GE D60 - Page 581

GE Multilin D60 Line Distance Protection System 8-31
8 THEORY OF OPERATION 8.5 SINGLE-POLE TRIPPING
8
Table 8–26: PERMISSIVE SCHEME TRIP TABLE FOR 4-BIT CHANNELS
REMOTE DATA LOCAL DATA
BIT PATTERN RECEIVED REMOTE
DETERMINATION OF
FAULT TYPE
LOCAL DETERMINATION OF
FAULT TYPE
TRIP OUTPUT
RX1 RX2 RX3 RX4
0 0 0 1 MULTI-P AG Trip Phase A
0100 BG AG
0010 CG AG
1 0 0 0 AG AG, AB, ABG, CA, CAG, 3P,
Unrecognized
0 1 0 0 BG BG, AB, ABG, BC, BCG, 3P,
Unrecognized
Trip Phase B
1000 AG BG
0010 CG BG
0001 MULTI-P BG
0 0 1 0 CG CG, BC, BCG, CA, CAG, 3P,
Unrecognized
Trip Phase C
1000 AG CG
0100 BG CG
0001 MULTI-P CG
1 0 0 0 AG BC, BCG Trip Three Phases
0100 BG CA, CAG
0 0 1 0 CG AB, ABG
0 0 0 1 MULTI-P Unrecognized
Table 8–27: BLOCKING 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 RX2 RX3 RX4
0 0 0 0 Any while the INIT
signal was not
established
Trip as for single-bit
channel
1 1 1 0 MULTI-P AG DIR BLOCK TRIP A
1011 BG AG
1101 CG AG
0 1 1 1 AG AG, AB, ABG, CA, CAG, 3P,
Unrecognized
1 0 1 1 BG BG, AB, ABG, BC, BCG, 3P,
Unrecognized
DIR BLOCK TRIP B
0111 AG BG
1101 CG BG
1110 MULTI-P BG
1 1 0 1 CG CG, BC, BCG, CA, CAG, 3P,
Unrecognized
DIR BLOCK TRIP C
0111 AG CG
1011 BG CG
1110 MULTI-P CG
0 1 1 1 AG BC, BCG DIR BLOCK TRIP 3P
1011 BG CA, CAG
1 1 0 1 CG AB, ABG
1 1 1 0 MULTI-P Unrecognized