Cov kab hluav taws xob nruab nrab ua lub luag haujlwm tseem ceeb hauv kev faib hluav taws xob, tshwj xeeb tshaj yog nyob rau hauv ib lub tebchaws xws li Australia uas xav tau lub zog loj zuj zus. Cov kab hluav taws xob nruab nrab tsis yog tsuas yog siv dav hauv cov phiaj xwm hluav taws xob hauv nroog, cov ntawv thov kev lag luam thiab cov tshuab hluav taws xob txuas ntxiv, tab sis tseem muaj cov haujlwm tseem ceeb hauv kev xa hluav taws xob. Raws li qhov kev xav tau ntawm qhov hluav taws xob thiab lub zog ntawm lub zog xa hluav taws xob nce, cov qauv tsim ntawm cov cables tau dhau los ua nruj, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov txheej thaiv thaiv.
Tsab ntawv xov xwm no yuav tshawb nrhiav qhov tob ntawm kev tiv thaiv kev tsim qauv ntawm Australian nruab nrab hluav taws xob cables, tsom mus rau kev tsim qauv tsim ntawm 11kV tooj liab cables, 5kV nruab nrab voltage cables, 35kV nruab nrab voltage cables thiab nruab nrab voltage armored cables thiab lawv cov kev ua tau zoo hauv kev siv tswv yim.
1. Lub luag hauj lwm ntawm cov ntaub thaiv npog
Lub shielding txheej ntawm nruab nrab voltage cable muaj ntau lub luag haujlwm tseem ceeb hauv lub zog hluav taws xob, feem ntau suav nrog:
Tiv thaiv electromagnetic cuam tshuam (EMI): Cov txheej tiv thaiv ntawm qhov nruab nrab voltage cable tuaj yeem txo qhov cuam tshuam ntawm electromagnetic cuam tshuam rau cov khoom siv thiab ib puag ncig, thiab xyuas kom meej tias lub zog xa hluav taws xob tsis cuam tshuam los ntawm cov suab nrov sab nraud.
Tiv thaiv lub cable los ntawm ib puag ncig sab nraud: Cov txheej thaiv tiv thaiv tuaj yeem tiv thaiv cov kab hluav taws xob los ntawm kev puas tsuaj, tshuaj lom neeg corrosion, ya raws, ultraviolet rays thiab lwm yam sab nraud rau qee yam.
Tiv thaiv hluav taws xob tsis raug: Cov txheej thaiv tiv thaiv tuaj yeem cuam tshuam qhov tam sim no thiab tiv thaiv cov hluav taws xob tam sim no thiab cov hluav taws xob tsis raug (xws li luv luv Circuit Court) los ntawm kev puas tsuaj rau cov cable thiab nws cov khoom nyob ib puag ncig.
Txhim kho cov neeg kho tshuab lub zog ntawm lub cable: Hauv qee qhov kev siv, txheej thaiv thaiv tsis yog tsuas yog muaj hluav taws xob ua haujlwm xwb, tab sis kuj tseem ua haujlwm ntawm kev txhim kho cov cable compression, nro thiab khoov tsis kam.
2. Cov qauv thiab cov kev cai rau cov kab hluav taws xob nruab nrab hauv Australia
Hauv tebchaws Australia, kev tsim thiab siv cov khoom siv hluav taws xob nruab nrab yuav tsum ua raws li cov qauv hauv lub tebchaws nruj thiab cov kev xav tau ntawm kev lag luam, tshwj xeeb tshaj yog nyob rau hauv kev tsim thiab xaiv cov khoom siv ntawm cov txheej thaiv kev tiv thaiv. Cov hauv qab no yog ob peb yam tseem ceeb tsim thiab qauv:
AS/NZS 1429.1 txheem
Kev sib koom ua ke Australian thiab New Zealand tus qauv AS / NZS 1429.1 yog cov ntaub ntawv tseem ceeb rau kev tsim thiab tsim cov kab hluav taws xob nruab nrab. Cov txheej txheem no qhia txog cov kev xav tau ntawm cov khoom siv hluav taws xob nruab nrab, suav nrog cov rwb thaiv tsev, cov khoom siv hluav taws xob, cov txheej txheem tiv thaiv, cov ntaub thaiv sab nraud, thiab kev sim. Kev tiv thaiv txheej tsim ntawm nruab nrab voltage cables yuav tsum ua raws li tus qauv no kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov cables nyob rau hauv high voltage.
