Hioki PQ3198 - Page 210

13.2 Input Specifications/Output Specifications/Measurement Specifications
204
(19) Active energy and reactive energy (WP+, WP-/WQLAG, WQLEAD)
Measurement method Measured every 10 cycles (50 Hz) or 12 cycles (60 Hz) (approx. 200 ms).
During 400 Hz measurement, measured every 80 cycles
using the 8-cycle waveform (approx. 200 ms).
Integrated separately by consumption and regeneration from active power.
Integrated separately by lag and lead from reactive power.
Recorded at the specified TIME PLOT interval.
Data is updated every 10 cycles (50 Hz), 12 cycles (60 Hz), or
80 cycles (400 Hz) (approx. 200 ms).
Integration starts at the same time as recording and continues to previous TIME PLOT update at
termination of recording.
Displayed item Active energy: WP+ (consumption), WP- (regeneration)
Sum of multiple channels (for more information, see "13.8 Calculation Formula" (p.231))
Reactive energy: WQLAG (lag), WQLEAD (lead)
Sum of multiple channels (for more information, see "13.8 Calculation Formula" (p.231))
Elapsed time
Measurement range Combination of voltage × current range (See "13.9 Range Breakdown and Combination Accuracy"
(p.244))
Value display: 6 digits
Measurement accuracy Active energy : Active power measurement accuracy ±10 dgt.
Reactive energy : Reactive power measurement accuracy ±10 dgt.
Cumulative time accuracy : ±10 ppm ±1 s (23°C [73°F])
Event threshold N/A
(20) Apparent power (S)
Measurement method Calculated from RMS voltage U and RMS current I.
No polarity
Displayed item Apparent power of each channel and its sum for multiple channels
(For details, see "13.8 Calculation Formula" (p.231)
)
Measurement range Depends on the voltage × current range combination
(See "13.9 Range Breakdown and Combination Accuracy" (p.244)
)
Measurement accuracy ±1 dgt. for calculations derived from the various measurement values (sum is ±3 dgt.)
Event threshold Power range
Event IN Start of approx. 200 ms aggregation in which the absolute value was greater than the threshold
Event OUT Start of approx. 200 ms aggregation in which the reading was less than (threshold - hysteresis)
following the EVENT IN state
Multiple-phase system treatment Separate by channel
Saved waveforms Event waveforms
HIOKI PQ3198A961-02