GE POWER/VAC GEK 86132A - Page 18

16.3
.
CONTACT
GAP
ADJUSTMENT
The
gap
adjustment
refers
to
the
separation
,
or
gap
,
between
the
primary
contacts
within
the
vacuum
interrupter
.
Before
attempting
to
measure
or
set
the
gap
adjustment
,
verify
that
the
wipe
settings
are
within
acceptable
limits
.
Any
change
of
the
wipe
settings
will
affect
the
gap
settings
.
1
.
With
the
breaker
in
the
open
position
and
the
closing
spring
discharged
,
locate
the
gap
adjusting
nuts
on
the
opening
spring
rods
connected
to
the
outer
phase
bell
cranks
(
Fig
.
16
)
.
Loosen
the
jam
nut
on
both
rods
.
Back
off
the
adjusting
bolt
on
the
center
phase
VI
stop
(
Fig
.
16
)
.
Advance
or
retard
the
adjusting
nuts
depending
on
which
way
you
want
to
change
the
gap
.
Move
both
nuts
the
same
amount
.
3
.
.
Lock
the
jam
nuts
after
setting
the
adjusting
nuts
.
Operate
.
the
breaker
a
few
times
and
remeasure
the
gap
following
the
procedure
described
in
DIMENSIONAL
CHECKS
,
item
3
.
16
,
6
.
CLOSE
LATCH
STOP
BOLT
SHOULD
NOT
BE
ROUTINELY
ADJUSTED
-
WILL
AFFECT
SPRING
DISCHARGE
INTERLOCK
SETTING
.
This
adjustment
is
shown
in
Figure
L
and
is
obtained
with
the
breaker
in
the
open
position
and
the
closing
spring
charged
.
The
setting
is
checked
by
advancing
the
adjusting
screw
until
the
breaker
closes
.
Back
adjusting
screw
off
1
/
2
turn
(
3
flats
)
.
Check
function
by
opening
the
breaker
and
charging
the
closing
spring
.
If
the
latch
slips
off
the
roller
and
the
breaker
closes
,
back
the
adjusting
screw
off
1
additional
flat
.
Check
function
.
16.7
,
SPRING
DISCHARGE
INTERLOCK
THIS
INTERLOCK
IS
FACTORY
SET
AND
SHOULD
NOT
BE
ROUTINELY
ADJUSTED
IN
THE
FIELD
.
The
adjustment
for
this
interlock
is
as
follows
.
(
See
Fig
.
17
)
.
The
breaker
should
be
open
with
the
closing
spring
charged
.
1
.
Back
off
1
/
4
inch
adjusting
screw
.
2
.
While
holding
roller
at
0.995
inch
dim
,
,
advance
adjusting
screw
to
just
touch
interlock
lever
.
3
.
Check
that
spring
discharges
with
roller
at
0.561
inchmin
,
dim
.
4
.
Close
latch
must
reset
as
indicated
.
16.8
.
NEGATIVE
INTERLOCK
THIS
INTERLOCK
IS
FACTORY
-
SET
AND
SHOULD
NOT
BE
ROUTINELY
ADJUSTED
IN
THE
FIELD
.
The
negative
interlock
is
adjusted
with
the
breaker
closed
and
the
closing
spring
discharged
.
(
See
Fig
.
20
)
.
1
.
Hold
roller
at
0
,
670
inch
from
mechanism
side
plate
.
Adjust
linkage
so
the
striker
just
makes
contact
with
trip
linkage
.
2
.
Lock
in
place
with
1
/
4
inch
hardware
and
rivet
.
3
.
Check
that
breaker
trips
with
roller
at
0.561
inchmin
.
dim
.
4
.
Check
that
linkage
moves
freely
.
2
.
4
,
Readjust
the
center
phase
VI
stop
(
Figure
16
)
,
Set
adjust
-
ing
screw
for
no
clearance
between
stop
and
wipe
spring
rod
striker
with
the
breaker
open
.
.
v
,
16.4
.
TRIP
COIL
PLUNGER
;
(
To
adjust
trip
coil
plunger
gap
(
Figure
T
)
,
lift
locktab
away
from
adjusting
nut
.
Turn
adjusting
nut
until
trip
pin
makes
contact
with
trip
arm
while
maintaining
dim
,
T
.
Bend
locktab
"
to
secure
adjusting
nut
.
.
<
'
%
.
.
*
Reference
DIMENSIONAL
CHECKS
for
breaker
posi
-
tion
and
spring
status
.
16.5
.
CLOSsE
COIL
PLUNGER
j
,
To
adjust
close
coil
plunger
gap
(
Figure
C
)
,
lift
locktab
away
from
adjusting
nut
.
Turn
adjusting
nut
until
close
latch
actuator
makes
contact
with
close
latch
while
maintaining
dim
.
C
.
Bend
locktab
to
secure
adjusting
nut
,
Reference
DIMENSIONAL
%
ECK
»
for
breaker
posi
-
tion
and
spring
status
.
ftifr
i
f
.
•
.
MV
-
•
f
’
-
vtl
-
.
•
r
.
14
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