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GEI-90802
CONSTRUCTION
The relay components are mounted in a cradle assembly that is latched into a drawout
case when the relay is in operation, but they can be easily removed when desired.
To do this, the relay is first disconnected by removing the connection plug that
completes the electrical connections between the case blocks and the cradle block.
To test the relay in its case, this connection block can be replaced by a test plug.
The cover, which is attached to the front of the relay case, contains an interlock
arm that prevents the cover from being replaced until the connection plugs have been
in se rted .
Every circuit in the drawout case has an auxiliary brush, as shown in Figure 12, to
provide adequate overlap when the connecting plug is withdrawn or inserted.
The relay case is suitable for either semi-flush or surface mounting, on all panels
up to 2 inches thick, and appropriate hardware is available.
However, panel
thickness must be indicated on the relay order to insure that proper hardware will
be included.
For outline and drilling dimensions, see Figure 15.
Internal connections for the IJS52D are shown in Figure 7.
Note that the
connections to terminal 10 are arranged so that the normally-closed contact of
liB"
or
"L"
can be used separately, as
sho\tm
in the typcial external connections in
Fi gu re
9.
RECEIVING, HANDLING AND STORAGE
These relays, when not included as part of a control panel, will be shipped in
cartons designed to protect them against damage.
Immediately upon receipt of a
relay, examine
it
for any damage sustained
in transit.
If injury or damage
resulting from rough handling is evident, file a damage claim at once with the
transportation company and
promptly notify
the
nearest General
Electric
Sales
Offi ce.
Reasonable care should be exercised in unpacking the relay in order that none of the
parts are injured or the adjustments disturbed.
If
the relays are not to be installed immediately, they should be stored in their
original cartons in a place that is free from moisture, dust and metallic chips.
Foreign matter collected on the outside of the case may find its way inside when the
cover is removed, and cause trouble in the operation of the relay.
ACCEPTANCE TESTS
Immediately upon receipt of the relay, an inspection and acceptance test should be
made to make sure that no damage has been sustained in shipment and that the relay
calibrations have not been disturbed.
If the examination or tests indicate that
readjustment is necessary, refer to the section on SERVICING.
VISUAL INSPECTION
Check the nameplate stamping to make sure that the Model Number and rating of the
relay agree with the requeisition.
6
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