Xyoo 2020-11-07
Photovoltaic hlau, tseem hu ua PV hlau, yog ib tug tib neeg xyuas pib xaim siv los txuas photovoltaic fais fab system panels.
Tus neeg xyuas pib ntawm lub photovoltaic cable yog tus neeg xyuas pib tooj liab lossis tin-plated tooj liab tus neeg xyuas pib, txheej rwb thaiv tsev yog hluav taws xob crosslinked polyolefin rwb thaiv tsev, thiab lub sheath yog hluav taws xob crosslinked polyolefin rwb thaiv tsev.Ntau cov DC cables nyob rau hauv photovoltaic fais fab chaw nres tsheb yuav tsum tau muab tso rau sab nraum zoov, thiab ib puag ncig tej yam kev mob yog hnyav.Cov ntaub ntawv cable yuav tsum yog raws li kev tiv thaiv ultraviolet, ozone, kub hloov pauv thiab tshuaj yaig.Nws yuav tsum muaj dej-pov thawj, tiv thaiv raug, txias, kub-resistant, thiab tiv thaiv ultraviolet.Hauv qee qhov chaw tshwj xeeb, tshuaj lom neeg xws li kua qaub thiab alkali kuj yuav tsum tau.
NEC (National Electrical Code of the United States) tau tsim tsab xov xwm 690 Hnub Ci Photovoltaic (PV) systems los coj cov tshuab hluav taws xob hluav taws xob, array circuits ntawm photovoltaic systems, inverters thiab them controllers.NEC feem ntau yog siv rau hauv ntau qhov kev teeb tsa hauv Tebchaws Meskas (cov kev cai hauv zos tuaj yeem siv tau).
2017 NEC Tshooj 690 Tshooj IV txoj kev xaim xaim tso cai rau ntau txoj kev xaim siv rau hauv cov tshuab hluav taws xob photovoltaic.Rau ib tus neeg xyuas pib, kev siv UL-certified USE-2 (kev pabcuam hauv av nkag) thiab PV hom xaim raug tso cai nyob rau hauv qhov chaw sab nraum zoov ntawm photovoltaic fais fab Circuit Court nyob rau hauv photovoltaic array.Nws tseem tso cai rau PV cables los nruab rau hauv cov tais rau sab nraum zoov PV qhov chaw circuits thiab PV tso zis circuits yam tsis tas yuav tsum tau siv ntsuas.Yog tias cov khoom siv hluav taws xob photovoltaic thiab cov khoom siv hluav taws xob ua haujlwm siab tshaj 30 volts hauv qhov chaw nkag tau, muaj qhov txwv tiag.Nyob rau hauv cov ntaub ntawv no, yuav tsum tau ib tug MC hom los yog haum conductor ntsia rau hauv raceway.
NEC tsis lees paub Canadian qauv npe, xws li RWU90, RPV lossis RPVU cables uas tsis muaj cov ntawv thov hnub ci dual UL.Rau kev teeb tsa hauv Canada, 2012 CEC Tshooj 64-210 muab cov ntaub ntawv hais txog hom kev xaim tso cai rau kev siv photovoltaic.
| Ordinary kab | Photovoltaic cable | |
| rwb thaiv tsev | Irradiation cross-linked polyolefin rwb thaiv tsev | PVC lossis XLPE rwb thaiv tsev |
| lub tsho | Irradiation cross-linked polyolefin rwb thaiv tsev | PVC hnab |
Cov khoom siv sib txawv uas tuaj yeem siv rau cov cables zoo tib yam yog cov khoom siv sib txuas zoo xws li polyvinyl chloride (PVC), roj hmab, elastomer (TPE) thiab cross-linked polyethylene (XLPE), tab sis nws yog ib qho kev khuv xim uas qhov siab tshaj plaws. Kub rau cov kab hluav taws xob zoo tib yam Tsis tas li ntawd, txawm tias PVC insulated cables nrog qhov ntsuas kub ntawm 70 ℃ feem ntau siv sab nraum zoov, tab sis lawv tsis tuaj yeem ua tau raws li qhov yuav tsum tau muaj qhov kub thiab txias, tiv thaiv UV thiab tiv thaiv txias.
Thaum cov kab hluav taws xob photovoltaic feem ntau raug rau lub hnub ci, lub hnub ci hluav taws xob feem ntau siv nyob rau hauv qhov chaw hnyav, xws li kub tsis tshua muaj hluav taws xob thiab hluav taws xob ultraviolet.Hauv tsev lossis txawv teb chaws, thaum huab cua zoo, qhov kub siab tshaj ntawm lub hnub ci yuav siab li 100 ℃.
