GE IAC

GEK
-
86054
Remove
the
relay
from
its
case
and
check
that
there
are
no
broken
or
cracked
molded
parts
or
other
signs
of
physical
damage
,
and
that
all
screws
are
tight
.
MECHANICAL
INSPECTION
There
should
be
no
noticeable
friction
when
the
disk
is
rotated
slowly
clockwise
.
The
disk
should
return
by
itself
to
its
rest
position
.
1
.
Make
sure
the
control
spring
is
not
deformed
,
nor
its
convolutions
tangled
or
touching
.
2
.
The
armature
and
contacts
of
the
seal
-
in
unit
,
as
well
as
the
armature
and
contacts
of
the
instantaneous
unit
,
should
move
freely
when
operated
by
hand
;
there
should
be
at
least
1
/
32
"
wipe
on
the
seal
-
in
contacts
.
3
.
The
targets
in
the
seal
-
in
unit
and
in
the
instantaneous
unit
must
come
into
view
and
latch
when
the
armatures
are
operated
by
hand
,
and
should
unlatch
when
the
target
release
lever
is
operated
.
Make
sure
that
the
fingers
and
shorting
bars
agree
with
the
internal
-
connections
diagram
.
4
.
5
.
CAUTION
Every
circuit
in
the
drawout
case
has
an
auxiliary
brush
.
It
is
especially
important
on
current
circuits
and
other
circuits
with
shorting
bars
that
the
auxiliary
brush
be
bent
high
enough
to
engage
the
connecting
plug
or
test
plug
before
the
main
brushes
do
.
This
will
prevent
Current
Transformer
(
CT
)
secondary
circuits
from
being
opened
.
See
Figure
1
.
ELECTRICAL
TESTS
DRAWOUT
RELAYS
,
GENERAL
Since
all
drawout
relays
in
service
operate
in
their
cases
,
it
is
recommended
that
they
be
tested
in
their
cases
or
an
equivalent
steel
case
.
In
this
way
,
any
magnetic
effects
of
the
enclosure
will
be
accurately
duplicated
during
testing
.
A
relay
may
be
tested
without
removing
it
from
the
panel
by
using
a
12
XLA
13
A
test
plug
.
This
plug
makes
connections
only
with
the
relay
and
does
not
disturb
any
shorting
bars
in
the
case
.
The
12
XLA
12
A
test
plug
may
also
be
used
.
Although
this
test
plug
allows
greater
testing
flexibility
,
it
requires
C
.
T
.
shorting
jumpers
and
the
exercise
of
greater
care
,
since
connections
are
made
to
both
the
relay
and
the
external
circuitry
.
POWER
REQUIREMENTS
,
GENERAL
All
devices
operating
on
alternating
current
(
AC
)
are
affected
by
frequency
.
Since
non
-
sinusoidal
waveforms
can
be
analyzed
as
a
fundamental
frequency
plus
harmonics
of
that
fundamental
frequency
,
it
follows
that
alternating
-
current
devices
(
relays
)
will
be
affected
by
applied
waveforms
.
AC
relays
(
and
AC
devices
in
general
)
are
significantly
affected
by
the
application
of
non
-
sinusoidal
waveforms
.
10
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