Iyini i-DC Circuit Breaker?

I-DC circuit breaker isho isihlukanisi sesifunda esisetshenziswa ohlelweni lokusabalalisa amandla e-DC, esingavikela izinto zikagesi ezisebenza ngamandla e-DC.Ngokuvamile ilungele ukukhiqizwa kwamandla elanga le-photovoltaic kanye nezinhlelo zokusabalalisa amandla, amasistimu okugcina amandla ebhethri, kanye nezinhlelo zokushaja zemoto yamandla entsha ye-DC.I-Slocable's solar DC circuit breakeraklanyelwe ukuvikela izintambo ezitholakala phakathi kweqembu ngalinye lamamojula e-PV kanye nama-inverter e-PV kusukela ekulayishweni ngokweqile kanye namasekhethi e-DC ayisiyingi esifushane, futhi afakwe ezindaweni ezivalekile zokuvikela i-PV ekupheleni kochungechunge ngalunye lwamamojula e-PV.

Itheminali yamandla okufakwayo ye-DC circuit breaker iwuhlelo lwamanje oluqondile.Izigebengu ezijwayelekile ze-DC zihlanganisa i-DC MCB (i-DC miniature circuit breaker), i-DC MCCB (i-DC molded case circuit breaker) kanye nohlobo lwe-B RCD (idivayisi yamanje eyinsalela).

I-DC Miniature Circuit Breaker (DC MCB)

Ama-DC miniature circuit breaker aklanyelwe izinhlelo zokusebenza zesekethe ye-DC ukuze kuvikeleke i-overcurrent kanye nesekhethi emfushane ezintweni zikagesi noma izinto zikagesi.Ama-DC mini ama-circuit breaker afakwe uzibuthe okhethekile ophoqelela i-arc ku-arc slot futhi acime i-arc ngesikhathi esifushane kakhulu.

Isekhethi ye-DC ingakhiywa endaweni YOKUVALIWE kusetshenziswa idivayisi yokukhiya njengendlela yokuphepha yokuhlakaza inverter ye-PV.Njengoba iphutha lamanje lingageleza ngendlela ephambene neyamanje yokusebenza, i-DC circuit breaker ingakwazi ukubona futhi ivimbele noma yikuphi ukugeleza kwamanje kwe-bidirectional.Kunoma yikuphi, isinyathelo esisheshayo ensimini siyadingeka ukusula iphutha lamanje.

Ama-DC miniature circuit breaker asetshenziswa kakhulu ezinhlelweni zesistimu ye-DC njengamandla amasha, i-solar photovoltaic kanye nezinhlelo zokugcina amandla ebhethri elanga.Isimo se-voltage ye-DC mini circuit breaker ngokuvamile i-DC 12V-1500V.

I-DC MCB ne-AC MCB inomsebenzi ofanayo, umehluko omkhulu imingcele ebonakalayo yomkhiqizo.Ngaphezu kwalokho, izimo zokusetshenziswa kwe-AC MCB ne-DC MCB zihlukile.

I-AC circuit breaker imakwe emkhiqizweni njengokuthi LOAD kanye ne-LINE, futhi uphawu lwe-DC circuit breaker luphawulwe emkhiqizweni njenge-positive (+), izimpawu ezingezinhle (-) kanye nendlela yamanje.

Uyini Umsebenzi We-DC Mini Circuit Breakers?

Izimiso ezifanayo zokuvikela ezishisayo nezikazibuthe njengama-circuit breaker e-AC zisebenza kuma-DC miniature breaker.

Ukuvikela okushisayo kugibelisa i-DC mini circuit breaker uma i-current idlula inani elilinganiselwe.Kulo mshini wokuvikela, othintana nabo be-bimetallic banwebeka ngokushisa futhi bahambe i-circuit breaker.Ukuvikela okushisayo kusebenza ngokushesha kakhulu ngoba ukushisa okwengeziwe kukhiqizwa ukuze kunwetshwe futhi kuvulwe uxhumano lukagesi uma i-current iphezulu kakhulu.Ukuvikela okushisayo kwama-circuit breaker e-DC kuvimbela ukugcwala kwamanzi okungaphezulu kancane kunamaza okusebenza ajwayelekile.

