GE Multilin
L90 Line Current Differential System
9-45
9 THEORY OF OPERATION
9.5 SINGLE-POLE TRIPPING
9
Table 9–28: UNBLOCKING SCHEME TRIP TABLE FOR FOUR-BIT CHANNELS
REMOTE DATA
LOCAL DATA
BIT PATTERN RECEIVED
REMOTE
DETERMINATION
OF FAULT TYPE
LOCAL
DETERMINATION OF
FAULT TYPE
TRIP OUTPUT
RX1
LOG1
RX2
LOG2
RX3
LOG3
RX4
LOG4
0
0
0
0
0
0
1
1
MULTI-P
AG
DCUB TRIP A
0
0
0
0
0
0
0
1
0
0
1
1
0
0
0
0
BG
0
0
0
1
0
0
0
0
0
0
0
0
1
1
0
0
CG
0
0
0
0
0
1
0
0
1
1
0
0
0
0
0
0
AG
AG, AB, ABG, CA,
CAG, 3P, unrecognized
0
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
BG
AG, AB, ABG, CA,
CAG, 3P, unrecognized
DCUB TRIP B
0
0
0
1
0
0
0
0
1
1
0
0
0
0
0
0
AG
BG
0
1
0
0
0
0
0
0
0
0
0
0
1
1
0
0
CG
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
MULTI-P
0
0
0
0
0
0
0
1
0
0
0
0
1
1
0
0
CG
CG, BC, BCG, CA,
CAG, 3P, unrecognized
DCUB TRIP C
0
0
0
0
0
1
0
0
1
1
0
0
0
0
0
0
AG
CG
0
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
BG
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
MULTI-P
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
AG
BC, BCG
DCUB TRIP 3P
0
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
BG
CA, CAG
0
0
0
1
0
0
0
0
0
0
0
0
1
1
0
0
CG
AB, ABG
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
MULTI-P
3P or unrecognized
0
0
0
0
0
0
0
1
Summary of Contents for UR Series L90
Page 652: ...A 16 L90 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 772: ...B 120 L90 Line Current Differential System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 802: ...C 30 L90 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 812: ...D 10 L90 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 824: ...E 12 L90 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 834: ...F 10 L90 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 846: ...xii L90 Line Current Differential System GE Multilin INDEX ...