Iyo AC electronic voltage transformers inoiswa kune ring main unit (RMU) ine rated frequency ye50-60Hz uye yakayerwa voltage ye13.8kV.Inogona kuburitsa yakakwirira-chaiyo voltage masaini anoshandiswa nekuyera uye kutonga zvishandiso.Ichi chigadzirwa chinoona kubatanidzwa kwekutanga uye kwechipiri nekuchinja miviri inosanganisira RMU, DTU pamwe nemimwe michina, uye ine zvimiro zvehukuru diki, huremu, kuita kwakanakisa, kushanda kwakavimbika, kuisirwa nyore uye zvichingodaro.