MATSUTA STABILIZER : 1 KVA - 200 KVA; INPUT VOLTAGE SINGLE PHASE : 50 V-140 V/ 160 V-250 V; OUTPUT SINGLE PHASE 110 V + - 2 % / 220 V + - 1 % . INPUT VOLTAGE 3 PHASE 4 WIRE : 120V-240 V/ 310 V - 430 V; OUTPUT VOLTAGE 3 PHASE 190 V + - 2% / 380 V + - 1 % . Frequency 50/ 60 Hz. Efficiency Better than 95% ( Input Voltage 180 V, Output Voltage 220 V and at rated load)