Lub hnub ci cable yuav zoo ib yam li sab nraud. Qhov sib txawv yog feem ntau muab zais rau hauv tus neeg xyuas pib, rwb thaiv tsev, cov ntaub ntawv pov thawj thiab kev sib txuas.
1. Cov khoom siv cable cuam tshuam rau kev ua haujlwm hluav taws xob, tsis yog qhov hnyav xwb
Tus neeg xyuas pib yog txoj hauv kev uas txhua lub ampere ntawm DC tam sim no mus. Nws cov khoom siv tiag tiag, hla - ntu ntu, stranding zoo thiab kev tsim khoom sib xws ncaj qha cuam tshuam tsis kam, qhov hluav taws xob poob thiab tsim hluav taws xob.
Rau cov khoom siv tooj liab, cov neeg yuav khoom yuav tsum saib dhau qhov nominal loj xws li 4 mm² lossis 6 mm². Ib lub xov tooj uas sau tias "6 mm²" yuav tsum muaj cov neeg xyuas pib tsim kho thiab cov ntsiab lus tooj liab txaus. Undersized conductors tuaj yeem muaj kev tiv thaiv ntau dua li qhov xav tau, ua kom lub zog poob thiab kev ua haujlwm kub -tshwj xeeb tshaj yog nyob rau hauv DC khiav ntev lossis hauv siab - txoj hlua tam sim no.
Tinned tooj liab yog dav siv nyob rau hauv PV cable vim hais tias cov tin txheej pab txhim kho kev tiv thaiv oxidation nyob rau hauv sab nraum zoov thiab ntub chaw. Qhov no yog tshwj xeeb tshaj yog muaj feem cuam tshuam ntawm kev txiav tawm thiab cov ntsiab lus sib txuas crimp, qhov twg ntev -kev tiv thaiv kev ntseeg siab tseem ceeb.
Aluminium -alloy PV cable kuj tseem tuaj yeem yog qhov kev xaiv engineering siv tau qhov twg cov qauv tsim, cov khoom siv thiab cov khoom sib txuas tau tshwj xeeb rau nws. Nws muab cov nqi qis dua thiab cov khoom siv qis dua, tab sis nws yuav tsum tsis txhob raug kho raws li kev hloov ncaj qha rau tooj liab yam tsis tau kuaj xyuas tus neeg xyuas pib qhov loj me, qhov sib txuas sib txuas, txoj kev txiav tawm thiab daim ntawv pov thawj siv tau.
Cov lus nug tseem ceeb tsis yog yooj yim, "Puas yog lub cable pheej yig dua?" Nws yog:Puas yog lub cable no xa cov hluav taws xob thiab cov khoom siv hluav taws xob xav tau rau kev teeb tsa no?
2. PV ntawv pov thawj tsis yog lub logo - nws yog pov thawj ntawm kev tsim nyog
Ib qho hluav taws xob ib txwm tsis tuaj yeem haum rau DC sab ntawm lub hnub ci kev teeb tsa.
PV systems ua haujlwm sab nraum zoov rau ntau xyoo nyob rau hauv qhov raug UV, tshav kub cycling, av noo, cua txav thiab siab DC voltage. IEC 62930 tshwj xeeb yog sau rau DC photovoltaic cables mus txog 1,500 V DC thiab npog cov cables npaj rau PV- siv qhov system, suav nrog ntoo khaub lig- txuas cov rwb thaiv tsev thiab cov hlua khi.
Rau North American tej yaam num, UL 4703 yog ib qho tseem ceeb siv rau photovoltaic hlau. UL txheeb xyuas nws raws li tus qauv rau PV xaim nrog kev ua kom lub hnub ci zoo dua - cov kev cai tiv thaiv.
Yog li kev yuav khoom txhim khu kev qha yuav tsum xyuas:
Tus qauv twg siv rau lub khw muag khoom: IEC 62930, EN 50618, UL 4703 lossis lwm qhov kev xav tau hauv zos.
Seb daim ntawv pov thawj npog cov qauv kab kos, qhov ntsuas hluav taws xob thiab qhov loj ntawm tus neeg xyuas pib tau muab.
Txawm tias cov chaw tsim khoom tuaj yeem muab daim ntawv pov thawj traceable, daim ntawv tshaj tawm kev xeem thiab cov ntaub ntawv cim khoom.
Seb lub cable qhov ntsuas hluav taws xob, qhov kub thiab txias thiab ib puag ncig kev teeb tsa ua tau raws li qhov project tsim.
