Power Loss Check - GE Multilin 565 Instruction Manual

RELAY TESTING
17 and 18 using a suitable meter. Verify that this output is
8mA DC with a phase overcurrent pickup level of 100%

Power Loss Check

This can be done when the above checks have been com-
pleted. First, make a note of any setpoint and then with power
applied, trip the Relay on any fault. For example this can be
done by simply increasing the injected current to simulate a
ground overcurrent and waiting for the timed overcurrent
curve to come into operation. When the trip relay or other
assigned relay is activated and the associated LED illumi-
nated, remove all power and current from the 565/575 Relay.
Leave it in this condition for a short time, say one minute.
Restore power and verify that the fault indication remains, ie,
the LED on the front panel remains illuminated. Select set-
points mode and view the earlier noted message. Verify that
the relay still displays the same value. This verifies that trip
annunciations and setpoints are unaffected by loss of power.
Enable all functions which were disabled for these tests.
Return the injected current to zero and return all setpoints to
their original values. Finally, remove the access jumper or
open the keyswitch. Remove all test apparatus and return
the system wiring to nor mal.
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