Mikro DPM680, Инструкция по эксплуатации

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b.4 PoWer factor calculation
The total power factor is a measure of effectiveness of actual power transfer and it is calculated by the
following equation:
Total power factor = Active power / {RMS voltage x RMS current}
= Active power / Apparent power
The overall total power factor is calculated based on arithmetic apparent power and total active power.
On the other hand, the displacement power factor is calculated using only the fundamental
components of the voltage, current and active power, i.e.
Displacement power factor = Fundamental active power /
{Fundamental RMS voltage
x Fundamental RMS current}
b.5 aPParent PoWer calculation
For individual phases, the true apparent power is calculated from the rms voltage and current by the
following equation:
True apparent power = true rms voltage x true rms current
To obtain the overall true apparent power, the true apparent power of individual phases are
summed arithmetically by the following equation:
Overall true apparent power = Phase L1 true apparent power +
Phase L2 true apparent power +
Phase L3 true apparent power
Appendix
B.
4
B.5