Thaum lub sij hawm ua hauj lwm ntawm high-voltage hluav taws xob cov cuab yeej xws li transformers, roj Circuit Court breakers, roj puv cables, lub hwj chim capacitors thiab roj bushings, cov kev ua tau zoo ntawm insulating roj yuav maj deteriorate vim cov teebmeem ntawm oxygen, kub, high humidity thiab tshav ntuj. Muaj zog hluav taws xob teb thiab impurities. Cov roj insulating yuav tsum tau kuaj tsis tu ncua los txiav txim seb nws qhov kev ua tau zoo puas tau ua tsis zoo. Qhov zoo ntawm cov roj insulating yog ze ze rau qhov tawg voltage.
Lub zog tawg yog qhov ntsuas ntawm lub peev xwm ntawm qhov nruab nrab kom tiv taus qhov hluav taws xob yam tsis muaj kev puas tsuaj. Nws yog ib qho ntawm cov cim tseem ceeb rau kev ntsuas kev ua haujlwm ntawm cov roj transformer. Cov roj qhuav thiab huv si muaj qhov ntsuas hluav taws xob siab heev. Lub ntsiab yam tseem ceeb cuam tshuam rau qhov tawg voltage ntawm transformer roj yog dej, impurities, kub, thiab lwm yam. Cov kev sib raug zoo ntawm kub thiab tawg voltage yog complex. Rau cov roj qhuav thiab impurity dawb, lub zog tawg yog tswj los ntawm qhov tsis sib xws ntawm cov khoom nruab nrab ntawm cov roj.
Txawm li cas los xij, thaum cov roj muaj cov dej dawb, dej yaj lossis cov khoom muaj kuab paug, cov impurities no muaj cov khoom siv hluav taws xob ntau dua thiab dielectric tas li tshaj li cov roj nws tus kheej, lawv yuav tsim ib tus choj txuas hluav taws xob hauv qab cov hluav taws xob hluav taws xob kom txo tau qhov tawg ntawm cov roj. Lub dielectric zog tester ntawm cov roj insulating tuaj yeem txiav txim seb puas muaj dej, impurities thiab cov khoom siv hluav taws xob hauv cov roj, tab sis nws tsis tuaj yeem txiav txim seb puas muaj cov kua qaub lossis cov sludge hauv cov roj.
Feem ntau, qhov tawg ntawm cov roj transformer tuaj yeem ncav cuag 70kV, thiab tom qab ntawd nws ntxiv rau lub tshuab nqus tsev tom qab nqus pom thiab degassing. Insulating roj yog ib qho tseem ceeb dielectric khoom nyob rau hauv hluav taws xob thiab industrial ntau lawm. Nws yog dav siv los ua kom txias thiab rwb thaiv tsev ntawm cov khoom siv hluav taws xob thiab hluav taws xob xws li transformers.