Standards: Generator sets meet GB/T2820 General Technical Specifications for Diesel Generating SetsElectric performance for generating setsRated Voltage: 400/230V Transient voltage regulation: +20%, ≤-15% Connection method: 3 phrase, 4 wires Steady state voltage regulation: Rated frequency: 50Hz (option: 60HZ) Power factor 0.8 lagging Rated speed: 1500RPM (option: 1800RPM) Line voltage wave form distortion: ≤5% Frequency regulation: steady state: ≤0-5% Transient state: ≤?0% Prime power: 20-150kw producing area:China