Hioki PQ3100 - Accuracy Specifications Details; Transient Overvoltage Measurement Specifications

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Input Specications/Output Specications/Measurement Specications
3. Accuracy specications
Conditions of
guaranteed accuracy
Guaranteed accuracy period: 1 year
Guaranteed accuracy period from adjustment made by Hioki: 1 year
Temperature and humidity for guaranteed accuracy: 23°C±5°C (73°F±5°F), 80% RH or
less
Warm-up time: at least 30 min
Power supply frequency range: 50 Hz/60 Hz ± 2 Hz
Power factor=1, common-mode voltage 0 V, specied after zero-adjustment
For AC measurement, add the following conditions:
Input of 10 V rms or more in the standard channel (U1)
Frequency Range: When the measurement frequency is set to 50 Hz: 40 Hz to 58 Hz
When the measurement frequency is set to 60 Hz: 51 Hz to 70 Hz
Temperature coefcient 0.1% f.s./°C
Effect of common mode
voltage
Within ±0.2% f.s.
(1000 V rms AC, 50 Hz/60 Hz, between voltage input and the instrument case)
Effect of external
magnetic
Within 1.5% f.s. (in a magnetic eld of 400 A rms/m AC, 50 Hz/60 Hz)
4. Transient overvoltage measurement specications Tran
Measurement method Detected using the sampled waveform from which the fundamental wave component
(50 Hz/60 Hz) (detected once for every waveform of fundamental voltage)
Displayed items Transient voltage value: Peak value of a waveform from which the fundamental
component is eliminated obtained over a 3-ms time
Transient width: Period during which threshold value is exceeded (up to 2 ms)
Worst
Maximum transient voltage value:
The maximum of peak values of a waveform from which the fundamental component
is eliminated obtained during the period from transient IN to transient OUT (leaving
channel information)
Transient period:
Period from transient IN to transient OUT
Transient count within the period:
Number of transients occurring during period from transient IN to transient OUT
(The number of transients includes ones occurring across every channel; however,
transients occurring simultaneously on multiple channels are counted as one)
(RMS transient: For testing purposes)
Measurement range ± 2.200 kV peak
Measurement band 5 kHz (−3 dB) to 40 kHz (−3 dB), specied at 20 V rms
Minimum detection
width
5 µs
Measurement accuracy ±5.0% rdg. ±1.0% f.s. (specied at 1000 V rms, 15 kHz)
Event threshold 2200.0 V
Set as an absolute value relative to the peak value (crest value) of the waveform from
which the fundamental component is eliminated.
Event IN In the state that the transient voltage is detected for the rst time during the 200-ms
aggregation period
Event occurrence time represents the time when a peak value exceeds the threshold
value.
The detected peak voltage and transient width are displayed.
Event OUT The lead of the 200-ms aggregation period in which no transient overvoltages were
detected on any one of the channels, following the transient event IN state.
The transient period (difference between the IN time and OUT time) is indicated.
Multiple-phase system
treatment
Begins when a transient overvoltage is detected for any one of the U1 to U4 channels
and ends when no transient overvoltage is detected for every channels.
Saved waveforms Event waveforms