2023-04-10
Ukutshintsha kwe-Isolator yi-switchgear ephezulu ye-voltage, esetyenziswa kakhulu kwiisekethe eziphezulu ze-voltage.Yinto yokucima i-arc ngaphandle kwesixhobo sokucima i-arc, esisetyenziselwa ukuqhawula isiphaluka ngaphandle komthwalo wangoku, ukwahlula ukunikezelwa kwamandla, kwaye ibe nendawo ecacileyo yokuqhawula kwindawo evulekileyo ukuze kuqinisekiswe ukuhlolwa okukhuselekileyo kunye nokulungiswa kwezinye izixhobo zombane.Iyakwazi ukudlula ngokuthembekileyo umthwalo oqhelekileyo wangoku kunye nephutha lesiphaluka esifutshane kwimeko evaliweyo.Ngenxa yokuba ayinaso isixhobo esikhethekileyo sokucima i-arc, ayikwazi ukunqumla umthwalo wangoku kunye nombane omfutshane.Ngoko ke, ukutshintshwa kwe-isolation kungenziwa kuphela xa isiphaluka sinqanyuliwe ngu-breaker circuit.Kuvinjelwe ngokungqongqo ukusebenza ngomthwalo ukuphepha izixhobo ezinzulu kunye neengozi zomntu.Kuphela i-voltage transformers, izithinteli zombane, iziguquli ezingenamthwalo kunye ne-excitation current engaphantsi kwe-2A, kunye neesekethe ezingenayo imithwalo yangoku engekho ngaphezu kwe-5A inokusebenza ngokuthe ngqo kunye nokutshintshwa kokuzimela.Kwizicelo zamandla ombane, ii-breakers zesekethe kunye neeswitshi zokuzihlukanisa zisetyenziswa kakhulu ngokudibeneyo, kunye neabaphuli beesekethezisetyenziselwa ukutshintsha kunye nokusika umthwalo (impazamo) yangoku, kwaye i-isolator switch yenza indawo ecacileyo yokuqhawula.
IIpaneli yelanga ye-dc iswitshi yokuhlukanisasisixhobo sokhuseleko sombane esinokuzikhupha ngokwaso kwiimodyuli kwi-solar photovoltaic system.Kwizicelo ze-photovoltaic, i-PV DC isolators isetyenziselwa ukukhupha ngesandla iipaneli zelanga ukwenzela ukugcinwa, ukufakwa okanye ukulungiswa.Ekufakeni, ukugcinwa kwesiqhelo kunye neemeko ezingxamisekileyo, iphaneli kufuneka ibe yodwa kwicala le-AC, ngoko ke ukutshintshwa kwe-isolation eyenziwa ngesandla kufakwe phakathi kwephaneli kunye ne-inverter input.Olu hlobo lokutshintsha lubizwa ngokuba yi-PV DC isolator switch kuba ibonelela nge-DC isolation phakathi kwephaneli ye-photovoltaic kunye nayo yonke inkqubo.Olu lutshintsho lokhuseleko oluyimfuneko, olunyanzelekileyo kuyo yonke inkqubo yokuvelisa amandla e-photovoltaic ngokwe-IEC 60364-7-712.I-solar panel dc isolator switch yenye yezona zinto zibalulekileyo zokhuseleko lwenkqubo ye-photovoltaic.Ukuthembeka kwayo kunye nokuzinza kuhambelana nokuveliswa kwamandla okuzinzile kunye nenzuzo yenkqubo ye-photovoltaic, kunye nokusebenza okukhuselekileyo nokuthembekileyo kwenkqubo ye-photovoltaic.Ngokunyuka kofakelo lwe-photovoltaic, ukuveliswa kwamandla kuye kwatsala ingqalelo enkulu.Nangona kunjalo, abatyali-mali bombane bayanda ukukhathazeka malunga nemiba yokhuseleko, eyenzeka rhoqo kwizityalo zamandla e-photovoltaic kwiminyaka yamuva.
Amazwe aseYurophu afana neJamani kunye ne-Netherlands afuna abavelisi be-inverter ukuba baqwalasele i-PV DC yokuguqula i-isolator eyakhelwe ngaphakathi, ngelixa amazwe afana ne-United Kingdom, i-Indiya, ne-Australia efuna ukuba iinkqubo ze-photovoltaic kufuneka zifake i-PV DC zokutshintsha kwe-isolator yangaphandle.Ngokucaciswa komgaqo-nkqubo we-photovoltaic waseChina, inani lofakelo lwe-photovoltaic liye landa unyaka nonyaka, ngakumbi kwiinkqubo ze-photovoltaic ezisasazwayo, kunye neenkqubo zophahla ziye zathandwa kakhulu.
Nangona kunjalo, into ebizwa ngokuba yi-photovoltaic DC isolator switch kwimarike yintoI-AC isolator switchokanye i-wiring version elungisiweyo, kungekhona i-DC yokuhlukanisa iswitshi ene-arc yokwenene yokucima kunye nemisebenzi ephezulu yokusika amandla.Olu tshintsho lwe-AC lwe-isolator lunqongophele kakhulu ekucimeni kwe-arc kunye nokwahlulwa kwamandla kumthwalo, okunokuthi kukhokelela ngokulula ekugqithiseni, ukuvuza kunye neentlantsi, kunye nokutshisa yonke isikhululo samandla e-photovoltaic.
