Description - GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual

10.8 PLACING RELAY INTO SERVICE
10.8 PLACING RELAY INTO SERVICE
The procedure outlined in this subsection is explicitly concerned with the 745 relay and does not
include the operation/commissioning or placing into service of any equipment external to the 745.
Users should have already performed such tests as phasing of CTs, ratio measurement, verification
NOTE
of saturation curve, insulation test, continuity and resistance measurements.
1. Restore all settings and logic to the desired in-service values. Verify against the check list prepared while
testing the relay.
2. Upload all the 745 setpoints to a computer file and print for a final inspection to confirm that all setpoints
are correct.
3. Set the 745 clock (date and time).
4. Clear all historical values stored in the relay by entering "YES" at the following messages:
ACTUAL VALUES/A3 EVENT RECORDER/EVENT DATA CLEAR/CLEAR EVENT RECORDER
5. Remove all test connections, supplies, monitoring equipment from the relay terminals and relay panels
except for equipment to be used to monitor first transformer energization. Restore all panel wiring to nor-
mal except for those changes made intentionally for the first energization (blocking of some tripping func-
tions for example).
6. Perform a complete visual inspection to confirm that the 745 is ready to be placed into service. Ensure that
the relay is properly inserted in its case. Energize the relay power supply and verify that the RELAY IN
SERVICE indicator is ON, and that the SELF-TEST ERROR indicator is OFF, establishing that the relay is
operating normally.
10
10-46 745 Transformer Management Relay
10 COMMISSIONING

10.8.1 DESCRIPTION

GE Power Management