R.9.3
Date Code 20111215 Reference Manual SEL-421 Relay
ASCII Command Reference
Description of Commands
BRE n
The BRE n command displays the comprehensive circuit breaker report that
includes interrupted currents, number of operations, and mechanical and
electrical operating times, among many parameters. The relay displays a
listing of breaker monitor alarms with the breaker report.
BRE n C and BRE n R
The BRE n C and BRE n R commands clear/reset the circuit breaker monitor
data. Options C and R are identical.
BRE C A and BRE R A
The BRE C A and BRE R A commands clear all circuit breaker monitor data
for both circuit breakers from memory. Options C A and R A are identical.
BRE n H
Display the circuit breaker monitor history report with the BRE n H
command. The breaker history report is a summary of recent circuit breaker
operations.
BRE n P
Use the BRE n P command to preload existing circuit breaker contact wear,
operation counts, and accumulated currents to the circuit breaker monitor.
Tabl e 9. 6 B RE n Co mman d
a
a
Parameter n = 1 or 2, representing Circuit Breaker 1 or Circuit Breaker 2.
Command Description Access Level
BRE n Display the breaker report for the most recent
Circuit Breaker n operation.
1, B, P, A, O, 2
Table 9.7 BRE n C and BRE n R Commands
a
a
Parameter n = 1 or 2, representing Circuit Breaker 1 or Circuit Breaker 2.
Command Description Access Level
BRE n C Clear Circuit Breaker n data to zero. B, P, A, O, 2
BRE n R Clear Circuit Breaker
n data to zero. B, P, A, O, 2
Table 9.8 BRE C A and BRE R A Commands
Command Description Access Level
BRE C A Clear all circuit breaker data. B, P, A, O, 2
BRE R A Clear all circuit breaker data. B, P, A, O, 2
Tabl e 9. 9 B RE n H Co mma n d
Command Description Access Level
BRE n H
a
a
Parameter n = 1 or 2, representing Circuit Breaker 1 or Circuit Breaker 2.
Display history data for the last 128 Circuit
Breaker n operations.
1, B, P, A, O, 2
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