... ) Brushless, Synchronous ac generator. 4) S WERNA Single Phase diesel generator alternators with Lomg experience in manufacturing alternator ... 50 different models, with 50Hz or 60Hz frequency, Single bearing or Double bearing, brushless, Self-excited. Abounds ... are available, All three-phase generators are 12-lead reconnectable, providing voltage and phase flexibility.Insulation and ProtectionInsulation ...