Li-transformer tsa motlakase tsa AC li sebelisoa ho li-switches tsa mofuta oa mabokose a kentsoeng ka khase a nang le maqhubu a lekantsoeng a 50Hz le matla a lekantsoeng a 10kV.E ka fana ka tekanyo e phahameng ea boemo bo phahameng ba motlakase le matšoao a ho lekanya motlakase oa zero a sebelisoang ke lisebelisoa tsa ho lekanya le ho laola.Sehlahisoa sena se hlokomela kopanyo ea mantlha le ea bobeli le 'mele oa switjha o kenyelletsang ring main unit(RMU) le ZW20, le lisebelisoa tse ling tse kang FTU hammoho le DTU, tse nang le likarolo tsa boholo bo nyane, boima bo bobebe, ts'ebetso e ntle haholo, ts'ebetso e tšepahalang, ho kenya habonolo joalo-joalo. ho.