Njengebhizinisi elimele kakhulu e-Wenzhou, i-YUANKY inomlando omude wentuthuko kanye nochungechunge lwezimboni oluphelele. Imikhiqizo yethu futhi inokuncintisana kakhulu emakethe.njengeMCB.

I-MCB (I-Miniature Circuit Breaker, i-circuit breaker encane) ingelinye lamadivayisi okuvikela esibulalayo asetshenziswa kakhulu kumasistimu okusabalalisa ama-voltage aphansi. Ngezinzuzo ezinjengosayizi omncane, ukusebenza okulula kanye nokuvikela okunembile, isetshenziswa kakhulu emigqeni yokusabalalisa yezakhiwo zezimboni, ezentengiselwano kanye nezomphakathi, ukwenza imisebenzi eyinhloko njengokulayishwa kwesekhethi kanye nokuvikela isifunda esifushane. Okulandelayo ukuhlaziya okuningiliziwe kwezici zayo zokusebenza okuvela ezicini eziningi ezifana nemisebenzi eyinhloko, izici zobuchwepheshe, nezici zohlelo lokusebenza.

I. Umsebenzi Wokuvikela Okubalulekile: Qinisekisa ukusebenza okuphephile kwesekhethi

Inani eliwumongo le-MCB lisekuvikelekeni kokuphepha kwezintambo zokusabalalisa nezinto zokusebenza zikagesi. Umsebenzi wayo wokuvikela ufinyelelwa ngokuyinhloko ngezinqubo zesenzo ezinembile, ikakhulukazi ezihlanganisa lezi zinhlobo ezimbili ezilandelayo zokuvikela okuyinhloko:

1. Umsebenzi wokuvikela ukulayisha ngokweqile

Uma umjikelezo usebenza ngokujwayelekile, owamanje ungaphakathi kwebanga elilinganiselwe. Kodwa-ke, uma kunamadivayisi amaningi kagesi noma isifunda sigcwele ngokweqile isikhathi eside, i-current in the line izodlula inani elilinganiselwe, okwenza izintambo zishise. Uma ilayishwa kakhulu isikhathi eside, ingase ibangele ukuguga kwe-insulation, amasekhethi amafushane ngisho nemililo. Ukuvikelwa kokulayishwa ngokweqile kwe-MCB kufinyelelwa ngedivayisi yohambo olushisayo ye-bimetallic strip: uma i-current idlula inani elilinganiselwe, i-bimetallic strip iyagoba futhi yonakale ngenxa yokushisa okukhiqizwe i-current, ishayela indlela yohambo ukuthi isebenze, okubangela ukuthi abathintwayo be-circuit breaker bavule futhi banqamule isekethe.

Ukuvikela kwayo ukugcwala kakhulu kunesici sesikhathi esiphambene, okungukuthi, ukugcwala okukhulu kwamandla, isikhathi sesenzo siba sifushane. Isibonelo, lapho okwamanje kuwu-1.3 izikhathi zamanje ezilinganiselwe, isikhathi sokusebenza singathatha amahora ambalwa. Uma okwamanje kufinyelela izikhathi eziyisithupha kunomanje olinganiselwe, isikhathi sesenzo singafushaniswa sibe phakathi kwamasekhondi ambalwa. Lokhu akugwemi nje kuphela ukukhubeka okungadingekile okubangelwa ukugcwala okuncane kwesikhathi esifushane kodwa futhi kunqamula ngokushesha isifunda uma kwenzeka kugcwala kakhulu, kufinyelele ukuvikeleka okuguquguqukayo nokuthembekile.

