binding posts and completely isolates the
relay circuits from the external connections
by means of an insulating barrier on the
plug. The external test circuits are con
nected to these binding posts. The plug is
inserted in the bottom test jaws with the
binding posts up and in the top test switch
jaws with the binding post down.
The external test circuits may be made to
the relay units by #2test clip leads instead of
the test plug. When connecting an external
test circuit to the current elements using
clip leads, care should be taken to see that
the current test jack jaws are open so that
the relay is completely isolated from the
external circuits. Suggested means for iso
lating this circuit are outlined above under
"Electrical Circuits".
TESTING OUT OF CASE
With the chassis removed from the case,
relay units may be tested as per description
included on page 8.
Fig.
16-
Auxiliary Sbott Circuiting Switch
(Enlarged View)
Page 19
Fig.
17
Multi-Circuit Test Plug in Testing Position
An internal schematic for the relay is
shown in Figure 3.
Maintenance
The proper adjustments to insure correct
operation of this relay have been made at the
factory and should not be disturbed after re
ceipt by the customer (with the exception of
bandwidth or time delay settings). Repair
work can be most satisfactorily done at the
factory. If it is desired to check the adjust
ment at regular maintenance, the following
instructions should be followed:
NOTE: Before opening the test switches turn
the power supply off.
Refer to previous description of the
Flexitest case for method of removing cover
and relay.
\'lhen contacts require cleaning, they
should be cleaned with a fine contact file
similar to S#1002110 or a contact burnish
ing tool. Abrasive material should not be
used because any small particles embedded
in the contact surface will impair the contact
operation.
In the event any of the components be
come inoperatrve, they may be replaced
with renewal parts ordered from the nearest
Westinghouse Sales Office or from the
Sharon Plant. Should parts be ordered, give
the Style or Shop Order number of the equip-
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