Nyob rau hauv lub ntiaj teb no niaj hnub no, kev siv cov txiv kab ntxwv ncig cables tau dhau los ua ib qho chaw hauv ntau yam kev lag luam, kev lag luam, thiab kev siv vaj tse. Cov cables no feem ntau nyiam rau lawv qhov pom kev siab, yoog raws, thiab ua haujlwm ntev. Txawm li cas los xij, thaum cov cables no tau teeb tsa sab nraum zoov lossis hauv ib puag ncig uas lawv raug rau cov ntsiab lus, qhov kev xav tseem ceeb yog lawv lub peev xwm los tiv thaiv ultraviolet (UV) hluav taws xob los ntawm tshav ntuj. Tsab ntawv xov xwm no yuav qhia txog seb cov kab hluav taws xob kab hluav taws xob puas yog UV-resistant thiab tsim nyog rau kev siv sab nraum zoov, thiab tseem yuav tshawb txog cov xwm txheej xws li SAA daim ntawv pov thawj, Australia cov qauv, thiab AS / NZS 5000.1 uas tswj kev tsim thiab kev ua haujlwm ntawm cov cables.
To taub covTxiv kab ntxwv Circular Cable
Ua ntej hais txog qhov teeb meem tshwj xeeb ntawm UV tiv thaiv, nws yog ib qho tseem ceeb kom nkag siab tias lub txiv kab ntxwv lub voj voog yog dab tsi thiab nws feem ntau siv rau dab tsi.
Lub txiv kab ntxwv lub voj voog yog ib hom hluav taws xob cable uas yooj yim txheeb xyuas los ntawm nws lub tsho txiv kab ntxwv ci ntsa iab. Lub cable muaj cov khoom tseem ceeb hauv qab no:
Tus coj: Cov no feem ntau yog ua los ntawm tooj liab lossis txhuas thiab muaj lub luag haujlwm rau nqa hluav taws xob tam sim no. Copper conductors feem ntau yog siv vim lawv superior conductivity.
Rwb thaiv tsev: Nyob ib puag ncig ntawm cov conductors, lub rwb thaiv tsev ua haujlwm tiv thaiv hluav taws xob luv luv thiab tiv thaiv cov conductors ntawm ib puag ncig yam. Cov ntaub ntawv rwb thaiv tsev muaj xws li PVC (polyvinyl chloride), XLPE (cross-linked polyethylene), thiab ntau yam khoom siv roj hmab.
Jacket: Lub tsho sab nrauv yog txheej txheej tiv thaiv sab nraud uas tiv thaiv cov kab hluav taws xob los ntawm ib puag ncig ib puag ncig, suav nrog kev puas tsuaj, dej noo, thiab tshuaj lom neeg. Nyob rau hauv cov ntaub ntawv ntawm cov txiv kab ntxwv ncig, lub tsho sab nrauv feem ntau yog tsim los ntawm cov ntaub ntawv xws li PVC, TPE (thermoplastic elastomer), los yog roj hmab, uas muab ntau yam kev ua haujlwm ntev thiab ua haujlwm rau sab nraud.
Tiv thaiv: Qee cov kab kab kab kab kab kab uas muaj cov kab hluav taws xob txuas ntxiv nrog cov ntaub thaiv npog los yog armoring los muab kev tiv thaiv ntxiv tiv thaiv electromagnetic cuam tshuam (EMI) thiab cov neeg kho tshuab kev ntxhov siab.
Cov kab hluav taws xob no tau siv dav hauv cov ntawv thov uas xav tau kev pom kev siab, kev ua haujlwm ruaj khov, thiab hloov tau yooj yim, xws li kev faib hluav taws xob, kev nyab xeeb circuits, cov tshuab xwm txheej ceev, thiab kev teeb tsa cov tshuab hnyav.
UV Radiation yog dab tsi thiab nws cuam tshuam rau cables li cas?
UV hluav taws xob yog ib feem ntawm lub hnub ci uas muaj zog ntau dua li pom lub teeb. Thaum UV hluav taws xob ua lub luag haujlwm tseem ceeb hauv lub neej hauv ntiaj teb, nws tuaj yeem ua rau muaj kev puas tsuaj loj rau cov ntaub ntawv uas raug rau lub sijhawm. Cables uas raug UV hluav taws xob rau lub sij hawm ntev tuaj yeem raug kev txom nyem los ntawm:
Degradation ntawm cov khoom Jacket: Kev raug UV hluav taws xob ntev ntev tuaj yeem ua rau lub tsho sab nrauv ntawm lub cable ua nkig, tawg, lossis tawg. Qhov kev degradation no txo qhov kev ua tau zoo ntawm cov txheej txheem tiv thaiv sab nraud, nthuav tawm cov khoom siv sab hauv ntawm lub cable rau ib puag ncig cov ntsiab lus xws li ya raws, plua plav, thiab av.