2. Umsebenzi wokuvikela isifunda esifushane

I-short circuit ingenye yamaphutha ayingozi kakhulu kumasekhethi, ngokuvamile abangelwa ukulimala kokufakwa kwezintambo noma amaphutha angaphakathi emishini. Ngalesi sikhathi, amandla amanje akhuphuka ngokushesha (okungenzeka afinyelele emashumini noma ngisho namakhulu ezikhathi ezikaliwe), futhi amandla amakhulu kagesi nokushisa okukhiqizwa kungashisa ngokushesha izintambo nezinto zokusebenza, futhi kubangele imililo noma izingozi zokushaqeka kukagesi. Ukuvikelwa kwesekethe emfishane ye-MCB kufinyelelwa ngedivayisi yohambo lukazibuthe: lapho i-short-circuit current idlula ikhoyili yedivayisi yohambo lukazibuthe, kukhiqizwa amandla anamandla kazibuthe kagesi, ahehe izikhali ukuthi zishaye indlela yohambo, okubangela ukuthi abathintwayo bavule ngokushesha futhi banqamule isekethe.

Isikhathi sesenzo sokuvikela isikhashana sifushane kakhulu, ngokuvamile phakathi kwamasekhondi angu-0.1. Ingakwazi ukuhlukanisa ngokushesha indawo yephutha ngaphambi kokuba iphutha likhule, inciphise ukulimala kwamaphutha e-short-circuit emugqeni nasezisetshenziswani, futhi ivikele ukuphepha komuntu siqu nempahla.

Ii. Izici Zobuchwepheshe: Inembile, izinzile futhi inokwethenjelwa

1. Ukunemba okuphezulu ekuhambeni

Amanani esenzo sokuvikela we-MCB aklanywe ngokuqinile futhi alinganiswa ukuze kuqinisekiswe ukusebenza okunembayo ngaphakathi kwebanga lamanje elishiwo. Inani lamanje lokusetha lokuvikela kwakho ukulayishwa ngokweqile (njengokungasebenzi izikhathi ezingu-1.05 zamanje ezilinganiselwe futhi ezisebenza phakathi nesikhathi okuvunyelwene ngaso izikhathi ezingu-1.3 esamanje esilinganiselwe) kanye nobuncane bokusebenza bamanje bokuvikela kwesifunda esifushane (ngokuvamile izikhathi ezingu-5 kuya kwezingu-10 zamanje ezilinganiselwe) kokubili kuthobela izindinganiso zamazwe ngamazwe (njenge-IEC 60898) kanye namazinga kazwelonke angu-3 GB (njengamazinga kazwelonke angu-309). Phakathi nenqubo yokukhiqiza, i-MCB ngayinye kufanele ihlole ukulinganisa okuqinile ukuze kuqinisekiswe ukuthi iphutha lesikhathi sesenzo ngaphansi kwezimo zamanje ezihlukile lilawulwa ngaphakathi kwebanga elivumelekile, ukugwema "ukwehluleka ukusebenza" (ukungakhubeki ngesikhathi samaphutha) noma "ukusebenza okungamanga" (ukukhubeka ngesikhathi sokusebenza okuvamile).

2. Impilo ende yemishini nekagesi

I-MCB idinga njalo ukumelana nokuvala nokuvula imisebenzi kanye nomthelela wamanje wamaphutha, ngaleyo ndlela ibe nezidingo eziqinile zempilo yemishini nekagesi. Impilo yobumishini isho inani lezikhathi lapho umephuli wesifunda esebenza khona endaweni engekho. Impilo yemishini ye-MCB yekhwalithi ephezulu ingafinyelela izikhathi ezingaphezu kuka-10,000. Ukuphila kukagesi kubhekisela enanini lezikhathi osebenza ngazo ngaphansi komthwalo wamanje olinganiselwe, ngokuvamile izikhathi ezingekho ngaphansi kuka-2,000. Izingxenye zayo eziyinhloko zangaphakathi (njengoxhumana nabo, izinqubo zokukhubeka, neziphethu) zenziwe ngezinto ezinamandla kakhulu (njengokuxhumana kwe-alloy yesiliva kanye nezingxenye ze-phosphor bronze conductive), futhi ngokusebenzisa amasu anembile okucubungula nokushisa, ukumelana nokuguga, ukumelana nokugqwala, nokumelana nokukhathala kuyathuthukiswa ukuze kuqinisekiswe ukusebenza okuzinzile ngisho nangemva kokusetshenziswa isikhathi eside.

