APPENDIX B
B-4
ACTION REFERENCEMALFUNCTION
2. Check the ground fault instantaneous trip level
setpoint and verify that the current is exceeding
this level.
3. Read the ground fault instantaneous trip delay
and verify that the overcurrent condition is present
for longer than this time.
4. Ensure that the trip relay wiring to the breaker is
correct at terminals 41 and 57.
5. Perform calibration mode relay test to verify the
operation of the trip relay.
1. Verify that the analog input feature is enabled.
2. Check that the analog input signal appears at
relay terminals 23 and 24.
1. Check maximum and minimum scale factors.
2. Check that the analog input current range being
input into the relay is within the limits of 4 to 20 mA.
1. Verify that the analog input trip is enabled.
2. Verify that the trip signal has been assigned to the
intended relay in the setpoints mode.
3. Check the assigned relay wiring to the breaker
trip circuit.
4. Read the scaled value of the analog input in the
actual values page 2, and ensure that it is above
the trip level setpoint entered in setpoints mode.
5. Read the analog input trip time delay from the
setpoints mode page 5, and ensure that the
analog signal is above the trip level for longer than
this time.
6. Perform calibration mode relay test to verify the
operation of the trip relay.
1. Verify that the analog input alarm is enabled.
2. Verify that the intended relay has been selected in
the setpoints and that the selected relay is cor-
rectly wired to the alarm circuit.
3. Read the scaled value of the analog input in the
actual values page 2, and ensure that it is above
the alarm level setpoint entered in setpoints mode.
4. Read the analog input alarm time delay from the
setpoints mode page 5, and ensure that the
analog signal is above the trip level for longer than
this time.
Setpoints page 3.
Setpoints page 3.
Relay wiring diagram.
Setpoints page 8.
Setpoints page 5.
Relay wiring diagram.
Setpoints page 5.
Setpoints page 5.
Setpoints page 5.
Relay wiring diagram.
Actual Values page 2, and
setpoints page 5.
Setpoints page 5.
Setpoints page 8.
Setpoints page 5.
Setpoints page 5 and relay
wiring diagram.
Actual Values page 2, and
setpoints page 5.
Setpoints page 5.
14. No display for analog in
signal in actual values
mode.
15. Displayed scaled value
for analog input incor-
rect.
16. Analog input trip not
operating.
17. Analog input alarm not
operating.
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