Hioki 3196 - Page 191

12.2 Measurement Specifications
185
Conditions of Guaranteed Accuracy
Conditions of Guaranteed
Accuracy
After 30 min warm-up, however, when measuring AC voltage; sine-wave in-
put, PF=1, synchronized PLL
Temperature and humidity
for guaranteed accuracy
Guaranteed accuracy period
23±5°C(73±9°F), 80% RH or less (applies to all specifications unless other-
wise noted)
6 months
Fundamental waveform
range for guaranteed accu-
racy
42.5 to 69 Hz (360 to 440 Hz for 400 Hz measurements, although guaran-
teed accuracy is only for separately conducted shipping tests)
Display area for guaranteed
accuracy
Effective measurement area
Indicator
Total display area
0.15 to 130% of selected range (RMS voltage value, RMS current value, ef-
fective power, apparent power, reactive power, power factor)
Display is suppressed to zero when less than 0.15%.
0.3 to 130% of selected range (DC voltage)
Display is suppressed to zero when less than 0.3%.
0 to 130% of selected range (measurement items other than the above)
Effective measurement area
1 to 110% of selected range
Miscellaneous Measurement Items
(for all calculation items, there are no gaps of measurements)
RMS Voltage
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).
Display item
RMS voltage value for each channel or AVE (average) RMS voltage value
for multiple channels
(For details, see the formula.(page 200))
Display conversion function
Three-phase 3-wire (3P3W3M):
Δ (LINE-LINE, line-to-line voltage)-Y (PHASE-N, phase-to-neutral voltage)
conversion (The central point is calculated as the center.)
Three-phase 4-wire:
Y (phase-to-neutral voltage)-
Δ(line-to-line voltage)conversion
Measurement range
CH1 to 3: 150.00/300.00/600.00 V rms
CH4: 60.000/150.00/300.00/600.00 V rms
CH4 (for DC measurement): ±60.000/600.00 V pk
Range selection
Manual range (Same operation switches the range for CH1 to 3.)
DC measurement
MEAN calculation
Measurement accuracy
AC: ±0.2% rdg. ±0.1% f.s. (50/60 Hz), ±0.2% rdg. ±0.6% f.s. (400 Hz)
DC: ±0.3% rdg. ±0.4% f.s.
Crest factor
Less than 3 (for full-scale input)