Iziguquli zamandla ombane ombane we-AC zisetyenziswa kwiiswitshi zohlobo lwebhokisi ezigqunywe ngegesi ezinesantya esilinganiselweyo se-50Hz kunye nombane olinganisiweyo we-10kV.Iyakwazi ukukhupha izibonakaliso zevoltage ezichanekileyo ezichanekileyo ezisetyenziswe ngumlinganiselo kunye nokulawula izixhobo.Le mveliso iqonda ukudibanisa okuphambili kunye nesekondari kunye nemizimba yokutshintsha kubandakanya i-ZW20 / ZW28, i-FTU kunye nezinye izixhobo, kunye neempawu zobukhulu obuncinci, ubunzima obulula, ukusebenza kakuhle, ukusebenza okuthembekileyo, ukufakwa lula njalo njalo.