Kev ua tiav cov npe ntawm cov cables feem ntau yog qhov nyuaj, yog li tib neeg qee zaum siv lub npe yooj yim (feem ntau yog lub npe qeb) ua ke nrog cov qauv tshwj xeeb los hloov lub npe tag. Piv txwv li," low voltage cable" sawv cev rau tag nrho cov yas insulated fais fab cables ntawm 0.6 / 1kV chav kawm.
Hom spectrum ntawm cov hlau thiab cable yog qhov ua tiav. Nws tuaj yeem hais tias ntev npaum li tus qauv thiab cov lus qhia tshwj xeeb ntawm cov xaim thiab cable tau sau, cov khoom tshwj xeeb tuaj yeem qhia meej, tab sis nws lub npe tiav yog dab tsi?