Rau photovoltaic cables, thaum lub sij hawm installation thiab daim ntawv thov, cov cables tuaj yeem raug xa mus rau ntawm cov npoo ntse ntawm lub ru tsev layout.Nyob rau tib lub sijhawm, cov cables yuav tsum tiv taus siab, khoov, nro, interlaced tensile loads thiab muaj zog cuam tshuam, uas yog superior rau zoo tib yam cables.Yog tias koj siv cov kab hluav taws xob zoo tib yam, lub tsho muaj kev tiv thaiv UV tsis zoo, uas yuav ua rau kev laus ntawm cov hlua sab nraud ntawm lub cable, uas yuav cuam tshuam rau lub neej kev pab cuam ntawm lub cable, uas tuaj yeem ua rau muaj teeb meem xws li cable luv Circuit Court. , hluav taws tswb, thiab kev raug mob txaus ntshai rau cov neeg ua haujlwm.Tom qab tau irradiated, lub photovoltaic cable rwb thaiv tsev tsho muaj qhov kub thiab txias tsis kam, roj tsis kam, acid thiab alkali ntsev tsis kam, UV tiv thaiv, nplaim retardancy, thiab ib puag ncig tiv thaiv.Photovoltaic fais fab cables feem ntau yog siv nyob rau hauv ib puag ncig hnyav nrog kev pab cuam lub neej ntawm ntau tshaj 25 xyoo.
DC tsis kam ntawm cov tub ntxhais conductive ntawm cov khoom tiav ntawm 20 ℃ tsis ntau tshaj 5.09Ω / km.
Lub cable tiav (20m) yuav tsis tawg tom qab muab tso rau hauv (20 ± 5) ℃ dej rau 1h tom qab 5min voltage xeem (AC 6.5kV lossis DC 15kV).
Cov qauv ntev yog 5m, ntxiv (85 ± 2) ℃ dej distilled uas muaj 3% NaCl (240 ± 2) h, thiab cais cov dej ntws los ntawm 30cm.Siv lub DC 0.9kV voltage ntawm cov tub ntxhais thiab cov dej (cov tub ntxhais conductive txuas, thiab cov dej txuas nrog Nick).Tom qab tshem tawm cov ntawv, ua ib qho kev ntsuas dej immersion voltage.Qhov ntsuas hluav taws xob yog AC 1kV, thiab tsis tas yuav tsum tau tawg.
Kev rwb thaiv tsev ntawm cov kab tiav ntawm 20 ℃ tsis tsawg dua 1014Ω·cm,
Kev rwb thaiv tsev ntawm cov kab tiav ntawm 90 ℃ tsis tsawg dua 1011Ω·cm.
Qhov kev tiv thaiv nto ntawm lub tiav cable sheath yuav tsum tsis txhob tsawg dua 109Ω.
Kub (140 ± 3) ℃, lub sij hawm 240min, k = 0.6, indentation qhov tob tsis tshaj 50% ntawm tag nrho cov thickness ntawm rwb thaiv tsev thiab sheath.Thiab nqa tawm AC6.5kV, 5min voltage test, tsis tas yuav tawg.
Cov qauv muab tso rau hauv ib puag ncig nrog qhov kub ntawm 90 ℃ thiab cov av noo ntawm 85% rau 1000h.Tom qab txias rau chav tsev kub, qhov kev hloov pauv ntawm lub zog tensile yog ≤-30% thiab qhov kev hloov pauv ntawm elongation ntawm kev so yog ≤-30% piv nrog ua ntej kev xeem.
Ob pawg ntawm cov qauv tau muab tso rau hauv oxalic acid tov nrog ib qho concentration ntawm 45g / L thiab sodium hydroxide tov nrog ib qho concentration ntawm 40g / L, ntawm qhov kub ntawm 23 ° C rau 168h.Piv nrog rau cov tshuaj ua ntej immersion, lub zog tensile hloov tus nqi yog ≤ ± 30%, lub elongation ntawm tawg ≥100%.
Tom qab tag nrho cov cable muaj hnub nyoog rau 7 × 24h ntawm (135 ± 2) ℃, qhov hloov pauv ntawm tensile lub zog ua ntej thiab tom qab rwb thaiv tsev laus yog ≤ ± 30%, qhov kev hloov pauv ntawm elongation ntawm so yog ≤ ± 30%;Qhov hloov pauv ntawm lub zog tensile ua ntej thiab tom qab lub sheath yog laus yog ≤ -30%, hloov tus nqi ntawm elongation ntawm tawg ≤ ± 30%.
Txias kub -40 ℃, lub sij hawm 16h, qhov hnyav poob 1000g, qhov hnyav ntawm qhov cuam tshuam thaiv 200g, qhov siab poob 100 hli, yuav tsum tsis txhob pom cov kab nrib pleb ntawm qhov chaw.
Cov cua txias (-40 ± 2) ℃, lub sijhawm 16h, txoj kab uas hla ntawm lub pas ntsuas ntsuas yog 4 mus rau 5 npaug ntawm txoj kab uas hla sab nraud ntawm lub cable, winding 3 mus rau 4 zaug, tom qab qhov kev sim, yuav tsum tsis muaj qhov pom kev tawg ntawm lub plhaub. nto.
