Nguva Relay Uye Phase DziviriroInoshandisa macircuit makuru akabatanidzwa epamusoro. Chimiro chayo uye mashandiro ayo zvinogona kuenzaniswa neaya akafanana muEurope. Kune zvakawanda zvakanakira, zvakaita sechimiro chayo chakanaka, nguva yakareba, kunyatsorongeka kwayo uye kuvimbika kwayo, simba rayo shoma rinoshandiswa, hupenyu hurefu, kugona kwayo kukuru uye nyore kuisa. Inogona kushandiswa mumhando dzese dze automatic control system.