Jiapu cable qhia koj txog cov laj thawj tseem ceeb ntawm cov teeb meem cable fais fab. Cov hom teeb meem cable muaj peb pawg loj ntawm cov teeb meem raws li nram no: grounding, short circuit, thiab disconnection.
Ib theem ntawm cov hlau tseem ceeb tawg lossis ntau theem tawg hlau
Hauv kev sim txuas cable conductor, qhov rwb thaiv tsev ntawm cable conductor thiab cov kev cai tseem ceeb ntawm kab, tab sis nyob rau hauv qhov pom ntawm ib theem lossis ntau theem tsis tuaj yeem txuas nrog, ces ib theem ntawm cov tub ntxhais hlau tawg lossis ntau theem tawg.
Peb-core cable ib lossis ob lub core grounding
Peb-core cable core lossis ob lub core conductors nrog lub rooj co rwb thaiv tsev sim tawm ntawm qhov kev sib txuas, thiab tom qab ntawd ib lossis ob lub core mus rau hauv av rwb thaiv tsev tsis kam telemetry. Yog tias lub core thiab lub core ntawm qhov muaj kev tiv thaiv rwb thaiv tsev dua li tus nqi ib txwm qis dua tus nqi ntawm qhov rwb thaiv tsev tsis kam no tus nqi siab dua 1000 ohms hu ua qhov tsis kam siab grounding fault; Ntawm qhov tod tes, yog qhov tsis kam qis grounding fault. Ob qho tib si ntawm cov teeb meem no hu ua kev sib txuas tsis raug thiab kev sib txuas hauv av.
Peb-theem core luv luv Circuit Court
Qhov loj ntawm qhov luv luv ntawm lub grounding resistance yog qhov ntsuas qhov luv luv ntawm lub cable ntawm peb-theem core. Muaj ob hom luv luv: qhov tsis kam qis, qhov tsis kam siab. Thaum peb-theem core luv luv, qhov tsis kam hauv av tsawg dua 1000 ohms yog qhov tsis kam qis, ntawm qhov tsis sib xws, yog qhov tsis kam siab.
Kev tshuaj xyuas ua rau:
Ua ntej: kev puas tsuaj sab nraud
Cov teeb meem ntawm cov cables nyob rau hauv kev puas tsuaj sab nraud yog qhov ua rau muaj teeb meem feem ntau. Lub cable raug puas tsuaj los ntawm lub zog sab nraud yav tom ntej yuav qhia txog thaj chaw loj ntawm kev tsis ua haujlwm fais fab. Piv txwv li, cov txheej txheem tsim kho cov kav dej hauv av, lub cable vim tias cov tshuab tsim kho rub loj dhau thiab raug rub tawm; kev rwb thaiv tsev cable, txheej tiv thaiv vim yog kev khoov ntau dhau ntawm lub cable thiab kev puas tsuaj; kev txiav cable tev tawm ntau dhau thiab cov cim riam tob dhau. Cov ntsiab lus sab nraud ncaj qha no yuav tsim kev puas tsuaj rau lub cable.
Qhov thib ob: rwb thaiv tsev noo noo
Cov txheej txheem tsim cov cable tsis tau ua kom zoo yuav ua rau txheej tiv thaiv ntawm cov cable tawg; cov qhov sib txuas ntawm cov cable tsis tau kaw; lub tes tsho tiv thaiv cable hauv cov khoom siv cable raug tho lossis tej zaum raug xeb. Cov no yog cov laj thawj tseem ceeb rau cov dej noo ntawm cov rwb thaiv tsev cable. Tam sim no, qhov tsis kam ntawm cov rwb thaiv tsev poob qis, tam sim no nce ntxiv, ua rau muaj teeb meem fais fab.
Peb: tshuaj lom neeg xeb
Yog tias lub rwb thaiv tsev cable ua haujlwm ntev ntev, nws yuav kub heev. Yog tias lub rwb thaiv tsev cable ua haujlwm ntev hauv qhov chaw tsis zoo, nws cov khoom siv yuav hloov pauv, ua rau lub rwb thaiv tsev cable laus thiab txawm tias poob nws cov txiaj ntsig, teeb meem fais fab yuav tshwm sim.
Plaub: kev ua haujlwm ntev dhau
Yog tias cov cable ua haujlwm ntev hauv qhov chaw ib puag ncig, yog tias cov txheej rwb thaiv tsev ntawm cov kab tsis huv lossis laus, nrog rau lwm yam xws li xob laim thiab lwm yam kev cuam tshuam ntawm lub zog hluav taws xob, kev thauj khoom ntau dhau yuav ua rau muaj cua sov ntau, nws yooj yim heev rau kev nthuav qhia cov teeb meem cable.
Lub sijhawm tshaj tawm: Lub Kaum Hli-10-2023