Yini eyenza i-MCCB ne-MCB ifane?

Ama-circuit breaker ayizingxenye ezibalulekile ezinhlelweni zikagesi ngoba ahlinzeka ngokuvikeleka ekujikelezeni okufushane kanye nezimo ezidlulayo. Izinhlobo ezimbili ezijwayelekile zama-breaker circuit ama-molded case circuit breaker (MCCB) kanye nama-circuit breaker amancane(MCB). Nakuba yakhelwe osayizi abahlukene besekethe namaza, womabili ama-MCCB nama-MCB asebenzela injongo ebalulekile yokuvikela amasistimu kagesi. Kule bhulogi, sizohlola ukufana nokubaluleka kwalezi zinhlobo ezimbili zama-circuit breaker.

Ukufana kokusebenza:

MCCB kanyeI-MCBzinokufana okuningi ekusebenzeni okuyisisekelo. Asebenza njengamaswishi, aphazamisa ukuhamba kukagesi uma kwenzeka iphutha likagesi. Zombili izinhlobo ze-circuit breaker zenzelwe ukuvikela amasistimu kagesi ekulayishweni ngokweqile kanye namasekethe amafushane.

Ukuvikelwa kwesekethe emfushane:

Amasekhethi amafushane abeka izingozi ezinkulu ezinhlelweni zikagesi. Lokhu kwenzeka lapho ukuxhumana okungalindelekile kwenzeka phakathi kwamakhondakta amabili, okubangela ukuqubuka okungazelelwe kwamandla kagesi. Ama-MCCB kanye nama-MCB ahlome ngendlela yohambo ezwa amandla angaphezu kwamandla, ephula isekethe futhi ivimbele noma yimuphi umonakalo ongaba khona noma ingozi yomlilo.

Ukuvikelwa kwamanje:

Ezinhlelweni zikagesi, izimo ze-overcurrent zingenzeka ngenxa yokushabalaliswa kwamandla amaningi noma ukulayishwa ngokweqile. I-MCCB ne-MCB zibhekana ngokuphumelelayo nezimo ezinjalo ngokunqamula isekethe ngokuzenzakalelayo. Lokhu kuvimbela noma yikuphi ukulimala kwempahla kagesi futhi kusiza ukugcina ukuzinza kwesistimu yamandla.

Izilinganiso zamandla kagesi nezamanje:

I-MCCB ne-MCB ziyahluka ngosayizi wesekethe kanye nesilinganiso samanje esisebenzayo. Ama-MCCB ajwayele ukusetshenziswa kumasekhethi amakhulu noma amasekhethi anamaza aphakeme, ngokuvamile asukela ku-10 kuye ezinkulungwaneni zama-amps. Ngakolunye uhlangothi, ama-MCB afaneleka kakhulu kumasekethe amancane, ahlinzeka ngokuvikelwa ebangeni elingama-amps angu-0.5 kuya kwangu-125. Kubalulekile ukukhetha uhlobo olufanele lwe-circuit breaker ngokusekelwe ezidingweni zomthwalo kagesi ukuze kuqinisekiswe ukuvikelwa okuphumelelayo.

Indlela yohambo:

Kokubili i-MCCB ne-MCB zisebenzisa izindlela zokuthi ugibele ukuze ziphendule ezimweni zamanje ezingavamile. Indlela yokukhubeka ku-MCCB ivamise ukuba yi-thermal-magnetic tripping mechanism ehlanganisa izinto ezishisayo nezikazibuthe. Lokhu kubenza bakwazi ukusabela ekulayisheni ngokweqile nezimo zesifunda esifushane. Ngakolunye uhlangothi, ama-MCBs, ngokuvamile anendlela yokwehla eshisayo esabela ngokuyinhloko ezimweni zokugcwala kakhulu. Amanye amamodeli e-MCB athuthukisiwe aphinde afake amadivaysi e-elekthronikhi wokukhubeka ukuze agibele ngokuqondile nangokukhetha.

Iphephile futhi inokwethenjelwa:

I-MCCB ne-MCB zidlala indima ebalulekile ekuqinisekiseni ukuphepha nokwethembeka kwezinhlelo zikagesi. Ngaphandle kwalezi zigebengu zesekethe, ingozi yokushiswa kukagesi, ukulimala kwemishini, kanye nokulimala okungaba khona kubantu ngabanye kuyanda kakhulu. Ama-MCCB nama-MCB afaka isandla ekusebenzeni okuphephile kokufakwa kukagesi ngokuvula ngokushesha isekethe lapho kutholwa iphutha.