GE GCX51A - Target; Seal - in Unit; Installation Procedure; Connections; Location

GEI
-
98328
b
.
Target
/
Seal
-
in
Unit
The
target
/
seal
-
in
unit
has
an
operating
coil
tapped
at
0.6
or
2.0
amperes
.
The
relay
is
shipped
from
the
factory
with
the
tap
screw
in
the
0.6
ampere
position
.
The
operating
point
of
the
seal
-
in
unit
can
be
checked
by
connecting
from
a
DC
source
(
+
)
to
stud
11
of
the
relay
and
from
stud
3
through
an
adjustable
resistor
and
ammeter
back
to
(
-
)
.
Connect
a
jumper
from
stud
15
to
stud
3
also
,
so
that
the
seal
-
in
contact
will
protect
the
MHO
unit
contact
.
Then
close
the
MHO
contact
by
hand
and
increase
the
DC
current
until
the
seal
-
in
unit
operates
.
It
should
pick
up
at
tap
value
or
slightly
lower
.
Do
not
attempt
to
interrupt
the
DC
current
by
means
of
the
MHO
contact
.
Instead
,
open
the
circuit
externally
or
turn
off
the
DC
source
.
If
it
is
necessary
to
change
the
tap
setting
,
say
from
0.6
to
2.0
amps
,
proceed
as
follows
:
Remove
the
tap
screw
from
the
left
-
hand
contact
strip
and
insert
it
in
the
2.0
amp
position
of
the
right
-
hand
contact
strip
.
Then
remove
the
screw
from
the
0.6
amp
tap
and
put
it
in
the
vacant
position
in
the
left
-
hand
plate
.
If
this
procedure
is
followed
the
contact
adjustments
will
not
be
disturbed
.
INSTALLATION
PROCEDURE
Location
The
location
of
the
relay
should
be
clean
and
dry
,
free
from
dust
,
excessive
heat
and
vibration
,
and
should
be
well
lighted
to
facilitate
inspection
and
testing
.
Mounting
The
outline
and
panel
-
The
relay
should
be
mounted
on
a
vertical
surface
,
drilling
dimensions
are
shown
in
Figure
32
.
Connections
The
internal
connections
of
the
GCX
51
A
and
B
relays
are
shown
in
Figure
8
.
An
elementary
diagram
of
typical
external
connections
is
shown
in
Figure
3
.
It
will
be
noted
in
Figure
8
that
as
shipped
from
the
factory
,
internal
jumpers
are
connected
between
cradle
terminals
17
-
19
and
18
-
20
.
If
it
is
desired
to
use
a
separate
polarizing
potential
,
these
internal
jumpers
can
be
removed
.
The
restraint
voltage
would
then
be
connected
to
studs
17
-
19
and
the
polarizing
voltage
to
19
-
20
.
Visual
Inspection
Remove
the
relay
from
its
case
and
check
that
there
are
no
broken
or
cracked
component
parts
and
that
all
screws
are
tight
.
Mechanical
Inspection
Recheck
the
seven
adjustments
mentioned
under
Mechanical
Inspection
in
the
section
on
ACCEPTANCE
TESTS
.
19
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