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Isimo Sesifundo: Uma Ukuvalela Okuzenzakaleyo Kuvalela Isilwane Sokusebenza Kwezilwane
Indawo yezindlu zokusebenza eNingizimu Spain yayifaka isilwane sokusebenza esinezinyawo sokusebenza kwe-120 kW esisebenzisa izinkampani ezisuswa kusukela emsebenzini wokubhala izinto. Emuva kwezinyangana ezintathu, isilwane sasihlwa ngokuphuma kwezinyawo ngokuphuma kwezinyawo. Umsebenzisi wabonakala ukuthi ubungozi bukhona kumthambo wokuvalela owavalelwe: ukuvalela okuzenzakaleyo kwe-AC wabhalwa apho kuyadingeka ukuvalela okuhlanganisa ipv circuit breaker kuyadingeka.
Kutheni Kwenza Ngaphansi Kwesilwane Sokusebenza Kwe-600V
I-akhombe lasebenzisa amasithi amabili apho uvimba lwesikhathi lwe-DC lusuka ku-600 V. Kulesi sikhathi, i-AC breaker engenakwenzela ukuthi ishusha ngokuphelele umcimbi ngoba ukuzulazula kwesikhathi sokugcina kwe-AC akhona. Ikhombe lalibeka kakhulu, laliphuma indlela yokushusha, futhi lalikhubaza ukukhuseleka kwezinye zonke izikhathi. Amaphilisithi ase-Hongxin AIOT abhalile esikhathini sobuchwepheshe bavakhiwe ukuthi i-combiner box ayinalo uhlobo lokuhlinzeka kwe-DC noma isikhathi sokubhekana nomcimbi.
Ukungasebenzi kwakubeza nezindleko zeminyaka emibili yokuqala yezindawo ezingavamile kumnyaka wokuphakama kwezinsuku zokuphakama. Ukuvakashela umcimbi kubhala imizuzwana emithathu yokuvala esikhathini ngoba i-AC breaker ayinayo ilog yezinto ezihlukanayo noma isikhathi sokubhekana ngaphandle kwekhaya. Lokhu kwakubiza umphathi ukuthi abeke ukukhuseleka kwe-DC nokubhekana okuncane kwezikhathi zonke kuzo zonke izindawo zokubuyisela, lokhu kubhekwa kuzo zonke izindawo zokubuyisela apho umthwali wokuqala wabekela ubuchwepheshe be-phovoltaic njengobuchwepheshe bezindawo zokubhala.
Ukuthi i-DC Arcing iyahlukana njani kuma-AC Faults
Ukugubha kwesikhathi esihlukene kusuka ku-zero 100 noma 120 amaxesha ngomzuzu, okunika isikhathi sokuphela kwesibhakisi ukuphela umsindo. Ukugubha kwesikhathi esifanayo akunazo isikhathi sokuphela. A ipv circuit breaker kufanele aphinde umsindo ngendlela engeziwe yezindawo ezipheleleyo zokuhlula nokuhambisa kumaqanda ukuze uphеле. Lokhu kubonisa ukuthi ukusetshenziswa kwesiqondiso sesikhathi esihlukene kuyinto engezansi yokuphatha kokhuseleko kodwa akuyi-ncwadi yokuqala.
Ukuchaza Umphumela: Kungani Imithambo Yophotovoltaic Iyadinga Ukuvikelwa Okukhethekile
Imithambo yophotovoltaic iyadala imiphumela eyingekho emithambeni yezindawo zokubhabha ezizwe. Ukuziqonda le mphumela kuyisibalo sokuqala sokufinyelela ekukhetheni okuphelele.
Ukugubha Kwesikhathi Esifanayo Ngaphandle Kokubhabha Nokubhabha Ngaphansi Kwemithambo
Xa imithambo engu-1 kuleli qembu lokubhabha ngokuphakeme liyafelisa noma liyabhabhwa, imithambo emibiyo liyagubha umgubho ngaphandle kwezindlela zokufelisa. Uma akukho-DC-rated ipv circuit breaker noma ukubhabha ngokuphakeme kwe-diode, lokhu kugubha umgubho ngaphandle kokubhabha kuyakhula izinkampani nezinkampani. Ukufelisa kusho okungasemthwini wokubonwa ngaphambi kokuthi iphelo likhulule izinkampani.
Umsindo Owangafunywa Ngamabhakisi Amanye
Ama-arc asezintweni eziningi akheka lapho isixhumi sikhululeka noma intambo iqhuma ngaphansi komjikelezo wokushisa. Lezi zinsimbi zenza umfutho ube ngaphansi komugqa wokuhamba kwe-breaker kodwa zikhiqiza ukushisa okwanele ukuqala umlilo. Ukubona iphutha le-arc kuphela okwakhelwe i-DC okungakwazi ukubona isiginesha. I-NEC Article 690 ixazulula lokhu ngokucacile ngesidingo sokuvikelwa kwephutha le-arc ye-photovoltaic yezinhlelo eziningi.
