OEM Signal Generator Change over Switch 1,stamford type of AC generator 2,advanced ... AVR 3,good after-sale service,safe OEM Signal Generator Change over Switch1,stamford type of AC generator2,advanced AVR3,good ... ) Rated voltage: 400V,400/230V,230V,415V,etc.3) Rated frequency: 50 / 60Hz4) Rated speed: 1,500 / 1,800rpm5) Three-phase ...