DBW  series single - phase full - automatic compensated voltage stabilizer (hereinafter referred to as voltage stabilizer) is designed for stabilizing AC voltage and made with Western Europe advanced technology and on the basis of our country national conditions. It can keep output voltage in steady state automatically when the power network voltage fluctuates or the load current varies. Compared with other voltage stabilizers, it has the advantage of large capacity, high efficiency, no wave distortionf stable voltage adjustment, suitability for kinds of loads, bearing instantaneous overload, working continually for long timeᵢ as well as free transferring between manual control and automatic control, etc, besides, it is provided with protection against over-voltage, over current, phase failure and protection for phase sequence and has following merits: small volume, light weight, convenient installation and reliable running and so on.