Industrial power calculations
Active Power
P = √3 × Vₗ × Iₗ × cosθ
Real power consumed in a balanced three-phase AC system.
Apparent Power
S = √3 × Vₗ × Iₗ
Total volt-amperes supplied to a three-phase load.
Reactive Power
Q = √3 × Vₗ × Iₗ × sinθ
Non-working power stored and released by inductors/capacitors.