2-14
L30 Line Current Differential System
GE Multilin
2.2 PILOT CHANNEL RELAYING
2 PRODUCT DESCRIPTION
2
2.2.3 LOOPBACK TEST
This option allows the user to test the relay at one terminal of the line by
looping
the transmitter output to the receiver input;
at the same time, the signal sent to the remote will not change. A local loopback feature is included in the relay to simplify
single ended testing.
2.2.4 DIRECT TRANSFER TRIPPING
The L30 includes provision for sending and receiving a single-pole direct transfer trip (DTT) signal from current differential
protection between the L30 relays at the line terminals using the pilot communications channel. The user may also initiate
an additional eight pilot signals with an L30 communications channel to create trip, block, or signaling logic. A FlexLogic
operand, an external contact closure, or a signal over the LAN communication channels can be assigned for that logic.
Summary of Contents for L30
Page 10: ...x L30 Line Current Differential System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 L30 Line Current Differential System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 370: ...5 244 L30 Line Current Differential System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 464: ...A 10 L30 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 600: ...C 30 L30 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 610: ...D 10 L30 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 622: ...E 12 L30 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 634: ...F 12 L30 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 644: ...x L30 Line Current Differential System GE Multilin INDEX ...