... Double bearing, brushless, Self-excited. Abounds with almost every model in stock. Frequency And Voltage50Hz or 60Hz as per customer ... , serial star, parralle star and serial delta connection are available, All three-phase generators are 12-lead reconnectable, providing ... optional but the rated power will decrease 5%. Voltage RegulatorsThe model we use including: MX321, MX341, AS440, SX440, SX460, ...