Umehluko phakathi kwe-MCB ne-MCCB

Kunezinhlobo ezimbili ezivamile zama-circuit breaker ezisetshenziswa kabanzi ezinhlotsheni ezahlukene zokusebenza:ama-circuit breakers e-case abunjiwe (I-MCCB) kanyeama-circuit breaker amancane (I-MCB). Zombili ziyizingxenye ezibalulekile ezinhlelweni zikagesi, zihlinzeka ngokuvikelwa ekugcwaleni ngokweqile kanye namasekethe amafushane. Kodwa-ke, kunomehluko omkhulu phakathi kwalezi zinhlobo ezimbili zama-circuit breaker, futhi ukuqonda lo mehluko kubalulekile ekukhetheni umkhiqizo ofanele wohlelo oluthile.

Umsebenzi oyinhloko we-MCCB ukuhlinzeka ngokuvikelwa kokulayisha ngokweqile kanye nokwe-short-circuit ezinhlelweni zokusabalalisa ezine-voltage ephansi kanye nezifunda zokuvikela izimoto. Zaziwa ngokuthembeka kwazo nokuzinza, okwenza zibe ukukhetha okuthandwayo ezindaweni zezimboni. Ngakolunye uhlangothi, ama-miniature circuit breaker asetshenziselwa ukuhlinzeka ngokuvikelwa kumayunithi okusabalalisa ama-terminal kagesi ezakhiweni. Nakuba kuyi-circuit breaker, kunemehluko phakathi kwama-MCCB nama-MCB okumele icatshangelwe lapho kukhethwa umkhiqizo ofanele wohlelo oluthile.

Okokuqala, womabili ama-circuit breaker akhiwe ngendlela ebumbene kanye nama-miniature circuit breaker kudingeka ahambisane nezindinganiso zomkhiqizo eziyisisekelo futhi abe nesimiso sokusebenza esifanayo nama-circuit breaker. Kodwa kukhona umehluko osobala phakathi kwalokhu okubili ngokwemigomo kagesi neyemishini kanye nezindawo zokusebenza ezifanele.

Omunye wemehluko omkhulu phakathi kwe-MCCB ne-MCB yimingcele kagesi abangayiphatha. I-MCCB ilinganiselwa ku-2000A, okwenza ifaneleke emakamelweni amakhulu kanye nemithwalo kagesi esindayo. Ngakolunye uhlangothi, ama-MCB anesilinganiso samandla kagesi esiphezulu esingu-125A, okunciphisa amandla awo futhi kuwenze afaneleke kakhulu ekusetshenzisweni kwezinga elincane. Lo mehluko wezilinganiso zamanje usho ukuthi ama-MCCB afaneleka kakhulu ezindaweni zezimboni nezentengiselwano lapho imithwalo kagesi emikhulu ivame khona, kuyilapho ama-MCB evame ukusetshenziswa ezindaweni zokuhlala kanye nezentengiselwano ezincane.

Ngaphezu kwamapharamitha kagesi, kukhona nomehluko kumapharamitha omshini phakathi kwe-MCCB ne-MCCB. Isibonelo, izintambo ezixhunywe kwi-MCCB zivame ukuba zinkulu, indawo ephezulu idlula amamitha-skwele angu-35. Ngokuphambene nalokho, i-MCB yenzelwe ukusebenzisa izintambo ezincane futhi ifanele izindawo ezifika kumamitha-skwele ayi-10. Lo mehluko womshini usho ukuthi i-MCCB ifaneleka kangcono ukuphatha izinhlelo zikagesi ezinkulu, kanti i-MCB ifaneleka kangcono ekusetshenzisweni okuncane.

Esinye isici esibalulekile okufanele sicatshangelwe yindawo yokusebenza. Ama-MCCB aklanyelwe ukusetshenziswa ezindaweni eziningi ezahlukene, okuhlanganisa nezindawo zezimboni nezentengiselwano. Ayakwazi ukusingatha imithwalo kagesi esindayo futhi ahlala isikhathi eside, okwenza afaneleke ukusetshenziswa lapho ukuthembeka kubalulekile khona. Ama-MCB, ngakolunye uhlangothi, aklanyelwe ukusetshenziswa ekwakheni izinhlelo zokusabalalisa ugesi futhi afaneleka kakhulu ezindaweni zokuhlala nezentengiselwano ezincane.

Ngamafuphi, yize zombili i-MCCB kanye ne-MCB ziyizingxenye ezibalulekile ezinhlelweni zikagesi, zenzelwe izinhlelo zokusebenza ezahlukene futhi zinomehluko omkhulu kumapharamitha azo kagesi nawemishini. Ukuqonda lo mehluko kubalulekile ekukhetheni umkhiqizo ofanele kakhulu wohlelo oluthile, kungakhathaliseki ukuthi kuyindawo yezimboni, yezentengiselwano noma yokuhlala. Ngokucabanga ngezinto ezifana nesilinganiso samanje, amapharamitha emishini kanye nendawo yokusebenza, isinqumo esinolwazi singenziwa lapho kukhethwa ama-MCCB kanye nama-MCB ohlelweni oluthile lukagesi.