R.A.17
Date Code 20111215 Reference Manual SEL-421 Relay
Relay Word Bits
Alphabetic
RTCCFGA RTC Configuration Complete, Channel A 270
RTCCFGB RTC Configuration Complete, Channel B 270
RTCDLYA RTC Delay Exceeded, Channel A 271
RTCDLYB RTC Delay Exceeded, Channel B 271
RTCENA Valid Remote Synchrophasors Received on Channel A 271
RTCENB Valid Remote Synchrophasors Received on Channel B 271
RTCROK Valid Aligned RTC Data Available on All Enabled Channels 271
RTCROKA Valid Aligned RTC Data Available on Channel A 271
RTCROKB Valid Aligned RTC Data Available on Channel B 271
RTCSEQA RTC Data In Sequence on Channel B 270
RTCSEQB RTC Data In Sequence on Channel B 270
RTD01ST RTD Status for Channel 1 83
RTD02ST RTD Status for Channel 2 83
RTD03ST RTD Status for Channel 3 83
RTD04ST RTD Status for Channel 4 83
RTD05ST RTD Status for Channel 5 83
RTD06ST RTD Status for Channel 6 83
RTD07ST RTD Status for Channel 7 83
RTD08ST RTD Status for Channel 8 83
RTD09ST RTD Status for Channel 9 84
RTD10ST RTD Status for Channel 10 84
RTD11ST RTD Status for Channel 11 84
RTD12ST RTD Status for Channel 12 84
RTDCOMF RTD Communication Failure 84
RTDFL RTD device Failure 84
RTDIN State of RTD contact input 84
RTS3P1 Circuit Breaker 1 current-supervised three-pole retrip 58
RTS3P2 Circuit Breaker 2 current-supervised three-pole retrip 64
RTSA1 Circuit Breaker 1 current-supervised A-phase retrip 59
RTSA2 Circuit Breaker 2 current-supervised A-phase retrip 65
RTSB1 Circuit Breaker 1 current-supervised B-phase retrip 59
RTSB2 Circuit Breaker 2 current-supervised B-phase retrip 65
RTSC1 Circuit Breaker 1 current-supervised C-phase retrip 59
RTSC2 Circuit Breaker 2 current-supervised C-phase retrip 65
RXPRM Receiver trip permission 45
SALARM Software alarm 198
SERCA
a
Series-compensated line A-phase output 16
SERCAB
a
Series-compensated line AB-phase output 16
SERCB
a
Series-compensated line B-phase output 16
SERCBC
a
Series-compensated line BC-phase output 16
SERCC
a
Series-compensated line C-phase output 16
Table A.1 Alphabetic List of Relay Word Bits (Sheet 17 of 21)
Name Description
Row
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