Umsebenzi kanye nokukhethwa kwama-miniature circuit breakers (ama-MCB)

Qonda indima yeama-miniature circuit breakers (ama-MCB)ezinhlelweni zikagesi

Ama-Miniature circuit breaker (ama-MCB) ayizingxenye ezibalulekile ezinhlelweni zikagesi zesimanje, ahlinzeka ngokuvikelwa okubalulekile ekuthwaleni ngokweqile kanye nama-short circuits. Njengoba isidingo semishini kagesi ethembekile nephephile siqhubeka nokukhula, ukuqonda umsebenzi kanye nokubaluleka kwama-MCB kuya ngokuya kubaluleka kochwepheshe kanye nabasebenzisi basekhaya ngokufanayo.

Kuyini i-MCB?

I-miniature circuit breaker (MCB) iyidivayisi ye-electromechanical eyenzelwe ukuvula isekethe ngokuzenzakalelayo lapho kutholwa isimo sephutha, njengokugcwala ngokweqile noma isekethe esifushane. Ngokungafani nama-fuse endabuko, okumele ashintshwe ngemva kokuba eqhumile, ama-MCB angasethwa kabusha ngemva kokuba ekhubekile, okwenza abe ukukhetha okulula futhi okuphumelelayo kokuvikela isekethe.

Indlela i-MCB esebenza ngayo

Isimiso sokusebenza se-miniature circuit breaker (MCB) sisekelwe kakhulu ezicini ezimbili: ukuvikelwa kokushisa kanye nokuvikelwa kukazibuthe. Indlela yokuvikela ukushisa isetshenziselwa ukusingatha izimo zokulayisha ngokweqile, okungukuthi, ugesi udlula umthamo olinganisiwe wesekethe. Ugesi olayisha ngokweqile ukhiqiza ukushisa, okubangela ukuthi i-bimetallic strip ngaphakathi kwe-miniature circuit breaker igobe, ekugcineni kubangele ukuthi isekethe ikhubeke.

Ngakolunye uhlangothi, amadivayisi kazibuthe aklanyelwe ukusingatha amasekethe amafushane, okuyizikhukhula ezisheshayo zamandla kagesi. Kulokhu, insimu kazibuthe edalwe amandla amakhulu idonsa i-lever, cishe ngokushesha iphule isekethe futhi ivimbele umonakalo ongaba khona ohlelweni lukagesi.

Izinhlobo ze-Miniature Circuit Breakers

Kunezinhlobo eziningi ezahlukene zama-miniature circuit breaker, afanele ukusetshenziswa okuhlukile. Izinhlobo ezivame kakhulu zifaka:

1. Uhlobo B lwe-MCB: Lolu hlobo lwe-circuit breaker lwenzelwe ukukhubeka phakathi kokuphindwe kathathu kuya kahlanu kunogesi olinganiselwe futhi luvame ukusetshenziswa ezindaweni zokuhlala lapho umthwalo unamandla kakhulu.

2. Uhlobo C lwe-MCB: Lawa ma-circuit breaker anomsinga wokugoba ophindwe ka-5 kuya ku-10 kunomsinga olinganiselwe futhi afanele ukusetshenziswa kwezentengiselwano nezimboni lapho kukhona khona imithwalo yokungenisa efana nama-motor.

3. Ama-circuit breaker amancane ohlobo D: Lawa ma-circuit breaker aklanyelwe ama-current currents aphezulu futhi angakhubeka kuma-currents afinyelela izikhathi eziyi-10 kuya kwezingama-20 kunama-current current alinganiselwe. Ngokuvamile asetshenziselwa ama-motor amakhulu noma ama-transformer.

Izinzuzo zokusebenzisa i-MCB

Ama-Miniature circuit breaker (ama-MCB) anikeza izinzuzo eziningana ngaphezu kwama-fuse avamile. Okokuqala, ama-MCB anesikhathi sokuphendula esisheshayo, okubalulekile ekuvimbeleni umonakalo kumishini nokunciphisa ingozi yomlilo. Okwesibili, indlela yawo yokusetha kabusha isho ukuthi abasebenzisi bangabuyisa amandla ngokushesha ngaphandle kokushintsha izingxenye. Ama-MCB nawo mancane futhi kulula ukuwafaka, okwenza abe ukukhetha okuthandwayo kwama-switchboard esimanje.

Ukufakwa Nokunakekelwa

Ukufakwa nokugcinwa kahle kwama-miniature circuit breaker (ama-MCB) kubalulekile ukuqinisekisa ukusebenza kwawo kahle. Khetha uhlobo lwe-MCB olufanele kanye nesilinganiso sohlelo lokusebenza ukuze ugweme ukukhubeka noma ukuvikelwa okunganele. Ukuhlolwa okuvamile kufanele kwenziwe ukuqinisekisa ukuthi i-MCB isebenza kahle futhi ayikhombisi zimpawu zokuguguleka noma ukulimala.

Kafushane

Ngamafuphi, ama-miniature circuit breaker (ama-MCB) adlala indima ebalulekile ekuvikeleni izinhlelo zikagesi ekugcwaleni ngokweqile kanye nama-short circuits. Amandla awo okunikeza isivikelo esithembekile, kanye nokulula kwawo ukusetshenziswa kanye nesimo sokuphinde kusetshenziswe, kuwenza abe yingxenye ebalulekile ekufakweni kukagesi kwezindlu nezentengiselwano. Njengoba ubuchwepheshe buqhubeka buthuthuka, ukubaluleka kwama-MCB ekuqinisekiseni ukuphepha kukagesi kuzokhula kuphela, okwenza kube kubalulekile ukuthi wonke umuntu aqonde izici nezinzuzo zawo. Kungakhathaliseki ukuthi ungumnikazi wendlu ofuna ukuthuthukisa ukuphepha kukagesi, noma uchwepheshe kulo mkhakha, ukuqonda ama-MCB kubalulekile ezweni likagesi lanamuhla.