11.42
SEL-421 Relay Instruction Manual Date Code 20171021
Relay Word Bits
Row Lists
43 BK1LO Circuit Breaker 1 in lockout state
44 BK2LO Circuit Breaker 2 in lockout state
44 BK1CL Circuit Breaker 1 close command
44 BK2CL Circuit Breaker 2 close command
44 LEADBK0 No lead circuit breaker
44 LEADBK1 Lead circuit breaker = Circuit Breaker 1
44 LEADBK2 Lead circuit breaker = Circuit Breaker 2
44 FOLBK0 No follower circuit breaker
44 FOLBK1 Follower circuit breaker = Circuit Breaker 1
45 FOLBK2 Follower circuit breaker = Circuit Breaker 2
45 NBK0 No circuit breakers active in reclose scheme
45 NBK1 One circuit breaker active in reclose scheme
45 NBK2 Two circuit breakers active in reclose scheme
45 SP1CLS Single-pole Circuit Breaker 1 reclose supervision (SEL
OGIC control equation)
45 SP2CLS Single-pole Circuit Breaker 2 reclose supervision (SEL
OGIC control equation)
45 3P1CLS Three-pole Circuit Breaker 1 reclose supervision (SEL
OGIC control equation)
45 3P2CLS Three-pole Circuit Breaker 2 reclose supervision (SEL
OGIC control equation)
46 BK1CFT Circuit Breaker 1 close failure delay timed out
46 BK2CFT Circuit Breaker 2 close failure delay timed out
46 BK1CLSS Circuit Breaker 1 in close supervision state
46 BK2CLSS Circuit Breaker 2 in close supervision state
46 BK1CLST Circuit Breaker 1 close supervision timer timed out
46 BK2CLST Circuit Breaker 2 close supervision timer timed out
46 ULCL1 Unlatch closing for Circuit Breaker 1 (SEL
OGIC control equation)
46 ULCL2 Unlatch closing for Circuit Breaker 2 (SEL
OGIC control equation)
47 LLDB1 Live Line Dead Bus 1
47 LLDB2 Live Line Dead Bus 2
47 DLLB1 Dead Line Live Bus 1
47 DLLB2 Dead Line Live Bus 2
47 DLDB1 Dead Line Dead Bus 1
47 DLDB2 Dead Line Dead Bus 2
47 R3PTE Recloser three-pole trip enable
47 R3PTE1 Recloser three-pole trip enable Circuit Breaker 1
48 R3PTE2 Recloser three-pole trip enable Circuit Breaker 2
48 BK1RCIP Circuit Breaker 1 reclaim in progress (lockout state)
48 BK2RCIP Circuit Breaker 2 reclaim in progress (lockout state)
48 SPRCIP Single-pole reclaim in progress
48 3PRCIP Three-pole reclaim in progress
48 2POBK1 Two poles open Circuit Breaker 1
48 2POBK2 Two poles open Circuit Breaker 2
48 * Reserved
Table 11.9 Relay Word Bits: Reclosing Elements (Sheet 2 of 3)
Row Name Description
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