Ngaba uyazi ukuba yintoni i-Photovoltaic (PV) yocingo?

       Ucingo lwefotovoltaic, eyaziwa ngokuba yi-PV wire, intambo yomqhubi omnye osetyenziselwa ukudibanisa iipaneli zenkqubo yamandla e-photovoltaic.

Inxalenye yomqhubi wentambo ye-photovoltaic ngumqhubi wobhedu okanye i-tin-plated copper conductor, i-insulation layer yi-radiation crosslinked polyolefin insulation, kunye ne-sheath yi-radiation crosslinked polyolefin insulation.Inani elikhulu leentambo ze-DC kwizikhululo zamandla e-photovoltaic kufuneka zibekwe ngaphandle, kwaye iimeko zokusingqongileyo zinzima.Izinto zekhebula kufuneka zisekelwe kwi-anti-ultraviolet, i-ozone, utshintsho olunzima lokushisa kunye nokuguguleka kweekhemikhali.Kufuneka ibe bubungqina bokufuma, i-anti-exposure, ibanda, ikwazi ukumelana nobushushu, kunye ne-anti-ultraviolet.Kwezinye iindawo ezikhethekileyo, izinto zeekhemikhali ezifana ne-asidi kunye ne-alkali nazo ziyafuneka.

IiMfuno zokuJonga iiKhowudi

I-NEC (iKhowudi yoMbane yeSizwe yase-United States) iphuhlise iinkqubo zeSiqendu 690 seSolar Photovoltaic (PV) ukukhokela iinkqubo zamandla ombane, iisekethe zoluhlu lweenkqubo ze-photovoltaic, ii-inverters kunye nabalawuli bentlawulo.I-NEC iqhele ukusetyenziswa kwiintlobo ezahlukeneyo zofakelo e-United States (imimiselo yendawo ingasebenza).

Inqaku le-NEC ye-2017 Inqaku le-690 Indlela ye-IV ye-wiring ivumela iindlela ezahlukeneyo zocingo ukuba zisetyenziswe kwiinkqubo ze-photovoltaic.Kubaqhubi ababodwa, ukusetyenziswa kwe-UL-certified USE-2 (umnyango wenkonzo engaphantsi komhlaba) kunye neentlobo ze-PV zocingo zivunyelwe kwindawo evelele yangaphandle yesiphaluka samandla e-photovoltaic kwi-photovoltaic array.Ikwavumela ukuba iintambo ze-PV zifakwe kwiitreyi zeesekethe zomthombo wangaphandle we-PV kunye neesekethe ze-PV zemveliso ngaphandle kwesidingo sokusetyenziswa okulinganisiweyo.Ukuba umbane we-photovoltaic kunye nomsebenzi wesiphaluka ophumayo ngaphezu kwe-30 volts kwiindawo ezifikelelekayo, kukho imida ngokwenene.Kule meko, uhlobo lwe-MC okanye umqhubi ofanelekileyo ofakwe kwi-raceway iyafuneka.

I-NEC ayiwaqapheli amagama emodeli yaseKhanada, anje ngeRWU90, RPV okanye iintambo zeRPVU ezingaqulathanga izicelo zelanga eziqinisekisiweyo ezimbini ze-UL.Ufakelo eKhanada, i-2012 CEC iCandelo 64-210 linika ulwazi malunga neentlobo ze-wiring ezivunyelwe kwizicelo ze-photovoltaic.