Ngoko ke, kubaluleke kakhulu ukukhetha i-solar panel dc isolator switch efanelekileyo.I-BS 7671 ichaza ukuba indlela yokwahlula kufuneka ibonelelwe kwicala le-DC yofakelo lwe-photovoltaic, enokuthi ibonelelwe ngokutshintshwa kwe-isolation ehlelwe kwi-EN 60947-3.
Ngoko ke, unokukhetha njani i-PV DC efanelekileyo yokutshintsha ukuhlukanisa inkqubo ye-photovoltaic?
Umbane olinganisiweyo wokusebenza we-DC wokuzihlukanisa kufuneka ulingane okanye ube mkhulu kuneemfuno zenkqubo.Abaqhelekileyo badibana ne-UL508i 600V, IEC60947-3 1000V kunye ne-1500V.Ngokuqhelekileyo i-voltage yenkqubo exhunywe kwi-inverter yesigaba esisodwa iphezulu njenge-600V, kwaye i-inverter yentambo yesigaba sesithathu okanye i-inverter ephakathi iphezulu njenge-1000V okanye i-1500V.
2 Ipali – Intambo enye, 4 Ipali – Imitya emibini.
Kwi-switch ye-DC eyakhelwe-ngaphakathi, inani le-MPPT ye-inverter imisela ipali ye-DC isolator.Abaguquli beentambo eziqhelekileyo baneMPPT enye, iMPPT ezimbini, kunye nenani elincinci leMPPT kathathu.Xa sithetha ngokubanzi, ii-inverters ezinamandla alinganisiweyo e-1kW～3kW zamkela uyilo lweMPPT enye;ii-inverters ezinamandla okuhlelwa yi-3kW～30kW zamkela iMPPT ezimbini okanye isixa esincinci seeMPPT ezintathu.
Kwi-switch ye-isolator yangaphandle ye-DC, ungakhetha iipali ezi-4, iipali ezi-6, iipali ezi-8 zeeseti ezininzi zeepaneli zelanga okanye iipali ezi-2 kwiseti yeepaneli zelanga ngokweendlela ezahlukeneyo zoyilo.
Umtshini we-PV DC we-isolator kufuneka ukhethwe ngokowona mandla ombane aphezulu kunye nokukhoyo komtya wepaneli.Ukuba umsebenzisi uyazi iiparameters ze-photovoltaic inverters, ngakumbi abavelisi be-inverter, ukwenzela ukuba bagcine ngokufanelekileyo iindleko, banokukhetha ngokuhambelana nombane we-DC kunye ne-curve yangoku ukuqinisekisa ukuba zingasetyenziswa kuzo zonke iimeko zemozulu kunye namaqondo obushushu.
I-BS 7671 imisela ukuba ukwahlula iiswitshi ezihambelana ne-EN 60947-3 zifanelekile kwiinkqubo ze-photovoltaic.Ixabiso elilinganisiweyo lokutshintsha kwe-isolator kufuneka liqwalasele umbane ophezulu kunye nombane wentambo ye-photovoltaic ukuba ibe yodwa, kwaye emva koko ulungelelanise ezi parameters ngokwemeko yokhuseleko echazwe ngumgangatho wangoku.Oku kufuneka kube ngowona mlinganiselo usezantsi ofunekayo kutshintsho lwe-isolator.
Ukushisa kwendawo yokusebenza, inqanaba lokukhusela kunye nenqanaba lokukhusela umlilo kufuneka limiselwe ngokuhambelana nokusingqongileyo.Ngokubanzi iswitshi elungileyo ye-PV DC ye-isolator ingasetyenziswa ngokukhuselekileyo kumaqondo obushushu akwi--40°C ukuya kuma-60°C.Ngokubanzi, inqanaba lokhuseleko lokutshintsha kwe-DC yangaphandle kufuneka lifikelele kwi-IP65;i-switch ye-DC eyakhelwe-ngaphakathi kufuneka iqinisekise ukuba izixhobo zifikelela kwi-IP65.Ireyithingi yomlilo yebhokisi yendlu okanye ibhodi engundoqo iya kuhambelana ne-UL 94V-0, kwaye isiphatho siya kuhambelana ne-UL 94V-2.
Abasebenzisi banokukhetha indlela efanelekileyo ngokweemfuno zangempela.Ngokuqhelekileyo, kukho ukufakwa kwepaneli, ukufakwa kwesiseko kunye nokufakelwa komngxuma omnye.
Dongguan Slocable Photovoltaic Technology Co.,LTD.
Yongeza:I-Guangda Manufacturing Hongmei Science and Technology Park, No. 9-2, iCandelo leHongmei, iWangsha Road, iDolophu yaseHongmei, iDongguan, iGuangdong, iChina
I-TEL: 0769-22010201
