Na ua tseba hore Photovoltaic (PV) Wire ke eng?

       Mohala oa photovoltaic, eo hape e tsejoang e le PV wire, ke mohala o le mong oa conductor o sebelisetsoang ho hokahanya liphanele tsa tsamaiso ea matla a photovoltaic.

Karolo ea conductor ea thapo ea photovoltaic ke sekontiri sa koporo kapa sekontiri sa koporo se entsoeng ka tin-plated, lesela la insulation ke radiation crosslinked polyolefin insulation, 'me sheath ke radiation crosslinked polyolefin insulation.Palo e kholo ea lithapo tsa DC liteisheneng tsa motlakase oa photovoltaic li hloka ho beoa ka ntle, 'me maemo a tikoloho a thata.Lisebelisoa tsa cable li lokela ho thehoa ho anti-ultraviolet, ozone, liphetoho tse matla tsa mocheso le khoholeho ea lik'hemik'hale.E lokela ho thibela mongobo, e thibela ho pepeseha, serame, e thibelang mocheso le ho thibela mahlaseli a kotsi.Libakeng tse ling tse khethehileng, ho hlokahala lintho tsa lik'hemik'hale tse kang acid le alkali.

Litlhoko tsa Wiring Code

NEC (Khoutu ea Naha ea Motlakase ea United States) e thehile litsamaiso tsa Article 690 Solar Photovoltaic (PV) ho tataisa litsamaiso tsa matla a motlakase, li-circuits tsa sistimi ea photovoltaic, li-inverters le balaoli ba litefiso.NEC e sebelisoa hangata lits'ebetsong tse fapaneng United States (melaoana ea lehae e ka sebetsa).

The 2017 NEC Article 690 Karolo ea IV mokhoa oa ho roala mohala o lumella mekhoa e sa tšoaneng ea lithapo hore e sebelisoe mekhoeng ea photovoltaic.Bakeng sa li-conductor tse le 'ngoe, tšebeliso ea UL-certified USE-2 (monyako oa tšebeletso ea ka tlas'a lefatše) le mefuta ea terata ea PV e lumelloa sebakeng se ka ntle se pepeneneng sa potoloho ea matla a photovoltaic sebakeng sa photovoltaic.E boetse e lumella likhoele tsa PV hore li kenngoe litereneng bakeng sa li-circuits tsa kantle tsa PV le li-circuits tsa PV ntle le tlhoko ea tšebeliso e lekantsoeng.Haeba motlakase oa photovoltaic le mosebetsi oa potoloho o hlahisoang ka holimo ho li-volts tse 30 libakeng tse fumanehang, ho na le mefokolo ea sebele.Tabeng ena, ho hlokahala mofuta oa MC kapa sekontiri se loketseng se kentsoeng tseleng ea peiso.

NEC ha e lemohe mabitso a mehlala ea Canada, joalo ka likhoele tsa RWU90, RPV kapa RPVU tse se nang lisebelisoa tse peli tse netefalitsoeng tsa letsatsi tsa UL.Bakeng sa ho kenya Canada, 2012 CEC Karolo ea 64-210 e fana ka tlhahisoleseding mabapi le mefuta ea lithapo tse lumelloang bakeng sa lisebelisoa tsa photovoltaic.

