UkuqondaAma-RCCB nama-MCBIzingxenye Ezibalulekile Zokuphepha Kukagesi
Ezweni lokufakwa kukagesi, ukuphepha kubaluleke kakhulu. Amadivayisi amabili abalulekile adlala indima ebalulekile ekuqinisekiseni ukuphepha kukagesi ama-residual current circuit breakers (RCCBs) nama-miniature circuit breakers (MCBs). Nakuba womabili asetshenziselwa ukuvikela ama-electric circuit, asebenza ngendlela ehlukile futhi aklanyelwe izinjongo ezahlukene. Lesi sihloko sibheka ngokujulile imisebenzi, umehluko, kanye nokusetshenziswa kwama-RCCB nama-MCB, siqokomisa ukubaluleka kwawo ezinhlelweni zikagesi zanamuhla.
Kuyini i-RCCB?
I-RCCB (Residual Current Circuit Breaker) iyithuluzi lokuphepha elibona ukungalingani kwamandla kagesi. Yakhelwe ukuvimbela ukushaqeka kukagesi nokunciphisa ingozi yemililo kagesi ebangelwa amaphutha omhlaba. I-RCCB iqapha njalo amandla kagesi ageleza ngezintambo ezishisayo nezingathathi hlangothi zesekethe. Uma ibona umehluko kumandla kagesi (okubonisa ukuthi amanye amandla kagesi ayavuza emhlabathini), iyakhubeka futhi ivule isekethe zingakapheli ama-millisecond. Lokhu kusabela okusheshayo kubalulekile ukuvikela abantu ekushaqekeni kukagesi nokuvimbela izingozi ezingaba khona.
Ama-RCCB avame ukukalwa ngama-milliamperes (mA) futhi atholakala ngamazinga ahlukahlukene okuzwela, njenge-30mA yokuzivikela komuntu siqu kanye ne-100mA noma i-300mA yokuvikela umlilo. Avame ukusetshenziswa ezindaweni zokuhlala, zezentengiselwano kanye nezezimboni, ikakhulukazi lapho kukhona amanzi, njengezindlu zangasese namakhishi.
Kuyini i-MCB?
Ngakolunye uhlangothi, ama-MCB (ama-miniature circuit breakers) aklanyelwe ukuvikela amasekethe ekugcwaleni ngokweqile kanye namasekethe amafushane. Ngokungafani nama-RCCB, agxile ekutholeni amaphutha omhlaba, ama-MCB aqapha ugesi ogeleza ngesekethe. Uma ugesi udlula umthamo olinganiselwe we-MCB, uzokhubeka futhi unqamule isekethe ukuze kuvinjelwe ukushisa ngokweqile kanye nezingozi zomlilo ezingaba khona.
Ama-MCB alinganiswa ngama-ampere (A) futhi eza ngezinhlobo ezahlukene, okuhlanganisa Uhlobo B, Uhlobo C, kanye nohlobo D, okwenzelwe ukukhubeka emazingeni ahlukene wamanje. Uhlobo B lufanelekela ukusetshenziswa kwezindawo zokuhlala, kuyilapho Uhlobo C kanye nohlobo D kusetshenziswa ezindaweni zezentengiselwano nezimboni lapho kulindeleke khona ukugeleza okuphezulu komoya.
Umehluko omkhulu phakathi kwe-RCCB ne-MCB
Nakuba ama-RCCB nama-MCB womabili ebalulekile ekuphepheni kukagesi, anemisebenzi ehlukene:
1. Umsebenzi: I-RCCB isetshenziselwa ukuvikela ekulimaleni komhlaba kanye nokushaqeka kukagesi kanti i-MCB isetshenziselwa ukuvikela ekucindezelekeni ngokweqile kanye nokujikeleza okufushane.
2. Indlela Yokuthola: I-RCCB ithola ukungalingani phakathi kwemisinga ephilayo nengathathi hlangothi kuyilapho i-MCB iqapha umsinga ophelele ogeleza ngesekethe.
3. Ukusetshenziswa: I-RCCB ibalulekile ezindaweni lapho ingozi yokushaqeka kukagesi iphezulu khona, kanti i-MCB isetshenziselwa ukuvikela amasekethe kumandla kagesi amaningi.
4. Ukuzwela: Ama-RCCB azwela ukuvuza okuncane kwamandla kagesi, kanti ama-MCB aklanyelwe ukusingatha amazinga aphezulu wamandla kagesi ngaphambi kokukhubeka.
Ukubaluleka kokusebenzisa kokubili i-RCCB kanye ne-MCB
Ukuze uthole ukuphepha okuphezulu kukagesi, kunconywa ukusebenzisa kokubili i-RCCB kanye ne-MCB. Le nhlanganisela inikeza ukuvikelwa okuphelele kwephutha lomhlaba kanye nokweqisa ngokweqile. Ekufakweni kukagesi okuvamile, i-RCCB ingafakwa ebhodini lokushintsha eliyinhloko ukuze ivikele wonke amasekethe, kuyilapho i-MCB ehlukile ingasetshenziswa kwisekethe ngayinye ukuvikela ekugqitshweni ngokweqile.
Ngamafuphi, ukuqonda indima yama-RCCB nama-MCB kubalulekile kunoma ubani ohilelekile ekufakweni noma ekulungisweni kukagesi. Ngokufaka womabili la madivayisi ezinhlelweni zikagesi, singathuthukisa kakhulu ukuphepha, sivikele izimpilo, futhi sivimbele umonakalo wempahla. Njengoba ubuchwepheshe buthuthuka, ukubaluleka kwala madivayisi kuzoqhubeka nokukhula, okwenza abe yingxenye ebalulekile yokuphepha kukagesi kwanamuhla.
Isikhathi sokuthunyelwe: Jan-08-2025