Tsamaisong ea matla a letsatsi, li-inverters tse nyane tsa PV li bapala karolo ea bohlokoa ho fetoleng motlakase o otlolohileng (DC) o hlahisoang ke liphanele tsa letsatsi hore e be alternating current (AC) e ka sebelisoang malapeng le likhoebong. Le ha li-inverters tse nyane tsa PV li fana ka melemo e joalo ka poelo e matlafalitsoeng ea matla le ho feto-fetoha ha maemo, ho bohlokoa ho khetha likhoele tse nepahetseng bakeng sa ho netefatsa polokeho le ts'ebetso e nepahetseng ea sistimi. Tataisong ena, re tla u tsamaisa ka lintlha tse lokelang ho nahanoa ha u khetha tharollo e nepahetseng bakeng sa likhokahano tsa li-inverter tse nyane tsa PV, ho u thusa ho etsa liqeto tse nang le tsebo bakeng sa seta ea hau ea letsatsi.
Ho utloisisa li-inverters tsa Micro PV le likhokahano tsa tsona
Li-inverter tsa Micro PV li fapane le li-inverter tsa likhoele tsa setso ka hore microinverter e 'ngoe le e' ngoe e pentiloe ka karolo e le 'ngoe ea letsatsi. Setupo sena se lumella phanele e 'ngoe le e' ngoe ho sebetsa ka boikemelo, ho ntlafatsa tlhahiso ea matla le haeba phanele e le 'ngoe e le moriti kapa e sa sebetse hantle.
Mehala ea khokahano lipakeng tsa liphanele tsa letsatsi le li-microinverter li bohlokoa molemong oa ts'ebetso le polokeho ea sistimi. Mehala ena e tsamaisa matla a DC ho tloha liphanele ho ea ho li-microinverters, moo a fetoloang hore e be AC bakeng sa tšebeliso ea marang-rang a motlakase kapa tšebeliso ea lapeng. Ho khetha mohala o nepahetseng ho bohlokoa ho sebetsana le phetiso ea matla, ho sireletsa sistimi khatellong ea tikoloho, le ho boloka litekanyetso tsa polokeho.
Lintlha tsa Bohlokoa Tseo U Lokelang ho li Nahana Ha U Khetha Mehala ea Khokelo
Ha u khetha lithapo tsa khokahano bakeng sa li-inverters tse nyane tsa PV, lintlha tse 'maloa tsa bohlokoa li tlameha ho nahanoa ho netefatsa ts'ebetso le polokeho.
1. Mofuta oa Cable le Insulation
Bakeng sa li-inverter tse nyane tsa PV, ho bohlokoa ho sebelisa likhoele tse lekantsoeng ke letsatsi joalo kaH1Z2Z2-K or PV1-F, tse etselitsoeng ka ho khetheha bakeng sa lisebelisoa tsa photovoltaic (PV). Lithapo tsena li na le litšireletso tsa boleng bo holimo tse sireletsang mahlaseling a kotsi a UV, mongobo le maemo a thata a tikoloho. Insulation e lokela ho tšoarella ka ho lekaneng ho sebetsana le maemo a thata a ho pepeseha ka ntle le ho thibela ho senyeha ha nako e ntse e feta.
2. Litekanyetso tsa hona joale le tsa Voltage
Mehala ea ho hokahanya e khethiloeng e tlameha ho khona ho sebetsana le hona joale le motlakase o hlahisoang ke lisebelisoa tsa letsatsi. Ho khetha lithapo tse nang le litekanyetso tse nepahetseng ho thibela mathata a kang mocheso o feteletseng kapa ho theoha ho feteletseng ha motlakase, tse ka senyang tsamaiso le ho fokotsa ts'ebetso ea eona. Mohlala, etsa bonnete ba hore lintlha tsa motlakase oa thapo li lumellana kapa li feta boholo ba motlakase oa sistimi ho qoba ho senyeha ha motlakase.
3. UV le Boemo ba Boemo ba Leholimo
Kaha lisebelisoa tsa letsatsi li atisa ho kenngoa ka ntle, UV le ho hanyetsa boemo ba leholimo ke lintlha tsa bohlokoa. Lithapo tsa khokahanyo li tlameha ho mamella khanya ea nako e telele ea khanya ea letsatsi, pula, lehloa le mocheso o feteletseng ntle le ho senya botšepehi ba tsona. Lithapo tsa boleng bo holimo li tla le lijase tse thibelang mahlaseli a kotsi a UV ho sireletsa likhoele litlamorao tse senyang tsa letsatsi.
