13.3 Measurement Specifications
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Chapter 13 Specifications
RMS voltage (Urms)
Measurement method AC+DC True RMS type
IEC61000-4-30 compliant: 10 cycles (50 Hz) or 12 cycles (60 Hz) (approx. 200 ms aggregation)
During 400 Hz measurement, calculated from 80 cycles (approx. 200 ms aggregation)
When set to 3P3W3M/3P4W/3P4W2.5E, the phase voltage/line voltage setting is applied to the
RMS voltage Urms.
Includes zero suppression.
Sampling frequency 200 kHz
Displayed item RMS voltage for each channel and AVG (average) RMS voltage for multiple channels
(for more information, "13.10 Calculation Formula" (p.198))
Measurement range, resolution 600.00 V
Measurement band See RMS frequency characteristics.
Measurement accuracy When input is 10% to 150% of Udin and 1.666%f.s. to 110%f.s.
(Up to 660V when Udin>440V):±0.1% of the nominal voltage.
Otherwise:±0.2% rdg.±0.08%f.s.
When the measurement frequency is set to 400 Hz: 0.2% rdg.0.16%f.s.
Event threshold Upper and lower limits set separately from 0 to (lower limit) to (upper limit) to 780 V (value before
setting VT ratio)
When set to 3P3W3M/3P4W/3P4W2.5E, the phase voltage/line voltage setting is applied.
Sense Set from 0 to 600 V.
Event IN Start of the approx. 200 ms aggregation during which the reading was greater than the upper limit
or less than the lower limit
Event OUT Start of the approx. 200 ms aggregation during which the reading was less than (upper limit - hys-
teresis) after being greater than the upper limit or was greater than (lower limit + hysteresis) after
being less than the lower limit
Multiple-phase system treatment Separate by channel
Saved waveforms Event waveforms
Voltage DC value (Udc)
Measurement method Average value during approx. 20 ms aggregation synchronized with the reference channel (CH4 only)
Includes zero suppression.
Sampling frequency 200 kHz
Displayed item Voltage DC value
Measurement range, resolution 600.00 V
Measurement band See RMS frequency characteristics.
Measurement accuracy 0.3% rdg.0.08%f.s.
Event threshold 0 V to 1,200 V
The difference between the positive and negative waveform peak values in the 200 ms aggrega-
tion is compared to the threshold to generate DC fluctuation events.
Sense Set from 0 to 600 V.
Event IN Start of the 200 ms aggregation in which the threshold was exceeded
Event OUT Start of the first 200 ms aggregation after the IN state in which the threshold was not exceed
Multiple-phase system treatment None
Saved waveforms Event waveforms