2023-04-10
Canjin keɓancewa shine babban kayan wutan lantarki, galibi ana amfani dashi a cikin da'irori masu ƙarfi.Na'urar sauya sheka ce ba tare da na'urar kashe baka ba, galibi ana amfani da ita don cire haɗin da'irar ba tare da ɗaukar nauyi ba, keɓe wutar lantarki, kuma tana da madaidaicin wurin cire haɗin gwiwa a cikin buɗaɗɗen jihar don tabbatar da amintaccen dubawa da gyara wasu kayan lantarki.Yana iya dogara da wuce matsakaicin nauyi na yau da kullun da kuskuren gajeren kewayawa a cikin rufaffiyar jihar.Saboda ba shi da na'urar kashe baka ta musamman, ba zai iya yanke nauyin halin yanzu da gajeriyar kewayawa ba.Don haka, keɓancewar keɓancewar za a iya aiki da shi ne kawai lokacin da na'urar keɓancewa ta cire haɗin kewaye.An haramta shi sosai don yin aiki tare da kaya don guje wa manyan kayan aiki da haɗari na sirri.Canjin wutar lantarki kawai, masu kama walƙiya, na'urori masu ɗaukar nauyi tare da tashin hankali a halin yanzu ƙasa da 2A, da da'irori marasa ɗaukar nauyi tare da na yanzu waɗanda ba su wuce 5A ba za a iya sarrafa su kai tsaye tare da maɓallan keɓewa.A aikace-aikacen wutar lantarki, ana amfani da na'urori masu watsewa da na'urorin keɓewa galibi a hade, da kumamagudanar ruwaAna amfani da su don canzawa da yanke kaya (laibi) na halin yanzu, kuma maɓalli na keɓancewa yana samar da madaidaicin cire haɗin.
Thesolar panel dc isolator switchna'urar aminci ce ta wutar lantarki wacce za ta iya cire haɗin kanta da hannu daga samfuran a cikin tsarin hasken rana.A cikin aikace-aikacen hotovoltaic, ana amfani da masu keɓancewa na PV DC don cire haɗin hasken rana da hannu don kulawa, shigarwa ko gyarawa.A cikin shigarwa, kiyayewa na yau da kullun da yanayin gaggawa, kwamitin yana buƙatar ware shi daga gefen AC, don haka ana sanya canjin keɓancewa da hannu tsakanin kwamitin da shigar da inverter.Ana kiran irin wannan nau'in sauyawa na PV DC keɓancewa saboda yana samar da keɓewar DC tsakanin panel na photovoltaic da sauran tsarin.Wannan canjin aminci ne wanda ba makawa ba ne, wanda ya zama tilas a cikin kowane tsarin samar da wutar lantarki bisa ga IEC 60364-7-712.Solar panel dc isolator switch yana ɗaya daga cikin mahimman abubuwan da ke tattare da amincin tsarin photovoltaic.Amincewarsa da kwanciyar hankali suna da alaƙa da ƙarfin samar da wutar lantarki da riba mai amfani da tsarin photovoltaic, da kuma aiki mai aminci da aminci na tsarin photovoltaic.Tare da karuwa a cikin shigarwa na photovoltaic, samar da wutar lantarki ya jawo hankali sosai.Duk da haka, masu zuba jarurruka na lantarki suna ƙara damuwa game da al'amurran tsaro, wanda ya faru akai-akai a cikin shuke-shuken wutar lantarki a cikin 'yan shekarun nan.
Ƙasashen Turai irin su Jamus da Netherlands suna buƙatar masana'antun inverter don saita ginanniyar PV DC masu keɓantawa, yayin da ƙasashe irin su Burtaniya, Indiya, da Ostiraliya na buƙatar tsarin ɗaukar hoto dole ne ya shigar da keɓancewar PV DC na waje.Tare da fayyace manufofin daukar hoto na kasar Sin, yawan na'urorin na'urar daukar hoto ya karu a kowace shekara, musamman na tsarin da ake rarraba wutar lantarki, kuma tsarin rufin rufin ya kara samun karbuwa.
Koyaya, abin da ake kira photovoltaic DC isolator switch akan kasuwa shineAC isolator canzako sigar wayoyi da aka gyaggyara, ba maɓalli na keɓancewa na DC tare da ainihin kashe baka da ayyuka na yanke wuta.Waɗannan na'urorin keɓancewa na AC ba su da ƙarancin kashe baka da keɓewar wutar lantarki daga kaya, wanda zai iya haifar da zafi cikin sauƙi, ɗigogi da tartsatsi, har ma da ƙone dukkan tashar wutar lantarki ta hotovoltaic.
