GE Feeder Management Relay 750

GE Multilin 750/760 Feeder Management Relay 8-9
8 COMMISSIONING TESTS 8.2 INPUTS/OUTPUTS
8
8.2.3 OUTPUT RELAYS
1. Enter the following settings under the
S8 TESTING Ö OUTPUT RELAYS subheading:
FORCE OUTPUT RELAYS FUNCTION: "Enabled"
FORCE 1 TRIP RELAY: "De-energized"
FORCE 2 CLOSE RELAY: "De-energized"
FORCE 3 AUXILIARY RELAY: "De-energized"
FORCE 4 AUXILIARY RELAY: "De-energized"
FORCE 5 AUXILIARY RELAY: "De-energized"
FORCE 6 AUXILIARY RELAY: "De-energized"
FORCE 7 AUXILIARY RELAY: "De-energized"
FORCE 8 SELF-TEST RELAY: "De-energized"
FORCE SOLID STATE OUTPUT: "De-energized"
2. Using a multimeter, check that all output relays are de-energized (i.e. N.O. contacts open, N.C. contacts closed).
3. Make the following setting change:
S8 TESTING Ö OUTPUT RELAYS ÖØ FORCE 1 TRIP RELAY: "Energized".
4. Check that the Trip output is energized (i.e. N.O. contacts closed), and the Trip LED is illuminated.
5. Make the following setting change: S8 TESTING Ö OUTPUT RELAYS ÖØ FORCE 1 TRIP RELAY: "De-energized".
6. Repeat Steps 3 through 5 for Output Relays 2 through 8 inclusive.
7. Observing polarity, connect a minimum 5 V DC source in series with a limiting resistor that will permit a minimum cur-
rent of 100 mA, in series with the Solid State output. Observing polarity, connect a DC voltmeter across the limiting
resistor. Check there is no voltage displayed on the voltmeter.
8. Change setting to:
S8 TESTING Ö OUTPUT RELAYS ÖØ FORCE SOLID STATE OUTPUT: "Energized".
9. Check that a voltage has appeared on the voltmeter. Turn off the source and disconnect the test wiring.
10. Change setting to: S8 TESTING Ö OUTPUT RELAYS ÖØ FORCE SOLID STATE OUTPUT: "De-energized".
11. Change setting to:
S8 TESTING Ö OUTPUT RELAYS Ö FORCE OUTPUT RELAYS FUNCTION: "Disabled".
Courtesy of NationalSwitchgear.com