Hioki 3196 - Page 136

8 Specifications
130
Quick Start Manual
Transient Overvoltage (impulse)
Measurement method
For detection, samples at 2 MHz are compared with calculation
samples
Measurement range
2000 Vpk for channels 1 to 4
Displayed items
Peak voltage: Value between the threshold and the maximum
value
Period: Period threshold is exceeded (max. 4 ms)
Minimum detectable
duration
0.5 µsec
Measurement accuracy
±5.0% rdg. ±20 V (at 1000 VDC and 700 Vrms, 100 kHz)
RMS Voltage
Measurement method
True RMS method
Data samples of each half of one cycle (256 points) of the volt-
age waveform are overlapped, and the RMS voltage is ob-
tained by calculating from one half cycle at 50 or 60 Hz
measurement.
When measuring 400 Hz, calculation is performed by averag-
ing the squares of the sample data consisting of 256 points
over 8 cycles of a waveform.
(the line-to-line voltage is used for three-phase 3-wire
(3P3W3M) systems, and the phase-to-neutral voltage is used
for three-phase 4-wire systems)
Voltage Swell
Measurement method
Detected from RMS voltage (value calculated for one wave-
form shifted over half a wave) at 50 or 60 Hz measurement.
For 400 Hz measurements, detection uses the value calculated
over one cycle.
Displayed items
Swell amplitude and duration
Voltage Dip
Measurement method
Detected from RMS voltage (value calculated for one wave-
form shifted over half a wave) at 50 or 60 Hz measurement.
For 400 Hz measurements, detection uses the value calculated
over one cycle.
Displayed items
Dip depth and duration
Interruption
Measurement method
Detected from RMS voltage (value calculated for one wave-
form shifted over half a wave) at 50 or 60 Hz measurement.
For 400 Hz measurements, detection uses the value calculated
over one cycle.
Displayed items
Interruption depth and duration