PKR39809-02

Harmonic Analysis Events

Alarm events are logged whenever any quantity exceeds its harmonic alarm threshold setting for the set Harmonic Threshold Time. A reset event is logged when a quantity that was in an alarm state, drops back below its harmonic alarm threshold value and stays there for the set Harmonic Threshold Time.

An extract from the Event Log below shows the events recorded when the V1 c-a voltage exceeds the 3rd harmonic voltage alarm threshold at 5:16:18.176 and then resets 5 s later. The reset event is followed almost immediately by another event recording the maximum 3rd harmonic sampled while the alarm state was active.

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