13.2 Input Specifications/Output Specifications/Measurement Specifications
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(15) RMS current (Irms)
Measurement method AC+DC True RMS type
IEC61000-4-30 compliant: 10 cycles (50 Hz) or 1
2 cycles (60 Hz) (approx. 200 ms)
80 cycles (400 Hz) (approx. 200 ms)
Includes Zero-display range.
Displayed item RMS current for each channel and AVG (average) RMS current for multiple channels
(for more information,see "13.8 Calculation Formula" (p.231)
)
Measurement range See input specifications.
Measurement accuracy When the measurement frequency is set to 50 Hz/60 Hz: ±0.1% rdg.±0.1% f.s. + current sensor
accuracy
When the measurement frequency is set to 400 Hz: ±0.2% rdg.±0.6% f.s. + current sensor accu-
racy
Event threshold 0 to current range
Sense Set to 0 to range rating
Event IN Start of approx. 200 ms aggregation in which threshold was exceeded
Event OUT Start of approx. 200 ms aggregation in which reading was less than (threshold - hysteresis)
Multiple-phase system treatment Separate by channel
Saved waveforms Event waveforms
(16) Current DC value (Idc)
Measurement method Average value during approx. 200 ms aggregation synchronized to reference channel (CH4 only)
Includes Zero-display range.
Displayed item Current DC value
Measurement range Varies with current sensor used.
Measurement accuracy ±0.5% rdg.±0.5% f.s. + current sensor specifications accuracy
Not specified when using AC dedicated current sensor.
Event threshold 0 to (±400% of the current range)
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.
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
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