11.15
Date Code 20171021 Instruction Manual SEL-421 Relay
Relay Word Bits
Alphabetical List
BFILC1 Circuit Breaker 1 load current circuit breaker failure initiation 68
BFILC2 Circuit Breaker 2 load current circuit breaker failure initiation 74
BFIN1 Circuit Breaker 1 no current circuit breaker failure initiation 68
BFIN2 Circuit Breaker 2 no current circuit breaker failure initiation 74
BFTR1 Circuit breaker failure trip, Circuit Breaker 1 (SEL
OGIC control equation) 70
BFTR2 Circuit breaker failure trip, Circuit Breaker 2 (SEL
OGIC control equation) 76
BFTRIP1 Circuit Breaker 1 failure trip output asserted 70
BFTRIP2 Circuit Breaker 2 failure trip output asserted 76
BFULTR1 Circuit breaker failure unlatch trip, Circuit Breaker 1 (SEL
OGIC control equation) 70
BFULTR2 Circuit breaker failure unlatch trip, Circuit Breaker 2 (SEL
OGIC control equation) 76
BK1BFT Indicates Circuit Breaker 1 breaker failure trip 224
BK1CFT Circuit Breaker 1 close failure delay timed out 46
BK1CL Circuit Breaker 1 close command 44
BK1CLSS Circuit Breaker 1 in close supervision state 46
BK1CLST Circuit Breaker 1 close supervision timer timed out 46
BK1EXT Circuit Breaker 1 closed externally 50
BK1LO Circuit Breaker 1 in lockout state 43
BK1RCIP Circuit Breaker 1 reclaim in progress (lockout state) 48
BK1RS Circuit Breaker 1 in ready state 43
BK2BFT Indicates Circuit Breaker 2 breaker failure trip 224
BK2CFT Circuit Breaker 2 close failure delay timed out 46
BK2CL Circuit Breaker 2 close command 44
BK2CLSS Circuit Breaker 2 in close supervision state 46
BK2CLST Circuit Breaker 2 close supervision timer timed out 46
BK2EXT Circuit Breaker 2 closed externally 50
BK2LO Circuit Breaker 2 in lockout state 44
BK2RCIP Circuit Breaker 2 reclaim in progress (lockout state) 48
BK2RS Circuit Breaker 2 in ready state 43
BLKFOA1 Circuit Breaker 1 block A-Phase flashover detection 69
BLKFOA2 Circuit Breaker 2 block A-Phase flashover detection 75
BLKFOB1 Circuit Breaker 1 block B-Phase flashover detection 69
BLKFOB2 Circuit Breaker 2 block B-Phase flashover detection 75
BLKFOC1 Circuit Breaker 1 block C-Phase flashover detection 69
BLKFOC2 Circuit Breaker 2 block C-Phase flashover detection 75
BLKLPTS Block low-priority source from updating relay time 210
BM1CLSA Circuit breaker monitor A-Phase close, Circuit Breaker 1 (SEL
OGIC control equation) 83
BM1CLSB Circuit breaker monitor B-Phase close, Circuit Breaker 1 (SEL
OGIC control equation) 83
BM1CLSC Circuit breaker monitor C-Phase close, Circuit Breaker 1 (SEL
OGIC control equation) 83
BM1TRPA Circuit breaker monitor A-Phase trip, Circuit Breaker 1 (SEL
OGIC control equation) 83
BM1TRPB Circuit breaker monitor B-Phase trip, Circuit Breaker 1 (SEL
OGIC control equation) 83
BM1TRPC Circuit breaker monitor C-Phase trip, Circuit Breaker 1 (SEL
OGIC control equation) 83
Table 11.1 Alphabetic List of Relay Word Bits (Sheet 15 of 34)
Name Description Row
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