3. Amandla okuphuka ashintshwa ukuze ahambisane nezidingo zendawo

Umthamo wokwephula ubhekisela enanini eliphezulu lamanje lesekethe emfishane i-MCB engalephula ngokuphephile ngaphansi kwezimo ezishiwo, futhi iyinkomba eyinhloko yokukala amandla ayo okuvikela isiyingi esifushane. Ngokuya ngezimo zohlelo lokusebenza, amandla okuphulwa kwe-MCB angahlukaniswa abe amaleveli amaningi, afana nalawa:

Ezimweni ezivamile, i-MCBS enamandla okuphula angu-6kA noma 10kA ivame ukusetshenziswa, engaphatha amaphutha esifunda esifushane emizini noma ezakhiweni ezincane zentengiso.

Ezimeni zezimboni, i-MCBS enamandla okuphuka (afana no-15kA kanye no-25kA) iyadingeka ukuze ivumelane nezimo ezinamathuluzi aminyene kanye namaza amakhulu wesiyingi esifushane.

Ukugcwaliseka komthamo wokuphuka kuncike kusistimu yokucima i-arc ethuthukisiwe (njengegumbi lokucima i-arc yegridi). Ngesikhathi sokuphuka kwe-short-circuit, i-arc ifakwa ngokushesha ekamelweni lokucisha i-arc, futhi i-arc ihlukaniswe ngama-arcs amafushane amaningi ngokusebenzisa amagridi ensimbi, ukunciphisa i-arc voltage kanye nokucima ngokushesha i-arc ukuvimbela ukulimala kwesakhiwo sangaphakathi se-breaker circuit ngenxa yokushisa okuphezulu kwe-arc.

Iii. Izici Zesakhiwo Nezokusebenza: I-Miaturization kanye nokuba lula

Incane ngosayizi futhi kulula ukuyifaka

I-MCB yamukela umklamo we-modular, ihlangene ngosayizi (imvamisa inamamojula ajwayelekile afana no-18mm noma 36mm ububanzi), futhi ingafakwa ngokuqondile kuma-rails amabhokisi okusabalalisa ajwayelekile noma amakhabethe okusabalalisa, konga indawo yokufaka. Ukwakheka kwayo okuhlangene kwenza ukuvikelwa okuzimele kwamasekhethi amaningi ngaphakathi kwesikhala esilinganiselwe sokusabalalisa amandla. Isibonelo, ebhokisini lokusabalalisa lasendlini, i-MCBS eminingi ingasetshenziswa ukulawula amasekhethi ahlukene njengokukhanyisa, amasokhethi, nama-air conditioner ngokulandelanayo, kuzuzwe ukuvikeleka okuhlukene nokuphathwa, okulungele ukutholwa kwamaphutha nokulawula ukusetshenziswa kwamandla.

2. Kulula ukusebenza futhi kulula ukuyinakekela

Indlela yokusebenza ye-MCB yakhelwe okomuntu. Umsebenzi wokuvala (” ON “position) kanye nokuvula (” OFF”) kufinyelelwa ngesibambo. Isimo sesibambo sibonakala ngokucacile, sivumela ukwahlulela okunembile kwesimo sokucisha sesekethe. Ngemuva kwe-TRIP yephutha, isibambo sizoba ngokuzenzakalela endaweni emaphakathi (” TRIP “indawo), esiza abasebenzisi ukuthi babone ngokushesha isekethi enephutha. Uma usetha kabusha, vele ususe isibambo endaweni ethi "VALIWE" bese usiphushela endaweni ethi "VULIWE". Awekho amathuluzi ochwepheshe adingekayo futhi ukusebenza kulula. Ekulungiseni kwansuku zonke, i-MCB ayidingi ukulungisa amaphutha okuyinkimbinkimbi noma ukuhlolwa. Idinga kuphela ukuhlolwa okuvamile ukuze kuqinisekiswe ukuthi ukubukeka kuqinile nokuthi ukusebenza kuhamba kahle, okuholela ezindlekweni eziphansi zokunakekela.

