APPENDIX 24
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Appendix 3 Active Power Consumption/Regeneration, and Reactive Power and Power Factor Lead and Lag
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Appendix 3.3 Power Factor
90゜
0゜
180゜
90゜
LAG（Lag）LEAD（Lead）
Active power
［＋P］［＋WP］
Reactive
power
［Q ー］
［ー WQ］
Power
factor
［ー］
Active power
［ー P］［ー WP］
Reactive
power
［Q＋］
［＋WQ］
Power
factor
［＋］
Consumptio
Regeneratio
Phase Relationship between Voltage and Current
Regardless of whether the reactive power meter method is used or not, the
power factor is derived from calculations based on direct measurements of
active power and apparent power. The polarity for lagging phases is unsigned;
for leading phases, "-" is added.
Note that this polarity is determined by the reactive power polarity are
derived through the reactive power meter method.
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