Phapang pakeng tsa lithapo tsa photovoltaic le likhoele tse tloaelehileng

Melemo ea PV

Lisebelisoa tse fapaneng tse ka sebelisoang bakeng sa likhoele tse tloaelehileng ke lisebelisoa tsa boleng bo holimo tse lohiloeng tse lohiloeng joalo ka polyvinyl chloride (PVC), rabara, elastomer (TPE) le polyethylene e hokahantsoeng ka sefapano (XLPE), empa ke masoabi hore e phahameng ka ho fetisisa e lekantsoeng. mocheso bakeng sa lik'hebole tse tloaelehileng Ho phaella moo, esita le lithapo tse sirelelitsoeng tsa PVC tse nang le mocheso o lekantsoeng oa 70 ℃ hangata li sebelisoa ka ntle, empa ha li khone ho finyella litlhoko tsa mocheso o phahameng, tšireletso ea UV le ho hanyetsa serame.
Le hoja lithapo tsa photovoltaic li atisa ho pepesetsoa khanya ea letsatsi, lisebelisoa tsa matla a letsatsi li atisa ho sebelisoa libakeng tse thata, tse kang mocheso o tlaase le mahlaseli a kotsi a ultraviolet.Lapeng kapa linaheng tse ling, ha boemo ba leholimo bo le botle, mocheso o phahameng ka ho fetisisa oa tsamaiso ea letsatsi e tla ba holimo ho 100 ℃.

——Moroalo o khahlanong le mochini

Bakeng sa lithapo tsa photovoltaic, nakong ea ho kenya le ho sebelisoa, lithapo li ka tsamaisoa ka mahlakoreng a bohale a mohaho oa marulelo.Ka nako e ts'oanang, lithapo li tlameha ho mamella khatello, ho khumama, tsitsipano, meroalo e kopantsoeng le ho hanyetsa tšusumetso e matla, e phahametseng likhoele tse tloaelehileng.Haeba u sebelisa likhoele tse tloaelehileng, sheath e na le ts'ebetso e mpe ea ts'ireletso ea UV, e tla baka botsofali ba lesela le kantle la thapo, e leng se tla ama bophelo ba ts'ebeletso ea thapo, e ka lebisang ponahalong ea mathata a joalo ka cable e khuts'oane. , alamo ea mollo, le kotsi e kotsi ho basebetsi.Ka mor'a ho khantša, seaparo sa photovoltaic cable insulation se na le mocheso o phahameng le ho hanyetsa serame, ho hanyetsa oli, acid le alkali salt resistance, ts'ireletso ea UV, lelakabe la mollo, le tšireletso ea tikoloho.Lithapo tsa motlakase tsa photovoltaic li sebelisoa haholo-holo libakeng tse thata tse nang le bophelo ba tšebeletso ea lilemo tse fetang 25.

Ts'ebetso e ka Sehloohong

1. DC khanyetso

Khanyetso ea DC ea mokokotlo oa conductive oa thapo e phethiloeng ho 20 ℃ ha e fete 5.09Ω/km.

2. Teko ea motlakase oa ho qoelisoa metsing

Mohala o feliloeng (20m) o ke ke oa senyeha ka mor'a ho qoelisoa (20±5) ℃ metsing bakeng sa 1h ka mor'a tlhahlobo ea motlakase ea metsotso e 5 (AC 6.5kV kapa DC 15kV).

3. Nako e telele ea ho hanyetsa motlakase oa DC

Mohlala oa bolelele ke 5m, eketsa (85±2)℃ metsi a qhibilihisitsoeng a nang le 3% NaCl (240±2)h,' me u arole bokaholimo ba metsi ka 30cm.Kenya motlakase oa DC 0.9kV pakeng tsa konokono le metsi (coconductive core e hokahane, 'me metsi a hokahantsoe le Nick).Ka mor'a ho ntša lakane, etsa tlhahlobo ea motlakase oa ho qoelisoa ka metsi.Matla a ho lekoa ke AC 1kV, 'me ha ho hlokahale ho senyeha.

4. Insulation resistance

Ho hanyetsa ha thapo e phethiloeng ho 20 ℃ ha ho ka tlase ho 1014Ω·cm,
Ho hanyetsa ha thapo e phethiloeng ho 90 ℃ ha ho tlase ho 1011Ω · cm.

5. Ho hanyetsa sefahleho sa sheath

Ho hanyetsa bokaholimo ba sheath ea cable e phethiloeng ha ea lokela ho ba tlase ho 109Ω.

