Umahluko phakathi kwe-MCB kunye ne-MCCB

Kukho iintlobo ezimbini eziqhelekileyo zee-circuit breakers ezisetyenziswa kakhulu kwizicelo ezahlukeneyo:abaphuli beesekethe zetyala elibunjiweyo (I-MCCBkunyeiziphuli zesekethe ezincinci (I-MCBZombini zizinto ezibalulekileyo kwiinkqubo zombane, zibonelela ngokhuseleko kwi-overloads kunye ne-short circuits. Nangona kunjalo, kukho umahluko omkhulu phakathi kwezi ntlobo zimbini ze-circuit breakers, kwaye ukuqonda la mahluko kubalulekile ekukhetheni imveliso echanekileyo yesicelo esithile.

Umsebenzi ophambili we-MCCB kukubonelela ngokhuseleko olugqithisileyo nolwe-short-circuit kwiinkqubo zokusasazwa kwe-voltage ephantsi kunye neesekethe zokukhusela iimoto. Ziyaziwa ngokuthembeka kwazo nokuzinza, nto leyo ezenza zibe lukhetho oludumileyo kwiindawo zoshishino. Kwelinye icala, ii-Miniature circuit breakers zisetyenziselwa ukubonelela ngokhuseleko kwiiyunithi zokusasazwa kwe-electrical terminal kwizakhiwo. Nangona zi-circuit breakers, kukho umahluko phakathi kwee-MCCB kunye nee-MCB ekufuneka ziqwalaselwe xa kukhethwa imveliso efanelekileyo kwisicelo esithile.

Okokuqala, zombini ii-molded case circuit breakers kunye nee-miniature circuit breakers kufuneka zithobele imigangatho yemveliso esisiseko kwaye zibe nomgaqo ofanayo wokusebenza njengee-circuit breakers. Kodwa kukho umahluko ocacileyo phakathi kwezi zimbini ngokweeparameter zombane kunye nezoomatshini kunye neendawo ezifanelekileyo zokusebenza.

Omnye womahluko ophambili phakathi kweMCCB kunye neMCB ziiparameter zombane abanokuzisingatha. I-MCCB inikwe umlinganiselo ofikelela kwi-2000A, nto leyo eyenza ukuba ifaneleke kumagumbi amakhulu kunye nemithwalo yombane enzima. Ii-MCB, kwelinye icala, zinomlinganiselo ophezulu wamandla ombane we-125A, nto leyo ethintela amandla azo kwaye izenze zifaneleke ngakumbi kwizicelo ezincinci. Lo mahluko kumanqanaba angoku uthetha ukuba ii-MCCB zifanelekile ngakumbi kwiindawo zoshishino kunye nezorhwebo apho imithwalo yombane emikhulu ixhaphakileyo, ngelixa ii-MCB zihlala zisetyenziswa kwiindawo zokuhlala kunye neendawo zorhwebo ezincinci.

Ukongeza kwiiparameter zombane, kukwakho nomahluko kwiiparameter zoomatshini phakathi kweMCCB kunye neMCCB. Umzekelo, iingcingo eziqhagamshelwe kwiMCCB zihlala zijiyile, kwaye indawo ephezulu idlula iimitha zesikwere ezingama-35. Ngokwahlukileyo koko, iMCB yenzelwe ukusebenzisa iingcingo ezincinci kwaye ifanelekile kwiindawo ezifikelela kwiimitha zesikwere ezili-10. Lo mahluko woomatshini uthetha ukuba iMCCB ilungele ngakumbi ukuphatha iinkqubo zombane ezinkulu, ngelixa iMCB ilungele ngakumbi ukusetyenziswa ezincinci.

Enye into ebalulekileyo ekufuneka iqwalaselwe yindawo yokusebenza. Ii-MCCB zenzelwe ukusetyenziswa kwiindawo ezahlukeneyo, kuquka iindawo zoshishino nezorhwebo. Ziyakwazi ukusingatha imithwalo yombane enzima kwaye zihlala ixesha elide, nto leyo ezenza zifaneleke kwiindawo apho ukuthembeka kubalulekile khona. Ii-MCB, kwelinye icala, zenzelwe ukusetyenziswa ekwakheni iinkqubo zokusasaza umbane kwaye zilungele ngakumbi iindawo zokuhlala kunye neendawo zorhwebo ezincinci.

Ngamafutshane, nangona zombini i-MCCB kunye ne-MCB zizinto ezibalulekileyo kwiinkqubo zombane, zenzelwe ukusetyenziswa okwahlukeneyo kwaye zinemahluko amakhulu kwiiparameter zazo zombane kunye nezoomatshini. Ukuqonda la mahluko kubalulekile ekukhetheni imveliso efanelekileyo kwisicelo esithile, nokuba yindawo yemizi-mveliso, yorhwebo okanye yokuhlala. Ngokuqwalasela izinto ezifana novavanyo lwangoku, iiparameter zoomatshini kunye nendawo yokusebenza, isigqibo esinolwazi sinokwenziwa xa kukhethwa ii-MCCB kunye nee-MCB zenkqubo ethile yombane.