Lub laj kab hluav taws xob tom qab insulator yog ib hom steel insulator muaj ib los yog ntau qhov chaw insulating tas mus li ntawm cov hlau puag, thiab qee zaum muab lub hau, thiab tuaj yeem siv rau ntawm cov hlau puag stud bolt lossis ib lossis ob peb bolts nruj me ntsis ntawm cov qauv qauv txhawb nqa. Rau nominal voltage siab dua 1000V, zaus tsis siab tshaj 100Hz, qhov siab tsis siab dua 1000m, siv rau kev rwb thaiv tsev thiab txhawb cov xaim hluav taws xob hauv AC fais fab kab hauv thaj chaw zoo tib yam thiab thaj chaw nruab nrab thiab qhov chaw muaj kuab paug hnyav, qhov kub thiab txias ntawm thaj chaw teeb tsa yog -40 ℃ ~ {+ Nruab nrab ntawm 40 ℃.
High-voltage kab (khoom) kem insulators tuaj yeem hloov pin insulators. Tus pin insulators yog hom insulators hom B, uas muaj kev cuam tshuam thiab puas thaum lub sijhawm ua haujlwm. Lub khob iav insulators yuav ua rau tus kheej rhuav tshem lub sijhawm no, thaum hluavtaws iav tsis ua haujlwm. Yog li, chav tuam txhab hluav taws xob yuav tsum tau siv nyiaj ntau thiab cov khoom siv los ua kev tshuaj xyuas hluav taws xob thiab tiv thaiv kev tshuaj ntsuam ntawm cov kab hluav taws xob, uas muaj qee yam tsis txaus ntawm kev lag luam thiab kev nyab xeeb fais fab mov. Yog li ntawd, nrog kev txhim kho kev tsim khoom thev naus laus zis, kev rov tshwm sim ntawm kab (khoom) tom qab cov kab ua haujlwm. Cov kab hluav taws xob no txhua tus muaj cov kab hluav taws xob thiab yog hom A cov kab hluav taws xob, yog li tsis tas yuav txhawj xeeb txog kev tawg ntawm sab hauv ntawm cov kab hluav taws xob thaum ua haujlwm, uas yog qhov muaj txiaj ntsig zoo.
High-voltage kab kem-hom plooj hlau insulators tau muab faib ua yim qib ntawm 95, 105, 125, 150, 170, 200, 250 thiab 325kV raws li cov ntsuas hluav taws xob ua kom lub zog tiv taus tus nqi voltage; lawv tau muab faib ua 3, 5, 8 thiab 12.5 raws li cov qhab nia tsis ua hauj lwm qhov hnyav tsis ua hauj lwm tus nqi kN plaub qib; raws li nws txoj kev teeb tsa, nws muab faib ua ob hom: kev teeb tsa ntsug thiab kab rov tav; raws li nws cov kev sib txuas nrog cov hluav taws xob loj hluav taws xob, nws muab faib ua ob hom: cov hlua khi sab saum toj thiab hom xaim sab saum toj clamp hom; raws li cov qauv sib txuas ntawm cov hlau ko taw thiab lub hauv paus Cais cov hom (xov txuas) thiab tsis sib cais hom.