... AC generator. 2,Certificate of ISO9001:2008. Automatic voltage regulator SY-AVR-2058 1,Introduction:Model: 2058 series ... Introduction: SY-AVR-2058 generator automatic voltage regulators (AVR) are specifically designed to fit ... engine controller, water preheater, automatic voltage regulator, generator synchronizer, genset controller, power factor regulator, fuel solenoid, charger for engine ...