Appx.9
Event Detection Methods
Event IN and OUT
Event IN Time when the rst transient overvoltage is detected (the waveform
exceeded the threshold value) in an approx. 200 ms aggregation interval.
Event OUT Start time of approx. 200 ms aggregation in which no transient overvoltage
was detected for any channel within the rst approx. 200 ms aggregation
period following the transient event IN state.
Approx. 200 ms aggregation Approx. 200 ms aggregation Approx. 200 ms aggregation Approx. 200 ms aggregation
Event IN
Event
IN
Transient waveform
(including fundamental component)
The rst detected transient waveform after
event IN is saved.
Transient waveform
(including fundamental component)
The waveform with the largest transient
voltage value from the IN to the OUT point
is saved at event OUT.
Event period
Event OUT
Threshold Threshold
1 ms 2 ms 1 ms 2 ms
10
9
8
7
6
5
4
3
2
1
Appx. Ind.