f
2 .
.,
B
r
e
a
k
e
r
The mechanism of th
e electrically-operated
breaker
is the
same
as that of t
h
e
manut.ll
ly
-
op
e
ra
te
d breaker except that
the
manual
closing handle is
r
e
p
l
a
ce
d
by
�n electric motor and
the ge�r
s
y
s
t
e
m
.
Refer
to Figures 2A
and
3 .
M
o
v
e
me
n
t
of the control switch (N)
located
on the
f r ont of
the
br
ea
k
e
r
to the "ON11
p
os
l tlon,
when the control c
l
rcul
t
Is energized,
will
start
the automatic closing cycle. Hotor gear box
pinion
(238)
rota tes
g
e
a
r
(235)
counterclockwise,
a
n
d
pins (236)
move
across
the top of flat
b
ia
s
i
n
g
spring (234).
This raises t
o
g
�
l
e
linkage
(237)
over c
en
t
e
r
and positions
g
e
a
r
(235)
to mesh with
gear
s
eg
m
en
t
(240).
Since
this gear segment Is attached to closing cam
(210), the
stored-energy
sp
r
i
n
gs
are charged
and
l
a
t
c
h
e
d
in
th
e
same sequence as
described In the previous
s
ec
t
i
on
.
The lower
e
xt
e
n
s
i
o
n
of closing
earn
(210) engages a
r
oll
e
r
on t oggle
linkage (237)
to
d
i
s
e
n
g
a
ge
gear (235)
fr��
g
e
a
r
segment (240) after the stored-energy
s
p
ri
n
gs
a re
latched
in
the
c
h
a
r
g�
d po
s
i
t
i
o
n
by
spring-release l
a
t
ch
(202).
Spring-position switch
(230)
(SPS
b)
i
s
actuated to the open
position
by
arm
(231) attached to
link
(225)
as the
stored-energy springs
a
ppr
o
a
c
h
the charged position. This switch Initiates
t
h
e
spring
recharging
cycle
and is connected
in
parallel
with motor
cut-off
switch
(232)
(88a)
which
is
open initially, closes while the
motor charges the springs, and op
e
n
s
when
the springs are charged with
the
g
e
a
r
i
n
g
disengaged.
The
motor
cut
off
switch
is
actuated
by the movement
of plunger
(
2
3
3
)
over pins (236).
Approximately twelve seconds are
r
e
q
u
i
r
e
d
for completion of the spring
charging cy
c
l
e
.
The
b
r
e
a
k
e
r
may
now
be
closed by pushing down spring-release latch
hood
(202A)
as In the manually-operated
breaker, or
it
may be closed
electrl
c�l
ly through remote close
control switch (CSC).
This switch
energizes
spring-release coil
(SRC) which
moves pin
(241)
in
a
counterclockwise
di
r
ec
t
i
o
n
to trip spring release latch
hood
(202A)
and
spring-release
latch (
2
0
2
)
.
The
1'V11
coil
is
en
ergi
z
e
d
simultaneously with the
spring
release coi
I
a
n
d
causes the
11Y11
contact
to open the circuit to
the
m
oto
r
.
Since the
11Y11 r
e
l
a
y
will
remain e
n
e
r
gize
d
as
long
as the remote close
c
o
n
t
r
o
l
switch (CSC) is held closed, 1'Y111
c
on
t
a
c
t
keeps the
motor circuit
open
to pr
e
v
e
n
t
11pumpl
ng11 or repeat(_,d
attempts to charge the
stared
energy
springs
w
he
n
the breaker is closing.
After the stored-energy springs are
discharged,
t
h
e
y
are automatically
recharged as
long as the control circuit is e
ne
rgi
z
e
d
,
and
the
co
n
t
r
o
l
switch (N) Is
in the 110N11 p
o
s
i
t
i
on
.
Figure
3
s
h
ow
s
the spring-position
switch
(SPS'b)
closed
to complete th
e motor control circuit as
it
would
be when th
e springs are
discharged.
TABLE
2
OPE RATING PROCE DURE
E LE CT RICALLY-OPE RATE D BREAKERS
C
h
a
r
g
i
n
g
S
p
r
i
n
g
s
:
Closing:
OR
Tripping:
OR
Energize control circuit. Move control
sw
i
t
c
h
(N)
o
n
front of breaker to
110N11 position.
After springs are
charged, actu�te
re
m
o
t
e
close c
o
nt
ro
l
switch
(
CSC
)
.
Push down
s
p
r
in
g
-
r
e
l
e
a
s
e latch hood
{202A).
Actuate remote trip
control switch (CST).
Push
i-n
manua
1
trIp rod
(207}.
- !.. ..
Summary of Contents for LA-1600
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