Sel 411L - Table 3.128 Circuit Breaker Failure Relay Word Bits

P.3.254
SEL-411L Relay Protection Manual Date Code 20151029
Protection Functions
Circuit Breaker Failure Protection
BFIC1 C-phase breaker failure initiate—BK1 SELOGIC equation NA
BFIDO1 breaker fail initiate dropout delay—BK1
(cycles)
0.000–1000 1.500
BFISP1 breaker fail initiate seal-in delay—BK1
(cycles)
0.000–1000 2.000
ENCBF1 No current/residual current logic—BK1 Y, N N
50RP1
b
Residual current pickup—BK1 (A) 0.25–50 1.00
NPU1
b
No current breaker failure delay—BK1
(cycles)
0.000–6000 12.000
BFIN1
b
No current breaker failure initiate—BK1 SELOGIC equation NA
ELCBF1 Load current breaker logic failure—BK1 Y, N N
50LP1
b
Phase load current pickup—BK1 (A) 0.25–50 0.50
LCPU1
b
Load pickup time delay—BK1 (cycles) 0.000–6000 9.000
BFILC1
b
Breaker failure load current
initiation—BK1
SELOGIC equation NA
EFOBF1 Breaker failure flashover logic—BK1 Y, N N
50FO1
c
Flashover current pickup—BK1 (A) 0.25–50 0.50
FOPU1
c
Flashover time delay—BK1 (cycles) 0.000–6000 9.000
BLKFOA1
c
Block A-phase flashover—BK1 SELOGIC equation NA
BLKFOB1
c
Block B-phase flashover—BK1 SELOGIC equation NA
BLKFOC1
c
Block C-phase flashover—BK1 SELOGIC equation NA
BFTR1 Breaker failure trip—BK1 SEL
OGIC equation NA
BFULTR1 Breaker failure unlatch trip—BK1 SEL
OGIC equation NA
a
For Circuit Breaker 2, replace 1 with 2 in the setting label.
b
Make setting when ENCBF1  N.
c
Make setting when EFOBF1  N.
Table 3.128 Circuit Breaker Failure Relay Word Bits (Sheet 1 of 2)
Name
a
Description
BFI3P1 Three-pole circuit breaker failure initiation
BFIA1 A-phase circuit breaker failure initiation
BFIB1 B-phase circuit breaker failure initiation
BFIC1 C-phase circuit breaker failure initiation
BFIN1 No current circuit breaker failure initiation
BFILC1 Load current breaker failure initiation
BFI3PT1 Three-pole circuit breaker failure extended initiation
BFIAT1 A-phase circuit breaker failure extended initiation
BFIBT1 B-phase circuit breaker failure extended initiation
BFICT1 C-phase circuit breaker failure extended initiation
FBFA1 A-phase circuit breaker failure
FBFB1 B-phase circuit breaker failure
FBFC1 C-phase circuit breaker failure
FBF1 Circuit breaker failure
Table 3.127 Circuit Breaker Failure Protection Logic Settings (Sheet 2 of 2)
Setting
a
Description Range
Default
(5 A)