Ma transfoma amagetsi a AC amagwiritsidwa ntchito pa masiwichi amtundu wa bokosi lopangidwa ndi gasi okhala ndi ma frequency a 50Hz ndi voteji ya 10kV.Itha kutulutsa ma siginecha olondola kwambiri a zero omwe amagwiritsidwa ntchito poyezera ndi zida zowongolera.Izi zimazindikira kuphatikizika koyambirira ndi kwachiwiri ndi ma switch switch kuphatikiza ZW20/ZW28, FTU komanso zida zina, komanso ndi mawonekedwe ang'onoang'ono, kulemera kopepuka, magwiridwe antchito abwino, odalirika, kukhazikitsa kosavuta ndi zina zotero.