17-
74
750/760 Feeder Management Relay GE Power Management
17.10 PLACING THE RELAY IN SERVICE 17 COMMISSIONING
17
17.10 PLACING THE RELAY IN SERVICE 17.10.1 DESCRIPTION
The procedure outlined in this section is explicitly confined to the operation of the relay, and
does not include the operation of any equipment external to the relay.
1. Cycle through the relay setpoints and set each setpoint in each group to the required value.
2. Upload all the relay setpoints for all groups to a computer file or printer for a final inspection to confirm that
all setpoints are correct.
3. Set the relay clock (date and time) if IRIG-B is not used or unavailable.
4. Clear all historical values stored in the relay by entering
Yes
at the following messages.
Under subheading
S1 RELAY SETUP \ CLEAR DATA \
CLEAR ENERGY USE DATA?
CLEAR MAX DEMAND DATA?
CLEAR EVENT RECORDER DATA?
Under subheading
S1 RELAY SETUP \ INSTALLATION
RESET TRIP COUNTER DATA?
RESET ARCING CURRENT DATA?
5. Turn off all test voltages, and the power supply to the relay. Remove all test wiring connections, and
restore to normal any panel wiring disturbed for testing.
6. Perform a complete visual inspection to confirm that the relay is ready to be placed in service. Energize the
relay power supply circuit and check that the RELAY IN SERVICE indicator is on, and that the 8 SELF-
TEST WARNING indicator is off, establishing that the relay is operating normally.
7. For complete on-load checking of the relay, it is required to supply load current to the relay in a known
direction of power flow, with a known approximate value of power factor. The load current should be high
enough to be certain that the main CTs are connected correctly. The power system should be arranged to
fulfill these conditions before the feeder to which the relay is connected is energized. Advise operators of
the possibility of a trip on initial energization.
NOTE
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