4. Mamello ea Mocheso
Lisebelisoa tsa matla a letsatsi li na le mocheso o fapaneng letsatsi lohle le ho pholletsa le linako tsa selemo. Lithapo li lokela ho sebetsa ka katleho lithempereichara tse phahameng le tse tlase ntle le ho lahleheloa ke maemo kapa ho ba brittle. Sheba lithapo tse nang le mefuta e mengata ea mocheso oa ts'ebetso ho netefatsa ho ts'epahala ha maemo a leholimo a feteletseng.
Litekanyetso tsa Siling ea Cable le Bolelele
Sekhahla se nepahetseng sa cable se bohlokoa bakeng sa ho fokotsa tahlehelo ea matla le ho netefatsa hore sistimi e sebetsa hantle. Lithapo tse tlase haholo li ka lebisa tahlehelong e feteletseng ea matla ka lebaka la ho hanyetsa, ho baka ho theoha ha motlakase ho fokotsang ts'ebetso ea sistimi ea hau ea microinverter. Ho phaella moo, lithapo tse nyenyane li ka chesa haholo, tsa baka kotsi ea tšireletso.
1. Ho fokotsa Voltage Drop
Ha u khetha boholo bo loketseng ba cable, u lokela ho nahana ka bolelele ba kakaretso ea mohala oa khokahanyo. Lithapo tse telele tsa li-cable li eketsa monyetla oa ho theoha ha motlakase, e leng se ka fokotsang katleho ea sistimi ea hau kaofela. Ho loantša sena, ho ka 'na ha hlokahala hore u sebelise likhoele tse kholoanyane tsa bophara bakeng sa ho matha nako e telele ho etsa bonnete ba hore motlakase o tlisoang ho li-microinverters o lula ka har'a sebaka se amohelehang.
2. Ho Qoba ho Futhumatsa ho Feta
Ho sebelisa boholo bo nepahetseng ba cable ho boetse ho bohlokoa bakeng sa ho thibela mocheso o feteletseng. Lithapo tse nyane haholo bakeng sa motlakase oo li li jereng li tla futhumala le ho senyeha ha nako e ntse e ea, e leng se ka bakang tšenyo ea ho kenya letsoho kapa esita le mollo. Kamehla sheba litataiso tsa moetsi le litekanyetso tsa indasteri ho khetha boholo bo nepahetseng ba thapo bakeng sa sistimi ea hau.
Kgetho ya Lebokose la Sehokedi le Junction
Lihokelo le mabokose a mateano li bapala karolo ea bohlokoa ho boloka ho ts'epahala ha likhokahano lipakeng tsa liphanele tsa letsatsi le li-microinverter.
1. Ho Khetha Lihokelo tse Tšepahalang
Lihokelo tsa boleng bo holimo, tse thibelang boemo ba leholimo li bohlokoa bakeng sa ho netefatsa likhokahano tse sireletsehileng lipakeng tsa likhoele. Ha u khetha lihokelo, sheba mefuta e netefalitsoeng bakeng sa lits'ebetso tsa PV mme u fane ka tiiso e thata, e sa keneleng metsi. Lihokelo tsena li lokela ho ba bonolo ho li kenya le ho tšoarella ka ho lekana ho mamella ho pepesehela maemo a kantle.
2. Mabokose a Junction bakeng sa Tšireletso
Mabokose a marang-rang a boloka likhokahano lipakeng tsa likhoele tse ngata, ho li sireletsa khahlanong le tšenyo ea tikoloho le ho nolofatsa tlhokomelo. Khetha mabokose a mateano a hananang le kutu 'me a etselitsoe ho sebelisoa kantle ho netefatsa tšireletso ea nako e telele ea likhoele tsa hau.
Ho lumellana le Maemo a Indasteri le Litifikeiti
Ho etsa bonnete ba hore sistimi ea hau ea micro PV inverter e bolokehile ebile e ka tšeptjoa, likarolo tsohle, ho kenyeletsoa lithapo tsa khokahano, li lokela ho latela litekanyetso le litifikeiti tsa indasteri tse tsebahalang.
1. Melao ea Machaba
Litekanyetso tsa machaba tse kangIEC 62930(bakeng sa lithapo tsa letsatsi) leUL 4703(bakeng sa terata ea photovoltaic naheng ea US) fana ka litataiso bakeng sa polokeho le ts'ebetso ea likhokahano tsa letsatsi. Ho lumellana le litekanyetso tsena ho tiisa hore likhoele li finyella litlhoko tse fokolang tsa ho kenya letsoho, ho mamella mocheso le ts'ebetso ea motlakase.
2. Melao ea Libaka
Ntle le maemo a machabeng, ho bohlokoa ho latela melaoana ea lehae, joalo kaKhoutu ea Naha ea Motlakase (NEC)United States. Hangata melaoana ena e laela litlhoko tse khethehileng tsa ho kenya, joalo ka ho theola fatše, ho etsa li-conductor size, le cable routing, tse hlokahalang bakeng sa ts'ebetso e sireletsehileng ea sistimi.
