Lub shielding txheej ntawm hom kab no feem ntau yog ua los ntawm cov hlau hlau braided rau hauv ib lub mesh lossis hlau zaj duab xis, thiab muaj ntau txoj kev sib txawv ntawm kev thaiv ib leeg thiab ntau -shielding. Ib qho kev tiv thaiv ib leeg yog hais txog ib qho kev tiv thaiv ib qho mesh lossis cov yeeb yaj kiab tiv thaiv uas ib los yog ntau tus neeg tuaj yeem muab qhwv. Txoj kev ntau-shielding txoj kev yog tias muaj ntau yam shielding nets, thiab shielding films yog co-nyob rau hauv ib tug cable. Qee qhov yog siv los cais cov electromagnetic cuam tshuam ntawm cov xov hlau, thiab qee qhov yog ob npaug - txheej thaiv thaiv kom ntxiv dag zog tiv thaiv cov nyhuv. Lub mechanism ntawm shielding yog rau hauv pem teb lub shielding txheej kom cais cov induced cuam tshuam voltage ntawm sab nraud khub ntawm hlau.
1. Semi-kev tiv thaiv kev tiv thaiv
Lub semiconducting shielding txheej feem ntau yog muab pov tseg rau ntawm qhov chaw sab nraud ntawm cov tub ntxhais hluav taws xob conductive thiab sab nrauv ntawm cov txheej txheem insulating, uas feem ntau hu ua sab hauv semiconducting shielding txheej thiab txheej semiconducting shielding txheej. Lub semiconducting shielding txheej yog tsim los ntawm cov khoom siv semiconducting uas tsis tshua muaj zog thiab nyias tuab. Sab hauv ib nrab-cov txheej txheem tiv thaiv kab hluav taws xob yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau twisting ntawm cov hlau core. Cov txheej txheej sab nrauv-cov txheej txheem tiv thaiv yog nyob rau hauv kev sib cuag zoo nrog cov txheej txheem txheej txheej insulating, thiab muaj peev xwm sib npaug nrog cov hlau sheath kom tsis txhob muaj qhov paug tawm ntawm cov hlau sheath vim muaj qhov tsis xws luag xws li tawg ntawm qhov chaw. ntawm cov kab hluav taws xob rwb thaiv tsev.
2. Hlau thaiv
Rau nruab nrab thiab qis voltage fais fab cables uas tsis muaj hlau sheaths, ntxiv rau semi-cov ntaub thaiv npog txheej, yuav tsum tau ntxiv ib txheej hlau thaiv. Cov hlau thaiv txheej feem ntau yog ua los ntawm tooj liab daim kab xev los yog tooj liab hlau, uas feem ntau plays lub luag hauj lwm ntawm shielding hluav taws xob teb.
Vim hais tias tam sim no dhau los ntawm lub hwj chim cable yog qhov loj, ib qho chaw sib nqus yuav raug tsim nyob ib ncig ntawm qhov tam sim no. Txhawm rau kom tsis txhob cuam tshuam rau lwm cov khoom, ib txheej tiv thaiv tuaj yeem tiv thaiv qhov hluav taws xob electromagnetic hauv cable. Tsis tas li ntawd, cov txheej thaiv thaiv ntawm cable tuaj yeem ua lub luag haujlwm hauv kev tiv thaiv hauv av. Yog hais tias cov tub ntxhais hlau ntawm lub cable puas lawm, cov xau tam sim no tuaj yeem ntws raws cov txheej txheem tiv thaiv zoo li daim phiaj hauv av, uas ua lub luag haujlwm hauv kev tiv thaiv kev nyab xeeb. Nws tuaj yeem pom tau tias lub luag haujlwm ntawm cov kab thaiv kab thaiv txheej tseem loj heev.