Xaiv cov khoom siv tiv thaiv zoo
Cov txheej thaiv ntawm Australian nruab nrab voltage cables feem ntau siv hlau (xws li tooj liab lossis txhuas) thiab cov khoom tsis yog hlau (xws li conductive polymer). Hlau thaiv cov ntaub ntawv muab kev ua tau zoo ntawm electromagnetic shielding kev ua tau zoo, thaum cov khoom siv hluav taws xob polymer yog qhov tsim nyog rau cov khoom siv hluav taws xob los yog cov ntawv thov tshwj xeeb rau qhov hnyav.
Ua raws li cov ntawv pov thawj thoob ntiaj teb
Australian nruab nrab voltage cables feem ntau yog tsim los kom tau raws li thoob ntiaj teb cov qauv ntawv pov thawj xws li IEC (International Electrotechnical Commission) thiab UL (Underwriters Laboratories) kom ntseeg tau tias muaj kev ntseeg siab thiab kev nyab xeeb ntawm cov cables thoob ntiaj teb.
Dej tsis kam thiab corrosion kuj yuav tsum tau
Rau nruab nrab voltage cables nyob rau hauv ib co tshwj xeeb ib puag ncig (xws li underground nteg, av noo ib puag ncig los yog marine ib puag ncig), lub shielding txheej tsim yuav tsum kuj muaj dej tsis kam thiab corrosion kuj los tiv thaiv ya raws thiab tshuaj los ntawm invading lub cable sab hauv.
3. Shielding txheej tsim ntawm ntau hom nruab nrab voltage cables
Nyob ntawm qib voltage, daim ntawv thov scenario thiab ib puag ncig sab nraud, muaj ntau ntau yam sib txawv ntawm nruab nrab voltage cables ntawm Australian lag luam, thiab txhua hom cable shielding txheej tsim muaj nws tus kheej tshwj xeeb yuav tsum tau.
1. 11kV tooj liab cable
11kV tooj liab cable yog dav siv nyob rau hauv lub nroog fais fab kev sib txuas, cov chaw muaj thiab nruab nrab-qhov loj qhov hluav taws xob kis tau tus mob systems. Txij li thaum tooj liab muaj qhov ua haujlwm qis dua thiab kev ua haujlwm zoo dua, 11kV tooj liab cables feem ntau siv tooj liab conductors kom ntseeg tau tias kev sib kis qis dua.
Shielding txheej tsim yuav tsum tau: Cov txheej thaiv ntawm tooj liab cables feem ntau yog tsim los ntawm tooj liab braided mesh los yog txhuas ntawv ci. Copper braided mesh muaj cov khoom siv hluav taws xob zoo thiab tuaj yeem txo qhov cuam tshuam ntawm electromagnetic cuam tshuam. Aluminium ntawv ci yog siv los txhim kho cov kav ntev thiab lub zog txhua yam ntawm cable.
Corrosion thiab oxidation kuj: Txij li thaum tooj liab conductors tau yooj yim oxidized, kev tiv thaiv oxidation yuav tsum tau ua nyob rau hauv lub shielding txheej tsim ntawm tooj liab cables kom ntseeg tau tias cov khoom tooj liab tsis deteriorate thaum raug huab cua ntev.
2. 5kV nruab nrab voltage cable
5kV nruab nrab voltage cables feem ntau yog siv nyob rau hauv me me thiab nruab nrab-qhov loj qhov hluav taws xob kis tau tus mob systems, haum rau cov tsev lag luam, thaj chaw nyob thiab ib co nruab nrab thiab tsawg load zog xav tau scenarios.
Shielding txheej tsim yuav tsum tau: Nyob rau hauv 5kV nruab nrab voltage cables, lub shielding txheej feem ntau yog tsim los ntawm txhuas ntawv ci, tooj liab braided mesh los yog conductive polymer txheej. Txawm hais tias qhov hluav taws xob tsawg, lub cable tseem yuav tsum muaj qee yam kev tiv thaiv hluav taws xob cuam tshuam thiab kev nyab xeeb hluav taws xob. Lub shielding txheej ntawm xws li cables feem ntau tsis xav tau kev tiv thaiv ntau dhau, thiab feem ntau tsom rau kev cuam tshuam ntawm electromagnetic cuam tshuam.
Kev xaiv cov khoom siv: Cov khoom siv tiv thaiv ntawm 5kV cables feem ntau yog xaiv los ntawm cov ntawv txhuas thiab cov ntaub ntawv polymer vim lawv sib zog thiab muaj hluav taws xob tiv thaiv kev ua haujlwm txaus.