Ib daim ntawv pov thawj uas tau theej los ntawm lwm yam khoom, ib daim ntawv tas sij hawm, lossis lub logo uas tsis muaj qhov kev lees paub tau tsim kev tshuaj xyuas thiab kev lav phib xaub. Ntawm qhov project loj, tus nqi hloov pauv tsis yog - raws li DC cable tuaj yeem siab dua qhov pib txuag.
3. Connector compatibility yog ib tug zais tab sis tseem ceeb txaus ntshai
PV connectors feem ntau tshwm sim lub cev zoo sib xws. Qhov ntawd tsis txhais hais tias lawv tau txais kev sib raug zoo.
IEC Technical Report 63225 tshwj xeeb hais txog kev pheej hmoo tsis sib haum xeeb ntawm DC PV connectors ua los ntawm cov tuam txhab sib txawv. Txawm hais tias ob lub connectors tuaj yeem ua rau lub cev sib txawv, qhov sib txawv ntawm kev sib cuag geometry, lub caij nplooj ntoos hlav quab yuam, cov khoom kam rau ua, sealing qauv thiab kev ntsuas xauv tsim yuav cuam tshuam rau kev tiv thaiv kev tiv thaiv thiab kev cia siab ntev -.
Kev sib txuas tsis zoo tuaj yeem tsim cov cua sov hauv zos. Nyob rau tib lub sijhawm, thermal cycling, noo noo ingress lossis tsis txaus siab tuaj yeem ua rau qhov teeb meem tsis zoo. NREL tau txheeb xyuas PV connector tsis ua haujlwm raws li qhov muaj txiaj ntsig kev ntseeg siab thiab tau kawm txog lawv cov txiaj ntsig ntawm O&M tus nqi, kev tsim khoom ploj thiab kev lag luam. NREL kev taw qhia rau PV- qhov system resilience kuj qhia kom tsis txhob hla- cov khoom sib txuas yog qhov ua tau.
Vim li no, cov neeg yuav khoom yuav tsum tsis txhob kho "MC4-tshaj" raws li kev xav tau ua tiav. Ib txoj hauv kev zoo dua yog kom paub meej tias:
Qhov tseeb connector hom thiab series siv nyob rau sab module.
Seb qhov kev thov txuas tau pom zoo rau kev sib tw nrog cov khoom ntawd.
Seb lub kab inch, tus neeg xyuas pib loj thiab crimp davhlau ya nyob twg yog matched.
Seb qhov tseeb crimping cuab tam thiab installation torque yuav tsum muaj.
Txawm hais tias tag nrho cov cable - thiab - connector los ua ke muaj ntawv pov thawj tsim nyog los yog kev txhawb nqa.
Kev siv ib qho kev sib txuas sib txuas ua ke thoob plaws qhov project feem ntau muaj kev nyab xeeb dua li kev sib xyaw cov khoom zoo sib xws los ntawm ntau tus neeg muag khoom.
4. Tus nqi qis tshaj plaws tuaj yeem tsim cov nqi siab tshaj plaws
Nyob rau hauv ib lub hnub ci project, cables thiab connectors yog cov khoom me me uas muaj kev cuam tshuam loj. Ib qho teeb meem ntawm ib qho kev sib txuas ntawm DC yuav xav tau nrhiav qhov txhaum, cais ib txoj hlua, xa cov kws tshaj lij mus rau qhov chaw, hloov cov khoom siv thiab rov ntsuas lub voj voog. Hauv lub ru tsev nyuaj, suab puam, ntab -PV lossis roob tej yaam num, kev nkag tau thiab kev ua haujlwm tuaj yeem ceev tshaj qhov qub khoom txuag.
Yog li kev txiav txim siab yuav khoom ntse dua yog nyob ntawmtag nrho qhov project txaus ntshai, tsis yog tus nqi ib 'meter' xwb.
Ib tus kws tshaj lij hnub ci cable xa khoom yuav tsum muaj peev xwm muab cov ntaub ntawv qhia meej meej, cov ntaub ntawv pov thawj siv tau, cov ntsiab lus ntawm tus neeg xyuas pib, cov lus pom zoo txuas, cov ntaub ntawv ntim khoom thiab kev txhawb nqa rau qhov project- tshwj xeeb cable xaiv.
Ntawm SINELINK, peb tsom mus rau kev muab PV cable thiab cov kev daws teeb meem kev sib txuas uas txhawb nqa kev txhim kho txhim khu kev qha, cov ntaub ntawv meej meej thiab ntev - lub sijhawm ua haujlwm. Vim hais tias nyob rau hauv lub hnub ci tej yaam num, cov kev sib tw cable feem ntau tsis yog ib txwm pheej yig tshaj ib tug - nws yog ib qho uas yuav pab tau lub kaw lus muaj kev ruaj ntseg thiab ntseeg tau rau ntau xyoo.