Hluav taws xob substation, tseem hu ua lub thawv-hom substation, feem ntau yog txias los ntawm huab cua ncig. Yog li ntawd, yuav tsum tsis txhob muaj qhov txhaum cai nyob ib puag ncig nws, tshwj xeeb tshaj yog lub qhov rooj ntawm chav tsev transformer yuav tsum tsis txhob raug thaiv, tab sis kuj yuav tsum feem ntau tshem tawm qhov txuas ntawm lub qhov rooj kaw, kom ntseeg tau tias txhua yam khoom siv hluav taws xob tsis pub tshaj qhov ntsuas kub.

Hauv pem teb ntawm lub thawv substation yuav tsum tau muab tso rau hauv qhov chaw siab dua, tsis yog nyob rau hauv qhov chaw qis, thiaj li tsis cuam tshuam rau kev ua haujlwm ntawm cov khoom siv los ntawm cov nag los rau hauv lub thawv.