13.2 Input Specifications/Output Specifications/Measurement Specifications
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(33) Voltage waveform comparison (Wave)
Measurement method A judgment area is automatically generated from the previous 200 ms aggregation waveform, and
events are generated based on a comparison with the judgment waveform. Waveform judgments
are performed once for each 200 ms aggregation.
Comparison window width 10 cycles (50 Hz), 12 cycles (60 Hz), or 80 cycles (400 Hz)
Number of window points 4096 points synchronized with harmonic calculations
Displayed item Event detection only
Event threshold 0.0% to 100.0% of nominal voltage RMS value
Event IN First time at which waveform diverges from judgment area
Event OUT None
Multiple-phase system treatment Separate by channel
Saved waveforms Event waveforms
(34) ΔV10 Flicker (ΔV10)
Measurement method "13.8 Calculation Formula" (p.231), "Perceived flicker curve p.A18"
Calculated values are subject to 100 V conversion following gap-less measurement once each minute.
Standard voltage Automatic (with AGC)
Displayed item Δ V10 measured at one minute intervals, average value for one hour, maximum value for one hour,
fourth largest value for one hour, total (within the measurement interval) maximum value
Measurement range 0.000 V to 99.999 V
Measurement accuracy ±2% rdg.±0.01 V (with a fundamental wave of 100 V rms [50 Hz/60 Hz], a fluctuation voltage of 1
V rms [99.5 V rms to 100.5 V rms], and a fluctuation frequency of 10 Hz)
Threshold 0.00 V to 9.99 V Alarm output is generated when the reading for each minute is compared to the
threshold and found to be greater
Event threshold N/A
(35) IEC Flicker (Pst, Plt)
Measurement method IEC61000-4-15:2010 compliant, Calculated as described in "13.8 Calculation Formula" (p.231).
Pst is calculated after 10 minutes of continuous measurement and Plt after 2 hours of continuous
measurement.
Displayed item Short interval flicker Pst, long interval flicker Plt
Measurement range 0.0001 to 10000 PU broken into 1024 segments with a logarithm
Flicker filter Select 230 V lamp, 120 V lamp.
Measurement accuracy Pst ±5% rdg. (Specified within range 0.1000 to 20.000 using IEC61000-4-15 Class F1 perfor-
mance test.)
Event threshold N/A
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