Hioki PQ3100 - Swell Measurement Specifications; Dip Measurement Specifications

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Input Specications/Output Specications/Measurement Specications
8. Swell measurement specications Swell
Measurement method Detected when the RMS voltage refreshed each half-cycle exceeds the threshold
value.
Displayed items Swell height: Maximum value for RMS voltage refreshed each half-cycle [V]
Swell duration: Period from when a swell is detected on any one of U1, U2, or U3 to
when a measured value fall below the value obtained by subtracting the hysteresis
from 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 When a RMS voltage refreshed each half-cycle exceeds the threshold value
Event OUT When a RMS voltage refreshed each half-cycle falls below the value calculated by
subtracting the hysteresis from the threshold value
Multiple-phase system
treatment
Begins when a swell is detected in any one of the channels among U1 to U3, and ends
when no swell is detected in every 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.
9. Dip measurement specications Dip
Measurement method Detected when the RMS voltage refreshed each half-cycle falls below the threshold
value.
Displayed items Dip depth: Minimum value of the RMS voltage refreshed each half-cycle [V]
Dip duration: Period from the time a U1 to U3 dip 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 When the RMS voltage refreshed each half-cycle falls below the threshold value
Event OUT When the RMS voltage refreshed each half-cycle exceeds the value calculated by
adding the hysteresis to the threshold value
Multiple-phase system
treatment
Begins when a dip is detected in any one of the channels among U1 to U3, and ends
when no dip 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.