... , good quality TDGC2,TSGC2 series voltage regulator with a beautiful shape. do not wave distortion, small size, light weight, high efficiency ... ;Where: P-rated voltage regulator(output)capacity(KVA) m-phase, single-phase m=1 three-phase m=3 12-rated output ... ,TDGC2J-9912TSGC2,TDGC2J-151520TSGC2,TDGC2J-202027TSGC2,TDGC2J-303040 TDGC2-30KVA single phase voltage regulator