Poob Flexibility: Cov ntaub ntawv zoo li PVC thiab qee hom roj hmab tuaj yeem poob lawv qhov yooj yim thaum raug UV rays. Raws li lub tsho hnyav dua, lub cable yuav poob nws lub peev xwm khoov thiab flex kom zoo, ua rau muaj teeb meem kev teeb tsa thiab muaj kev pheej hmoo siab ntawm kev ua haujlwm tsis zoo.
Txo lub neej ntev: UV kev puas tsuaj tuaj yeem ua rau lub cable degrade sai dua li nws xav tau nyob rau hauv cov xwm txheej ib txwm muaj, txo cov kev pab cuam lub neej ntawm cable thiab ua rau muaj kev ua tsis tiav ntxov.
Yog li ntawd, UV tsis kam yog qhov tseem ceeb hauv kev txiav txim siab seb lub cable puas tsim nyog rau kev siv sab nraum zoov lossis hauv qhov chaw raug tshav ntuj.
UV Resistance ntawm Orange Circular Cables
Txawm hais tias ib lub txiv kab ntxwv puag ncig yog UV-resistant feem ntau nyob ntawm cov ntaub ntawv siv rau nws lub tsho sab nrauv thiab rwb thaiv tsev. Cov ntaub ntawv sib txawv muaj ntau theem ntawm kev tiv thaiv UV hluav taws xob.
1. PVC (Polyvinyl Chloride) rwb thaiv tsev thiab tsho
PVC yog ib qho ntawm cov khoom siv feem ntau siv rau cov rwb thaiv tsev thiab cov tsho sab nrauv ntawm cov kab hluav taws xob, nrog rau cov kab txiv kab ntxwv ncig. Nws yog pheej yig, dav, thiab muaj cov khoom siv hluav taws xob zoo. Txawm li cas los xij, PVC feem ntau tsis yog UV-resistant. Sij hawm dhau mus, raug tshav ntuj tuaj yeem ua rau cov tsho PVC tawg, ua nkig, tawg, lossis tawg. Qhov no yog qhov teeb meem tshwj xeeb rau kev siv sab nraum zoov qhov twg cov cable raug tshav ntuj.
Txhawm rau txhim kho UV tsis kam ntawm PVC-insulated cables, UV stabilizers tuaj yeem muab ntxiv rau PVC tsim thaum tsim khoom. Cov stabilizers no pab tiv thaiv cov kab hluav taws xob los ntawm cov teeb meem ntawm UV hluav taws xob, tab sis txawm tias nrog cov khoom ntxiv no, PVC tseem tuaj yeem degrade sai dua li lwm cov ntaub ntawv nyob rau hauv lub sij hawm ntev UV raug.
Rau kev siv sab nraum zoov, cables nrog PVC tsho feem ntau haum rau ib puag ncig uas lawv tsis raug tshav ntuj ncaj qha rau lub sijhawm ntev. Txawm li cas los xij, rau cov ntawv thov uas lub cable yuav raug tshav ntuj tas li lossis hnyav, lwm cov ntaub ntawv yuav yog qhov kev xaiv zoo dua.
2. XLPE (Cross-Linked Polyethylene) rwb thaiv tsev
XLPE yog lwm cov khoom siv rwb thaiv tsev rau cov txiv kab ntxwv ncig, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas yuav tsum tau ua haujlwm siab dua. XLPE muaj kev tiv thaiv zoo dua rau cov cua sov thiab tshuaj lom neeg piv rau PVC, thiab nws tuaj yeem tswj tau qhov kub thiab txias. Thaum XLPE muaj qee qhov kev tiv thaiv rau UV hluav taws xob, nws tseem raug rau UV degradation thaum raug rau lub hnub ntev ntev. Vim li no, XLPE-insulated cables yuav xav tau ib lub tsho tiv thaiv UV ntxiv los tiv thaiv cable los ntawm tshav ntuj.
