... SVC Single-phase high accuracy full automatic AC voltage stabilizersSVC Single-phase high accuracy full automatic AC voltage stabilizers is made of regulator,servo motor,automatic ... small volume,light weigh,undistorted waveform,high efficiency,reliabli performance,and time-delay,over-voltage,etc, ... over voltage245±5VDelayShort Deley3-7 sec long Delay 3-7min Ambient temperature -5+40Temperature rise <60 ...