Eaton EDR 3000, Инструкция по установке, эксплуатации и обслуживанию, Страница: 503 / 770

EDR-3000 IM02602003E
Commissioning of the Cold Load Pickup Module
Object to be tested:
Testing the Cold Load Pickup module
according to the configured operating mode:
•
I< (No current);
•
Bkr state (Breaker position);
•
I< (No Current) and Bkr state (Breaker position); and
•
I< (No Current) or Bkr state (Breaker position).
Necessary means:
•
Three-phase current source (if the Enable Mode depends on current);
•
Ampere meters (may be needed if the Enable Mode depends on current); and
•
Timer.
Test Example for Mode Bkr State (Breaker Position)
Mode I<: In order to test the tripping delay, start the timer then feed with an abruptly
changing current that is distinctly less than the I<-threshold. Measure the tripping
delay. In order to measure the drop-out ratio, feed an abruptly changing current that is
distinctly above the I<-threshold.
Mode I< and Bkr state: Combine the abruptly changing current(switching the current
ON and OFF) with the manual switching ON and OFF of the breaker.
Mode I< or Bkr state: Initially carry out the test with an abruptly changing current that
is switched ON and OFF (above and below the I<-threshold). Measure the tripping
times. Finally, carry out the test by manually switching the breaker ON and OFF.
•
The breaker has to be in the OFF position. There must not be any load current.
•
The Status Display of the device shows the signal "CLPU.E
NABLED
“=1.
•
The Status Display of the device shows the signal ”CLPU.I<“=1.
Testing the tripping delay and the resetting ratio:
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Manually switch the breaker ON and simultaneously start the timer.
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After the the » t Max Block (Release Delay)« timer has expired, the signal "CPLU.Enabled “=0 has to be false.
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Write down the measured time.
•
Manually switch the breaker OFF and simultaneously start the timer.
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