Hioki PQ3198, Instruction Manual

Page: 274 / 304

A
10
Inrush current
Measurement method:
• Events will be detected when the current RMS Inrush exceeds the threshold value.
• For 400 Hz measurement, events are detected when the maximum of 4 RMS current values existing within the same
10 ms period (calculated values for one 400 Hz waveform) is greater than the threshold in the positive direction.
Event IN and OUT:
Event IN : Time of start of channel half-cycle voltage waveform in which the RMS current refreshed each half-cycle
was greater than the threshold.
Event OUT : Time at the start of the voltage half-cycle waveform in which the RMS current refreshed each half-cycle ex-
ceeded (threshold - hysteresis) in the negative direction
Thresh-
old
Hysteresis
Inrush
EVENT
IN
EVENT
OUT
0.5 s 29.5 s
The current RMS Inrush within the period between 0.5 s befrore and 29.5 s after the event, as fluctu-
ating data, is saved.
Event IN
Event OUT
Current waveform
Voltage waveform
HIOKI PQ3198A961-03