GE D90 Plus Instruction Manual page 668

SINGLE-POLE TRIPPING
Single-bit channels
658
Single-bit communication channels for pilot-aided schemes use the RX1 and TX1 operands
for each scheme. The fault data is coded as shown in the following tables.
Table 28: Permissive scheme transmit codes for single-bit channels
Phase selector determination of fault type
AG, BG, CG, ABG, BCG, CAG, AB, BC, CA, and 3P
Unrecognized or AR FORCE 3P TRIP
None of the above
Table 29: Blocking scheme transmit codes for single-bit channels
Phase selector determination of fault type
AG, BG, CG, ABG, BCG, CAG, AB, BC, CA, and 3P
Unrecognized or AR FORCE 3P TRIP
None of the above
Table 30: Unblocking scheme transmit codes for single-bit channels
Phase selector determination of fault type
AG, BG, CG, ABG, BCG, CAG, AB, BC, CA, and 3P
Unrecognized or AR FORCE 3P TRIP
None of the above
Table 31: Permissive scheme trip table for single-bit channels
Remote data
Bit pattern Remote determination
of fault type
RX1
1 Any
1 Any
1 Any
1 Any
Table 32: Blocking scheme trip table for single-bit channels
Remote data
Bit pattern Remote determination
of fault type
RX1
0 Any
0 Any
0 Any
0 Any
Local data
Local determination of fault type
AG fault
BG fault
CG fault
ABG, BCG, CAG, AB, BC, CA, or 3P fault,
or unrecognized
Local data
Local determination of fault type
AG fault
BG fault
CG fault
ABG, BCG, CAG, AB, BC, CA, or 3P fault,
or unrecognized
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 15: THEORY OF OPERATION
Bit pattern
TX1
1
1
0
Bit pattern
TX1
0
0
1
Bit pattern
TX1
1
1
0
Trip output
TRIP PHASE A
TRIP PHASE B
TRIP PHASE C
TRIP 3-POLE
Trip output
TRIP PHASE A
TRIP PHASE B
TRIP PHASE C
TRIP 3-POLE