GE POWER/VAC 4.16 - Interference Interlock

1
—
Position
Indicator
2
—
Racking
Shaft
3
—
Rail
4
—
Bearing
5
—
Racking
Nut
6
—
Forward
Slot
7
—
Cam
8
—
Rear
Slot
£
3
ON
00
00
U
*
Fig
.
41
Negative
Interlock
Q
00
m
3
1
—
Notched
Sliding
Link
2
—
Detent
3
—
Keylock
4
—
Bolt
5
—
Slot
ON
00
<
N
00
E
Fig
.
42
Key
Lock
and
Padlocks
Continue
to
rack
the
breaker
to
the
connected
position
.
Just
before
reaching
the
connected
position
,
the
spring
charging
motor
will
re
re
-
energized
to
charge
the
closing
spring
.
Close
the
breaker
.
Attempt
to
install
the
racking
crank
.
This
should
not
be
possible
because
it
should
be
blocked
by
the
positive
interlock
.
Trip
the
breaker
.
Rack
the
breaker
toward
the
disconnected
position
.
The
spring
-
discharge
interlock
should
discharge
the
breaker
closing
springs
in
3
to
5
turns
.
Continue
to
rack
the
breaker
to
the
disconnected
position
.
Re
-
energize
the
secondary
discon
-
nect
divice
as
before
to
cause
the
spring
-
charging
motor
to
charge
the
breaker
closing
springs
.
Raise
th
racking
arms
to
the
release
position
and
roll
the
breaker
forward
.
The
spring
-
discharge
interlock
should
discharge
the
breaker
closing
springs
before
traveling
1
/
2
inch
.
If
the
interlock
does
not
function
as
indicated
DO
NOT
MAKE
ANY
ADJUSTMENT
.
COMMUNICATE
WITH
THE
NEAREST
GENERAL
ELECTRIC
COMPANY
APPARATUS
AND
SERVICE
ENGINEERING
OF
-
FICE
FOR
INSTRUCTIONS
.
INTERFERENCE
INTERLOCK
The
function
of
the
mechanical
interference
interlock
is
to
permit
only
breakers
with
the
same
ratings
to
be
inserted
in
any
specific
compartment
.
This
interlock
consists
of
two
mated
comb
-
like
plates
,
one
on
the
equipment
and
one
on
the
breaker
.
The
equip
-
ment
interference
plate
is
permanently
fastened
to
a
cross
member
located
just
below
the
breaker
mechanism
frame
device
panel
.
(
See
Fig
.
44
)
TO
PREVENT
DAMAGE
DO
NOT
REMOVE
,
RE
-
PLACE
OR
READJUST
THE
RATING
INTERFER
-
ENCE
PLATES
ON
EITHER
THE
METAL
-
CLAD
UNIT
OR
THE
POWER
VAC
*
CIRCUIT
BREAKER
.
IN
CASE
OF
A
PROBLEM
CONSULT
YOUR
NEAREST
GENERAL
ELECTRIC
COMPANY
APPARATUS
AND
SERVICE
ENGINEERING
OFFICE
.
41
Courtesy of NationalSwitchgear.com