GE D60 Instruction Manual page 367

8 THEORY OF OPERATION
Table 8–18: BLOCKING SCHEME TRIP TABLE FOR 2-BIT CHANNELS
REMOTE DATA
BIT PATTERN RECEIVED REMOTE DETERMINATION OF FAULT
RX1 RX2
0 1
1 0
0 0
1 0
0 0
0 1
0 0
0 1
1 0
0 0
0 1
1 0
d) FOUR-BIT CHANNELS
The TX1, TX2, TX3, TX4, RX1, RX2, RX3 and RX4 operands are used.
Table 8–19: PERMISSIVE SCHEME TRANSMIT CODES FOR 4-BIT CHANNELS
PHASE SELECTOR
DETERMINATION OF FAULT TYPE
AG
BG
CG
AB, ABG, BC, BCG, CA, CAG, 3P,
Unrecognized
Table 8–20: BLOCKING SCHEME TRANSMIT CODES FOR 4-BIT CHANNELS
PHASE SELECTOR
DETERMINATION OF FAULT
TYPE
AG
BG
CG
AB, ABG, BC, BCG, CA, CAG,
3P, Unrecognized
The action output is generated per the following tables.
GE Multilin
TYPE
AG, BC, BCG
BG, CA, CAG
CG, AB, ABG, 3P, Unrecognized
BG, CA, CAG
CG, AB, ABG, 3P, Unrecognized
AG, BC, BCG
CG, AB, ABG, 3P, Unrecognized
AG, BC, BCG
BG, CA, CAG
CG, AB, ABG, 3P, Unrecognized
AG, BC, BCG
BG, CA, CAG
BIT PATTERN TRANSMITTED
TX1 TX2
1 0
0 1
0 0
0 0
BIT PATTERN TRANSMITTED
TX1 TX2 TX3
0 1 1
1 0 1
1 1 0
1 1 1
D60 Line Distance Relay
8.5 SINGLE-POLE TRIPPING
LOCAL DATA
LOCAL DETERMINATION
OF FAULT TYPE
AG, AB, ABG CA, CAG, 3P
AG
AG
BG, AB, ABG, BC, BCG, 3P
BG
BG
CG, BC, BCG, CA, CAG
CG
CG
AB, ABG, 3P, Unrecognized
BC, BCG Unrecognized
CA, CAG Unrecognized
TX3 TX4
0 0
0 0
1 0
0 1
FLEXLOGIC™ OPRERANDS ASSERTED
TX4 TX1 STOP TX2 STOP TX3 STOP TX4 STOP
1 1 0
1 0 1
1 0 0
0 0 0
TRIP OUTPUT
DIR BLOCK TRIP A
DIR BLOCK TRIP B
DIR BLOCK TRIP C
DIR BLOCK TRIP 3P
0 0
0 0
1 0
0 1
8
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