Ukuvikela kazibuthe kugibela ama-DC MCB uma amafulensi anamandla ekhona, futhi impendulo ihlala isheshayo.Njengama-AC circuit breaker, amandla okuphuka alinganiselwe ama-DC circuit breaker amele iphutha elibaluleke kakhulu lamanje elingaphazanyiswa.Ku-DC mini breaker, i-current evinjiwe ihlala njalo, okusho ukuthi i-circuit breaker kufanele iqhubeke nokuvula othintana nabo kagesi ukuze iphazamise amandla amanje.Ukuvikela kazibuthe kwama-DC amancane ama-circuit breaker kuvikela kuhlu olubanzi lwamasekhethi amafushane namaphutha kunokulayisha ngokweqile.

Kungani I-DC Solar Circuit Breakers Ibalulekile Ezinhlelweni Ze-PV?

Amasistimu we-Photovoltaic anamandla okuba yindlela esebenzayo yamandla avuselelekayo.I-solar panel eyodwa noma ngaphezulu ingasetshenziswa, noma ingahlanganiswa ngokusebenzisa ama-inverters nezinye izingxenye zikagesi nezemishini.Izinhlelo ze-PV kumele zigcinwe ngazo zonke izindleko, futhi noma isiphi isigameko esincane singakhula ngokushesha sibe inkinga enkulu kulo lonke uhlelo.

Ngakho-ke, ama-solar circuit breakers e-DC ayingxenye ebalulekile yezinhlelo ze-photovoltaic, futhi ukuvikelwa kokushisa kungasiza ezimweni zamanje zokulayisha ngokweqile.Ukuvikela kazibuthe kuma-solar DC ama-circuit breaker kungagila i-solar circuit breaker uma kunamaphutha amaningi.Ama-circuit breaker e-DC angaphazamisa imisinga yamaphutha ngisho nasezimeni ezimbi kakhulu.Ukuvikela kazibuthe kubalulekile kuma-DC breaker njengoba kuvikela kumasekethe amafushane nokunye ukwehluleka.

Ama-photovoltaic circuit breakers abalulekile ezinhlelweni zephaneli ye-solar PV.Isifunda sephaneli yelanga siyingxenye ebizayo yesistimu ye-photovoltaic.Ngakho-ke, kubalulekile ukubavikela nge-solar PV circuit breaker.Ama-circuit breaker e-PV DC nawo avikela amasekhethi namabhodi wesekethe.Ingakwazi ukuguqula imisebe yelanga ibe yamanje eqondile ngokusebenzisa amaphaneli elanga, futhi ukufakwa kwe-photovoltaic kudinga ukusetshenziswa kwe-PV circuit breaker.

Ezimotweni zikagesi, amabhethri azo angashajwa kusetshenziswa isiteshi sokushaja imoto kagesi.Ngakho-ke lezi zinhlelo zidinga ama-DC MCBs ukugwema izingozi ngoba zonke zidinga ukusebenzisa i-direct current, ama-solar panel nezimoto zikagesi zisebenzisana kahle, futhi azidingi ukuguqula lowo msinga oqondile ube wamanje oshintshashintshayo, ongalawuleka kalula kusetshenziswa i- Isistimu ye-DC circuit breaker ukuphendula ngokushesha.

Olunye uhlobo lwe-DC Circuit Breaker - I-DC Molded Circuit Breaker (DC MCCB)

Ama-circuit breaker akhiwe nge-DC alungele ukugcina amandla, ezokuthutha kanye namasekethe e-DC wezimboni.Izigebengu zesekhethi ezibunjiwe zenzelwe ukuhlangabezana nezidingo eziphakeme kakhulu zokusebenza, kuyilapho izinhlobonhlobo zezesekeli zitholakala ukuze zivumelane nokucaciswa kwenkundla okuhlukile.Ama-DC MCCB anamuhla anwebe izinhlelo zokusebenza ukuze zifake ama-solar photovoltaics, iziteshi zokushaja izimoto zikagesi, indawo yokugcina amabhethri nezinhlelo ze-UPS, kanye nokusabalalisa amandla e-DC ezohwebo nezimboni.

I-DC MCCB inomsebenzi ofanayo nowe-AC MCCB, futhi inomsebenzi wokuvikela okuchichimayo kanye nokuvikela isifunda esifushane kumasistimu okusabalalisa amandla amanje aphezulu.

Asetshenziswa futhi kumasekhethi asebenza ngebhethri angagxiliwe ukwenza isipele esiphuthumayo namandla ayisipele.Itholakala kufika ku-150A, 750 VDC futhi kufika ku-2000A, 600 VDC.Kuma-circuit breaker e-DC asetshenziswa ezinhlelweni ezisekelwe phansi ze-photovoltaic ekufakweni kwelanga, ubunjiniyela bezicelo kanye nokubuyekezwa kuqinisekisa ukuthi izidingo zokuvikela ziyahlangatshezwa.

