Urusobe rw'amashanyarazi ni umuyoboro uhuza inganda zikora amashanyarazi n'imiyoboro y'amashanyarazi ifite ingufu nyinshi itwara amashanyarazi intera runaka igana ku miyoboro y'amashanyarazi - "ihererekanya ry'amashanyarazi". Iyo aho ugeze, imiyoboro y'amashanyarazi igabanya ingufu z'amashanyarazi zo "gukwirakwiza" imiyoboro y'amashanyarazi aciriritse hanyuma ikarushaho kugabanya ingufu z'amashanyarazi aciriritse. Amaherezo, transformateur iri ku giti cya telefoni iyigabanya kugeza ku muyoboro w'amashanyarazi wa volts 120 mu rugo. Reba igishushanyo mbonera kiri hepfo.

Urusobe rw'amashanyarazi muri rusange rushobora gufatwa nk'urugizwe n'ibice bitatu by'ingenzi: gukora (inganda n'imashini zihindura ingufu), kohereza (imirongo n'imashini zihindura ingufu zikora hejuru ya volts 100.000 - 100kv) n'uburyo zikwirakwizwa (imirongo n'imashini zihindura ingufu ziri munsi ya 100kv). Imirongo ihindura ingufu ikora ku muvuduko mwinshi cyane wa volts 138.000 (138kv) kugeza kuri volts 765.000 (765kv). Imirongo ihindura ingufu ishobora kuba miremire cyane - mu mirongo ya leta ndetse no mu turere tw'igihugu.

Ku mirongo miremire, hakoreshwa voltage nyinshi kandi ikora neza. Urugero, iyo voltage yikubye kabiri, voltage icibwamo kabiri kugira ngo ingufu zingana ziyohererezwe. Ibihombo byo kohereza umurongo bingana na kare y'amashanyarazi, bityo "ibihombo" bigabanukaho inshuro enye iyo voltage yikubye kabiri. Imirongo "ikwirakwizwa" iherereye mu mijyi n'uturere tuyikikije kandi ikwirakwira mu buryo bumeze nk'igiti cya radial. Iyi nyubako imeze nk'igiti ikura ivuye kuri substation, ariko kugira ngo ibe yizewe, akenshi iba ifite nibura umurongo umwe udakoreshwa wo guhuza substation iri hafi aho. Iyi connection ishobora gukoreshwa vuba mu gihe cy'impanuka kugira ngo agace k'substation gashobore gutungwa n'indi substation.