GE D60 - Page 582

8-32 D60 Line Distance Protection System GE Multilin
8.5 SINGLE-POLE TRIPPING 8 THEORY OF OPERATION
8
Table 8–28: 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
RX1LOG1RX2LOG2RX3LOG3RX4LOG4
00000011 MULTI-P AG DCUB TRIP A
00000001
00110000 BG
00010000
00001100 CG
00000100
11000000 AG AG, AB, ABG, CA,
CAG, 3P, unrecognized
01000000
00110000 BG AG, AB, ABG, CA,
CAG, 3P, unrecognized
DCUB TRIP B
00010000
11000000 AG BG
01000000
00001100 CG
00000100
00000011 MULTI-P
00000001
00001100 CG CG, BC, BCG, CA,
CAG, 3P, unrecognized
DCUB TRIP C
00000100
11000000 AG CG
01000000
00110000 BG
00010000
00000011 MULTI-P
00000001
11000000 AG BC, BCG DCUB TRIP 3P
01000000
00110000 BG CA, CAG
00010000
00001100 CG AB, ABG
00000100
00000011 MULTI-P 3P or unrecognized
00000001