Njengebhizinisi elimele kakhulu eWenzhou, i-YUANKY inomlando omude wentuthuko kanye nochungechunge oluphelele lwezimboni. Imikhiqizo yethu nayo iyancintisana kakhulu emakethe.MCB.

I-MCB (i-Miniature Circuit Breaker, i-small circuit breaker) ingenye yamadivayisi okuvikela ama-terminal asetshenziswa kakhulu ezinhlelweni zokusabalalisa ezinama-voltage aphansi. Ngezinzuzo ezifana nosayizi omncane, ukusebenza okulula kanye nokuvikelwa okunembile, isetshenziswa kabanzi emigqeni yokusabalalisa yezakhiwo zezimboni, zezentengiselwano kanye nezomphakathi, yenza imisebenzi eyinhloko efana nokugcwala kwesekethe kanye nokuvikelwa kwesekethe esifushane. Okulandelayo ukuhlaziywa okuningiliziwe kwezici zayo zokusebenza ezivela ezicini eziningi ezifana nemisebenzi eyinhloko, izici zobuchwepheshe, kanye nezici zohlelo lokusebenza.

I. Umsebenzi Wokuvikela Okuyinhloko: Qinisekisa ukusebenza okuphephile kwesekethe

Inani eliyinhloko le-MCB lisekuvikeleni ukuphepha kwemigqa yokusabalalisa kanye nemishini kagesi. Umsebenzi wayo wokuvikela ufezwa kakhulu ngezindlela zokusebenza eziqondile, ikakhulukazi okuhlanganisa izinhlobo ezimbili ezilandelayo zokuvikela okuyinhloko:

1. Umsebenzi wokuvikela ngokweqile

Uma isekethe isebenza ngokujwayelekile, ugesi ungaphakathi kwebanga elilinganiselwe. Kodwa-ke, uma kunamadivayisi kagesi amaningi kakhulu noma isekethe igcwele ngokweqile isikhathi eside, ugesi olayini uzodlula inani elilinganiselwe, okubangela ukuthi izintambo zishise. Uma ugcwele ngokweqile isikhathi eside, kungabangela ukuguga kokushisa, amasekethe amafushane ngisho nemililo. Ukuvikelwa kokushisa ngokweqile kwe-MCB kufezwa ngedivayisi yokushisa ye-bimetallic strip: lapho ugesi udlula inani elilinganiselwe, ugesi we-bimetallic uyagoba futhi uguquke ngenxa yokushisa okukhiqizwa ugesi, okwenza indlela yokugibela isebenze, okubangela ukuthi oxhumana nabo be-circuit breaker bavuleke futhi banqume ugesi.

Ukuvikelwa kwayo kokulayisha ngokweqile kunesici sesikhathi esiphambene, okungukuthi, uma ugesi wokulayisha ngokweqile umkhulu, isikhathi sesenzo sifushane. Isibonelo, uma ugesi wokulayisha ngokweqile uphindwe ka-1.3 kunogesi wokulinganisa, isikhathi sokusebenza singase sithathe amahora amaningana. Uma ugesi wokulayisha ufinyelela izikhathi eziyisithupha kunogesi wokulinganisa, isikhathi sesenzo singafinyezwa sibe phakathi kwemizuzwana embalwa. Lokhu akugcini nje ngokugwema ukukhubeka okungadingekile okubangelwa ukulayisha ngokweqile okuncane kwesikhathi esifushane kodwa futhi kunqamula ngokushesha isekethe uma kwenzeka ugesi wokulayisha ngokweqile okukhulu, kufezwe isivikelo esiguquguqukayo nesithembekile.

