GE D60 Instruction Manual page 366

8.5 SINGLE-POLE TRIPPING
Table 8–14: BLOCKING SCHEME TRIP TABLE FOR 1-BIT CHANNELS
BIT PATTERN RECEIVED
RX1
0
0
0
0
The scheme initiates a three-phase trip if the Phase Selector fails to recognize the fault type or after the AR FORCE 3P
TRIP operand is asserted.
c) TWO-BIT CHANNELS
The TX1, TX2, RX1 and RX2 operands are used and fault data is coded per the following tables.
Table 8–15: PERMISSIVE SCHEME TRANSMIT CODES FOR 2-BIT CHANNELS
PHASE SELECTOR DETERMINATION
OF FAULT TYPE
AG, BC, BCG
BG, CA, CAG
CG, AB, ABG, 3P, Unrecognized
Table 8–16: BLOCKING SCHEME TRANSMIT CODES FOR 2-BIT CHANNELS
PHASE SELECTOR DETERMINATION
OF FAULT TYPE
AG, BC, BCG
BG, CA, CAG
CG, AB, ABG, 3P
CG, AB, ABG, 3P, Unrecognized
The action output is generated per the following tables.
Table 8–17: PERMISSIVE SCHEME TRIP TABLE FOR 2-BIT CHANNELS
BIT PATTERN RECEIVED
8
RX1 RX2
1 0
0 1
1 1
0 1
1 1
1 0
1 1
1 0
0 1
1 1
1 0
0 1
8-24
REMOTE DATA
REMOTE DETERMINATION
OF FAULT TYPE
Any
Any
Any
Any
BIT PATTERN TRANSMITTED
TX1
1
0
1
BIT PATTERN TRANSMITTED
TX1
0
1
0
0
REMOTE DATA
REMOTE DETERMINATION OF FAULT
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
D60 Line Distance Relay
8 THEORY OF OPERATION
LOCAL DATA
LOCAL DETERMINATION OF
FAULT TYPE
AG Fault
BG Fault
CG Fault
AB, ABG, BC, BCG, CA, CAG,
3P, Unrecognized
TX2
0
1
1
FLEXLOGIC™ OPERANDS
ASSERTED
TX2 TX1 STOP TX2 STOP
1 1
0 0
0 1
0 1
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
TRIP OUTPUT
Trip Phase A
Trip Phase B
Trip Phase C
Trip Three Phases
0
1
1
1
TRIP OUTPUT
Trip Phase A
Trip Phase B
Trip Phase C
Trip Three Phases
GE Multilin