Isingeniso kuMgomo Wokusebenza kanye Nokusetshenziswa kwe-MCB

Emikhakheni yobunjiniyela kagesi kanye nokuphepha,ama-miniature circuit breakers (ama-MCB)zidlala indima ebalulekile ekuvikeleni amasekethe ekulimaleni ngokweqile kanye ne-short-circuit. Njengengxenye ebalulekile yezinhlelo zikagesi zasemakhaya, zezentengiselwano, nezezimboni, ama-MCB aklanyelwe ukuxhuma amasekethe ngokuzenzakalelayo lapho ethola iphutha, ngaleyo ndlela avimbele izingozi ezingaba khona njengemililo kagesi kanye nomonakalo wemishini.

Kuyinii-miniature circuit breaker (MCB)?

I-miniature circuit breaker (MCB) iyi-circuit breaker esetshenziselwa ukuvikela amasekethe ekulimaleni komsinga ongaphezu kwamandla. Ngokungafani nama-fuse endabuko okumele ashintshwe ngemva kokuvunguza, ama-MCB angasethwa kabusha ngemva kokukhubeka, okwenza abe yisisombululo sokuvikela isekethe esilula nesisebenza kahle. Ama-MCB atholakala ngezincazelo zamanje ezahlukahlukene, ngokuvamile asukela ku-0.5A kuya ku-125A, futhi angasetshenziswa kabanzi ezinhlotsheni ezahlukene zokusebenza.

Iyini isimiso sokusebenza se-miniature circuit breaker (MCB)?

Ama-Miniature circuit breaker (ama-MCB) asebenza ngokuyinhloko ngokusekelwe ezindleleni ezimbili:ukukhubeka kokushisafuthiukukhubeka kukazibuthe. Ukugoba kokushisa kusingatha izimo zokulayisha ngokweqile. Kusebenzisa umucu we-bimetallic; lapho ugesi uphezulu kakhulu, umucu we-bimetallic uyagoba futhi uguquke, ekugcineni uphule ugesi. Ukugoba kukagesi kubamba izimo zomjikelezo omfushane. Kusebenzisa ugesi we-electromagnet; lapho ugesi ukhuphuka ngokuzumayo, ugesi we-electromagnet ukhiqiza insimu enamandla kagesi, uphule ugesi ngokushesha.

Le ndlela yokusebenza ekabili iqinisekisa ukuthi ama-miniature circuit breaker angavimbela ngokuthembekile ukugcwala ngokweqile kanye nama-short circuits, okwenza abe yingxenye ebalulekile yezinhlelo zikagesi zanamuhla.

Izinhlobo ze-Miniature Circuit Breakers

1. Uhlobo B Miniature Circuit Breaker: Lesi siphuli sesekethe sifanelekela ukusetshenziswa kwezindlu futhi senzelwe ukukhubeka ngokuphindwe kathathu kuya kahlanu kunogesi olinganisiwe. Silungele amasekethe anemithwalo yokumelana, njengokukhanya namasekethe okushisa.
2. Uhlobo C Miniature Circuit Breaker: Lolu hlobo lwe-circuit breaker lusetshenziswa kwezentengiselwano nasezimbonini futhi lufanelekela imithwalo yokungenisa efana nama-motor nama-transformer. Umzila wayo wokuhamba uphindwe kahlanu kuya kweyishumi kunomsinga olinganiselwe, futhi ungamelana nemisinga yokunyuka okufushane ngaphandle kokukhubeka.
3. Ama-Breaker Esifunda Amancane Ohlobo D: Ama-circuit breaker amancane ohlobo D aklanyelwe ukusetshenziswa kwemisebenzi enzima, anomsinga okhubekayo ophindwe ka-10 kuya ku-20 kunomsinga olinganiselwe. Avame ukusetshenziswa kuma-circuit ane-current ephezulu yokungena, njengezinjini ezinkulu.

Uyini umehluko phakathi kwe-MCB ne-MCCB?
Okokuqala, ama-MCB asetshenziswa kakhulu ekuvikeleni i-short-circuit kanye ne-overload kuma-currents aphansi (ngokuvamile ngaphansi kwama-amps ayi-100), kuyilapho ama-MCCB esetshenziswa kakhulu ekuvikeleni i-short-circuit kanye ne-overload kuma-currents aphezulu (ngokuvamile ngaphezu kwama-amps ayi-100). Lokhu kungenxa yemiklamo ehlukene yesakhiwo nezinto ezisetshenziswa kuma-MCB kanye nama-MCCB ukuze kuhlangatshezwane nama-currents ahlukene kanye nemithwalo. Okwesibili, ama-MCB ngokuvamile asebenzisa izingxenye ze-elekthronikhi njenge-relay kanye ne-thermal relay ukuze kuvikelwe, kuyilapho ama-MCCB esebenzisa amadivayisi emishini njengezivikeli ze-thermal-magnetic ukuze kuvikelwe.

Izinzuzo zokusebenzisa ama-miniature circuit breaker

Uma kuqhathaniswa nama-fuse endabuko, ama-miniature circuit breaker (ama-MCB) anikeza izinzuzo eziningi. Okokuqala, ama-MCB athembekile kakhulu futhi asabela ngokushesha emaphutheni kagesi. Ukuthi angasethwa kabusha ngemva kokukhubeka kunciphisa isidingo sokushintsha njalo, ngaleyo ndlela kunciphisa izindleko zokulungisa. Ngaphezu kwalokho, ama-MCB mancane futhi kulula ukuwafaka, okwenza abe ukukhetha okuthandwayo kwama-switchboard esimanje.

Ngaphezu kwalokho, ama-miniature circuit breaker (ama-MCB) athuthukisa ukuphepha ngokunciphisa ingozi yomlilo kagesi kanye nomonakalo wemishini. Ukwakheka kwawo kuwavumela ukuthi asebenze ngaphakathi kwebanga elithile lamapharamitha, ukuqinisekisa ukusebenza kahle kwezinhlelo zikagesi kanye nokugwema izingozi zokulayisha ngokweqile.

Kafushane

Ngamafuphi, ama-miniature circuit breaker (ama-MCB) ayizingxenye ezibalulekile zezinhlelo zikagesi, ahlinzeka ngokulayishwa ngokweqile okubalulekile kanye nokuvikelwa kwe-short-circuit. Kunezinhlobo eziningi zama-MCB ezitholakalayo ukuhlangabezana nezidingo zohlelo ezahlukahlukene, ezinikeza izinzuzo ezifana nokuthembeka okuphezulu, ukulula kokusetshenziswa, kanye nokuphepha okuphezulu. Ngokuthuthuka okuqhubekayo kwezinhlelo zikagesi, ukubaluleka kwama-MCB ekuqinisekiseni ukuphepha kwezindawo zokuhlala nezimboni akunakunganakwa. Kulabo abasebenza kwezobunjiniyela kagesi noma ukuphepha, ukuqonda imisebenzi nezinzuzo zama-MCB kubalulekile, njengoba kusiza ukuqinisekisa ukusebenza okubushelelezi nokuphephile kwezinhlelo zikagesi.