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8.11
Date Code 20171021
Instruction Manual
SEL-421 Relay
Settings
Breaker Monitor Settings
Table 8.28
Breaker 1 Electrical Operating Time (and Breaker 2 Electrical
Operating Time)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt
Default Value
B1ESTRT
Electrical Slow Trip Alarm Threshold—BK1 (1–999 ms)
50
B1ESCLT
Electrical Slow Close Alarm Threshold—BK1 (1–999 ms)
120
Table 8.29
Breaker 1 Mechanical Operating Time (and Breaker 2 Mechanical
Operating Time)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt
Default Value
B1MSTRT
Mechanical Slow Trip Alarm Threshold—BK1 (1–999 ms)
50
B1MSCLT
Mechanical Slow Close Alarm Threshold—BK1 (1–999 ms)
120
Table 8.30
Breaker 1 Pole Scatter and Pole Discrepancy (and Breaker 2 Pole
Scatter and Pole Discrepancy)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt
Default Value
B1PSTRT
Pole Scatter Trip Alarm Threshold—BK1 (1–999 ms)
20
B1PSCLT
Pole Scatter Close Alarm Threshold—BK1 (1–999 ms)
20
B1PDD
Pole Discrepancy Time Delay—BK1 (1–9999 ms)
1400
E1PDCS
Pole Discrepancy Current Supervision—BK1 (Y, N)
N
Table 8.31
Breaker 1 Inactivity Time Elapsed (and Breaker 2 Inactivity Time
Elapsed)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt
Default Value
B1ITAT
Inactivity Time Alarm Threshold—BK1 (N, 1–9999 days)
365
Table 8.32
Breaker 1 Motor Running Time (and Breaker 2 Motor Running Time)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt
Default Value
B1MRTIN
Motor Run Time Contact Input—BK1 (SEL
OGIC
Equation)
NA
B1MRTAT
Motor Run Time Alarm Threshold—BK1 (1–9999 seconds)
25
Table 8.33
Breaker 1 Current Interrupted (and Breaker 2 Current Interrupted)
Setting
a
a
Replace 1 with 2 in the setting and prompt for Breaker 2 settings.
Prompt
Default Value
B1KAIAT
kA Interrupt Capacity Alarm Threshold—BK1 (N, 1–100%)
90
B1MKAI
Maximum kA Interrupt Rating—BK1 (1–999 kA)
50
Summary of Contents for SEL-421-4
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