Engineering Tools

Phase / Voltage (V) Single-Phase 220V (Residential) Three-Phase 380V (Industrial / DC Cabinet Input) Voltage U (V) Current I (A) Power Factor cosΦ AC Charging Piles (Single / Three-Phase) Residential 7kW Three-Phase 11kW Three-Phase 22kW Three-Phase 43kW DC Charging Cabinet (Output → Input-Side Equivalent Current) 30kW (380V/49A) 60kW (380V/100A) 80kW (380V/130A) 100kW (380V/165A) 120kW (380V/200A) 160kW (380V/260A) 240kW (380V/392A) 400kW (380V/660A) 480kW (380V/784A) ✕ Clear Power Calculation Result Active Power P (kW)-- Reactive Power Q (kVar)-- Apparent Power S (kVA)-- What is the EV Charger Power Calculator? The EV Charger Power Calculator is an electrical calculation tool designed for EV charger installation engineers, electrical designers, and vehicle owners. Based on the fundamental AC circuit formulas P = √3 × U × I × cosΦ (three-phase) or P = U × I × cosΦ (single-phase), it provides real-time calculations of active power, reactive power, and apparent power for EV chargers. ...

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. ...