SBW three phases AC voltage stabilizer is a contact adjustable automatic voltage compensation high power regulating power deviceWhen voltage from support network is varied due to loading current effected ,it automatically regulates the output voltage to ensurethe normal function of the varied of electric equipments. This series product compared with other types of voltage regulator, it haslarge capacily, high efficiency ,no waveform distortion , stable voltage regulation and other advantages , it supports widely loadapplied , stand by the instantaneous overload and continuous long work, manualauto switch, can provide over voltage, lack phasephase order and machine faulty automatically protect.Conveniently assemble and reliably operating(can be made digital display/analog display)