... ,safe,environment-friendly 2,brushless stamford alternator 3,competitive price ST Series Single-phase synchronous alternator 1,safe,environment-friendly ... 2,brushless stamford alternator 3,competitive price SZN-184 Series Brushless ... ) 2) Rated voltage: 400V,400/230V,230V,415V,etc. 3) Rated frequency: 50 / 60Hz 4) Rated speed: 1, ...