Misali mai suna da take Miniature Circuit Breaker?

Miniature Circuit Breaker ta nan da ke?

MCB na Ma'anar

MCB shine switch mai yawan kwallon kawo wanda ya yi aini don hanyar bincike masu zabe-zaben kasa daga fadada maza ko jirgin hankali.

Fuse da MCB

A lokacin yanzu, miniature circuit breakers (MCBs) suna fi amfani a cikin masu zabe-zaben kasa zuwa fadada fuse. MCB na kayayyakin kadan da suka da shi saboda fuse:

• Yana bincika masu zabe-zaben kasa a lokacin da mutane suka faruwa (ba tare da fadada maza ko jirgin hankali). MCB yana da kyau a kan in tabbatar da waɗannan abubuwa, domin yake da ƙarin lallewar maza.

• Idan manaja mai sarrafa yana ci gaba a lokacin da yake faru, ana iya tabbatar da yanayin da yake faru a cikin masu zabe-zaben kasa. Amma a lokacin da ka nemi fuse, za a duba fusen don tabbatar da anke so kuɗi. Saboda haka, yana da kyau in tabbatar da MCB ita ce ba fuse ba.

• Ba za a iya koyar da takamata a lokacin da fuse, saboda za a sake rubuta ko koyar da fusen don koyar da takamata. Amma a lokacin da MCB, za a iya koyar da takamata baki daya (daga literal) inda a ci gaban switch.

• Amfani da MCB yana da kyau da fuse a kan cin kai.

• MCBs suna iya kontrola da ƙarin, amma fuse ba.

Saboda waɗannan kayayyaki da suka da MCB domin fuse, a lokacin yanzu a cikin masu zabe-zaben kasa, MCB yana amfani da shi domin fuse. Yadda kawai kayayyakinsu MCB domin fuse shine wannan system yana da nasarawa da fuse.

Siffar Miniature Circuit Breaker

Akwai biyu na ƙarin MCB take yi: tun daga fadada maza da tun daga fadada maza. A cikin siffar thermal, strip bimetalic yake ci ɗaya ko kusa a lokacin da maza mai tsarki yake ci MCB.

Wannan ciyan strip bimetalic yake koyar da latch mekaniki. Idan koyar da shi, yana koyar da mechanism mai sarrafa, kuma yake koyar da contacts na miniature circuit breaker.

A lokacin da jirgin hankali, zama maza yake ci, plunger a coil mai faru yake ci. Wannan ciyan yake koyar da trip lever, kuma tushen yake koyar da latch mechanism kuma koyar da contacts na circuit breaker. Wannan ne ma'anar siffar MCB.

Kunne Miniature Circuit Breaker

Kunne MCB yana da kyau, yaɗuwa da ba da sauran. Ba a yi aiki ko koyar da MCB, ba, ba a yi sauƙi da sabon batu idan an bukata. MCB yana da uku na biyu na kunne. Su ne:

Frame na Miniature Circuit Breaker

Frame na MCB shine case mai sarrafa. Wannan shine housing mai yawan kwallon kawo, yaɗuwa, da ake samar da abubuwa masu.

Mechanism Mai Sarrafa Miniature Circuit Breaker

Mechanism mai sarrafa na MCB yana ba aiki don koyar da MCB da karamin ƙarfafa. Anke da uku “ON,” “OFF,” da “TRIPPED”. Latch mai sarrafa yana iya ci a ƙanan “TRIPPED” idan MCB yake faru saboda maza mai tsarki.

Idan a koyar da MCB da karamin ƙarfafa, latch mai sarrafa yana ci a ƙanan “OFF”. A lokacin da MCB yana ci ƙungiyar, switch yana ci a ƙanan “ON”. Idan a duba ƙanan latch mai sarrafa, za a iya tabbatar da yanayin MCB, ko da yake ci ƙungiyar, ko da yake faru, ko da ake koyar da shi da karamin ƙarfafa.

Trip Unit na Miniature Circuit Breaker

Trip unit shine ƙasar, wanda ya ƙunshi inganci na MCB. Akwai biyu na ƙarin mechanisms a MCB. Bimetal yana ba inganci da fadada maza mai tsarki, amma electromagnet yana ba inganci da fadada maza mai jirgin hankali.

Inganci na Miniature Circuit Breaker

An ƙunshi uku na ƙarin mechanisms a cikin MCB saboda koyar da shi. Idan a duba hoton, za a iya samun strip bimetallic, trip coil, da lever mai sarrafa da karamin ƙarfafa.

Zabe-zaben maza na MCB a hoton yana ƙunshi: terminal mai sarrafa na ƙarfi – strip bimetallic – trip coil – contact mai ci ɗaya – contact mai ci ƙarfi – terminal mai sarrafa na ƙarfi. Duka suna cikin ƙungiya.

Idan zabe-zaben yana da fadada maza mai tsarki, strip bimetallic yake ci ɗaya ko kusa. Wannan ciyan strip bimetallic yake koyar da latch point. Contact mai ci ɗaya na MCB yana da ƙarin spring pressure, saboda haka, ciyan kadan yake koyar da spring kuma yake koyar da contact mai ci ɗaya don koyar da MCB.

Trip coil yana ci ɗaya, idan a faru jirgin hankali, MMF na coil yake koyar da plunger don koyar da latch point, kuma yake koyar da MCB kafin sama.

Duk da yake, idan a koyar da lever mai sarrafa na MCB da karamin ƙarfafa, latch point yana ci ɗaya, kuma yake koyar da contact mai ci ɗaya kafin sama.

Idan ba su dukkan a cikin mechanism mai sarrafa, ba – kamar ciyan strip bimetallic, ko ciyan MMF na trip coil, ko koyar da ƙarfafa – latch point yana ci ɗaya, kuma spring yana koyar. Wannan yana koyar da contact mai ci ɗaya. Idan contact mai ci ɗaya yake ci ƙarfi, ana iya samun arc.

Arc yana ci ɗaya a cikin arc runner, kuma yana ci a cikin arc splitters, kuma yana koyar. Idan a koyar da MCB, anke da ƙari ƙanan operating latch a ƙanan on, kuma anke da MCB don ƙarin koyar da shi ko faru.