3. 35kV nruab nrab voltage cable
35kV nruab nrab voltage cable yog tsuas yog siv rau loj-scale fais fab kis kab mob, thiab yog dav siv nyob rau hauv industrial cheeb tsam, loj coj mus muag vaj tse thiab lub zog hluav taws xob systems uas yuav tsum tau nyob rau hauv lub sij hawm ntev fais fab kis.
Shielding tsim yuav tsum tau: Nyob rau hauv 35kV nruab nrab voltage cables, lub shielding tsim yog tshwj xeeb tshaj yog complex thiab feem ntau txais ib tug ntau-txheej shielding qauv. Qhov no suav nrog cov ntaub thaiv npog sab nrauv aluminium, sab hauv tooj liab braided mesh, thiab cov khoom siv hluav taws xob polymer shielding. Multi-txheej shielding tsis tau tsuas yog zoo suppress electromagnetic cuam tshuam, tab sis kuj txhim khu lub cable lub peev xwm los tiv thaiv txhua yam kev puas tsuaj.
Dej tsis kam thiab tshuaj tiv thaiv corrosion: 35kV cables feem ntau yog siv nyob rau hauv ib puag ncig hnyav. Kev tsim cov ntaub thaiv npog yuav tsum muaj cov yam ntxwv ntawm cov dej tsis kam, kev tiv thaiv corrosion, thiab tshuaj lom neeg los xyuas kom meej tias lub cable tuaj yeem ua haujlwm ruaj khov thiab mus sij hawm ntev hauv qhov chaw ntub dej lossis tshuaj lom neeg.
4. Nruab nrab Voltage Armored Cable
Nruab nrab voltage armored cables yog tsim los tiv thaiv siab mechanical shocks thiab feem ntau siv nyob rau hauv ib puag ncig uas yuav tsum tau kev tiv thaiv ntxiv, xws li underground nteg los yog raug rau cov cheeb tsam uas muaj siab sab nraud. Hom kab no ntxiv cov hlau sheath (feem ntau yog steel hlau braid lossis aluminium alloy khoom) rau sab nraud ntawm cov ntaub thaiv npog los txhim kho cov cable tensile thiab compressive zog.
Shielding tsim yuav tsum tau: Ntxiv nrog rau cov pa electromagnetic shielding, lub shielding txheej ntawm nruab nrab voltage armored cables kuj yuav tsum tau muaj ntxiv txhua yam kev puas tsuaj kuj. Cov ntaub ntawv sheath (xws li txhuas ntawv ci thiab steel hlau braid) muab kev tiv thaiv los tiv thaiv sab nraud los ntawm kev puas tsuaj rau lub cable.
High voltage thiab ib puag ncig kuj: Txij li thaum nruab nrab voltage armored cables feem ntau siv nyob rau hauv hnyav ib puag ncig, lub shielding txheej yuav tsum tau tsim kom muaj ib tug high degree ntawm high voltage kuj raws li zoo raws li UV thiab corrosion kuj.
4. Cov teeb meem tseem ceeb hauv kev thaiv txheej txheej tsim
Thaum tsim cov txheej tiv thaiv ntawm nruab nrab voltage cables, engineers yuav tsum kov yeej cov teeb meem hauv qab no:
Electromagnetic cuam tshuam (EMI) suppression
Nrog rau kev siv dav dav ntawm cov khoom siv hluav taws xob hluav taws xob, qhov chaw ntawm electromagnetic cuam tshuam tau nce. Yog li ntawd, kev tiv thaiv txheej tsim ntawm nruab nrab voltage cables yuav tsum muaj txiaj ntsig txaus los tiv thaiv cov hluav taws xob sab nraud los ntawm kev cuam tshuam nrog kev xa xov hluav taws xob.
Environmental adaptability
Lub shielding txheej ntawm cable xav tau kom muaj kev ua tau zoo nyob rau hauv huab ib puag ncig, xws li kub, tsis tshua muaj kub, av noo los yog siab corrosion ib puag ncig. Thaum tsim, xyuas kom meej tias kev xaiv cov ntaub thaiv npog cov ntaub ntawv tuaj yeem hloov mus rau qhov sib txawv ntawm ib puag ncig.
Sib npaug ntawm kev tiv thaiv txhua yam thiab kev tiv thaiv hluav taws xob
Cov txheej thaiv thaiv yuav tsum tsis yog tsuas yog muaj hluav taws xob cais tawm, tab sis kuj tuaj yeem tiv taus qhov cuam tshuam thiab siab ntawm cable hauv daim ntawv thov tiag tiag. Yuav ua li cas sib npaug ntawm ob qhov kev xav tau no yog ib qho kev sib tw tseem ceeb hauv kev tiv thaiv txheej tsim.