Nqe lus piav qhia:

Qib nplhaib kuj tseem siv rau cov khoom siv hluav taws xob siab.Cov rings muab qhab nia zoo ib yam li corona rings, tab sis lawv thaiv cov insulators es tsis yog conductors.Txawm hais tias lawv kuj tseem tuaj yeem pab txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau corona, lawv lub hom phiaj tseem ceeb yog txhawm rau txo qhov muaj peev xwm gradient raws li cov insulator, tiv thaiv kev tawg ntxov ntxov.

Lub peev xwm gradient (hluav taws xob teb) thoob plaws ib qho insulator tsis zoo ib yam, tab sis yog siab tshaj plaws ntawm qhov kawg ntawm lub siab hluav taws xob electrode.Yog tias muaj qhov hluav taws xob txaus txaus, lub insulator yuav tawg thiab ua cov khoom siv thaum kawg ua ntej.Thaum ib feem ntawm cov insulator kawg tau tawg thiab ua conductive, tag nrho cov voltage yog siv nyob rau hauv lub sij hawm ntxiv, yog li qhov kev puas tsuaj yuav sai sai los ntawm high voltage kawg mus rau lwm yam, thiab flashover arc yuav pib.Yog li ntawd, cov insulators tuaj yeem sawv ntsug ntau dua voltages yog tias qhov muaj peev xwm gradient ntawm qhov siab voltage kawg raug txo.

Lub nplhaib muab qhab nia nyob ib puag ncig qhov kawg ntawm lub insulator ntawm ib sab ntawm lub siab voltage conductor.Nws txo qhov gradient thaum kawg, uas ua rau muaj qhov ntau dua qhov voltage gradient raws cov insulator, tso cai rau luv luv, pheej yig dua insulator siv rau qhov muab hluav taws xob.Cov qhab nia qib kuj txo cov kev laus thiab kev puas tsuaj ntawm cov insulator uas tuaj yeem tshwm sim ntawm HV kawg vim muaj hluav taws xob siab nyob ntawd.