37-6 9424200996
Breaker Monitoring BE1-11m
be read or changed through the communication ports using BESTCOMSPlus. Use the Metering Explorer
to open the Reports, Breaker Monitor screen shown in Figure 37-6.
Figure 37-6. Breaker Report Screen
Breaker Operate Time Monitoring
The breaker operate time monitor tracks the time from when a trip output occurs (defined by the Trip logic
expression) to when the fast current detector observes that current is zero in all three breaker poles. This
time is reported as a line in the fault summary reports. See the Fault Reporting chapter for more
information about the Trip logic expression and fault summary reports.
Breaker operate time can be monitored to give an alarm when the value exceeds a threshold. Breaker
Alarms provides more information about this feature.
Breaker Alarms
Three alarm points are included in the programmable alarms for checking breaker monitoring functions.
Each alarm point can be programmed to monitor any of the three breaker monitoring functions,
operations counter, interruption duty, or clearing time. An alarm threshold can be programmed to monitor
each function. Alternately, three different thresholds can be programmed to monitor one of the monitored
functions.
Breaker Alarms Settings
BESTCOMSPlus Navigation Path: Settings Explorer, Alarm Configuration, Breaker Monitoring
HMI Navigation Path: Settings Explorer, Alarm Configuration, Breaker Monitor
Settings are made using BESTCOMSPlus. Use the Settings Explorer to open the Alarm Configuration,
Breaker Monitoring tree branch shown in Figure 37-4.
Using the pull-down menus and settings boxes, make the application-appropriate settings to the breaker
alarms.
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