l e t ed . )
f'ush down
s p
r
i
n
g
-
r e l
e
a
s
e l a t ch h ood
(l02A)
a f t e .-
hand l e
i s retu :-ned t
o
norma l ve r t lc;; a l
,
pcs l t l
o n
.
Push i n
manua l t r i p
r
o d
(207) . '
! f
s hunt t r i p I s p rov i ded ,
o p
e
r
a t
e
remo te t r i p
con t r o l
sw i tch
( C S T) .
(
S ee F i g u re
3 . )
i
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