Sel SEL-421 - Relay Word Bits: Miscellaneous Elements; Relay Word Bits: Trip Logic Elements

R.A.31
Date Code 20111215 Reference Manual SEL-421 Relay
Relay Word Bits
Row List
41 SPSHOT1 Single-pole shot counter =1
41 SPSHOT2 Single-pole shot counter =2
41 3PSHOT0 Three-pole shot counter =0
41 3PSHOT1 Three-pole shot counter =1
41 3PSHOT2 Three-pole shot counter =2
41 3PSHOT3 Three-pole shot counter =3
41 3PSHOT4 Three-pole shot counter =4
42 SPOI Single-pole open interval timing
42 3POI Three-pole open interval timing
42 79STRT Relay in start state
42 TBBK Time between circuit breakers timing
42 BK1EXT Circuit Breaker 1 closed externally
42 BK2EXT Circuit Breaker 2 closed externally
42 SPOISC Single-pole open interval supervision condition
42 3POISC Three-pole open interval supervision condition
Table A.10 Relay Word Bits: Miscellaneous Elements
Row Name Description
43 SOTFE Switch-onto-fault enable
43 ILOP Internal loss-of-potential from ELOP setting
43 LOP Loss-of-potential detected
43 ZLOAD ZLOUT or ZLIN element picked up
43 ZLIN Load-encroachment “load out” element
43 ZLOUT Load-encroachment “load in” element
43 FIDEN Fault identification logic enabled
43 FSA A-phase sector fault (AG or BCG fault)
44 FSB B-phase sector fault (BG or CAG fault)
44 FSC C-phase sector fault (CG or ABG fault)
44 DFAULT Disables maximum/minimum metering and demand
metering when SEL
OGIC control equation FAULT asserts
44 ER Event report trigger equation (SEL
OGIC control equation)
44 EAFSRC Alternate frequency source (SEL
OGIC control equation)
44 * Reserved
44 * Reserved
44 * Reserved
Table A.11 Relay Word Bits: Trip Logic Elements (Sheet 1 of 2)
Row Name Description
45 RXPRM Receiver trip permission
45 COMPRM Communications-assisted trip permission
45 TRPRM Trip permission
Table A.9 Relay Word Bits: Reclosing Elements (Sheet 3 of 3)
Row Name Description