3. Ukusebenza okuhle kakhulu kwe-insulation

Ukuqinisekisa ukuphepha kukagesi, i-casing kanye ne-insulating components ye-MCB yenziwe ngezinto ezivimbela amandla kagesi aphezulu kanye nezinga lokushisa eliphezulu (njengamaplastiki e-thermosetting kanye ne-ABS e-flame-retardant), enokumelana nokufakwa kwe-≥100MΩ, ekwazi ukumelana ne-voltage engu-2500V AC noma i-flashoverno test (i-flashoverno minute) Isengakwazi ukugcina ukusebenza kahle kokufakwa ezindaweni ezinokhahlo njengokuswakama nothuli, ivimbele ukuvuza noma amasekhethi amafushane wesigaba nesigaba, futhi iqinisekise ukuphepha kwabaqhubi nemishini.

Iv. Imisebenzi Enwetshiwe Nokuzivumelanisa nezimo: Ukuhlangabezana Nezidingo Ezihlukahlukene

1. Hlukanisa izinhlobo ezitholiwe

Ngokungeziwe ekulayishweni okuyisisekelo okuyisisekelo nokuvikelwa kwesiyingi esifushane, i-MCB ingaphinda ihlangabezane nezidingo zezimo ezahlukahlukene ngokunwetshwa kokusebenza. Izinhlobo ezijwayelekile zokuphuma kokunye zihlanganisa:

- I-MCB enokuvikelwa kokuvuza (RCBO) : Ihlanganisa imojuli yokuthola ukuvuza ngesisekelo se-MCB evamile. Uma ukuvuza kwenzeka kusekethe (amandla asele edlula ama-30mA), ingakhubeka ngokushesha ukuze ivimbele izingozi zokushaqeka kukagesi futhi isetshenziswa kakhulu kumasekhethi ezisokhethi zasendlini.

- I-MCB enokuvikelwa kwe-overvoltage/undervoltage: Ihamba ngokuzenzakalelayo lapho i-voltage yegridi iphezulu kakhulu noma iphansi kakhulu ukuze ivikele izinto zikagesi ezizwelayo njengeziqandisi nama-air conditioner emonakalweni obangelwa ukushintshashintsha kwamandla kagesi.

- I-MCB yamanje elinganiselwe elungisekayo: Lungisa inani lamanje elilinganiselwe ngeknobhu, elifanele izimo lapho umthwalo wamanje udinga ukulungiswa kalula.

2. Ukuvumelana nezimo kwemvelo okuqinile

I-MCB ingasebenza ngokuzinzile ngaphansi kwezinhlobonhlobo zezimo zemvelo, ngokuvamile ezisebenza ngaphakathi kwebanga lokushisa elingu -5℃ kuya ku-40 ℃ (amamodeli akhethekile anganwetshwa aye ku -25℃ kuya ku-70℃), enomswakama ohlobene ongu-≤95% (akukho ukujiya), futhi angakwazi ukuzivumelanisa nezimo zezulu zezifunda ezihlukahlukene. Ngaleso sikhathi, isakhiwo sayo sangaphakathi sinekhono elithile lokumelana nokudlidliza nokushaqeka, futhi singasebenza ngokwethembeka kumasayithi wezimboni noma ezimotweni zokuthutha (njengemikhumbi nezimoto zokuzijabulisa) ngokudlidliza okuncane.

Umehluko kusuka kwamanye ama-circuit breaker:

I-MCB (I-Miniature Circuit Breaker): Isetshenziselwa kakhulu ukuvikelwa kwesekethe enamanje aphansi (imvamisa ingaphansi kwama-ampere ayi-100).

I-MCCB (I-Molded Case Circuit Breaker): Isetshenziselwa ukuvikela isifunda esinama-currents aphezulu (imvamisa enkulu kunama-ampere ayi-100) futhi ifanele izinto ezinkulu kanye nezinhlelo zokusabalalisa amandla.

I-RCBO (I-Leakage Circuit Breaker): Ihlanganisa ukuvikela okudlulele kanye nemisebenzi yokuvikela ukuvuza, futhi ingavikela ngesikhathi esisodwa isiyingi ekulayisheni ngokweqile, ukujikeleza okufushane nokuvuza.