Allis-Chalmers BWX-6637-5, Инструкция

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I
i
t
I
I
a.
RACKING ORAWOUT
AND
LIFTING
BAR
Cubicl e-mounted
breakers of the drawout
type
I
n
cl
u
d
e
as
Integral
p
a rt
s the
m
e
c
h
a n
i
s m to
rack the breaker In a n d out of the cubicle compartment,
t
h
e
drawout tri p
Interlock
and
the drawout position m a r k
i
ngs
.
·
·
Refer
to Figure
4.
L ifti
n
g bar
(401)
may
be
u
s
e
d
to lift the breaker when
it 15
being
Inserted In the
cubicle�
·
With
th
e
breaker In position
on
the
rails, the
f
o
llow
i n g sequence should be
u
s e
d
to
rack
t
h
e
breaker Into the fully
co
n nec
t
e
d
p
os
i
t
i
o
n
,
ON
ELECTRICALLY-OPERATED BREAKERS,
BE CERTAIN THA
T
THE CONTROL SWITCH ON
TtiE
FRONT OF THE BREAKER IS IN T HE 110FF11
POS
I T 1 ON.
1.
Lower
the Interlock slide (402) to expose
racking screw
(404),
(
L
ow
e
r
i
ng the Interlock slide
will
actuate
t
r
i
p rod
(406)
to
t
r
ip
a c l o s
e
d breaker.
)
While
the Interlock slide is
Jn this position,
the
b
r
e
a
k
er
Is "trip-free"
and cannot be clos�d.
2.
With the switchgear
o
p
e
r
a
t
in g crank, rotate r�cking
screw (404)
to
move racking
clevises (405)
to the
position
shown where they will
engage with fixed pins (403)
In the
c
ub icl
e
.
). The breaker should
now be p u s
he
d
along
the rai I s
t
o
the "DISCONNECTED"
position. A t the same
time the racking clevises
(405)
should be
c
h
e
c
k
e
d to
see that they
are In correct a
l
i
g
nm
e
nt
with cubicle fixed
pins (403).
Counterclock\11ise
rotation of the operating c
r
a
n
k
will
now
rack
the
breaker Into the
''TEST" find
connected
p
o
sI t
I
o
n
s
.
At
t
h
e
''TEST'' a n d
connected positions,
i
n
t
e
r
l ock
(408)
is
I n
Its normal
h
o
r
i z o
nt
a
l
p
o
s i
t i
on
.
By
r
em o
v i n g
op
e ra t
i
ng crank and then
r
a i
s
i ng i
n
t
e
rl
o
ck
slide (402),
trip rod
(406)
r
e
t
u
rn
s
to
the
ext
e
nd
e
d position permitting
trip shaft
(407)
to r
e
s e
t and
the breaker
may be
operated.
Between ''TEST11 and connected po
s
i t
i
o
n
s
,
the cubicle
I
n
t
e
rl o
c
k
cam
(409) raises interlock (408) to h
o
ld
trip rod
.(406)
and
t
ri p shaft
(407) In the "
t
r
i
p
-
f
r
e
e
"
position
so
t
h
a
t
the
b
re
a k
er cannot be
closed
even
if Interlock
s
l
i
de (4o2) Is raised. This Is to prevent
movement of
a
c
l
ose
d breaker l�to or out of
t
�
e connected position.
4.
T
o withdraw
the
breaker f r
om
the
connected position,
the
procedure
I s
the
5ame
except t h
a
t
the direction of
rota�lon
of
the operating
crank I$
clockwise.
CAUTION:
TO
AVOID
OAHAGE TO THE RACKING ME
C
H
A
NI
S
M
,
DO NOT ROTATE
THE OPERATING CRANK IN THE COUNTERCLOCKWISE DIRECTION
AFTER TtiE BREAKER HAS REACHED THE FU.LLV CONNECTED
POSIT ION.
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