Specifications: Engine: Famous Cummins, Perkins, Deutz, Isuzu and Chinese reliable Weichai, Shangchai, Yangdong,Yuchai brands etc. Alternator: Stamford, Leroy Somer, Marathon, and our Yihua brand brushless alternators TFW2 and YHG series.1) Insulation class: Class H2) Voltage: 400V / 230V, 380V / 220V, 110V / 220V3) Frequency: 50Hz, 60Hz4)..