Hioki 3196 - Items

12.2 Measurement Specifications
186
RMS Current
Measurement method
True RMS type
Measurement at 256 points per cycle about once every 10 cycles at 50 Hz
or every 12 cycles at 60 Hz (approximately every 200 ms).
Measurement at 256 points per 8 cycles about once every 80 cycles at 400
Hz (approximately every 200 ms).
Item
The RMS current value for each channel or the AVE (average) RMS current
value for multiple channels (For details, see the formula.(page 201))
Measurement range
CH1 to 4
When using a 0.1 mV/A sensor..................... 500.00A/5000.0 A rms
When using a 1 mV/A sensor, 9661.............. 50.000A/500.00 A rms
When using a 1 mV/A sensor, 9660.............. 50.000A/100.00 A rms
When using a 10 mV/A sensor, 9694............ 5.0000A/50.000 A rms
When using a 100 mV/A sensor.................... 500.00 mA/5.0000 A rms
When using a 9667sensor, 5000 A range..... 500.00A/5.0000 kA rms
When using a 9667sensor, 500 A range....... 50.000A/500.00 A rms
When using a 9669 sensor ........................... 100.00A/1.0000 kA rms
Range selection
Manual range (Same operation switches the range for CH1 to 3.)
Measurement accuracy
±0.2% rdg. ±0.1% f.s. + clamp sensor specification accuracy (50/60 Hz)
±0.2% rdg. ±0.6% f.s. + clamp sensor specification accuracy (400 Hz)
Crest factor
Less than 4 (for full-scale input)
Transient Overvoltage (impulse)
Measurement method
For detection, samples at 2 MHz are compared with calculation samples
Measurement range
CH1 to 4: ±2000 V pk
Displayed items
Peak voltage: This value exceeds the threshold and can be up to the max-
imum value.
Period: Period threshold is exceeded (max. 4 ms)
Minimum detectable dura-
tion
0.5μs
Measurement accuracy
±5.0% rdg. ±20 V (Conforms to 1000 V/DC or 700 V rms/100 kHz.)
Frequency range
DC to 200 kHz (-3 dB) (Conforms to 20 V rms)
Restrictions on saving
waveforms
Saves waveforms that have a maximum transient overvoltage value (abso-
lute value) within the basic voltage wave. (Waveforms in which the peak
point is the center.)
RMS Voltage (value calculated for one waveform shifted over half a wave)
Measurement method
True RMS type
Data samples of each half of one cycle (256 points) of the voltage waveform
are overlapped, and the RMS voltage is obtained by calculating from one
half cycle.
(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)
When measuring at 400 Hz, calculation is performed by averaging the
squares of the sample data consisting of 256 points over 8 cycles of a wave-
form.
Limitation
At 400 Hz, the measurement values recorded for the event voltage fluctua-
tion graph are maximum and minimum values of RMS voltage for each cy-
cle.