Balanced three-phase power
Using line-to-line voltage, P = √3 × V_LL × I × PF.
The √3 factor comes from the relationship between phase and line quantities in a balanced system.
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Three-Phase Power Calculator
Real, reactive and apparent power for a balanced three-phase load.
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P = √3 × V_LL × I × cos φ for a balanced load.
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Assumptions and limits.
- Balanced three-phase sinusoidal load.
Frequently asked questions
What if the load is unbalanced?
This formula does not apply. Analyse each phase separately or use a proper unbalanced-load method.