Teko ea Ts'ebetso

1. Teko ea khatello e phahameng ea mocheso (GB/T2951.31-2008)

Mocheso (140 ± 3) ℃, nako 240min, k = 0.6, botebo ba indentation ha bo fete 50% ea kakaretso ea botenya ba ho pata le sheath.'Me u etse tlhahlobo ea AC6.5kV, 5min voltage voltage, ha ho na ho senyeha ho hlokahalang.

2. Teko ea mocheso o mongobo

Mohlala o behiloe tikolohong e nang le mocheso oa 90℃ le mongobo o lekanyelitsoeng oa 85% bakeng sa 1000h.Ka mor'a ho pholile ho ea mocheso oa kamore, tekanyo ea phetoho ea matla a matla ke ≤-30% 'me tekanyo ea phetoho ea elongation nakong ea khefu ke ≤-30% ha e bapisoa le pele ho teko.

3. Acid le alkali resistance test (GB/T2951.21-2008)

Lihlopha tse peli tsa lisampole li ile tsa qoelisoa ka tharollo ea oxalic acid e nang le motsoako oa 45g / L le tharollo ea sodium hydroxide e nang le motsoako oa 40g / L, mocheso oa 23 ° C bakeng sa 168h.Ha ho bapisoa le tharollo pele ho qoelisoa, sekhahla sa phetoho ea matla a tsitsipano e ne e le ≤± 30%, elongation nakong ea khefu ≥100%.

4. Teko ea ho lumellana

Ka mor'a hore mohala oohle o tsofetse bakeng sa 7 × 24h ho (135 ± 2) ℃, lebelo la phetoho ea matla a ho tsitsa pele le ka mor'a botsofali ba ho pata ke ≤± 30%, sekhahla sa phetoho ea elongation nakong ea khefu ke ≤± 30%;tekanyo ea phetoho ea matla a ho tsitsa pele le ka mor'a hore sheath e tsofale ke ≤ -30%, phetoho ea tekanyo ea nako e telele nakong ea khefu ≤± 30%.

5. Teko ea tšusumetso e tlase ea mocheso (8.5 ho GB/T2951.14-2008)

Mocheso o pholileng -40 ℃, nako ea 16h, boima ba lerotholi ke 1000g, boima ba block block 200g, bophahamo ba lerotholi 100mm, ha hoa lokela ho ba le mapetsong a bonahalang holim'a metsi.

6. Teko e tlaase ea mocheso o tlaase (8.2 ho GB/T2951.14-2008)

Mocheso o batang (-40 ± 2) ℃, nako ea 16h, bophara ba molamu oa teko ke makhetlo a 4 ho isa ho a 5 bophara ba ka ntle ba thapo, o phunyeletsa makhetlo a 3 ho isa ho a 4, ka mor'a tlhahlobo, ha hoa lokela ho ba le mapetsong a bonahalang holim'a sheath. bokahodimo.

7. Teko ea ho hanyetsa Ozone

Bolelele ba sampuli ke 20cm, 'me e kenngoa ka sejana se omisang bakeng sa 16h.Bophara ba molamu oa teko o sebelisitsoeng tekong ea ho kobeha ke (2±0.1) makhetlo a bophara ba ka ntle ba thapo.Kamore ea teko: mocheso (40 ± 2) ℃, mongobo o lekanyelitsoeng (55 ± 5)%, mahloriso a ozone (200 ± 50) × 10-6%, Phallo ea moea: 0.2 ho 0.5 linako tse ling tsa kamore / min.Mohlala o kenngoa ka lebokoseng la tlhahlobo bakeng sa lihora tse 72.Ka mor'a tlhahlobo, ha hoa lokela ho ba le mapetsong a bonahalang holim'a sheath.

