ERL F-PRO 5100, User Manual

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4 Protection Functions and Specifications
D02416R04.00 F-PRO 5100 User Manual 4-15
Breaker Monitoring The F-PRO breaker monitoring feature allows you to monitor the feeder break-
er(s) in detail. An accumulated I*I*t function and ten user-definable logic
statements can be used to determine the status of breaker wear and breaker per-
formance.
Breaker monitoring can be configured for measuring the clearing time, mech-
anism time, trip coil energized time, operations count, fault operations or other
user-defined conditions. Different users may require different feature sets to
monitor the breaker. The breaker monitoring functions are realized through the
Breaker Logic functions.
All associated breaker monitoring values are available in the terminal UI and
SCADA interfaces. You can reset or preset all associated breaker monitoring
values from the terminal UI interface. You can only reset all associated breaker
monitoring values from the terminal SCADA interfaces.
Breaker Logic
The Breaker Logic function is similar to a ProLogic function, but includes
some additional features specifically for breaker monitoring allowing different
users to design their own breaker monitoring features by building different
breaker logic statements. Breaker Logic has additional timers on every output
of the logic statement, a total of four timers are available; a counter (including
settable count limit) is available in the last logic gate position. The front panel
Alarm LED can be enabled, and the logged message can be configured either
when one of the four timers has expired or when the counter limit has been ex-
ceeded. A total of 10 Breaker Logic functions are available in the F-PRO.
The terminal UI and SCADA interfaces shows the status of each breaker logic
and associated counter. The terminal UI also includes the time of last reset/pre-
set.
Figure 4.14: Breaker Logic
For examples of breaker condition monitoring using Breaker Logic see “Set-
ting Examples” in Appendix L.