... Automatic voltage regulator SY-AVR-2058 1,Introduction:Model: 2058 series Introduction: SY-AVR-2058 generator automatic voltage regulators (AVR) are ... generator. The system automatically adjusts the output voltage of generator by controlling the excitation current ... preheater, generator synchronizer, genset controller, power factor regulator, fuel solenoid, charger for engine start battery, actuator ...