Ngokuvamile, izisebenzi zasensimini zithola imiphumela ngemva kokuba isivikelo sesishisiwe. Ukuthwebula izithombe ezishisayo lapho kusetshenziswa kuyasiza, kodwa ukuvimbela kungcono kunokuthola. Ukuchaza isiphazamisi se-pv esinomjikelezo ohlanganisiwe we-AFCI kususa ukuvikelwa kumthombo, lapho i-arc iqala khona, kunokuba uthembele kushintshi oyinhloko okude ukuze uzwe amandla amancane, aqhubekayo angalokothi adlule umkhawulo wokuhamba.
Ukuhlaziywa Kwezobuchwepheshe Nezindinganiso Zokuqedwa Kokusebenza Kwe-PV
Ukuchaza umshini ofanele kusho ukufunda izinombolo zikagesi namazinga afanele ndawonye.
I-DC Rating, i-1.56 Factor, ne-AFCI Logic
Ukuziphatha okufanele ipv circuit breaker iyabeka isivinini se-DC esiphakeme kune-sivinini esihlelwe kusuka kwe-string, akubona isivinini sakho sesibonelo. Amadesign amaningi ayisebenzisa ifaktor yokuqinisa ye-1.56 kwe-sivinini sokuvula-isikhathi ukuze sibuke izindlela zokuphakama kwezintemperatura ephansi. Amathuluzi amasha ayisebenzisa umsebenzi we-AFCI owavumela ukuthatha isampuli yewaveform yamandla, ukubhala isignature esingapheliyo yekhaki, futhi ukuvula isikhathi ngemizuzwana emibili. Amathuluzi we-Hongxin AIOT ayathola ngokuvamile isivinini sokuvula kwe-DC nokuxhumana kwesikhathi se-AFCI ukuze abadesayina bakhombise ukuthi kuyaphila.
IEC 62109, IEC 60947-2, NEC 690, UL 1741
Izinsiza ezine ziyagcina ukuthi zisifundazwe. I-IEC 62109 iyacovera ubuciko bezinkambo zokusebenza kwezinhloso zezibhambo zokugcina imithombo yamandla. I-IEC 60947-2 iyachaza ukusebenza kwezinkambo zokuvula kwezinhloso zezibhambo zokugcina imithombo yamandla, kufaka nazo amathuluzi ase-DC. Emzini ka-North America, i-UL 1741 iyathola izinkambo zokusebenza nezinye izinto zokusebenza, ngakho-ke i-NEC Article 690 iyachaza izimithi zokufaka. A ipv circuit breaker oyidingekayo ukuthi yetholakale kusukela kwezwe eyodwa kufanele ibe nemibono yokutholakala kokutholakala okuhambisana nokutholakala, akubona isithombe sokutholakala se-AC.
Ukubhala nokufunda ukuthi iphi indawo yekhodi kuyisidingo esifanayo nesicelo sokuzimela. Indocumenti enobuhle bukhona ibonisa umodeli wokugcina, i-DC breaking capacity, nobungo obuzimelayo. U-Hongxin AIOT ubhalisa amabhalo ngalenyathelo lekhodi ukuze i-pv circuit breaker efakwe eNingizimu Afrika iyafundwa ngokufanayo nendocumenti yayo eminyakeni emibili ngemva kwalokho ekupheleni kwesicelo sokubhukha okanye ekupheleni kwesicelo sokuthengiswa kabusha.
Ukukhetha, ukubheka nokulungisa ngokwemisebenzi
Amapharti amahle kuphela ayilungisa isistimu uma akhethwa, afakwa nokulungiswa ngokuthembeka.
Ukukhetha i-PV Circuit Breaker eyafanele
Yenza isikhombiso sesithili se-DC voltage esiphakeme kanye ne-short-circuit current yesiqu ezindaweni zonke, emva kwalokho yengeza i-margin ye-1.56. Qiniseka ukuthi inomthwalo we-DC breaking rating kanye ne-AFCI ekufakweni kwezindaweni ezenkulu. Thenga kuma-supplier abhala amareporti okuzimela; u-Hongxin AIOT unikeza i-IEC ne-UL documentation ngalenyathelo lemodeli ukuze amateki wezokuthenga aqede amasiko nezibheko ngaphandle kokusebenzisa izinto ezintsha.
Amabheko okuhlala kusqu ezihlakanipha
Hlola amabhokisi okuhlanganisa njalo ezinyangeni eziyisithupha ukuze ubone ukuthi awashisi, awathintekile noma awasebenzi kahle yini. Qinisekisa ukuthi izixhumi zokuhlukanisa zine-DC-rated nokuthi ipv circuit breaker namanje uchofoza ngokuqinile endaweni yokuvala. Faka esikhundleni noma iyiphi iyunithi eye yaphazamiseka izikhathi ezingaphezu kwezimbili, ngoba ukuxhumana kwangaphakathi kuyawohloka ngemva kwesenzakalo ngasinye.
