Ukuqonda ama-MCB (BASCRECK EZIQHAWULEKILEYO) - INDLELA EYOBENZA NGAYO UKUZE BABUZA UKUTHENGA UKUPHEPHA

Emhlabeni wezinhlelo zikagesi kanye nemibuthano, ukuphepha kubaluleke kakhulu. Enye yezakhi ezibalulekile zokuqinisekisa ukuphepha kwesekethe nokuvikelwa yi-I-MCB (I-miniature circuit breaker). I-MCBS yenzelwe ukuvala ngokuzenzakalelayo imibuthano lapho kutholwa izimo ezingejwayelekile, kuvinjelwa izingozi ezingaba khona njengamasekethe amafushane nemililo kagesi.

Ngakho-ke, usebenza kanjani ngqo i-MCB? Masikwazi ukudonsa ngokusebenza kwangaphakathi kwale divayisi ebalulekile. Kunezinhlobo ezimbili zoxhumana nabo ngaphakathi kwe-MCB - eyodwa ihleliwe kanti enye iyakhishwa. Ngaphansi kwezimo ezijwayelekile zokusebenza, laba oxhumana nabo bahlala baxhumana nomunye, bavumela okwamanje ukuba bageleze ngokujikeleza. Kodwa-ke, lapho ukwenyuka kwamanje kwangaphezu komthamo olinganiselwe wesifunda, oxhumana nabo abahamba phambili baphoqeleka ukuthi banqamule oxhumana nabo abahleliwe. Lesi senzo esisebenzayo "siyavula" umjikelezo, sisika okonakele futhi sivikele noma yimuphi umonakalo owengeziwe noma ingozi engaba khona.

Ikhono le-MCB lokuthola ngokushesha nangokunembile manje futhi liphendule ngokuvala ngokushesha umjikelezo okwenza kube yingxenye ebalulekile ezinhlelweni zikagesi. Isifunda esifushane senzeka lapho kunokuxhumeka ngengozi phakathi kwezintambo ezishisayo nezingathathi hlangothi, ezingadala ukuhlinzwa kungazelelwe kwamanje. Uma i-MCB ingafakwanga, eyenziwe ngokweqile yamanje ekhiqizwa umjikelezo omfishane ingadala ngokweqile, inxebeke yezinto zokwehlukanisa, noma imililo kagesi. Ngokuphazamisa ngokushesha umjikelezo lapho kwenzeka umjikelezo omfishane, abaphukile be-miniature baphula ilindika ekugwemeni izinhlekelele ezingaba khona.

Ngaphezu kwemibuthano emifushane, ama-MCBS nawo avikela ngokumelene namanye amaphutha kagesi afana nokulayisha ngokweqile nokuvuza. Ukulayisha ngokweqile kwenzeka lapho umjikelezo ugcwele kakhulu, udweba amaamayela amaningi kakhulu, futhi ukuvuza kwenzeka lapho kunendlela engahlosiwe emhlabathini, okuholela ekushaqeni ngogesi. Ama-MCBS ayakwazi ukuthola futhi aphendule kula maphutha, ahlinzeke ngokunye ukuphepha ohlelweni lukagesi nakubantu abalisebenzisayo.

Ukubaluleka kwe-MCB akona kuphela emsebenzini wayo; Ubukhulu bawo obuhlangene kanye nokufakwa kalula futhi kwenza kube yisinqumo sokuqala sokuvikelwa kwesifunda. Ngokungafani nama-fus wendabuko, ama-MCB angasethwa kabusha ngemuva kokukhipha, aqede isidingo sokubuyiselwa ngaso sonke isikhathi lapho kwenzeka iphutha. Lokhu akugcini nje kuphela isikhathi nomzamo, kepha futhi kunciphisa ukulungiswa kanye nezindleko zokubuyiselwa.

Ekugcineni, ama-MCB amaqhawe angaphephile wokuphepha kukagesi, asebenza buthule ngemuva kwezigcawu ukuvikela amasekethe kanye nabantu abathembela kuzo. Ama-MCBS ayakwazi ukuphendula ngokushesha ezimweni ezingejwayelekile emibukeni futhi ayingxenye ebalulekile ekugcinweni kokuphepha nobuqotho bezinhlelo zikagesi. Noma ngabe kusesimweni sokuhlala, ezentengiso noma zezimboni, ukuba khona kwe-MCB kuqinisekisa ukuthi amaphutha kagesi axazululwa ngokushesha, ukunciphisa ubungozi bomonakalo nezingozi ezingaba khona. Njengoba ubuchwepheshe buqhubeka buqhubekisa phambili phambili, abaphukileyo bezesekeli abancane ngokungabazeka bahlale bengavikeleki engxenyeni yokuvikelwa, bakunikeze ukuthula kwengqondo nokuqinisekisa ukuqhubeka kwamandla.