Don haka, yana da matukar mahimmanci a zaɓi ƙwararrun madaidaicin hasken rana dc isolator switch.BS 7671 ya nuna cewa dole ne a samar da hanyar keɓewa a gefen DC na shigarwar hoto, wanda za'a iya ba da shi ta hanyar keɓancewa wanda aka keɓance a cikin EN 60947-3.
Don haka, ta yaya za a zaɓi maɓallin keɓantawar PV DC mai dacewa don tsarin photovoltaic?
Ƙididdigar wutar lantarki mai aiki na maɓallin keɓantawar DC yakamata ya zama daidai ko girma fiye da buƙatun tsarin.Na kowa sun hadu da UL508i 600V, IEC60947-3 1000V da 1500V.Yawanci wutar lantarkin tsarin da aka haɗa da inverter guda ɗaya ya kai 600V, kuma na'urar inverter mai lamba uku ko tsakiya tana da girma kamar 1000V ko 1500V.
2 Sanda - igiya guda ɗaya, sandar sanda 4 - igiya biyu.
Don ginanniyar maɓallin keɓancewar DC, adadin MPPT na inverter yana ƙayyade sandar mai keɓewar DC.Masu inverter na yau da kullun suna da MPPT guda ɗaya, MPPT dual, da ƙaramin adadin MPPT sau uku.Gabaɗaya magana, inverters tare da ƙimar ƙarfin 1kW～3kW suna ɗaukar ƙirar MPPT guda ɗaya;Inverters tare da ƙimar ƙarfin 3kW～30kW sun ɗauki MPPT dual ko ƙaramin adadin MPPT guda uku.
Don sauyawar keɓancewar DC na waje, zaku iya zaɓar sanduna 4, sanduna 6, sanduna 8 don saiti masu yawa na bangarori na hasken rana ko sanduna 2 don saitin bangarorin hasken rana bisa ga ƙirar tsarin daban-daban.
Ya kamata a zaɓi maɓallin keɓancewar PV DC bisa ga matsakaicin ƙarfin lantarki da halin yanzu na igiyoyin panel.Idan mai amfani ya san ma'auni na masu inverters na hoto, musamman masana'antun inverter, don adana farashi yadda ya kamata, za su iya zaɓar bisa ga shigarwar wutar lantarki na DC da na yanzu don tabbatar da cewa za a iya amfani da su a duk yanayin yanayi da yanayin zafi.
BS 7671 ya ƙayyade cewa keɓance masu sauyawa masu dacewa da EN 60947-3 sun dace da tsarin photovoltaic.Ƙimar da aka ƙididdige madaidaicin madaidaicin madaidaicin dole ne yayi la'akari da matsakaicin ƙarfin lantarki da halin yanzu na kirtani na photovoltaic don ware, sannan daidaita waɗannan sigogi bisa ga ma'aunin aminci da aka ƙayyade ta daidaitattun yanzu.Wannan yakamata ya zama ƙaramin ƙima da ake buƙata don sauya mai keɓancewa.
Ya kamata a ƙayyade yanayin yanayin aiki, matakin kariya da matakin kariyar wuta bisa ga yanayin.Gabaɗaya ana iya amfani da maɓalli mai kyau na PV DC mai keɓancewa cikin aminci a yanayin zafi na -40°C zuwa 60°C.Gabaɗaya, matakin kariya na keɓaɓɓen keɓancewar DC na waje yakamata ya isa IP65;da ginannen DC isolator sauya kamata tabbatar da cewa kayan aiki kai IP65.Ƙimar wuta na akwatin gidaje ko babban jiki zai bi UL 94V-0, kuma abin rike zai bi UL 94V-2.
Masu amfani za su iya zaɓar yanayin da ya dace daidai da ainihin buƙatun.Gabaɗaya, akwai shigarwa na panel, shigarwa na tushe da shigarwa guda-rami.
Dongguan Slocable Photovoltaic Technology Co.,LTD.
Ƙara: Guangda Manufacturing Hongmei Science and Technology Park, No. 9-2, Hongmei Section, Wangsha Road, Hongmei Town, Dongguan, Guangdong, China
Saukewa: 0769-220101
