Schweitzer Engineering Laboratories SEL-421-4 - Table 11.9 Relay Word Bits: Reclosing Elements

11.41
Date Code 20171021 Instruction Manual SEL-421 Relay
Relay Word Bits
Row Lists
39 FAST1 fs1 > fp
39 SLOW1 fs1 < fp
39 BSYNBK1 Block synchronism check for Circuit Breaker 1
39 59VDIF1 Circuit Breaker 1 synchronizing voltage difference less than limit
39 * Reserved
39 * Reserved
39 * Reserved
40 59VS2 VS2 within “healthy voltage” window
40 25ENBK2 Circuit Breaker 2 synchronism-check element enable
40 SFZBK2 Circuit Breaker 2 slip frequency less than 5 mHz
40 SFBK2 5 mHz  Circuit Breaker 2 slip frequency < 25 SFBK2
40 25W1BK2 Circuit Breaker 2 Angle 1 within Window 1
40 25W2BK2 Circuit Breaker 2 Angle 2 within Window 2
40 25A1BK2 Circuit Breaker 2 voltages within Synchronism Angle 1
40 25A2BK2 Circuit Breaker 2 voltages within Synchronism Angle 2
41 FAST2 fs2 > fp
41 SLOW2 fs2 < fp
41 BSYNBK2 Block synchronism check for Circuit Breaker 2
41 59VDIF2 Circuit Breaker 2 synchronizing voltage difference less than limit
41 * Reserved
41 * Reserved
41 * Reserved
41 * Reserved
Table 11.9 Relay Word Bits: Reclosing Elements (Sheet 1 of 3)
Row Name Description
42 SPRI Single-pole reclose initiation (SELOGIC control equation)
42 SPARC Single-pole reclose initiate qualified
42 SPLSHT Single-pole reclose last shot
42 SPOBK1 Single-pole open Circuit Breaker 1
42 SPOBK2 Single-pole open Circuit Breaker 2
42 3PRI Three-pole reclose initiation (SEL
OGIC control equation)
42 3PARC Three-pole reclose initiate qualified
42 3POBK1 Three-pole open Circuit Breaker 1
43 3POBK2 Three-pole open Circuit Breaker 2
43 3POLINE Three-pole open line
43 3PLSHT Three-pole reclose last shot
43 BK1RS Circuit Breaker 1 in ready state
43 BK2RS Circuit Breaker 2 in ready state
43 79CY1 Relay in single-pole reclose cycle state
43 79CY3 Relay in three-pole reclose cycle state
Table 11.8 Relay Word Bits: Synchronism-Check Elements (Sheet 2 of 2)
Row Name Description