1.Input voltage:280V~430V 2.Output voltage:380V+/-3% 3.Frequency:50H/60Hz 4.Phase:3 5.Efficiency:Better than 90% TNS automatic regulator voltage consists of contact voltage regulator,sampling controlcircuit and servomotor as well.It has excellent features,such as small waveform distortion,high efficiency,high power factor,free from the effect or frequency variation of supply.It canbe widely used ...