... .2/3 Pitch 3) Brushless, Synchronous ac gener single Phase ac permanent synchronous generator 6.8KWwith Lomg experience in ... models, with 50Hz or 60Hz frequency, Single bearing or Double bearing, brushless, Self-excited. Abounds with almost every ... And Voltage50Hz or 60Hz as per customer’s request. Voltage from 380 ~ 690V, 190V~345V, 220~400V ... , etc.WindingAll generator stators are wound to 2/3 pitch.