... 2.1 Year Warranty 3.Best Price 4.Timely Shipping A.C. Synchronous Generator 1. CE,CCC Approbate 2. Rated ... meet the needs of different voltage requirements·H-class insulation standards for grading·Diode-side spin round and coupling ... AVR automatic voltage regulator, insulation, such as H-class, steel chassis stable performance, reliable quality. Optional color alternator. A.C. Synchronous Generator