Ukuqonda Ukubaluleka Kwezinqamuli Zesekethe Ezincane (MCBs) Ekuvikelekeni Kagesi

Emkhakheni wokuphepha kukagesi, ama-circuit breaker amancane (Ama-MCBs) idlala indima ebalulekile ekuvikeleni amasekhethi ekulayishweni ngokweqile namasekhethi amafushane. Lawa madivaysi aklanyelwe ukuphazamisa ngokuzenzakalelayo ukuhamba kukagesi lapho kutholwa iphutha, ukuvimbela izingozi ezingaba khona njengomlilo noma ukushaqeka kukagesi. Ngezinketho eziningi ezitholakalayo ezihlanganisa i-AC DC Residual Current 1p 2P 3P 4P MCB, Residual Current Circuit Breaker, RCCB, RCBO kanye ne-ELCB, kubalulekile ukuqonda ukubaluleka kwe-MCB ekuqinisekiseni ukuphepha kwamasistimu kagesi.

Ama-MCB aklanyelwe ukuhlinzeka ngokuvikeleka okuthembekile ezinhlelweni ezihlukahlukene zikagesi, kusukela ezindaweni zokuhlala kuya kwezimboni. Zitholakala ekucushweni kwezigxobo ezihlukene, okuhlanganisa i-1P, 2P, 3P ne-4P, ukuze kuhlangatshezwane nezidingo ezithile zokufakwa kukagesi okuhlukile. Ukuthi ivikela amasekhethi esigaba esisodwa noma ezigaba ezintathu, i-MCB inikeza izixazululo eziguquguqukayo zokuvikela amasistimu kagesi emaphutheni.

Esinye sezici ezibalulekile zama-MCB yikhono lawo lokubona ngokushesha nokuphendula ama-overcurrents namasekhethi amafushane. Lokhu kusabela okusheshayo kusiza ukunciphisa ubungozi bokulimala kwempahla kagesi kanye nezintambo futhi kunciphisa amandla omlilo kagesi. Ukwengeza, i-MCB inomklamo ohlangene futhi owonga isikhala, okuyenza ilungele ukufakwa okunesikhala esilinganiselwe.

Ngokungeziwe ekuvikelweni kwe-overcurrent, ama-circuit breaker amancane aphinde anikeze ukuvikelwa kokuvuza futhi ngokuvamile abizwa ngokuthi ama-residual current circuit breaker (RCCB) noma amadivaysi okuvikela amanje avuzayo (RCD). Lawa madivaysi abalulekile ekutholeni nasekuphuleni umjikelezo lapho kutholwa ukuvuza kwamanje, ngaleyo ndlela kuvinjwe ingozi yokushaqeka kukagesi.

Lapho ukhetha i-MCB efanele yohlelo lokusebenza oluthile, kubalulekile ukucabangela izici ezifana nesilinganiso samanje, ukuphulwa kwamandla kanye nohlobo lokuvikela oludingekayo. Kunezinhlobonhlobo zama-MCB atholakalayo, okuhlanganisa ama-RCBO (ama-circuit breaker amanje asele anokuvikela okudlulele) kanye nama-ELCB (ama-circuit breaker avuzayo), futhi kubalulekile ukukhetha i-MCB efaneleke kakhulu ukuze kuqinisekiswe izinga eliphezulu lokuphepha kukagesi.

Kafushane, ama-MCB ayingxenye ebalulekile yokuphepha kukagesi, ahlinzeka ngokuvikeleka okuthembekile ngokumelene namaphutha we-overcurrent, i-short circuit kanye nokuvuza. Ngezinketho zayo ezihlukahlukene ezihlanganisa i-AC DC Residual Current 1p 2P 3P 4P MCB, RCCB, RCBO kanye ne-ELCB, i-MCB inikeza izixazululo eziguquguqukayo nezisebenzayo zokuvikela amasistimu kagesi ezinhlelweni ezihlukahlukene. Ukuqonda ukubaluleka kwama-MCB kubalulekile ekuqinisekiseni ukuphepha nokuthembeka kokufakwa kukagesi.