The SBW and DBW series single and three-phase fully automatic compensated power regulators are designed and manufacturedusing internationally advanced compensation technology. When the voltage of the power grid fuctuates or the load currentchanges, it can automatically maintain stable output voltage to ensure the normal operation of electrical equipment. Compared withother types of voltage regulators, it has large capacity, high eficiency, no waveform distortion, easy maintenance, reliableoperation, and can stiloutput full capacity even at the low end of the input voltage range. t has protection against overvotage.overcurrent,and startup phase sequence.