// multi-utility computation suite · offline · instant · precise
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eng.three-phase-power Calculator
Calculates three-phase power, current, and power factor from line voltage, line current, and phase angle. For balanced three-phase systems, total power P = √3 × VL × IL × cos(φ) — 73% more power than a single-phase circuit with the same voltage and current.
Inputs
Voltage Line V
Electric potential difference (V). Drives current through a circuit. Household: 120 V (US) or 230 V (EU/UK).
Current A
Rate of charge flow (A). I = V/R. Above ~100 mA through the body can be lethal. Fuses protect against overcurrent.
Power Factor
A multiplier applied in the calculation.
Delta Or Wye
Reference formula or conversion factor shown for context.
Results
real power P (kW)
Reference formula or conversion factor shown for context.
reactive power Q (kVAR)
Voltage in kilovolts (kV). 1 kV = 1,000 V. Used for high-voltage transmission lines and industrial equipment.
apparent power S (kVA)
Voltage in kilovolts (kV). 1 kV = 1,000 V. Used for high-voltage transmission lines and industrial equipment.
phase voltage
Electric potential difference between the two terminals (V). In AC systems, quoted as RMS — 230 V mains has a peak of ~325 V.
P = √3 × VL × IL × PF
Reference formula or conversion factor shown for context.