SVC(TNS)系列三相高精度全自動交流穩壓器是SVC系列單相產品性能的組合，輸入相制 為三相四線制，在額定電容量范圍內，可同時供電源電壓為單相220V或三相380V用電設備 使用，并設有過壓保護。 SVC(TNS) serise three-phase high accuracy full automatic AC voltage stabiliaers.It is comb- ined the performance of the Series SVC single-phase products,the input phase system is three- phase and fourwire system, the output voltage is 220V of phase and 380V of line voltage, Within the roted capacity range, they also can be used for the equipment of which the souce voltage is single-phase 220V or three-phase 380V.