8. Ho hanyetsa boemo ba leholimo / teko ea ultraviolet

Potoloho e 'ngoe le e' ngoe: ho fafatsa metsi bakeng sa 18min, ho omisa lebone la xenon bakeng sa 102min, mocheso (65±3) ℃, mongobo o lekanyelitsoeng 65%, matla a fokolang tlas'a boemo ba wavelength 300～400nm: (60±2)W/m2.Kamora lihora tse 720, ho ile ha etsoa tlhahlobo ea ho kobeha mocheso oa kamore.Bophara ba molamu oa teko ke makhetlo a 4 ho isa ho a 5 bophara ba ka ntle ba mohala.Ka mor'a tlhahlobo, ha hoa lokela ho ba le mapetsong a bonahalang holim'a sheath.

9. Teko ea ho kenella ka matla

Ka mocheso oa kamore, lebelo la ho itšeha ke 1N / s, le palo ea liteko tsa ho itšeha: makhetlo a 4.Mohlala o tlameha ho tsamaisoa pele ka 25mm le ho potoloha 90° ho ea ka nako le nako.Rekota matla a ho kenella F nakong eo nale ea tšepe ea selemo e kopanang le terata ea koporo, 'me boleng bo tloaelehileng bo fumanoang ke ≥150·Dn1/2N (4mm2 karolo Dn = 2.5mm)

10. E hanyetsanang le meno

Nka likarolo tse 3 tsa lisampole, karolo e 'ngoe le e' ngoe e arohane ka 25mm, 'me u potoloha 90 ° ho etsa kakaretso ea 4 ea meno, botebo ba meno ke 0.05mm le perpendicular ho terata ea koporo.Likarolo tse tharo tsa disampole li ile tsa behoa ka lebokoseng la liteko ho -15 ° C, mocheso oa kamore, le +85 ° C bakeng sa lihora tse 3, ebe o lematsoa holim'a mandrel lebokoseng le leng le le leng la teko le lumellanang.Bophara ba mandrel e ne e le (3±0.3) makhetlo a bonyane bophara ba ka ntle ba thapo.Bonyane lintlha tse le 'ngoe tsa sampole ka 'ngoe li fumaneha ka ntle.Ha e robehe tekong ea AC0.3kV ea ho qoelisoa ha metsi.

11. Sheath thermal shrinkage test (No. 11 ho GB/T2951.13-2008)

Bolelele bo sehiloeng ba sampole ke L1 = 300mm, e behoa ka ontong ea 120 ° C bakeng sa hora e le 'ngoe ebe e isoa mocheso oa kamore bakeng sa ho pholile.Pheta potoloho ena ea ho futhumatsa le ho futhumatsa makhetlo a 5, 'me qetellong u pholile mocheso oa kamore.Ho fokotseha ha mocheso oa sampuli ho hlokahala hore e be ≤2%.

12. Paatse tukang teko

Ka mor'a hore mohala o feliloeng o behoe ho (60±2) ° C bakeng sa lihora tsa 4, o tlas'a teko ea ho chesa e otlolohileng e boletsoeng ho GB/T18380.12-2008.

13. Teko ea litaba tsa Halogen

PH le conductivity
Mohlala oa ho beha: 16h, mocheso (21～25)℃, mongobo (45～55)%.Mehlala e 'meli, e' ngoe le e 'ngoe (1000 ± 5) mg, e ile ea siloa ho ba likaroloana tse ka tlaase ho 0.1 mg.Phallo ea moea (0.0157 · D2) l·h-1 ± 10%, sebaka se pakeng tsa sekepe se tukang le moeli oa sebaka se sebetsang sa ho futhumatsa sebōpi ke ≥300mm, mocheso sekepeng sa mollo o tlameha ho ba ≥935℃, 300m. hole le seketsoana sa mollo (ka tataiso ea phallo ea moea ) Mocheso o tlameha ho ba ≥900℃.
Khase e hlahisoang ke mohlala oa teko e bokelloa ka botlolo ea ho hlatsoa khase e nang le 450ml (PH ea bohlokoa 6.5 ± 1.0; conductivity ≤0.5μS / mm) ea metsi a silafetseng.Nako ea teko: 30min.Litlhoko: PH≥4.3;conductivity ≤10μS/mm.