Umahluko phakathi kweentambo ze-photovoltaic kunye neentambo eziqhelekileyo

Izinto eziluncedo zePV

Izinto ezahlukeneyo ezinokuthi zisetyenziswe kwiintambo eziqhelekileyo zikumgangatho ophezulu wezinto eziphothiweyo eziphothiweyo ezifana ne-polyvinyl chloride (PVC), irabha, i-elastomer (i-TPE) kunye ne-cross-linked polyethylene (XLPE), kodwa lusizi ukuba eyona nto iphezulu kakhulu. iqondo lobushushu kwiintambo eziqhelekileyo Ukongeza, nkqu iintambo PVC ezigqunyiweyo ngeqondo lobushushu rated 70℃ zidla ngokusetyenziswa ngaphandle, kodwa abakwazi ukuhlangabezana neemfuno ubushushu obuphezulu, ukukhuselwa UV kunye nokumelana nokubanda.
Nangona iintambo ze-photovoltaic zihlala zivelele ekukhanyeni kwelanga, iinkqubo zamandla elanga zihlala zisetyenziselwa kwiindawo ezibuhlungu, ezifana nokushisa okuphantsi kunye nemitha ye-ultraviolet.Ekhaya okanye phesheya, xa imozulu ilungile, obona bushushu bobushushu belanga buya kuba buphezulu kangange-100℃.

——Umthwalo ochasene nomatshini

Kwiintambo ze-photovoltaic, ngexesha lofakelo kunye nesicelo, iintambo ziyakwazi ukuhanjiswa kwiindawo ezibukhali zokwakheka kwephahla.Kwangaxeshanye, iintambo kufuneka zimelane noxinzelelo, ukugoba, ukunyanzeliswa, ukunyanzeliswa kwemithwalo edibeneyo kunye nokuchasana okunamandla, okungaphezulu kweentambo eziqhelekileyo.Ukuba usebenzisa iintambo eziqhelekileyo, i-sheath inokusebenza kakubi kwe-UV yokukhusela, okuya kubangela ukuguga kwe-sheath yangaphandle yentambo, eya kuchaphazela ubomi benkonzo yentambo, enokukhokelela ekubonakaleni kweengxaki ezifana nekhebula elifutshane. , i-alam yomlilo, kunye nokwenzakala okuyingozi kubasebenzi.Emva kokuba i-irradiated, ijacket ye-photovoltaic ye-insulation ye-cable inokushisa okuphezulu kunye nokuchasana nokubanda, ukumelana neoli, i-asidi kunye ne-alkali ukumelana netyuwa, ukukhuselwa kwe-UV, ukutshatyalaliswa komlilo, kunye nokukhuselwa kwendalo.Iintambo zamandla e-Photovoltaic zisetyenziswa ikakhulu kwiindawo ezibuhlungu kunye nobomi benkonzo obungaphezu kweminyaka engama-25.

uMsebenzi oPhambili

1. DC ukuxhathisa

Ukuxhatshazwa kwe-DC ye-core conductive yentambo egqityiweyo kwi-20 ℃ ayikho ngaphezu kwe-5.09Ω/km.

2. Uvavanyo lombane wokuntywiliselwa emanzini

Intambo egqityiweyo (20m) ayisayi kwaphuka emva kokuntywiliselwa (20±5)℃ emanzini i-1h emva kovavanyo lombane oluyi-5min (AC 6.5kV okanye DC 15kV).

3. Ixesha elide lokumelana nombane we-DC

Ubude besampulu yi-5m, yongeza (85±2)℃ amanzi adibeneyo aqulethe i-3% NaCl (240±2) h, kwaye ahlule umphezulu wamanzi nge-30cm.Faka amandla ombane we-DC 0.9kV phakathi kondoqo kunye namanzi (undoqo wokuqhuba uqhagamshelwe, kwaye amanzi aqhagamshelwe kwi-Nick).Emva kokuthatha iphepha, yenza uvavanyo lombane wokuntywiliselwa emanzini.Amandla ombane ovavanyo yi-AC 1kV, kwaye akukho kuphazamiseka kuyadingeka.

4. Ukumelana ne-insulation

Ukumelana nokufakelwa kwentambo egqityiweyo kwi-20 ℃ ayikho ngaphantsi kwe-1014Ω·cm,
Ukuxhatshazwa kwe-insulation yentambo egqityiweyo kwi-90℃ ayikho ngaphantsi kwe-1011Ω · cm.

5. Ukumelana nomphezulu we-sheath

Ukumelana nomphezulu we-sheath yekhebula egqityiweyo akufanele ibe ngaphantsi kwe-109Ω.

