R.A.19
Date Code 20111215 Reference Manual SEL-421 Relay
Relay Word Bits
Alphabetic
TESTPUL Pulse test bit 235
TIRIG Assert while time is based on IRIG for both mark and value 217
TLED_1–
TLED_8
Target LED 1–8 1
TLED_9–
TLED_16
Target LED 9–16 2
TLED_17–
TLED_24
Target LED 17–24 280
TMB1A–
TMB8A
Channel A Transmit Mirrored Bit 1–8 230
TMB1B–
TMB8B
Channel B Transmit Mirrored Bit 1–8 232
TOP Trip during open pole timer is asserted 48
TPA Trip A 47
TPA1 Circuit Breaker 1 Trip A 47
TPA2 Circuit Breaker 2 Trip A 48
TPB Trip B 47
TPB1 Circuit Breaker 1 Trip B 47
TPB2 Circuit Breaker 2 Trip B 48
TPC Trip C 47
TPC1 Circuit Breaker 1 Trip C 48
TPC2 Circuit Breaker 2 Trip C 48
TQUAL1 Time quality, binary, add 1 when asserted
b
274
TQUAL2 Time quality, binary, add 2 when asserted
b
274
TQUAL4 Time quality, binary, add 4 when asserted
b
274
TQUAL8 Time quality, binary, add 8 when asserted
b
274
TREA1 Trigger Reason Bit 1 (SEL
OGIC Equation) 268
TREA2 Trigger Reason Bit 2 (SEL
OGIC Equation) 268
TREA3 Trigger Reason Bit 3 (SEL
OGIC Equation) 268
TREA4 Trigger Reason Bit 4 (SEL
OGIC Equation) 268
TRGTR Reset all active target relay words 228
TRIP Trip A or Trip B or Trip C 47
TRIPLED Trip LED 0
TRPRM Trip permission 45
TSOK Assert if current time source accuracy is sufficient for
synchronized phasor measurements
217
TSYNCA Assert while the time mark from time source or fixed internal
source is not synchronized
217
TUPDH Assert if update source is high-accuracy time source 217
TUTC1 Offset hours from UTC time, binary, add 1 if asserted 273
TUTC2 Offset hours from UTC time, binary, add 2 if asserted 273
TUTC4 Offset hours from UTC time, binary, add 4 if asserted 273
TUTC8 Offset hours from UTC time, binary, add 8 if asserted 273
Table A.1 Alphabetic List of Relay Word Bits (Sheet 19 of 21)
Name Description
Row
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