Ho khetha likhoele tse netefalitsoeng le likaroloana ha ho netefatse ts'ireletseho ea sistimi feela empa hape ho ka hlokahala molemong oa inshorense kapa ho tšoaneleha bakeng sa litheolelo le likhothaletso.
Mekhoa e Molemo ka ho Fetisisa ea ho Kenya le Tlhokomelo
Ho holisa polokeho le ts'ebetso ea sistimi ea hau ea micro PV inverter, latela mekhoa ena e metle ea ho kenya le ho boloka likhoele tsa khokahano.
1. Mokhoa o nepahetseng oa ho tsamaisa le ho sireletsa
Kenya lithapo ka tsela e li sireletsang hore li se ke tsa senyeha 'meleng, tse kang ho sebelisa conduit kapa literei tsa cable ho thibela ho pepesehela mathōkong kapa libakeng tse nang le sephethephethe se phahameng. Lithapo le tsona li lokela ho tlanngoe ka mokhoa o sireletsehileng ho thibela ho sisinyeha ka lebaka la ho fetoha ha moea kapa mocheso.
2. Litlhahlobo Tsa Kamehla
Kamehla hlahloba lithapo tsa khokahanyo ea hau bakeng sa matšoao a ho senyeha, joalo ka ho petsoha, ho bola, kapa lihokelo tse hlephileng. Rarolla mathata afe kapa afe ka potlako ho a thibela hore a se ke a eketseha ho ba mathata a maholo.
3. Ts'ebetso ea Tsamaiso ea Ts'ebetso
Ho beha leihlo ts'ebetso ea sistimi ho ka u thusa ho tseba litaba ka lithapo pele li teba. Marotholi a sa hlaloseheng a tlhahiso ea matla e ka ba letšoao la lithapo tse senyehileng kapa tse senyehang tse hlokang ho nkeloa sebaka.
Liphoso Tse Tloaelehileng Tseo U Lokelang ho li Qoba
Leha ho na le sepheo se setle, liphoso li ka etsahala nakong ea ho kenya kapa ho lokisoa ha likhoele tsa khokahano ea li-inverter tse nyane tsa PV. Mona ke tse ling tsa liphoso tse tloaelehileng tseo u lokelang ho li qoba:
- Ho Sebelisa Lithapo Tse Lefshoang ka Tsela e Fosahetseng: Ho khetha lithapo tse nang le lintlha tse sa tsamaellaneng le motlakase oa sistimi le hona joale ho ka lebisa ho futhumatseng ho feteletseng kapa ho hloleha ha motlakase.
- Ho Tlosa Tlhokomelo e Tloaelehileng: Ho hloleha ho hlahloba le ho boloka likhoele tsa likhokahano khafetsa ho ka baka tšenyo e behang sistimi eohle kotsing.
- Ho sebelisa likarolo tse sa netefatsoang: Ho sebelisa likhokahanyo tse sa netefatsoang kapa tse sa lumellaneng le likhoele le likhoele ho eketsa kotsi ea ho hloleha mme ho ka hlakola liwaranti kapa tšireletso ea inshorense.
Qetello
Ho khetha lithapo tse nepahetseng tsa khokahano bakeng sa sistimi ea hau ea micro PV inverter ho bohlokoa bakeng sa ho netefatsa polokeho, ts'ebetso le ts'ebetso ea nako e telele. Ka ho khetha likhoele tse nang le insulation e nepahetseng, litekanyetso tsa hajoale, le ho hanyetsa tikoloho, le ka ho latela litekanyetso tsa indasteri, o ka ntlafatsa sistimi ea hau ea letsatsi bakeng sa lilemo tsa ts'ebetso e tšepahalang. Hopola ho latela mekhoa e metle ea ho kenya le ho lokisa, 'me u buisane le setsebi haeba u sa kholisehe ka karolo efe kapa efe ea sistimi.
Qetellong, ho tsetela mehala ea likhokahano tsa boleng bo holimo, tse netefalitsoeng ke litšenyehelo tse nyane ha li bapisoa le melemo ea ts'ireletso e eketsehileng ea sistimi, ts'ebetso le ho tšoarella.
Danyang Winpower Wire & Cable Mfg Co., Ltd.E thehiloe ka 2009 mme ke khoebo e etelletseng pele e inehetseng ho nts'etsopele ea litsebi, tlhahiso le thekiso ea likhoele tsa letsatsi tsa photovoltaic. Lithapo tsa lehlakore tsa photovoltaic DC tse ntlafalitsoeng le tse entsoeng ke k'hamphani li fumane mangolo a mangolo a mabeli a tsoang ho TÜV ea Jeremane le American UL. Ka mor'a lilemo tse ngata tsa ho itloaetsa tlhahiso, k'hamphani e bokelletse phihlelo e ngata ea tekheniki ho wiring ea letsatsi ea photovoltaic mme e fa bareki lihlahisoa le litšebeletso tsa boleng bo phahameng.