I-DC Molded Case Circuit Breaker iyisisetshenziswa sokuvikela isilawuli sesekhethi yokugcina amandla, ezokuthutha kanye namasekethe e-DC wezimboni.Angasetshenziswa ezinhlelweni ezisekelwe phansi noma ezingenasisekelo, ezihlangabezana nama-voltage aphezulu kanye namazinga aphansi amaphutha amanje wesistimu yelanga.I-Slocable ikhiqiza ama-high-voltage DC breaker ahlinzeka ngokusebenza okuphezulu futhi asize ukugcina izindleko ziphansi, amabreaker e-MCCB DC e-Slocable aletha kufika ku-150-800A, 380V-800V DC futhi ahlangabezana nezindinganiso eziqinile zekhwalithi.

Umehluko Phakathi kwe-AC ne-DC Circuit Breaker

Umehluko omkhulu phakathi kwamanje oqondile kanye ne-alternating yamanje ukuthi i-voltage ephumayo yamanje eqondile ihlala njalo.Ngokuphambene, okukhipha amandla kagesi emijikelezweni yamanje eshintshanayo izikhathi ezimbalwa ngomzuzwana, futhi isignali yamanje eshintshanayo ihlala ishintsha inani layo njalo ngomzuzwana.I-arc ye-circuit breaker izocishwa ku-0 V futhi isifunda sizovikelwa kusuka kumthamo ophezulu.Kodwa isignali ye-DC yamanje ayishintshi, isebenza esimweni esingaguquki, futhi inani le-voltage lishintsha kuphela lapho isifunda sihamba noma isifunda sehla sibe yinani elithile.

Uma kungenjalo, isekethe ye-DC izohlinzeka ngevelu ye-voltage engaguquki ngomzuzwana owodwa ngomzuzu.Ngakho-ke, akunconywa ukusebenzisa i-AC circuit breaker ku-DC state njengoba lingekho iphuzu elingu-0-volt ku-DC state.

Izinyathelo Zokuqapha Lapho Uthenga Ama-Circuit Breakers

Ngenxa yokuthi izindlela zokuvikela zamaza e-AC kanye ne-DC zicishe zifane, ama-circuit breaker adizayinelwe ukusebenzisa kokubili.Kodwa-ke, kubalulekile ukuhlola kabili ukuthi ukunikezwa kwamandla kanye ne-circuit breaker ziwuhlobo olufanayo lwamanje.Uma ubeka i-circuit breaker engalungile, ukufakwa ngeke kuvikelwe ngokwanele futhi kungase kwenzeke ingozi kagesi.

Esinye isici esibalulekile okufanele sicatshangelwe isilinganiso samanje sezintambo ezixhuma i-DC mini circuit breaker ezintweni zikagesi ezivikelwe.Ngisho noma usetha i-DC breaker ngendlela efanele, izintambo ezincane zingashisa kakhulu, zincibilikise ukufakwa kwazo futhi zibangele ukungasebenzi kukagesi.

Ama-circuit breaker e-DC awavamile ukusetshenziswa njengama-circuit breaker e-AC, kodwa abaluleke ngokufanayo.Ama-DC MCB awubuchwepheshe obusha, njengoba izinto eziningi zasendlini zisebenzisa amandla ashintshayo.Ama-circuit breaker eSolar DC adlala indima ebalulekile ekuvikelweni kukagesi kobuchwepheshe bokonga amandla obubiza kakhulu njengamalambu e-LED, amaphaneli elanga e-photovoltaic, nezimoto zikagesi.Njengoba lobu buchwepheshe bufinyelela ezinhlobonhlobo zabathengi, ama-solar circuit breaker azoba nemakethe enkulu.Ngakolunye uhlangothi, ama-circuit breaker e-DC awubuchwepheshe obuzinze futhi obaziwa kakhulu kwezohwebo, futhi adlala indima ebalulekile ekuvikeleni imishini enembayo ephezulu kanye nokushisela nge-arc.

Uma isistimu kagesi idinga ukusetshenziswa kwe-circuit breaker yamanje eqondile, kuvame ukutuswa ukuthi ugcine izinsizakalo zonjiniyela abangochwepheshe nochwepheshe ukuze kuqinisekiswe ukuthi ungakhetha futhi ufake i-smart DC circuit breaker.