Gcina ilog yekhasi elilodwa nge-array ngayinye ubhale uhambo ngalunye, isimo sezulu, nokufundwa kwamanje ngaleso sikhathi. Ukuthambekela kwemvamisa yokuhamba kukhomba ekuwohlokeni kwesixhumi ngaphambi kokuba kube nokuhluleka okukhulu. Isiphazamisi sikagesi esihamba ngokuphindaphindiwe ngaphansi komthwalo ofanayo sidinga ukuhlaziywa kwesizathu esiyinhloko, hhayi nje ukusethwa kabusha nethemba.
Imibuzo Evame Ukubuzwa
Umbuzo: Ingabe isiphambeki se-AC esivamile singavikela intambo yelanga?
Ukubhala kwe-AC miniature circuit breaker ayikwazi ukusula ukugcina kwe-DC ngokuphelele ngoba i-DC ayinakho ukuzulazula okungapheliyo okuhambisana nokuvula kwesikhathi sokugcina kwe-AC. Kuma-600 V DC izihlangothi zingalwa ngokuthi zilwe ngezinye futhi zizokhupha ukukhuseleka. Kufuneka kubhekwe isikhundla se-pv circuit breaker esithile esinezinga lokubhala kwe-DC ne-chamber yokuvula ukugcina.
Umbuzo: Ingaba inga yezivuli yezivuli ezenziwa ngokuphelele kwe-pv circuit breaker?
Isixhumanisi kufanele sibe phakade kunezinga lokuvula kwe-string, akaleni inga yezivuli yezivuli yezibhodli. Abaningi abasayensi bahlukanisa inga yezivuli yezivuli yezibhodli kwezintemperatura ezincane ngo-1.56 futhi bakhetha isikhundla sesikhundla esinezinga eliphezulu kwalokho. Lokhu kunciphisa ukuthi isikhundla siyakwenzeka ukuthi sibekwe ngokuphelele emva kwezinsuku zomhla waseWinter lapho inga yezivuli iyadlula.
Umbuzo: Ingaba ukukhuseleka kwe-arc-fault kuyidinga kwezinhlelo zokuphatha i-photovoltaic?
Kwiminye yezindawo zaseNorth America, i-NEC Article 690 ibiza ukuthi kufanele kubekho ukulawula kwemithombo yokuqhubeka kwe-photovoltaic kwezincwadi zase-dc. Nangakapheli kungabizwa ngokuthi kufanele, i-AFCI logic ihlola isignature yomoya wokugqibela phambi kokuthi kwenzeke umsindo. Ukuchaza i-pv circuit breaker enesigaba se-AFCI sifuna ukunciphisa isibophelo sokumsindo emazini okanye emazini ongenakufihla ngokuphelele.
Umbuzo: Kuphi na isikhathi esifanayo sokuhlola i-combiner box breakers?
Ukubuka ngokwesibonelo nokuthembeka kwezinkathi ezisixhenxe kubona izinkinga zonke kusasa. Buka amakhanda abuhlungu, amathuba awavamile, noma i-breaker eyayiqinile kumgomo wokuvalelwa. I-pv circuit breaker yonke eyakwenzela ukukhupha umsindo kunezinkathi ezimbili kufanele ichazwe kabusha, ngoba amaphoyinti angaphakathi ayahlala akhupha ukukhupha ngokuphinda-phinda kwezinkathi zokugqibela.
Umbuzo: Iziphi izistandare eziyabonisa ukuthi i-pv circuit breaker iyasebenza ngokwesistandare?
IEC 60947-2 ibhekisela kubusebenziso bekhiyuthi yokuqhubeka kwemitha emnyama, kungakhathaliseki kwezinhloso zokugcina DC, ngakho-ke IEC 62109 ibhekisela kusafuthi sokusetyenziswa kwemitha yokuqhubeka kwe-photovoltaic. Emazweni e-Amerika, UL 1741 ne-NEC Article 690 ziyasebenza. Abasendisa kufanele banikeze izitifiketi zokuzimisa zibhekisela lezi zindikimini, angakho isitifiketi sokuzimisa kwe-AC esingaphansi.
Umbuzo: Kungani ufuna umsindisi owenziwe ngokuphathelene nokubhala konke ukudokumenta?
Abacusthume, abasindisana kwezinsurance, nabasindisana bokuzimisa kwelekthrikhu bakhathala kakhulu ukuthi kubekhe ukuzimisa okwenzeka kubonakaliswa. Umsebenzisi njenge-Hongxin AIOT owenziwe ngokuphathelene nokubhala iziripholi zokuzimisa ze-IEC ne-UL ngezikhathi zonke zokuzimisa kwe-pv circuit breaker kusiza umsindisi ukuphuma ngokuphelele kwezizimiso ngaphandle kokubuyisela ukwenza futhi kusiza umphathi wokugcina ukuthola inketho yokuzimisa eyenzeka kubonakaliswa.