T O S H I B A
TEST PROCEDURE
It is not necessary to schedule periodic maintenance
and testing of the ground fault protection.
However,
if tests
are desired to confirm the proper operation of the system, one
of the following procedures can be used.
1. Mounted in
panel
r - - - - - - - -
Note.
Fig.
12 Test circuit
The above figure shows the relay reset. (not tripped).
The resistor in the test unit is for
1.
When testing the ground fault module, keep the main circuit
de-energized.
2.
Set the ground current knob at a proper value of IGS.
(ground fault trip point)
3.
Connect the test wire through the ZCT window as show in
Fig. 12.
4.
Apply control power to the 2E and interrupting device.
5.
Apply
with the test circuit and interrupt the
current when the relay operates.
6.
Check the operation of the relay with test switch on the 2E
and check that the LED indicator lights.
7.
If the relay does not operate at the set time, interrupt the
test current.,
cheek the current setting and the repeat test.
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