PV kab, Kuj hu ua photovoltaic cable, nws yog ib tug tub ntxhais hlau siv los txuas photovoltaic fais fab system panels. Lub tshuab hluav taws xob photovoltaic lossis lub hnub ci vaj huam sib luag yog lub tshuab hluav taws xob tsim hluav taws xob uas ntes lub hnub ci los tsim hluav taws xob los ntawm kev hloov hluav taws xob. Hluav taws xob yog tsim los ntawm lub vaj huam sib luag thiab yuav tsum tau PV xov hlau xa thiab rov ua dua cov hluav taws xob hluav taws xob rau cov ntsiab lus los yog cov khoom siv. PV hlau yog ib hom xov hlau tsim rau kev siv photovoltaic.
NEC (Electrical Code) tau tsim tsab xov xwm 690 rau hnub ci photovoltaic (PV) tshuab los coj cov hluav taws xob hluav taws xob hluav taws xob, array circuits, inverters, thiab them nyiaj controllers ntawm photovoltaic systems. NEC feem ntau yog siv rau hauv ntau qhov kev teeb tsa hauv Tebchaws Meskas (uas yuav raug raws li cov cai hauv zos).
Tshooj 690, Ntu 4 ntawm 2017 NEC tso cai rau ntau txoj hauv kev hauv cov tshuab hluav taws xob photovoltaic. Rau ib leeg conductors, UL teev USE-2 (kev pabcuam hauv av nkag) thiab PV cable hom tso cai rau qhov chaw sab nraum zoov ntawm PV qhov chaw nyob hauv PV array.
Cov kab photovoltaic kuj tau tso cai rau muab tso rau hauv cov tais rau sab nraum zoov photovoltaic qhov chaw circuits thiab photovoltaic output circuits yam tsis tas yuav tsum tau siv cov khoom ntsuas ntsuas. Yog tias PV qhov chaw thiab cov khoom siv hluav taws xob ua haujlwm ntawm qhov hluav taws xob ntau tshaj 30 volts hauv qhov chaw nkag tau, muaj qhov txwv tiag. Nyob rau hauv cov ntaub ntawv no, MC hom los yog haum conductors yuav tsum tau muab ntsia rau hauv lub raceway.
NEC tsis paub Canadian hom npe, xws li RWU90 cables, RPV cables, lossis RPVU cables siv rau hnub ci daim ntawv thov, uas tsis suav nrog cov npe UL tsim nyog. Rau kev teeb tsa hauv Canada, Tshooj 64-210 ntawm 2012 CEC muab cov ntaub ntawv hais txog hom kev xaim hluav taws xob tso cai rau cov ntawv thov photovoltaic.
Qhov zoo ntawm photovoltaic
PV modules ua haujlwm ntawm qhov kub thiab txias thiab raug rau ntau yam ib puag ncig. NEC txwv ntau yam PV array daim ntawv thov siv -2 lossis PV kab. Cov cables no yuav tsum tau ua kom tau raws li qhov xav tau ntawm lub hnub tiv thaiv thiab ntsuas kub rau ib puag ncig.
PV xaim yog tsim los rau kev siv photovoltaic, thaum USE -2 cable hom feem ntau yog tsim los rau cov kev pabcuam nkag hauv av. Ob hom cables no feem ntau muaj cov khoom siv hluav taws xob XLPE thiab tuaj yeem tiv thaiv tshav ntuj thiab / lossis ncaj qha faus.
PV kabSib txawv ntawm USE-2 xov hlau nyob rau hauv cov nqe lus ntawm rwb thaiv tsev thickness, ntsuas voltage, thiab kev khiav hauj lwm kub. PV kab muaj ib txheej txheej rwb thaiv tsev tuab, uas tsim nyog rau kev tiv thaiv ntau qhov chaw hnyav. Qhov ntsuas hluav taws xob ntawm USE-2 yog siab li 600 V, thaum lub PV cable muab peb qhov ntsuas hluav taws xob: 600 V, 1 kV, thiab 2 kV. Qhov kub ua haujlwm siab dua ntawm USE-2 hom cable yog 90 º C, thaum PV hlau tuaj yeem tiv taus qhov kub siab dua.
PV hlau yog ib qho ntawm ob peb hom hlau uas muaj qhov ntsuas hluav taws xob ntau tshaj 600 V thiab ncaj qha faus yam tsis muaj kev tiv thaiv raws li NEC.
