Giridhi itiweki inobatanidza zvidyarwa zvemagetsi ekugadzira magetsi kune mitsetse yakakwira magetsi inotakura magetsi pane imwe chinhambwe kuenda kune zviteshi - "kutapurirana".Kana kwasvikwa, zviteshi zvinodzikisira voltage ye "kugovera" kusvika kumitsara yepakati nepakati uyezve kuenda kune yakaderera voltage mitsetse.Pakupedzisira, transformer padanda renhare inoideredza kusvika kumagetsi epamba e120 volts.Ona mufananidzo uri pazasi.

Giridhi yose inogona kufungidzirwa seyakaumbwa nezvikamu zvitatu zvikuru: chizvarwa (maplants uye step up transformers), kutapurirana (mitsara uye matransformer anoshanda pamusoro pe100,000 volts - 100kv) uye kugovera (mitsetse uye ma transformer ari pasi pe100kv).Mitsetse yekufambisa inoshanda pamagetsi akanyanya kukwirira 138,000 volts (138kv) kusvika 765,000 volts (765kv).Matanho ekutakurisa anogona kureba kwazvo - mumitsetse yenyika uye kunyangwe mitsetse yenyika.

Kune iyo mitsetse yakareba, zvakanyanya kushanda zvakanyanya ma voltages anoshandiswa.Semuenzaniso, kana voltage yakapetwa kaviri, ikozvino inochekwa nepakati nokuda kwehuwandu hwesimba huri kuendeswa.Kurasikirwa kwekutapurirana kwemutsara kwakaenzana neskweya yezvino, saka mutsara wakareba "kurasikirwa" kunotemwa nechikamu chechina kana voltage yakapetwa kaviri.Mitsetse ye "kugovera" inowanikwa mumaguta nenzvimbo dzakatenderedza uye inofefetedza kunze kwemuti wakafanana nefashoni.Ichi chimiro-chakafanana nemuti chinokura kunze kubva kune chiteshi, asi nezvinangwa zvekuvimbika, chinowanzo ine kanenge kamwe kasina kushandiswa backup yekubatanidza kune substation iri pedyo.Kubatana uku kunogona kugoneswa nekukurumidza kana paita emergency kuitira kuti nharaunda yechiteshi igone kupihwa chikafu neimwe chiteshi.