GE IAC

GEK
-
86054
Time
Tests
With
the
tap
plug
in
the
minimum
amp
tap
and the
time dial
at
No
.
5
time
setting
,
apply
five
times
(
5
x
)
tap
current
to
the
relay
.
Adjust
the
drag
magnet
to
obtain
a
closing
time
as near as
possible
to
18.6
The
magnet
should
be
seconds
,
but
at
least between
17.7
and
19.5
seconds
,
approximately
in
the
middle
of
its
travel
.
The
magnet
is
adjusted
by
loosening
the
nut
under
the
magnet
shelf
.
Moving
the
magnet
in
decreases the
time
.
Moving
the
magnet
out
increases
the
time
.
When
adjusting
the
drag
magnet
,
be
sure
the
outer
edge
of
the
magnet
never
extends
out
beyond
the
cutout
in
the
disk
.
Be
sure
the
screw
clamping
the
drag
magnet
to
its
supporting
shelf
is
tight
before
proceeding
with
other
time
checks
.
Make
sure
the
drag
magnet
does
not
hit
the
counterweight
at
any
position
of
the
disk
.
With
the
tap
plug
in
the minimum
amp
tap
and the time
dial
at
the
No
.
5
time
setting
,
check the
contact
closings
at
2
and
10
times
tap
value
.
These
closing
times
must
be
within
the
limits shown
on
Table
XII
.
TABLE XII
60
HZ
MIN
SEC
.
MAX
SEC
.
2
x
Tap
42.6 49.0
12.3
10
x
Tap
10.7
INSTANTANEOUS
UNIT
1
.
Both
contacts
should close
at
the
same
time
.
The
backing
strip
should
be
so
formed
that
the
forked
end
(
front
)
bears
against
the
molded
strip
under the
armature
.
2
.
With
the
armature
against
the
pole piece
,
the
cross
member
of
the
"
T
"
spring
should be
in
a
horizontal
plane
and
there should
be
at
least
1
/
32
inch
wipe
on
the
contacts
.
front half of
the shaded
pole
and the
armature
,
with
the
armature
held
closed
.
The
contacts
should close
with
the
feeler
gage
in
place
.
3
.
Check
this
by
inserting
a
0.012
inch
feeler
gage
between the
TARGET
AND
SEAL
-
IN
UNIT
Check
steps
1
and
2
as
described
under
INSTANTANEOUS
UNIT above
.
To
check the
wipe
of
the seal
-
in
unit
,
insert
a
0.012
inch
feeler
gage
between
the
plastic
residual
of
the
armature
and
the
pole
piece
,
with
the
armature
held
closed
.
The
contacts
should close
with
the
feeler
gage
in
place
.
16
Courtesy of NationalSwitchgear.com