2. Umsebenzi wokuvikela we-short-circuit

I-short circuit ingenye yamaphutha ayingozi kakhulu kumasekethe, ngokuvamile abangelwa ukulimala kokufakwa kwezintambo noma amaphutha angaphakathi kwemishini. Ngalesi sikhathi, ugesi ukhuphuka ngokushesha (mhlawumbe ufinyelela amashumi noma ngisho namakhulu ezikhathi zamanje ezilinganisiwe), futhi amandla kagesi amakhulu nokushisa okukhiqizwayo kungashisa izintambo nemishini ngokushesha, futhi kubangele ngisho nemililo noma izingozi zokushaqeka kukagesi. Ukuvikelwa kwe-short-circuit ye-MCB kufezwa ngedivayisi yokuhamba nge-electromagnetic: lapho ugesi we-short-circuit udlula kukhoyili yedivayisi yokuhamba nge-electromagnetic, kukhiqizwa amandla anamandla kagesi, adonsela i-armature ukuthi ishaye indlela yokuhamba, okwenza oxhumana nabo bavuleke ngokushesha futhi banqume ugesi.

Isikhathi sokusebenza sokuvikela i-short-circuit sifushane kakhulu, ngokuvamile singakapheli imizuzwana engu-0.1. Kungahlukanisa ngokushesha indawo yephutha ngaphambi kokuba i-fault yande, kuncishiswe umonakalo we-short-circuit emugqeni nasemishinini, futhi kuvikelwe ukuphepha komuntu siqu kanye nempahla.

II. Izici Zobuchwepheshe: Kuqondile, kuzinzile futhi kuthembekile

1. Ukunemba okuphezulu ekunyakazeni

Amanani esenzo sokuvikela e-MCB aklanywe ngokuqinile futhi alinganiswa ukuze kuqinisekiswe ukusebenza okunembile ngaphakathi kobubanzi bamanje obucacisiwe. Inani lokusetha lamanje lokuvikela kwayo ngokweqile (njengokungasebenzi ngokuphindwe ka-1.05 kunogesi olinganisiwe futhi kusebenza ngaphakathi kwesikhathi esivunyelwene ngaso ngokuphindwe ka-1.3 kunogesi olinganisiwe) kanye nogesi osebenzayo omncane wokuvikela i-short-circuit (ngokuvamile ngokuphindwe ka-5 kuya ku-10 kunogesi olinganisiwe) kokubili kuhambisana nezindinganiso zomhlaba wonke (njenge-IEC 60898) kanye nezindinganiso zikazwelonke (njenge-GB 10963). Ngesikhathi senqubo yokukhiqiza, i-MCB ngayinye kumele ihlolwe ngokuqinile ukuqinisekisa ukuthi iphutha lesikhathi sesenzo ngaphansi kwezimo zamanje ezahlukene lilawulwa ngaphakathi kobubanzi obuvunyelwe, kugwenywe "ukwehluleka ukusebenza" (ukungakhubeki ngesikhathi samaphutha) noma "ukusebenza okungamanga" (ukukhubeka ngesikhathi sokusebenza okuvamile).

2. Ukuphila isikhathi eside kwemishini kanye nogesi

I-MCB idinga ukubekezelela njalo imisebenzi yokuvala nokuvula kanye nemiphumela yamanje, ngaleyo ndlela inezidingo eziqinile zempilo yemishini nekagesi. Impilo yemishini ibhekisela enanini lezikhathi lapho i-circuit breaker isebenza khona esimweni sokungabi namanje. Impilo yemishini ye-MCB esezingeni eliphezulu ingafinyelela izikhathi ezingaphezu kuka-10,000. Impilo kagesi ibhekisela enanini lezikhathi esebenza ngaphansi komthwalo kumandla kagesi alinganisiwe, ngokuvamile angabi ngaphansi kwezikhathi ezingu-2,000. Izingxenye zayo zangaphakathi eziyinhloko (ezifana nokuxhumana, izindlela zokukhubeka, kanye neziphethu) zenziwe ngezinto ezinamandla aphezulu (ezifana nokuxhumana kwe-silver alloy kanye nezingxenye eziqhuba ithusi le-phosphor), futhi ngokusebenzisa amasu okucubungula anembile kanye nokwelashwa kokushisa, ukumelana kwazo nokuguguleka, ukumelana nokugqwala, kanye nokumelana nokukhathala kuyathuthukiswa ukuqinisekisa ukusebenza okuzinzile ngisho nangemva kokusetshenziswa isikhathi eside.

