TDGC2, TSGC2 series voltage regulator is a kind of auto transformer which the ratio of primary coil and second coil is adjustable linearly. TDGC2 is single phase voltage regulator, and TSGC2 is combined of 3 sets of TDGC2 single phase regulator and connected as star-type. This series product is high dfficiency, energy saving, non waveform distortion, and suit to scient test, household appliance, and industry set for adjusting voltage, power, temperature, etc. Capacity:0.2kVA,0.5kVA,1kVA,2kVA,3kVA5kVA,10kVA,30kVA