Uvavanyo lokuSebenza

1. Uvavanyo loxinzelelo lobushushu obuphezulu (GB/T2951.31-2008)

Iqondo lobushushu (140±3)℃, ixesha 240min, k=0.6, ubunzulu be-indentation abudluli kwi-50% yobunzima bubonke be-insulation kunye ne-sheath.Kwaye uqhube i-AC6.5kV, uvavanyo lwe-voltage ye-5min, akukho kuphazamiseka kuyadingeka.

2. Uvavanyo lobushushu obumanzi

Isampulu ibekwe kwindawo eneqondo lobushushu le-90℃ kunye nokufuma okunxulumene ne-85% ye-1000h.Emva kokupholisa kwiqondo lokushisa kwegumbi, izinga lokutshintsha kwamandla e-tensile ngu-≤-30% kwaye izinga lokutshintsha kwe-elongation ngexesha lekhefu ngu-≤-30% xa kuthelekiswa nangaphambi kovavanyo.

3. Uvavanyo lokumelana ne-Acid kunye ne-alkali (GB/T2951.21-2008)

Amaqela amabini eesampuli agxininiswe kwisisombululo se-oxalic acid kunye ne-concentration ye-45g / L kunye nesisombululo se-sodium hydroxide kunye ne-concentration ye-40g / L, kwiqondo lokushisa kwe-23 ° C kwi-168h.Xa kuthelekiswa nesisombululo ngaphambi kokuntywiliselwa, izinga lokutshintsha amandla e-tensile laliyi-≤± 30%, ukunyuswa kwikhefu ≥100%.

4. Uvavanyo lokuhambelana

Emva kokuba yonke intambo igugile i-7 × 24h kwi-(135 ± 2) ℃, izinga lokutshintsha kwamandla e-tensile ngaphambi nangemva kokuguga kwe-insulation ≤± 30%, izinga lokutshintsha kobude kwikhefu ≤± 30%;izinga lokutshintsha kwamandla okuqina ngaphambi nangemva kokuba i-sheath iguga ngu-≤ -30%, utshintsho lwesantya sobude kwikhefu ≤± 30%.

5. Uvavanyo lwempembelelo yobushushu obuphantsi (8.5 kwi-GB/T2951.14-2008)

Ubushushu bokupholisa -40 ℃, ixesha le-16h, ubunzima bobunzima be-drop 1000g, ubunzima bebhloko yempembelelo 200g, ukuphakama kwe-drop 100mm, akufuneki kubekho iintanda ezibonakalayo phezu komhlaba.

6. Uvavanyo lokugoba lobushushu obuphantsi (8.2 kwi-GB/T2951.14-2008)

Ubushushu bokupholisa (-40 ± 2) ℃, ixesha le-16h, ububanzi bentonga yovavanyo yi-4 ukuya kumaxesha ama-5 ububanzi obungaphandle bentambo, ukujija ama-3 ukuya kwamaxesha ama-4, emva kovavanyo, akufuneki kubekho iintanda ezibonakalayo kwi-sheath. umphezulu.

7. Uvavanyo lokumelana ne-Ozone

Ubude besampuli bu-20cm, kwaye ifakwe kwisitya sokumisa i-16h.Ububanzi bentonga yovavanyo esetyenziswe kuvavanyo lokugoba yi (2±0.1) amaxesha obubanzi bangaphandle bentambo.Igumbi lokuvavanya: ubushushu (40 ± 2) ℃, ukufuma okunxulumene (55 ± 5)%, ugxininiso lwe-ozone (200 ± 50) × 10-6%, Ukuhamba komoya: 0.2 ukuya ku-0.5 amaxesha umthamo wegumbi / min.Isampuli ifakwe kwibhokisi yovavanyo kwiiyure ezingama-72.Emva kovavanyo, akufuneki kubekho iintanda ezibonakalayo kwi-sheath surface.