TÜV e netefalitsoeng ea PV1-F photovoltaic DC litlhaloso
Mokhanni | Sesebelisoa sa motlakase | Ho roala | Litšobotsi tsa motlakase | ||||
Cross section mm² | Wire bophara | Diameter | Insulation bonyane botenya | Insulation bophara bophara | Coating bonyane botenya | E felile bophara ba kantle | Conductor resistance 20℃ Ohm/km |
1.5 | 30/0.254 | 1.61 | 0.60 | 3.0 | 0.66 | 4.6 | 13.7 |
2.5 | 50/0.254 | 2.07 | 0.60 | 3.6 | 0.66 | 5.2 | 8.21 |
4.0 | 57/0.30 | 2.62 | 0.61 | 4.05 | 0.66 | 5.6 | 5.09 |
6.0 | 84/0.30 | 3.50 | 0.62 | 4.8 | 0.66 | 6.4 | 3.39 |
10 | 84/0.39 | 4.60 | 0.65 | 6.2 | 0.66 | 7.8 | 1.95 |
16 | 133/0.39 | 5.80 | 0.80 | 7.6 | 0.68 | 9.2 | 1.24 |
25 | 210/0.39 | 7.30 | 0.92 | 9.5 | 0.70 | 11.5 | 0.795 |
35 | 294/0.39 | 8.70 | 1.0 | 11.0 | 0.75 | 13.0 | 0.565 |
UL certified PV photovoltaic DC line specifications
Mokhanni | Sesebelisoa sa motlakase | Ho roala | Litšobotsi tsa motlakase | ||||
AWG | Wire bophara | Diameter | Insulation bonyane botenya | Insulation bophara bophara | Coating bonyane botenya | E felile bophara ba kantle | Conductor resistance 20℃ Ohm/km |
18 | 16/0.254 | 1.18 | 1.52 | 4.3 | 0.76 | 4.6 | 23.2 |
16 | 26/0.254 | 1.5 | 1.52 | 4.6 | 0.76 | 5.2 | 14.6 |
14 | 41/0.254 | 1.88 | 1.52 | 5.0 | 0.76 | 6.6 | 8.96 |
12 | 65/0.254 | 2.36 | 1.52 | 5.45 | 0.76 | 7.1 | 5.64 |
10 | 105/0.254 | 3.0 | 1.52 | 6.1 | 0.76 | 7.7 | 3.546 |
8 | 168/0.254 | 4.2 | 1.78 | 7.8 | 0.76 | 9.5 | 2.813 |
6 | 266/0.254 | 5.4 | 1.78 | 8.8 | 0.76 | 10.5 | 2.23 |
4 | 420/0.254 | 6.6 | 1.78 | 10.4 | 0.76 | 12.0 | 1.768 |
2 | 665/0.254 | 8.3 | 1.78 | 12.0 | 0.76 | 14.0 | 1.403 |
1 | 836/0.254 | 9.4 | 2.28 | 14.0 | 0.76 | 16.2 | 1.113 |
1/00 | 1045/0.254 | 10.5 | 2.28 | 15.2 | 0.76 | 17.5 | 0.882 |
2/00 | 1330/0.254 | 11.9 | 2.28 | 16.5 | 0.76 | 19.5 | 0.6996 |
3/00 | 1672/0.254 | 13.3 | 2.28 | 18.0 | 0.76 | 21.0 | 0.5548 |
4/00 | 2109/0.254 | 14.9 | 2.28 | 19.5 | 0.76 | 23.0 | 0.4398 |
Ho khetha mohala o loketseng oa khokahanyo ea DC ke oa bohlokoa bakeng sa ts'ebetso e bolokehileng le e sebetsang ea sistimi ea photovoltaic. Danyang Winpower Wire & Cable e fana ka tharollo e feletseng ea photovoltaic wiring ho fana ka tiiso ea ts'ebetso e sebetsang hantle le e tsitsitseng bakeng sa tsamaiso ea hau ea photovoltaic. A re sebetseng 'moho ho fihlela nts'etsopele e tsitsitseng ea matla a tsosolositsoeng le ho kenya letsoho molemong oa ho sireletsa tikoloho e tala! Ka kopo ikutloe u lokolohile ho ikopanya le rona, re tla u sebeletsa ka pelo eohle!
Nako ea poso: Oct-15-2024