Arcteq AQ-F210, Инструкция по эксплуатации

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Instruction manual –AQ F210 Feeder Protection IED 222 (292
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4.4.5 C
IRCUIT BREAKER WEAR
-
MONITOR
(CBW)
Circuit breaker wear (CBW) function is used for monitoring the circuit breaker lifetime before
maintenance needs due to interrupting currents and mechanical wearing. CBW function
uses the circuit breaker manufacturer given data for the breaker operating cycles in relation
to the current breaker has operated. CBW function is integrated into the controllable object
function and can be enabled and set under object function. CBW function is independent
function and initializes as separate independent instance which has own events and
settings not related to the object it is linked to.
Figure 4.4.5-102 Example of the circuit breaker interrupting life operations.
Function is triggered from the circuit breaker open command output and it monitors the
three phase current values in the tripping/opening moment. The maximum interrupting life
operations value per each phase are calculated from these currents which is cumulatively
deducted from the starting value of the operations. It is possible to set up two separate
alarm levels which are activated when the interrupting life operations value is below the
setting limit.
Outputs of the function are Alarm 1 and Alarm 2 signals. Setting parameters are static inputs
for the function which are changed only by user input in the setup phase of the function.
Inputs for the function are setting parameters and measured and pre-processed current
magnitudes and binary output signals. Function output signals can be used for direct IO
controlling and also for user logic programming. The function registers its operation into 12
last time-stamped registers and also generates general time stamped ON/OFF events to
the common event buffer from each of the two output signal. Time stamp resolution is 1ms.