Thaum pib ntawm kev siv cov chiv insulators , lub tshuab hluav taws xob ua haujlwm tau ceev faj txog kev siv cov tshuab ntsuas kabmob sib txuas ntawm cov kab sib txuas nrog cov kev ntsuas ntawm 500 kV. Muaj kev tshwj xeeb ntawm kev ua haujlwm zoo, nws tau tuaj yeem ua ntau yam ntawm cov kabmob sib xyaw ntawm Insulators los ntawm Tebchaws Asmeskas, Lub Tebchaws Amelikas, thiab lwm cov tuam txhab ntawm cov khoom sib cais. Lub tuam txhab tsim tawm 500 kV ntawm insulators kuj yog txuas rau lub network. Tom qab ntau tshaj li kaum xyoo ntawm kev soj ntsuam, kev khiav hauj lwm xyaum qhia tau hais tias qhov zoo ntawm kev sib cais ntawm insulators tsis yog tsis zoo rau cov ntawm cov tuaj txawv teb chaws.