Umqondo wemibhoshongo yokudlulisela, abaqhubi bokudlulisa basekelwa izingxenye zemibhoshongo yokudlulisela. Izintambo zikagesi eziphakeme zisebenzisa “imibhoshongo yensimbi,” kuyilapho izintambo zikagesi eziphansi, njengalezo ezibonwa ezindaweni zokuhlala, zisebenzisa “izigxobo zokhuni” noma “izigxobo zikakhonkolo.” Ngokuhlangene, zibizwa ngokuthi “imibhoshongo.” Imigqa kagesi ephezulu idinga ibanga elikhudlwana lokuphepha, ngakho-ke idinga ukumiswa endaweni ephakeme kakhulu. Imibhoshongo yensimbi kuphela enamandla okusekela amashumi amathani emigqa. Isigxobo esisodwa asikwazi ukusekela ubude noma isisindo esinjalo, ngakho izigxobo ngokuvamile zisetshenziselwa amazinga aphansi kagesi.

Ngokuvamile kunezindlela ezimbili zokunquma izinga le-voltage:

1.Indlela yokuqaphela inombolo yesigxobo

Emibhoshongweni yemigqa yamandla kagesi aphezulu, kuvame ukufakwa amapuleti ezinombolo zezigxobo, akhombisa ngokusobala amazinga kagesi ahlukene afana no-10kV, 20kV, 35kV, 110kV, 220kV, kanye no-500kV. Kodwa-ke, ngenxa yokuchayeka isikhathi eside emoyeni naselanga noma ezicini zendawo ezungezile, amapuleti ezinombolo angase angacaci noma kube nzima ukuwathola, okudinga ukubhekisiswa kahle ukuze awafunde ngokucacile.

2.Indlela yokuqaphela iyunithi ye-insulator

Ngokubheka inani lezintambo ze-insulator, izinga le-voltage linganqunywa cishe.

(1) imigqa engu-10kV kanye no-20kV ivamise ukusebenzisa izintambo eziyisivikelo ezi-2-3.

(2) Imigqa engu-35kV isebenzisa izintambo eziyisivikelo ezi-3-4.

(3) Kolayini be-110kV, kusetshenziswa izintambo ezingu-7-8 zesivikelo.

(4) Kolayini abangu-220kV, isibalo sezintambo zokuvimba sikhuphuka sibe ngu-13-14.

(5) Ezingeni eliphakeme kakhulu lika-voltage elingu-500kV, inani lezintambo ze-insulator liphezulu njenge-28-29.