1-20
L60 Line Phase Comparison System
GE Multilin
1.5 USING THE RELAY
1 GETTING STARTED
1
1.5.7 COMMISSIONING
The L60 requires minimal maintenance after it is commissioned into service. Since the L60 is a microprocessor-based
relay, its characteristics do not change over time. As such, no further functional tests are required.
The L60 performs a number of continual self-tests and takes the necessary action in case of any major errors (see the
Relay Self-tests
section in chapter 7). However, it is recommended that L60 maintenance be scheduled with other system
maintenance. This maintenance can involve in-service, out-of-service, or unscheduled maintenance.
In-service maintenance:
1.
Visual verification of the analog values integrity, such as voltage and current (in comparison to other devices on the
corresponding system).
2.
Visual verification of active alarms, relay display messages, and LED indications.
3.
LED test.
4.
Visual inspection for any damage, corrosion, dust, or loose wires.
5.
Event recorder file download with further events analysis.
Out-of-service maintenance:
1.
Check wiring connections for firmness.
2.
Analog values (currents, voltages, RTDs, analog inputs) injection test and metering accuracy verification. Calibrated
test equipment is required.
3.
Protection elements setting verification (analog values injection or visual verification of setting file entries against relay
settings schedule).
4.
Contact inputs and outputs verification. This test can be conducted by direct change of state forcing or as part of the
system functional testing.
5.
Visual inspection for any damage, corrosion, or dust.
6.
Event recorder file download with further events analysis.
7.
LED Test and pushbutton continuity check.
Unscheduled maintenance, such as a disturbance causing system interruption:
1.
View the event recorder and oscillography or fault report for correct operation of inputs, outputs, and elements.
If it is concluded that the relay or one of its modules is of concern, contact GE Multilin for service.
Summary of Contents for L60
Page 10: ...x L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Page 57: ...GE Multilin L60 Line Phase Comparison System 2 27 2 PRODUCT DESCRIPTION 2 3 SPECIFICATIONS 2 ...
Page 58: ...2 28 L60 Line Phase Comparison System GE Multilin 2 3 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 482: ...6 26 L60 Line Phase Comparison System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 554: ...10 8 L60 Line Phase Comparison System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Page 674: ...B 110 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 704: ...C 30 L60 Line Phase Comparison System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 720: ...E 10 L60 Line Phase Comparison System GE Multilin E 1 PROTOCOL APPENDIX E E ...
Page 732: ...F 12 L60 Line Phase Comparison System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Page 742: ...H 8 L60 Line Phase Comparison System GE Multilin H 3 WARRANTY APPENDIX H H ...