Hioki PQ3100 - Interruption Measurement Specifications; Inrush Current Measurement Specifications

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Input Specications/Output Specications/Measurement Specications
10. Interruption measurement specications Intrpt
Measurement method Detected when the RMS voltage refreshed each half-cycle falls below the threshold
value.
Displayed items Interruption depth: Worst value for RMS voltage refreshed each half-cycle [V]
Interruption duration: Period from the time a U1 to U3 interruption is detected until the
reading exceeds the value obtained by adding the hysteresis to the threshold value.
Measurement range 1000.0 V
Measurement accuracy Same as for RMS voltage refreshed each half-cycle
Duration: Within a half-cycle time from the starting time and another half-cycle until the
end time
Event threshold Percentage with respect to declared input voltage
Event IN Starting time of a half-cycle voltage waveform to which an inrush current belongs on
each channel when it exceeds the threshold value
Event OUT Starting time of a half-cycle voltage waveform to which an inrush current belongs when
it falls below the value calculated by subtracting the hysteresis from the threshold value
Multiple-phase system
treatment
Begins when an interruption is detected in any one of the channels among U1 to U3,
and ends when no interruption is detected in any of the channels.
Saved waveforms Event waveforms
Trend Data The data of RMS voltage refreshed each half-cycle and RMS current refreshed each
half-cycle obtained in the period between 0.5 sec prior to the EVENT IN and 29.5 sec
after the EVENT IN are saved.
11. Inrush current measurement specications Inrush
Measurement method Detected by observing the RMS current calculated using data obtained over a 1-cycle
time refreshed each half-cycle.
(synchronized with voltage of same channel)
Displayed items Maximum current of the RMS current measured above
Measurement range Depends on the current sensor in use
See “14.8 Range Conguration and Combination Accuracy” (p. 188).
Measurement accuracy ± 0.3% rdg. ± 0.3% f.s. + (current sensor accuracy)
(Note: While using 2000 A range of Model CT7742, f.s. tolerance should be 2.5 times
the value)
Event threshold From 0 to the value of the current range
Event IN Time at the start of the half wave of voltage of each channel for which the inrush
current exceeds the threshold value
Event OUT Start of the voltage half-wave waveform for which the inrush current falls below the
value obtained by subtracting the hysteresis from the threshold value in the negative
direction.
Multiple-phase system
treatment
None
Saved waveforms Event waveforms
Trend Data The data of inrush RMS current obtained in the period between 0.5 sec prior to the
EVENT IN and 29.5 sec after the EVENT IN is saved.
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Specications