GE POWER/VAC 4.16 - Spring Discharge Interlock

Q
00
m
00
ON
oc
§
00
•
»
4
UL
Interlock
Racking
Shaft
Rail
Slot
Fig
.
40
Positive
Interlock
operate
the
racking
mechanism
when
the
breaker
is
closed
and
in
either
the
“
Disconnect
/
Test
”
or
“
Connect
”
position
,
and
the
positive
interlock
fails
to
function
.
The
negative
interlock
consists
of
two
notched
members
in
the
left
-
side
track
assembly
which
operate
the
negative
(
trip
latch
)
interlock
roller
on
the
left
side
of
the
breaker
.
Refer
to
Fig
.
41
.
On
the
metal
-
clad
,
one
member
is
stationary
and
the
other
is
a
spring
-
loaded
slide
attached
to
the
racking
mechanism
.
A
third
member
,
a
notched
sliding
link
,
pro
-
vides
the
key
lock
functions
and
is
described
under
KEY
LOCKS
.
See
Fig
.
42
.
To
test
the
function
of
the
negative
interlock
,
install
a
circuit
breaker
following
the
instructions
given
under
BREAKER
INSTALLATION
.
For
this
test
the
control
power
circuits
in
the
metal
-
clad
must
be
energized
.
button
.
Again
,
the
closing
springs
will
discharge
but
the
breaker
should
remain
open
.
If
the
interlock
does
not
function
as
indicated
in
either
of
the
above
cases
DO
NOT
MAKE
ANY
ADJUSTMENT
.
COMMUNICATE
WITH
THE
NEAREST
GENERAL
ELECTRIC
COMPANY
APPARATUS
AND
SERVICE
ENGINEERING
OFFICE
FOR
ADDITIONAL
IN
-
STRUCTIONS
.
SPRING
DISCHARGE
INTERLOCK
The
spring
discharge
interlock
consists
of
a
notched
mem
-
ber
in
the
right
-
side
track
assembly
which
activates
the
spring
discharge
roller
on
the
right
side
of
the
breaker
.
Refer
to
Fig
.
43
.
The
function
of
the
spring
discharge
interlock
is
to
pre
-
vent
the
breaker
-
closing
spring
from
being
charged
unless
the
breaker
is
in
the
“
Connect
”
or
“
Disconnect
/
Test
”
position
or
removed
from
the
cubicle
.
In
addition
,
it
will
mechanically
discharge
the
breaker
springs
when
the
break
-
er
is
moved
between
any
of
the
above
mentioned
positions
and
prevent
recharging
by
opening
the
close
-
latch
-
monitoring
switch
in
the
breaker
spring
-
charging
circuit
.
To
test
the
function
of
the
spring
-
discharge
interlock
,
in
-
stall
a
circuit
breaker
following
the
instructions
given
under
BREAKER
INSTALLATION
.
For
this
test
the
control
power
circuits
in
the
metal
-
clad
must
be
energized
.
Place
the
breaker
in
the
“
Disconnect
/
Test
”
position
and
connect
the
secondary
disconnect
device
by
pulling
down
on
the
breaker
handle
and
inserting
the
level
arm
fully
in
the
breaker
.
This
will
actuate
the
spring
-
charging
motor
and
charge
the
breaker
-
closing
springs
.
Rack
the
breaker
toward
the
connected
position
using
the
manual
racking
handle
.
The
spring
-
discharge
interlock
should
discharge
the
breaker
springs
in
three
to
five
turns
.
Place
the
breaker
in
the
“
Disconnect
/
Test
”
position
and
connect
the
secondary
disconnect
device
by
pulling
down
on
the
breaker
handle
and
inserting
the
level
arm
fully
into
the
breaker
.
This
will
actuate
the
spring
-
charging
motor
and
charge
the
breaker
-
closing
springs
.
Push
the
sliding
link
located
on
the
front
of
the
left
track
to
the
rear
.
Refer
to
Fig
.
42
.
This
will
cause
the
negative
interlock
roller
on
the
break
-
er
to
depress
and
keep
the
breaker
in
the
trip
-
free
mode
.
Leave
the
sliding
link
in
the
rear
position
and
attempt
to
close
the
breaker
using
the
control
switch
.
Nothing
should
happen
.
Now
attempt
to
close
the
breaker
by
depressing
the
manual
close
button
.
The
closing
springs
will
discharge
but
the
breaker
should
remain
open
.
Return
the
sliding
link
to
the
forward
position
.
Rack
the
circuit
breaker
into
the
connected
position
and
close
it
either
manually
or
electrically
.
With
the
sliding
link
in
the
rear
position
,
attempt
to
close
the
breaker
using
the
control
switch
.
Again
,
nothing
should
happen
.
Now
attempt
to
close
the
breaker
by
depressing
the
manual
close
40
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