Txawm li cas los xij, XLPE cables feem ntau ua ke nrog UV-resistant coatings lossis cov tsho sab nrauv los txhim kho lawv cov kev ua tau zoo tag nrho hauv qhov chaw sab nraum zoov. Cov txheej txheem no feem ntau yog tsim los ntawm cov ntaub ntawv zoo li TPE (thermoplastic elastomer) lossis roj hmab, uas muaj kev tiv thaiv UV thiab ua haujlwm ntev hauv qhov hnyav sab nraum zoov.
3. Rubber thiab TPE (Thermoplastic Elastomer)Jackets
Cov khoom siv roj hmab, suav nrog EPDM (ethylene propylene diene monomer) thiab SBR (styrene-butadiene roj hmab), muaj zog tiv taus UV hluav taws xob thiab feem ntau siv rau sab nraum zoov cables. Cov tsho roj hmab yog hloov tau yooj yim thiab ruaj khov dua li cov tsho PVC, thiab lawv tuaj yeem tiv thaiv kev tawg, tawg, thiab brittleness los ntawm UV raug.
TPE tsho, feem ntau siv rau hauv cov cables uas yuav tsum tau yooj yim dua, kuj tseem tiv taus UV hluav taws xob. Cov ntaub ntawv no feem ntau yog siv rau cov cables uas yuav tsum tau tiv taus qhov hnyav sab nraum zoov, xws li cov raug tshav ntuj ncaj qha, qhov kub thiab txias, lossis raug tshuaj lom neeg.
Rau kev siv sab nraum zoov, cables nrog roj hmab lossis TPE tsho feem ntau yog qhov kev xaiv zoo tshaj plaws ntawm UV tsis kam thiab tag nrho cov kav ntev. Lawv muab cov kev tiv thaiv uas yuav tsum tau tiv thaiv UV kev puas tsuaj, kom ntseeg tau tias lub cable tuaj yeem tswj hwm nws cov qauv kev ncaj ncees thiab ua haujlwm tau zoo nyob rau lub sijhawm ntev ntawm kev raug tshav ntuj.
Cov qauv rau UV-Resistant Cables
Txhawm rau kom ntseeg tau tias cov cables tsim nyog rau kev siv sab nraum zoov, cov neeg tsim khoom yuav tsum ua raws li ntau yam qauv thiab cov ntawv pov thawj uas tswj hwm lawv cov kev ua tau zoo nyob rau hauv ib puag ncig hnyav. Hauv Australia thiab New Zealand, cov qauv no suav nrog SAA daim ntawv pov thawj, Australia tus qauv, thiabAS/NZS 5000.1, uas qhia txog qhov yuav tsum tau ua rau cov khoom siv, kev tsim kho, thiab kev sim cov hluav taws xob cables.
1. SAA Certificate
Daim ntawv pov thawj SAA yog daim ntawv pov thawj uas ua kom cov cable ua tau raws li cov qauv kev nyab xeeb rau kev siv hauv Australia thiab New Zealand. Rau cov cables npaj rau kev siv sab nraum zoov, SAA daim ntawv pov thawj lees paub tias cov cable tau raug sim los xyuas kom meej tias nws tiv thaiv UV, nrog rau lwm yam ib puag ncig, thiab tuaj yeem siv nyab xeeb rau hauv cov xwm txheej uas nws yuav raug tshav ntuj.
2. Australia Standards
Australian cov qauv, xws li AS / NZS 5000.1, muab cov lus qhia rau kev tsim kho thiab kev ua haujlwm ntawm cov hluav taws xob cables, suav nrog lawv cov kev tiv thaiv UV. Cov kab hluav taws xob tsim los rau kev siv sab nraum zoov yuav tsum ua kom tau raws li cov qauv tiv thaiv UV kom ntseeg tau tias lawv yuav tsis degrade thaum raug tshav ntuj rau lub sijhawm ntev.
3. AS/NZS 5000.1
AS / NZS 5000.1 tus qauv qhia txog kev ua tau zoo ntawm cov cables siv hauv cov khoom siv hluav taws xob tsawg, kom ntseeg tau tias cov cables ua tau raws li qhov yuav tsum tau muaj cov khoom siv hluav taws xob, hluav taws xob, thiab ib puag ncig, nrog rau kev tiv thaiv UV hluav taws xob. Cov qauv no muab cov kev taw qhia tseem ceeb thaum xaiv cov kab kab kab kab kab rau sab nraum zoov, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov uas lawv yuav raug tshav ntuj.