3. Umthamo wokuphuka uhambisana nezidingo zesimo

Umthamo wokuphuka ubhekisela enanini lamanje le-short-circuit eliphezulu kakhulu i-MCB engaliphula ngokuphephile ngaphansi kwezimo ezithile, futhi luyisibonakaliso esiyinhloko sokulinganisa ikhono layo lokuvikela i-short-circuit. Kuye ngezimo zohlelo lokusebenza, ikhono lokuphuka le-MCB lingahlukaniswa ngamazinga amaningi, njenge:

Ezimweni zomphakathi, i-MCBS enamandla okuqeda i-6kA noma i-10kA ivame ukusetshenziswa, okungaphatha amaphutha okujikeleza okufushane emakhaya noma ezindaweni ezincane zezentengiselwano.

Ezimweni zezimboni, ama-MCBS anamakhono aphezulu okuphula (njenge-15kA kanye ne-25kA) kudingeka ukuthi azivumelanise nezimo ezinemishini exinene kanye nemisinga emikhulu ye-short-circuit.

Ukuqashelwa komthamo wokuphuka kuncike ohlelweni lokucima i-arc oluthuthukisiwe (njengegumbi lokucima i-arc yegridi). Ngesikhathi sokuphumula kwe-short-circuit, i-arc ifakwa ngokushesha ekamelweni lokucima i-arc, futhi i-arc ihlukaniswe ngama-arc amafushane amaningi ngokusebenzisa ama-grid ensimbi, kunciphisa i-voltage ye-arc futhi kusheshe kucime i-arc ukuvimbela umonakalo esakhiweni sangaphakathi se-circuit breaker ngenxa yokushisa okuphezulu kwe-arc.

Iii. Izici Zesakhiwo Nokusebenza: Ukunciphisa i-aturation kanye nokulula

Incane ngosayizi futhi kulula ukuyifaka

I-MCB isebenzisa umklamo we-modular, incane ngobukhulu (ngokuvamile enamamojula ajwayelekile njengobubanzi obungu-18mm noma 36mm), futhi ingafakwa ngqo emigqeni yamabhokisi okusabalalisa ajwayelekile noma amakhabethe okusabalalisa, okusindisa isikhala sokufaka. Isakhiwo sayo esincane senza kube nokuvikelwa okuzimele kwamasekethe amaningi ngaphakathi kwesikhala sokusabalalisa amandla esilinganiselwe. Isibonelo, ebhokisini lokusabalalisa lasekhaya, ama-MCBS amaningi angasetshenziswa ukulawula amasekethe ahlukene njengokukhanyisa, amasokhethi, nama-air conditioner ngokulandelana, kufezwe ukuvikelwa nokuphathwa okuhlukile, okulula ukuthola amaphutha nokulawula ukusetshenziswa kwamandla.

2. Kulula ukuyisebenzisa futhi kulula ukuyinakekela

Indlela yokusebenza ye-MCB yakhelwe ngendlela yomuntu. Imisebenzi yokuvala ("ON" position) kanye nesikhundla sokuvula ("OFF") itholakala ngesibambo. Isimo sesibambo sibonakala ngokucacile, okuvumela ukwahlulela okunembile kwesimo sokusebenza kwesekethe. Ngemuva kwephutha le-TRIP, isibambo sizoba sendaweni ephakathi ("TRIP" position), okwenza kube lula kubasebenzisi ukuhlonza ngokushesha isekethe enephutha. Uma usetha kabusha, mane uhambise isibambo endaweni ethi "OFF" bese usisunduzela endaweni ethi "ON". Azikho amathuluzi ochwepheshe adingekayo futhi ukusebenza kulula. Ekulungiseni kwansuku zonke, i-MCB ayidingi ukulungisa noma ukuhlola okuyinkimbinkimbi. Idinga ukuhlolwa okuvamile kuphela ukuqinisekisa ukuthi ukubukeka kuphelele nokuthi ukusebenza kubushelelezi, okuholela ezindleleni zokulungisa eziphansi.

