Tsanangudzo:

Mhete yegiredhi inoshandiswawo pane yakakwira voltage michina.Mhete dzemagiredhi dzakafanana nemhete dzekorona, asi dzinotenderedza ma insulators kwete maconductor.Kunyangwe ivo vanogona zvakare kushandira kudzvanyirira corona, chinangwa chavo chikuru ndechekudzikisa inogona kuitika padivi peisulator, kudzivirira kuparara kwemagetsi nguva isati yakwana.

Iyo inogoneka gradient (yemagetsi munda) pane insulator haisi yunifomu, asi yakakwirira kumagumo padivi peyakakwira voltage electrode.Kana ikaiswa kune yakakwira yakaringana voltage, iyo insulator inoputsika uye inove conductive pamagumo ekutanga.Pane imwe nguva chikamu che insulator kumagumo chave chaputsika nemagetsi uye chave conductive, iyo yakazara voltage inoshandiswa pahurefu hwasara, saka kuparara kuchakurumidza kufambira mberi kubva kumagumo emagetsi kusvika kune imwe, uye flashover arc inotanga.Naizvozvo, ma insulators anogona kumira zvakanyanya kukwira voltages kana iyo inogona gradient payakakwira voltage kupera yakaderedzwa.

Mhete yegiredhi inotenderedza kupera kweiyo insulator padivi peyakakwira voltage conductor.Iyo inoderedza gradient kumagumo, zvichiita kuti iwedzere kunyange voltage gradient padivi pe insulator, ichibvumira ipfupi, yakachipa insulator kuti ishandiswe kune yakapihwa voltage.Giredhi mhete zvakare inoderedza kuchembera uye kuparara kweiyo insulator inogona kuitika paHV kupera nekuda kwenzvimbo yepamusoro yemagetsi ipapo.