Ukuqonda ukubaluleka kweMicimbi yeSekethe yeMicimbi (MCBs) kuKhuseleko loMbane

Kwintsimi yokhuseleko lombane, ii-breakers zesekethe ezincinci (Ii-MCBs) dlala indima ebalulekileyo ekukhuseleni iisekethe kwi-overloads kunye neesekethe ezimfutshane. Ezi zixhobo ziyilelwe ukuphazamisa ngokuzenzekelayo ukuhamba kombane xa kubhaqwe isiphene, nto leyo ethintela iingozi ezinokubakho ezifana nomlilo okanye umothuko wombane. Iinketho ezininzi ezikhoyo eziquka i-AC DC Residual Current 1p 2P 3P 4P MCB, iResidual Current Circuit Breaker, RCCB, RCBO kunye ne-ELCB, kubalulekile ukuqonda ukubaluleka kwe-MCB ekuqinisekiseni ukhuseleko lweenkqubo zombane.

Ii-MCBs zenzelwe ukubonelela ngokhuseleko oluthembekileyo kwiindidi ezahlukeneyo zombane, ukusuka kwindawo yokuhlala ukuya kwiindawo zoshishino. Zifumaneka kwiindlela ezahlukeneyo zepali, kuquka i-1P, i-2P, i-3P kunye ne-4P, ukuhlangabezana neemfuno ezithile zokufakelwa kombane ezahlukeneyo. Nokuba ikhusela isigaba esinye okanye iisekethe zenqanaba lesithathu, i-MCB ibonelela ngezisombululo eziguquguqukayo zokukhusela iinkqubo zombane kwiimpazamo.

Enye yezinto eziphambili ze-MCBs kukukwazi ukufumanisa ngokukhawuleza nokuphendula kwii-overcurrents kunye neesekethe ezimfutshane. Le mpendulo ikhawulezayo inceda ukunciphisa umngcipheko womonakalo kwizixhobo zombane kunye neengcingo kunye nokunciphisa amandla omlilo wombane. Ukongeza, i-MCB ine-compact kunye noyilo olugcina indawo, iyenza ibe yinto efanelekileyo yofakelo kunye nendawo encinci.

Ukongeza kwi-overcurrent yokukhusela, ii-miniature circuit breakers zikwabonelela ngokhuseleko lokuvuza kwaye zihlala zibizwa ngokuba zii-residual current circuit breakers (RCCB) okanye izixhobo ezikhuselayo ezivuzayo (RCD). Ezi zixhobo zibalulekile ekubhaqweni nasekuphuleni isekethe xa kufunyaniswa ukuvuza kwangoku, oko kuthintela umngcipheko wokothuka kombane.

Xa ukhetha i-MCB efanelekileyo kwisicelo esithile, kubalulekile ukuqwalasela izinto ezifana nokulinganisa kwangoku, ukuphulwa kwamandla kunye nohlobo lokukhusela olufunekayo. Kukho iintlobo ngeentlobo zee-MCB ezifumanekayo, kubandakanywa ii-RCBOs (intsalela yangoku yezaphuli zesekethe ezinokhuseleko oludlulayo) kunye ne-ELCBs (izaphuli zesekethe ezivuzayo), kwaye kubalulekile ukukhetha eyona MCB ifanelekileyo ukuqinisekisa elona nqanaba liphezulu lokhuseleko lombane.

Isishwankathelo, ii-MCBs ziyinxalenye yokhuseleko lombane, zibonelela ngokhuseleko oluthembekileyo ngokuchasene ne-overcurrent, isiphaluka esifutshane kunye neempazamo zokuvuza. Ngeenketho zayo ezahlukeneyo ezibandakanya i-AC DC Residual Current 1p 2P 3P 4P MCB, RCCB, RCBO kunye ne-ELCB, i-MCB ibonelela ngezisombululo eziguquguqukayo nezisebenzayo zokukhusela iinkqubo zombane kwizicelo ezahlukeneyo. Ukuqonda ukubaluleka kwe-MCBs kubalulekile ekuqinisekiseni ukhuseleko kunye nokuthembeka kokufakelwa kombane.