Calcolatrice Potenza Trifase Gratuita

Calcola la potenza trifase in kW, kVA e kVAR.

V
A

Real Power (P)

29.44 kW

Apparent Power (S)34.64 kVA
Reactive Power (Q)18.25 kVAR

Real Power (P) vs Line-to-Line Voltage (V_LL)

Vedi formula →

Formula

## Three-Phase Power Calculations Three-phase systems are the standard for industrial power distribution. ### Formulas **P = sqrt(3) x V_LL x I x cos(phi)** (real power in watts) **S = sqrt(3) x V_LL x I** (apparent power in VA) **Q = sqrt(3) x V_LL x I x sin(phi)** (reactive power in VAR) where V_LL is the line-to-line voltage, I is the line current, and cos(phi) is the power factor. These apply to balanced loads.

Esempio Risolto

A 400 V three-phase supply with 50 A line current at 0.85 power factor.

  1. 01S = sqrt(3) x 400 x 50 = 34,641 VA = 34.64 kVA
  2. 02P = 34,641 x 0.85 = 29,445 W = 29.44 kW
  3. 03Q = 34,641 x sin(acos(0.85)) = 34,641 x 0.5268 = 18.25 kVAR