Chiyambi cha Molded Case Circuit Breaker (MCCB)

Chiyambi chaChotsukira Mlandu Chowumbidwa (MCCB) yasintha momwe timatetezera ma circuits ndi zida. Chipangizo chatsopanochi chapangidwa kuti chizingoletsa kuyenda kwa magetsi pokhapokha ngati chapitirira zomwe zakonzedwa, motero chimapereka chitetezo choyambira ku overload, short circuit ndi ground failure. MCCB ili mu casing ya pulasitiki ndipo imagwiritsa ntchito pulasitiki insulators kuti ilekanitse ma conductor ndi zitsulo zokhazikika. Ndi zinthu zake zosiyanasiyana komanso zosankha, MCCB ndi yankho lodalirika komanso lothandiza pa ntchito zosiyanasiyana.

Ma MCCB nthawi zambiri amakhala ndi gawo loyendera maginito lotentha, koma mitundu ikuluikulu ikhoza kukhala ndi masensa oyendera maginito olimba. Magawo oyendera awa amapereka ntchito yoyambira yotsegulira dera ngati pakhala vuto. Maulendo amatha kugawidwa m'mitundu iwiri: kukwera kwa maginito otenthetsera ndi kukwera kwamagetsi, zomwe zimathandiza ogwiritsa ntchito kusankha mosavuta chitetezo choyenera malinga ndi zosowa zawo. Kuphatikiza apo, MCCB imapezeka m'mitundu yosiyanasiyana yaposachedwa kuphatikiza 16, 25, 30, 40, 50, 63, 80, 100, 125, 160, 200, 225, 250, 315, 350, 400, 500 ndi 630A, zomwe zimapangitsa kuti ikhale yoyenera mphamvu zosiyanasiyana zonyamula katundu.

Chimodzi mwa zinthu zazikulu za MCCB ndi kapangidwe kake kotsekedwa mkati mwa nyumba ya pulasitiki. Kapangidwe kameneka kamaonetsetsa kuti zigawo zonse za chotsukira ma circuit breaker chopangidwa ndi umbid zimatetezedwa bwino ku zinthu zachilengedwe, zomwe zimapangitsa kuti zidazi zikhale zodalirika komanso zogwira ntchito. Kuphatikiza apo, ma contact othandizira, kutulutsidwa kwa undervoltage ndi kutulutsidwa kwa shunt makamaka zimakhala zokhazikika ndipo zimatha kusinthidwa mosavuta ndikugwirizanitsidwa ndi ntchito zina ngati pakufunika. Ngakhale kapangidwe kakang'ono ka chotsukira ma circuit breaker chopangidwa ndi umbid chimachepetsa ntchito, kamapereka mwayi wogwiritsa ntchito pamanja komanso njira zazikulu zosinthira magetsi kuti zikwaniritse zosowa zosiyanasiyana za ogwiritsa ntchito m'mapulogalamu osiyanasiyana.

MCCB imaperekanso njira zosinthira ma electronic overcurrent, omwe amagawidwa m'mitundu iwiri: Gulu A ndi Gulu B. Gulu B MCCB imapereka njira zodzitetezera zapamwamba za magawo atatu, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsa ntchito zomwe zili ndi kudalirika kwakukulu komanso zofunikira pakugwira ntchito. Kumbali inayi, Gulu A MCCB yokhala ndi thermal magnetic tripper ili ndi gawo lalikulu pamsika chifukwa cha mtengo wake wotsika. Mitundu yonse iwiri ya MCCB ndi yoyenera kugwiritsa ntchito mitundu yosiyanasiyana ya mafakitale ndi mabizinesi, kupereka chitetezo chofunikira cha zolakwika zamagetsi ndikuwonetsetsa kuti makina amagetsi ndi otetezeka.

Mwachidule, ma plastic case circuit breakers (MCCBs) ndi zida zofunika kwambiri m'makina amagetsi amakono, zomwe zimapereka chitetezo chapamwamba komanso magwiridwe antchito odalirika. Ndi nyumba yake yotsekedwa yapulasitiki, zida zosinthika zomwe zingasinthidwe komanso njira zosiyanasiyana zoyendera, MCCB ndi yoyenera kugwiritsa ntchito mphamvu zosiyanasiyana zonyamula katundu ndi ntchito. Kaya kuteteza ma circuit a nthambi kapena kupereka chitetezo chapamwamba cha mulingo wachitatu, ma MCCB ndi zida zosinthika komanso zofunika kwambiri pakuwonetsetsa kuti makina amagetsi ndi otetezeka komanso odalirika.