Inkcazo:

Iringi yokuhlela ikwasetyenziswa kwizixhobo zombane ophezulu.Izangqa zokulinganisa ziyafana nezangqa zecorona, kodwa zirhangqa izigqumatheli kunezikhonduki.Nangona zinokusebenza ukucinezela i-corona, eyona njongo yazo kukunciphisa i-gradient enokwenzeka ecaleni kwesigqubuthelo, ukuthintela ukophuka kombane kwangaphambi kwexesha.

I-gradient enokwenzeka (indawo yombane) kwi-insulator ayifani, kodwa iphezulu ekupheleni ecaleni kwe-electrode yombane ophezulu.Ukuba iphantsi kwamandla ombane aphezulu ngokwaneleyo, i-insulator iya kuphuka kwaye ibe yi-conductive ekuqaleni.Nje ukuba icandelo le-insulator ekugqibeleni liphulwe ngumbane kwaye liqhube, i-voltage epheleleyo isetyenziswe kulo lonke ubude obuseleyo, ngoko ke ukuphuka kuya kuqhubela phambili ngokukhawuleza ukusuka ekupheleni kombane ophezulu ukuya kwelinye, kwaye i-flashover arc iya kuqala.Ke ngoko, ii-insulators zinokuma i-voltages ephezulu kakhulu ukuba i-gradient enokwenzeka kwisiphelo sombane ophezulu iyancipha.

Umsesane wokulinganisa ujikeleze isiphelo se-insulator ecaleni kwe-conductor ephezulu yombane.Yehlisa i-gradient ekugqibeleni, ikhokelela kumthamo wombane othe kratya ecaleni kwe-insulator, ivumela isithinteli esifutshane, esingabizi kakhulu ukuba sisetyenziselwe umbane onikiweyo.Amakhonkco okulinganisa nawo anciphisa ukuguga kunye nokuwohloka kwe-insulator enokuthi yenzeke ekupheleni kwe-HV ngenxa yentsimi yombane ephezulu apho.