Three-Phase Power Calculator — Active / Apparent / Reactive Power & Power Factor
① Three-Phase Active Power ② Apparent / Reactive Conversion ③ Power Factor Compensation Line Voltage U(V) Line Current I(A) Power Factor cosφ 典型工业 380V/50A 中压电机 380V/100A 大功率负载 380V/200A 高压 6.6kV/50A Active Power P(kW) Power Factor cosφ 典型负载 50kW 电机组 200kW 感性负载 15kW 补偿后 500kW Active Power P(kW) Before Compensation cosφ₁ After Compensation cosφ₂ 从 0.7 提到 0.95 从 0.6 提到 0.9 从 0.8 提到 0.98 大功率 500kW Calculation Result What is the Three-Phase Power / Power Factor Calculator? The Three-Phase Power / Power Factor Calculator is an online quick-calculation tool for factory electrical maintenance engineers, electrical designers, electromechanical students, and workshop electricians. Based on the fundamental AC three-phase formula P = √3 · U · I · cosφ, it takes line voltage U (V), line current I (A), and power factor cosφ as inputs to instantly compute active power P (kW), apparent power S (kVA), and reactive power Q (kvar), while automatically providing the reactive power compensation capacitor capacity (kVAr) needed to correct to cosφ = 0.95. ...