Uyini umsebenzi we-circuit breaker, isimiso sokusebenza se-circuit breaker yincazelo enemininingwane
Uma uhlelo lwehluleka, isenzo sokuvikela sesici esinephutha kanye nokwehluleka kokusebenza kwe-circuit breaker kuyenqaba ukuhamba, hambisa i-circuit breaker yesiteshi esingaphansi ngokuvikela isici esinephutha, futhi isiteshi singasetshenziswa ukwenza izintambo ze. uhambo lwe-distal circuit breaker ngesikhathi esifanayo lubizwa ngokuthi ukuvikela ukwehluleka kwe-circuit breaker.
Ngokuvamile, ngemva kwesenzo sezingxenye zamanje zesigaba, amaqembu amabili okuqala amaphoyinti okuxhumana ayaphuma, futhi izindawo zokuxhumana zokuvikela isenzo sangaphandle zixhunywe ochungechungeni lwesekethe, isixhumanisi sebhasi noma ukwehluleka kwesegimenti ye-segment breaker ukuqalisa ukuvikela ukwehluleka.
Iyini imisebenzi yama-circuit breakers
Ama-Circuit breaker asetshenziswa kakhulu kumamotho ajwayelekile kanye nama-transformer umthamo omkhulu kanye neziteshi ezingaphansi. I-Circuit breaker inomsebenzi wokuhlukanisa umthwalo wengozi, futhi isebenzisana nokuvikela okuhlukahlukene kokudlulisela ukuvikela izinto zikagesi noma izintambo.
I-Circuit breaker ngokuvamile isetshenziswa ekukhanyeni kwe-voltage ephansi, ingxenye yamandla, ingadlala indima yokusika ngokuzenzakalelayo isifunda; i-circuit breaker kanye nokulayisha ngokweqile kanye nokuvikelwa kwesifunda esifushane kanye neminye imisebenzi eminingi, kodwa inkinga yomthwalo ophansi idinga ukulungiswa iswishi yokunqamula idlala indima yokuhlukanisa kagesi, futhi ibanga le-creepage le-circuit breaker alanele.
Manje sekukhona i-circuit breaker enomsebenzi wokuzihlukanisa, okuyi-breaker circuit evamile kanye nomsebenzi wokuxhuma kabili kokukodwa. I-circuit breaker enomsebenzi wokuhlukanisa ingase ibe isinqamuli somzimba. Eqinisweni, ukushintshwa kwesixhumi ngokuvamile akusebenzi ngomthwalo, kuyilapho i-breaker circuit inomjikelezo omfushane, ukuvikela ukulayisha ngokweqile, ukucindezela ngaphansi kwengcindezi kanye neminye imisebenzi yokuvikela.
Isimiso sokusebenza se-circuit breaker sinemininingwane
Uhlobo oluyisisekelo: Idivayisi elula yokuvikela isekethe i-fuse. I-fuse iyintambo encane kakhulu, enekesi elivikelayo bese ixhunywe kumjikelezo. Ngemuva kokuthi isifunda sivaliwe, yonke imisinga kufanele igeleze ku-current ku-fuse -- fuse njenge-current efanayo kwamanye amaphuzu kumjikelezo ofanayo. I-fuse iklanywe ngendlela yokuthi ikwazi ukuhlangana lapho izinga lokushisa lifinyelela izinga elithile. Ukubhoboza i-fuse kungabangela imigwaqo evulekile ukuze kuvinjwe amandla amaningi ekulimazeni izintambo zendlu. Inkinga ngefuse ukuthi ingasebenza kanye kuphela. Noma nini lapho i-fuse ishiswa, kufanele ishintshwe. Ama-circuit breaker angenza indima efanayo nama-fuse, kodwa angasetshenziswa ngokuphindaphindiwe. Ngokushesha lapho i-current ifinyelela ezingeni eliyingozi, ibangela ngokushesha isifunda esivulekile.
Isimiso esiyisisekelo sokusebenza: intambo yomlilo kumjikelezo ixhunywe kuzo zombili iziphetho zokushintshwa. Lapho iswishi ibekwe endaweni, i-current igeleza iphuma kutheminali engezansi, ilandelana ngomzimba ka-electromagnetic, othintana nabo beselula, abathintwayo abanganyakazi, futhi ekugcineni isuke kutheminali ephezulu. I-current ingakwazi ukudonsa uzibuthe we-electromagnetic. Amandla kazibuthe akhiqizwa uzibuthe we-electromagnetic ayanda namanje, futhi uma okwamanje kuncipha. Lapho okwamanje kugxumela ezingeni eliyingozi, umuzwa we-EM ukhiqiza amandla kazibuthe amakhulu ngokwanele ukudonsa induku yensimbi exhunywe ekuxhumekeni kweswishi. Lokhu kubangela ukuthi i-contactor ehambayo inyakaze futhi ishiye i-contactor emile, bese inqamula isifunda. Umsinga kagesi nawo uphazamisekile. Ibha ye-bimetal iklanyelwe ngokusekelwe esimisweni esifanayo, umehluko wukuthi asikho isidingo sokunikeza amandla omzimba we-electromagnetic lapha, kodwa ivumela ibha yensimbi ukuthi igobe ngesikhathi esiphezulu, bese uqala idivayisi yokuxhumanisa. Amanye ama-circuit breaker nawo agcwalisa iziqhumane ukuhambisa iswishi. Lapho i-current idlula izinga elithile, ithungela into eqhumayo bese ishayela ipiston ukuvula iswishi.
Amamodeli athuthukisiwe: Ama-circuit breaker athuthuke kakhulu ashiya izinto zikagesi ezilula futhi esikhundleni salokho asebenzise amadivaysi kagesi (ama-semiconductor) ukuze aqaphe amazinga amanje. I-Ground fault circuit breaker (GFCI) wuhlobo olusha lwe-circuit breaker. Lesi siphuzo sesifunda asikwazi nje ukuvimbela ukulimala kwe-wiring yendlu, kodwa futhi sivikele abantu ekushayweni kukagesi.
Umsebenzi othuthukisiwe: I-GFCI ihlale iqapha okwamanje kuqanda kanye nemigqa yomlilo kusekethe. Uma yonke into ijwayelekile, okwamanje kuyo yomibili imigqa kufanele ifane ncamashi. Uma ulayini womlilo ususekelwe ngokuqondile (ngokwesibonelo, othile uthinte ulayini womlilo ngephutha), i-current on the fire line ngokuzumayo iyanda, kuyilapho ulayini we-zero ungashintshi. I-GFCI inqamula isekethe ngokushesha ngemva kokuthola lesi simo ukuze ivikele abalimele ngenxa yokushaqeka kukagesi. Ngenxa yokuthi i-GFCI ingathatha isinyathelo ngaphandle kokulinda kuze kube yilapho okwamanje kukhuphukela ezingeni eliyingozi, isabela ngokushesha kakhulu kunezinqamuli zesekethe ezivamile.
Isikhathi sokuthumela: Aug-24-2022
