... ,ISO9000 Three phase ac voltage regulator 50KW, 380V 3PH voltage stabilizerCE, SGS, ISO9001, CCCleading manufacturerSWB, DBW Series of high Power Regulator includes three-phase and single phase ... , capacitive, inductive) Regulators accuracy 1-5% Adjustable No overvoltage, undervoltage, phase sequence, with multiple protections.. SBW DBW 50KW three phase ac voltage regulator