8. Ukumelana nemozulu / uvavanyo lwe-ultraviolet

Umjikelo ngamnye: isitshizi samanzi se-18min, ukomiswa kwesibane se-xenon i-102min, ubushushu (65±3) ℃, ukufuma okunxulumene ne-65%, ubuncinci bamandla phantsi kobume be-wavelength 300～400nm: (60±2)W/m2.Emva kweeyure ezingama-720, uvavanyo lokugoba kwiqondo lokushisa legumbi lwenziwa.Ububanzi bentonga yokuvavanya yi-4 ukuya ku-5 kumaxesha angaphandle ububanzi bekhebula.Emva kovavanyo, akufuneki kubekho iintanda ezibonakalayo kwi-sheath surface.

9. Uvavanyo lokungena olunamandla

Kwiqondo lokushisa lokushisa, isantya sokusika si-1N / s, kunye nenani leemvavanyo zokusika: amaxesha ama-4.Isampulu kufuneka ihanjiswe phambili nge-25mm kwaye ijikelezwe ngama-90 ° ngaxeshanye.Rekhoda amandla okungena F ngeli xesha inaliti yensimbi yasentwasahlobo idibanisa ucingo lobhedu, kwaye ixabiso eliqhelekileyo lifunyenwe ≥150 · Dn1 / 2N (4mm2 icandelo Dn = 2.5mm)

10. Ukumelana nezibonda

Thatha amacandelo ama-3 eesampuli, icandelo ngalinye li-25mm ngaphandle, kwaye ujikeleze i-90 ° ukwenza i-total 4 dents, ubunzulu be-dent yi-0.05mm kunye ne-perpendicular kucingo lobhedu.Amacandelo amathathu iisampulu zibekwe kwibhokisi yovavanyo kwi -15 ° C, ubushushu begumbi, kunye + 85 ° C ngeeyure ezi-3, kwaye emva koko inxeba kwi-mandrel kwibhokisi yovavanyo nganye ehambelanayo.Ububanzi be mandrel yaba (3±0.3) amaxesha ubuncinci ububanzi obungaphandle kwentambo.Ubuncinci inqaku elinye kwisampulu nganye libekwe ngaphandle.Ayehli kuvavanyo lwamandla ombane wokuntywiliselwa emanzini we-AC0.3kV.

11. Uvavanyo lwe-Sheath thermal shrinkage (No. 11 kwi-GB/T2951.13-2008)

Ubude obusikiweyo besampuli yi-L1 = 300mm, ifakwe kwi-oven kwi-120 ° C ngeyure eli-1 kwaye ikhutshwe kwiqondo lokushisa ukuze ipholise.Phinda lo mjikelezo wokupholisa kunye nokufudumeza amaxesha ama-5, kwaye ekugqibeleni upholise kwiqondo lokushisa.I-shrinkage ye-thermal yesampuli iyadingeka ukuba ibe ngu-≤2%.

12. Uvavanyo lokutshisa ngokuthe nkqo

Emva kokuba ikhebula eligqityiweyo libekwe (60 ± 2) ° C kwiiyure ze-4, liphantsi kovavanyo oluvuthayo oluchazwe kwi-GB / T18380.12-2008.

13. Uvavanyo lomxholo weHalogen

PH kunye ne-conductivity
Ukubekwa kwesampula: 16h, ubushushu (21～25)℃, ukufuma (45～55)%.Iisampuli ezimbini, nganye (1000 ± 5) mg, zatyunyuzwa zaba ngamasuntswana angaphantsi kwe-0.1 mg.Ukuhamba komoya (0.0157 · D2) l·h-1±10%, umgama phakathi kwesikhephe sokutsha kunye nomda wendawo yokufudumeza esebenzayo yesithando somlilo ngu-≥300mm, iqondo lobushushu kwisikhephe sokutsha kufuneka libe ngu-≥935℃, 300m. kude nephenyane lokutsha (kwicala lokuhamba komoya ) Ubushushu kufuneka bube ≥900℃.
Igesi eveliswa yisampuli yovavanyo iqokelelwa ngebhotile yokuhlamba igesi equkethe i-450ml (ixabiso le-PH 6.5 ± 1.0; i-conductivity ≤0.5μS / mm) yamanzi adibeneyo.Ixesha lovavanyo: 30min.Iimfuno: PH≥4.3;conductivity ≤10μS/mm.