... generator. 2,Certificate of ISO9001:2008. Automatic voltage regulator SY-AVR-2058 1,Introduction:Model: 2058 series ... engine and genset control system, e.g. engine controller, water preheater, generator synchronizer, genset controller, power factor regulator, ... fuel solenoid, charger for engine start battery, actuator, speed controller, load sharing panel and so on. 3, ...