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TYPE RC RELAY
chassis
out
of the case.
set on a test bench in
tion as
well as on its top,
easy inspection,
maintenance and test.
After
removing
the
chassis may
be
inserted in the case or
blade portion of
the
and the
cover
put
in
chassis.
When
the chassis
in the case,
the
above
followed in the reversed order.
Electrical Circuits
Each terminal
in the
test
switch
to
the relay
chassis
as
shown
on the internal
diagrams.
The relay terminal is identified by
numbers marked on both the inside and
of the base.
The
test
identified by letters marked
bottom
surface of the moulded blocks.
letters
can
be
seen when the chassis is re
moved from the case.
The
potential and control circuits thru the
relay
are disconnected from the external cir
cuit by
opening the associated test switches.
Testing
The relays
can be tested in service,
case but with the external circuits
or out of the case as follows:
Voltages between
the potential circuits can
be measured
conveniently by
leads
on
the projecting clip lead lug on the
contact jaw.
Testing In Case
With all blades in
the ten circuit
test plug,
the contact jaws.
This
set of binding posts and com-
elements
to
a
pletely isolates
the relay circuits
external connections by means of an insulating
barrier on the
plug.
cuits
are
connected
The plug is
inserted in the bottom
The chassis can be
a normal upright posi
back or sides for
chassis
a
duplicate
the
switches can be
closed
place
without
the
is to be put back
procedure
is
to be
base connects thru
elements
in
the
schematic
outside
switch
positions are
on
the top
and
These
in the
isolated,
clamping # 2 clip
the full open
position,
�an be inserted in
connects
the
relay
from the
The external
test cir
to these binding posts.
test jaws
with
the binding posts up and in the top test
switch jaws with the binding posts down.
The external
test
the relay
elements by #2
stead of the test plug.
Testing Out of Case
With
the
chassis
relay
elements may be tested by using the ten
circuit
test plug or by #2 test clip l�ads as
described above.
relay
be checked in position as a final check
on calibration.
a
INSTALLATION
The
relays should be mounted on switchboard
panels or their equivalent in a location
from
dirt,
moisture,
heat.
Mount
the relay vertically by means of
the two mounting studs for the
and the type FT projection case or by means of
the four mounting holes on the flange for
FT
semi-flush
type
or the mounting
screws
grounding the
relay.
tions
may
be made direct to the terminals by
means of screws for steel panel mounting or to
terminal
studs
furnished with the relay
ebony asbestos
or
terminal
studs
may be easily removed
serted by locking
then turning the proper nut with a wrench.
ADJUSTMENTS AND MAINTENANCE
The proper
adjustments to
operation of this relay have been made
factory.
Readjustment
customer will be necessary only as required by
the
reclosing
cycle
supply
voltages
In
making
such changes,
relay
after repairs,
justments at regular
instructions below should be followed.
All contacts should
with a
fine
file.
mended for this
purpose.
circuits
may be made to
test clip leads in
removed from
the base,
It is recommended that
excessive vibration and
standard cases
case.
Either of the studs
may
be
utilized for
The
electrical connec
slate panel mounting.
two
nuts
on the studs and
insure
correct
after
receipt by
requirements
and
of a particular application.
in reassembling
or
in checking the ad
maintenance periods,
be periodically cleaned
S#l002110 file is
recom-
The use of abrasive
the
free
the
for
The
or in
at the
the
the
the
the
9
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