Qhov ntev ntawm cov qauv yog 20cm, thiab nws yog muab tso rau hauv ib lub nkoj kom qhuav rau 16h.Txoj kab uas hla ntawm cov pas ntsuas ntsuas siv hauv qhov kev sim khoov yog (2 ± 0.1) lub sij hawm ntawm txoj kab uas hla sab nraud.Chav ntsuas: kub (40 ± 2) ℃, txheeb ze av noo (55 ± 5)%, ozone concentration (200 ± 50) × 10-6%, Cua ntws: 0.2 txog 0.5 npaug ntawm lub chamber ntim / min.Cov qauv muab tso rau hauv lub thawv kuaj rau 72 teev.Tom qab qhov kev sim, yuav tsum tsis muaj qhov pom kev tawg ntawm lub qhov txhab.
Txhua lub voj voog: dej tsuag rau 18min, xenon teeb kom qhuav rau 102min, kub (65 ± 3) ℃, txheeb ze av noo 65%, tsawg zog nyob rau hauv cov xwm txheej ntawm wavelength 300 ~ 400nm: (60 ± 2) W / m2.Tom qab 720 teev, kev ntsuas khoov ntawm chav tsev kub tau ua tiav.Txoj kab uas hla ntawm tus pas ntsuas ntsuas yog 4 mus rau 5 npaug ntawm txoj kab uas hla sab nraud.Tom qab qhov kev sim, yuav tsum tsis muaj qhov pom kev tawg ntawm lub qhov txhab.
Nyob rau hauv chav tsev kub, qhov txiav ceev yog 1N / s, thiab tus naj npawb ntawm kev txiav txiav: 4 zaug.Cov qauv yuav tsum tau txav mus rau pem hauv ntej los ntawm 25mm thiab tig 90 ° clockwise txhua zaus.Sau lub zog nkag mus F thaum lub caij nplooj ntoos hlav steel koob hu rau tooj liab hlau, thiab qhov nruab nrab tus nqi tau txais yog ≥150·Dn1/2N (4mm2 seem Dn = 2.5mm)
Siv 3 ntu ntawm cov qauv, txhua ntu yog 25mm sib nrug, thiab tig 90 ° kom ua kom tag nrho 4 dents, qhov tob tob yog 0.05mm thiab perpendicular rau tooj liab hlau.Peb ntu ntawm cov qauv tau muab tso rau hauv lub thawv ntsuas ntawm -15 ° C, chav tsev kub, thiab + 85 ° C rau 3 teev, thiab tom qab ntawd raug mob ntawm lub mandrel nyob rau hauv txhua lub thawv kuaj.Txoj kab uas hla ntawm lub mandrel yog (3 ± 0.3) lub sij hawm qhov tsawg kawg nkaus txoj kab uas hla ntawm lub cable.Tsawg kawg ib tus qhab nia rau txhua tus qauv yog nyob rau sab nraud.Nws tsis tawg hauv AC0.3kV dej immersion voltage test.
Qhov txiav ntev ntawm cov qauv yog L1 = 300mm, muab tso rau hauv qhov cub ntawm 120 ° C rau 1 teev thiab muab tso rau hauv chav sov kom txias.Rov ua qhov cua txias thiab cua sov lub voj voog 5 zaug, thiab thaum kawg txias rau chav tsev kub.Lub thermal shrinkage ntawm cov qauv yuav tsum yog ≤2%.
Tom qab cov kab tiav lawm muab tso rau ntawm (60 ± 2) ° C rau 4 teev, nws raug rau qhov ntsuas hluav taws xob ntsug tau teev tseg hauv GB / T18380.12-2008.
PH thiab conductivity
Qauv tso kawm: 16h, kub (21 ~ 25) ℃, av noo (45 ~ 55)%.Ob qhov qauv, txhua (1000 ± 5) mg, raug crushed rau cov khoom qis dua 0.1 mg.Huab cua ntws (0.0157·D2) l·h-1 ± 10%, qhov kev ncua deb ntawm lub nkoj combustion thiab ntug ntawm qhov zoo cua sov cheeb tsam ntawm lub cub tawg yog ≥300mm, qhov kub ntawm lub combustion nkoj yuav tsum ≥935℃, 300m deb ntawm lub nkoj combustion (nyob rau hauv cov kev taw qhia ntawm huab cua ntws) Qhov kub yuav tsum yog ≥900 ℃.
Cov roj uas tsim los ntawm cov qauv kuaj yog sau los ntawm lub raj mis ntxuav roj uas muaj 450ml (PH tus nqi 6.5 ± 1.0; conductivity ≤0.5μS / mm) ntawm cov dej distilled.Lub sij hawm xeem: 30 min.Qhov yuav tsum tau muaj: PH≥4.3;conductivity ≤10μS / hli
Dongguan Slocable Photovoltaic Technology Co., Ltd.
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TEL: 0769-22010201
