Chiyambi cha Mfundo Yogwirira Ntchito ndi Kugwiritsa Ntchito MCB

Mu ntchito zamagetsi ndi chitetezo,zothyola madera zazing'ono (MCBs)Ma MCB amatenga gawo lofunika kwambiri poteteza ma circuit kuti asawonongeke ndi magetsi ambiri komanso ma short circuit. Monga gawo lofunikira kwambiri pamagetsi okhala m'nyumba, m'mabizinesi, komanso m'mafakitale, ma MCB amapangidwira kuti azichotsa ma circuit okha akazindikira vuto, potero amaletsa zoopsa monga moto wamagetsi ndi kuwonongeka kwa zida.

Kodi ndi chiyanichothyola dera chaching'ono (MCB)?

Chotsekera dera laling'ono (MCB) ndi chotsekera dera chomwe chimagwiritsidwa ntchito kuteteza ma circuit kuti asawonongeke ndi ma overcurrent. Mosiyana ndi ma fuse achikhalidwe omwe ayenera kusinthidwa akaphulika, ma MCB amatha kubwezeretsedwanso akagwa, zomwe zimapangitsa kuti akhale njira yabwino komanso yothandiza yotetezera ma circuit. Ma MCB amapezeka m'njira zosiyanasiyana, nthawi zambiri kuyambira 0.5A mpaka 125A, ndipo angagwiritsidwe ntchito kwambiri m'njira zosiyanasiyana.

Kodi mfundo yogwirira ntchito ya miniature circuit breaker (MCB) ndi iti?

Ma Miniature circuit breakers (MCBs) amagwira ntchito makamaka pogwiritsa ntchito njira ziwiri:kutentha kwambirindikugwedezeka kwa maginitoKugunda kwa kutentha kumathandizira kuthana ndi zinthu zochulukira. Kumagwiritsa ntchito mzere wa bimetallic; pamene mphamvu yamagetsi ili yokwera kwambiri, mzere wa bimetallic umapindika ndikusokonekera, pamapeto pake kumaswa dera. Kugunda kwa maginito kumathandizira kuthana ndi zinthu zofupikitsa. Kumagwiritsa ntchito maginito amagetsi; pamene mphamvu yamagetsi ikukwera mwadzidzidzi, maginito amagetsi amapanga mphamvu yamagetsi yamphamvu, nthawi yomweyo kumaphwanya dera.

Njira ziwirizi zimatsimikizira kuti ma miniature circuit breakers amatha kuletsa kudzaza kwambiri ndi ma short circuit, zomwe zimapangitsa kuti akhale gawo lofunika kwambiri pamagetsi amakono.

Mitundu ya Miniature Circuit Breakers

1. Mtundu B Miniature Circuit Breaker: Chotsekereza magetsi ichi ndi choyenera kugwiritsidwa ntchito m'nyumba ndipo chapangidwa kuti chizigwedezeka ndi mphamvu yamagetsi yowonjezereka katatu mpaka kasanu kuposa mphamvu yamagetsi yovomerezeka. Ndi yabwino kwambiri pa mabwalo okhala ndi katundu woletsa, monga magetsi ndi mabwalo otenthetsera.
2. Mtundu C Miniature Circuit Breaker: Mtundu uwu wa chotsegula ma circuit umagwiritsidwa ntchito m'mabizinesi ndi m'mafakitale ndipo ndi woyenera kugwiritsa ntchito zinthu zoyambitsa monga ma mota ndi ma transformer. Mphamvu yake yoyendera ndi yowirikiza ka 5 mpaka 10 kuposa mphamvu yoyesedwa, ndipo imatha kupirira mafunde afupiafupi osagwedezeka.
3. Mtundu D Miniature Circuit Breakers: Ma circuit breaker a mtundu wa D amapangidwira ntchito zolemera, okhala ndi current yokhotakhota yowirikiza ka 10 mpaka 20 kuposa current yovomerezeka. Amagwiritsidwa ntchito kwambiri m'ma circuit omwe ali ndi ma current othamanga kwambiri, monga ma motors akuluakulu.

Kodi kusiyana pakati pa MCB ndi MCCB ndi kotani?
Choyamba, ma MCB amagwiritsidwa ntchito makamaka poteteza mafunde afupi ndi ochulukirapo pamagetsi otsika (nthawi zambiri pansi pa ma amps 100), pomwe ma MCCB amagwiritsidwa ntchito makamaka poteteza mafunde afupi ndi ochulukirapo pamagetsi okwera (nthawi zambiri pamwamba pa ma amps 100). Izi zimachitika chifukwa cha mapangidwe osiyanasiyana a kapangidwe ndi zipangizo zomwe zimagwiritsidwa ntchito mu ma MCB ndi ma MCCB kuti zigwirizane ndi mafunde ndi katundu wosiyanasiyana. Chachiwiri, ma MCB nthawi zambiri amagwiritsa ntchito zida zamagetsi monga mabango ndi ma thermal relay kuti ateteze, pomwe ma MCCB amagwiritsa ntchito zida zamakanika monga zoteteza mafunde amagetsi kuti ateteze.

Ubwino wogwiritsa ntchito ma miniature circuit breakers

Poyerekeza ndi ma fuse achikhalidwe, ma miniature circuit breakers (MCBs) amapereka zabwino zambiri. Choyamba, ma MCB ndi odalirika kwambiri ndipo amayankha mwachangu mavuto amagetsi. Kukhazikika kwawo kokhazikika pambuyo pogubuduzika kumachepetsa kufunika kosintha pafupipafupi, motero kumachepetsa ndalama zokonzera. Kuphatikiza apo, ma MCB ndi ang'onoang'ono komanso osavuta kuyika, zomwe zimapangitsa kuti akhale chisankho chabwino kwambiri pa switchboards zamakono.

Kuphatikiza apo, ma miniature circuit breakers (MCBs) amawonjezera chitetezo mwa kuchepetsa chiopsezo cha moto wamagetsi ndi kuwonongeka kwa zida. Kapangidwe kake kamawathandiza kugwira ntchito mkati mwa magawo enaake, kuonetsetsa kuti machitidwe amagetsi amagwira ntchito bwino komanso kupewa zoopsa zochulukirapo.

Mwachidule

Mwachidule, ma miniature circuit breakers (MCBs) ndi zinthu zofunika kwambiri pamakina amagetsi, zomwe zimapereka chitetezo chofunikira kwambiri komanso chotsika kwambiri. Ma MCB osiyanasiyana amapezeka kuti akwaniritse zosowa zosiyanasiyana zogwiritsidwa ntchito, zomwe zimapereka zabwino monga kudalirika kwambiri, kugwiritsa ntchito mosavuta, komanso chitetezo chachikulu. Ndi chitukuko chopitilira chamakina amagetsi, kufunika kwa ma MCB pakuwonetsetsa kuti malo okhala ndi mafakitale ndi otetezeka sikunganyalanyazidwe. Kwa iwo omwe amagwira ntchito muukadaulo wamagetsi kapena chitetezo, kumvetsetsa ntchito ndi zabwino za ma MCB ndikofunikira, chifukwa zimathandiza kuonetsetsa kuti makina amagetsi amagwira ntchito bwino komanso motetezeka.