3. Ukusebenza kahle kakhulu kokuvikela

Ukuqinisekisa ukuphepha kukagesi, i-casing kanye nezingxenye zokuvikela zangaphakathi ze-MCB zenziwe ngezinto zokuvikela ezivikela ugesi ezinamandla aphezulu kanye nokushisa okuphezulu (njengepulasitiki ye-thermosetting kanye ne-ABS evimbela ilangabi), enokumelana nokuvikela okungu-≥100MΩ, ekwazi ukumelana nokuhlolwa kokumelana nogesi ongu-2500V AC (akukho ukuphuka noma ukukhanya kungakapheli umzuzu owodwa). Isengagcina ukusebenza kahle kokuvikela ugesi ezindaweni ezinzima njengomswakama nothuli, ivimbele ukuvuza noma izifunda ezimfushane zesigaba kuya kwesigaba, futhi iqinisekise ukuphepha kwabasebenzi kanye nemishini.

Iv. Imisebenzi Eyandisiwe Nokuzivumelanisa Nezimo: Ukuhlangabezana Nezidingo Ezihlukahlukene

1. Hlukanisa izinhlobo ezithathwe

Ngaphezu kokuvikelwa okuyisisekelo kokulayishwa ngokweqile kanye nokuvikelwa kwe-short-circuit, i-MCB ingahlangabezana nezidingo zezimo ezahlukene ngokwandiswa kokusebenza. Izinhlobo ezivamile ze-derivative zifaka:

- I-MCB enokuvikelwa kokuvuza (RCBO): Ihlanganisa imodyuli yokuthola ukuvuza ngokusekelwe ku-MCB evamile. Uma ukuvuza kwenzeka kusekethe (ugesi osele udlula u-30mA), ingakhubeka ngokushesha ukuze ivimbele izingozi zokushaqeka kukagesi futhi isetshenziswa kabanzi kumasekethe esokhethi asekhaya.

- I-MCB enokuvikelwa kwe-overvoltage/undervoltage: Ikhubeka ngokuzenzakalelayo lapho i-grid voltage iphezulu kakhulu noma iphansi kakhulu ukuvikela izinto ezibucayi njengeziqandisi nama-air conditioner emonakalweni obangelwa ukushintshashintsha kwe-voltage.

- I-MCB yamanje elinganiselwe elungisekayo: Lungisa inani lamanje elilinganiselwe ngenkinobho, elifanele izimo lapho i-load current idinga ukulungiswa ngokuguquguqukayo.

2. Ukuzivumelanisa nezimo okuqinile kwemvelo

I-MCB ingasebenza ngokuzinzile ngaphansi kwezimo eziningi zemvelo, ngokuvamile isebenza ngaphakathi kwezinga lokushisa eliphakathi kuka--5℃ no-40℃ (amamodeli akhethekile angandiswa abe ngu--25℃ kuya ku-70℃), enomswakama olinganiselwe ongu-≤95% (akukho ukuminyana), futhi ingazivumelanisa nezimo zezulu zezifunda ezahlukene. Okwamanje, isakhiwo sayo sangaphakathi sinekhono elithile lokumelana nokudlidliza nokushaqeka, futhi singasebenza ngokuthembekile ezindaweni zezimboni noma ezimotweni zokuthutha (njengemikhumbi nezimoto zokuzijabulisa) ngokudlidliza okuncane.

Umehluko kusuka kwamanye ama-circuit breaker:

I-MCB (I-Miniature Circuit Breaker): Isetshenziswa kakhulu ekuvikeleni isekethe ngogesi ophansi (ngokuvamile ngaphansi kwama-ampere ayi-100).

I-MCCB (Molded Case Circuit Breaker): Isetshenziselwa ukuvikela isekethe eneziphethu eziphezulu (ngokuvamile ezingaphezu kwama-ampere ayi-100) futhi ifanele imishini emikhulu kanye nezinhlelo zokusabalalisa ugesi.

I-RCBO (I-Leakage Circuit Breaker): Ihlanganisa imisebenzi yokuvikela ukuvuza ngokweqile kanye nokuvikela ukuvuza, futhi ingavikela isekethe ngesikhathi esisodwa ekugcwaleni ngokweqile, isekethe esifushane kanye nokuvuza.