Kusiyana pakati pa MCB ndi RCCB

Wowononga dera: amatha kuyatsa, kunyamula ndi kuswa mphamvu yapano pansi pazikhalidwe zanthawi zonse, amathanso kuyatsidwa pansi pamikhalidwe yomwe siili yanthawi zonse, kunyamula nthawi ndikuphwanya ma switch apano.

Micro Circuit Breaker, yomwe imatchedwa MCB (Micro Circuit Breaker), ndiye zida zamagetsi zomwe zimagwiritsidwa ntchito kwambiri pomanga zida zogawira magetsi.Amagwiritsidwa ntchito pa gawo limodzi ndi gawo laling'ono la magawo atatu, chitetezo chochulukira komanso chitetezo chambiri m'munsimu 125A, kuphatikiza mitundu inayi yamtundu umodzi wa 1P, mizati iwiri ya 2P, mizati itatu 3P ndi 4P.

The micro circuit breaker imakhala ndi makina ogwiritsira ntchito, kukhudzana, chipangizo chotetezera (zida zosiyanasiyana zotulutsa), makina ozimitsa arc, ndi zina zotero. Kulumikizana kwakukulu kumayendetsedwa pamanja kapena kutsekedwa ndi magetsi.Kulumikizana kwakukulu kukatsekedwa, njira yaulere yaulendo imatseka kukhudzana kwakukulu pamalo otseka.Coil ya kumasulidwa kwa overcurrent ndi chinthu chotentha cha kumasulidwa kwa kutentha kumagwirizanitsidwa ndi dera lalikulu mndandanda, ndipo coil ya kumasulidwa kwa undervoltage imagwirizanitsidwa ndi magetsi mofanana.Dongosolo likachitika pafupipafupi kapena kuchulukirachulukira kwambiri, zida za chipangizo chapaulendo zimakoka, zomwe zimapangitsa kuti njira yaulere igwire ntchito, ndipo cholumikizira chachikulu chimadula dera lalikulu.Dera likadzaza, chinthu chotentha cha chipangizo chotenthetsera chaulendo chimatenthetsa kuti chipindike pepala la bimetal ndikukankhira njira yaulere kuti igwire.Pamene dera liri pansi pa voteji, armature ya undervoltage release imatulutsidwa.Komanso imalola kuti njira yaulendo waulere igwire ntchito.

Chotsalira chamagetsi chamagetsi: Chosinthira chomwe chimangogwira ntchito pomwe chotsalira chamagetsi chimaposa mtengo wokhazikitsidwa kale.Zowonongeka zomwe zimagwiritsidwa ntchito kawirikawiri zimagawidwa m'magulu awiri: mtundu wamagetsi ndi mtundu wamakono, ndipo mtundu wamakono umagawidwa mumtundu wa electromagnetic ndi mtundu wamagetsi.Zowonongeka zowonongeka zimagwiritsidwa ntchito pofuna kupewa kugwedezeka kwaumwini, ndipo ziyenera kusankhidwa malinga ndi zofunikira zosiyanasiyana za kukhudzana kwachindunji ndi chitetezo chapadera.

Sankhani malinga ndi cholinga chogwiritsira ntchito komanso malo omwe zida zamagetsi zili

1) Chitetezo kukhudzana mwachindunji ndi kugwedezeka kwa magetsi

Chifukwa kuvulaza mwachindunji kugunda kwa magetsi ndikokulirapo, zotsatira zake zimakhala zazikulu, kotero kusankha chowotcha chowotcha chokhala ndi chidwi chachikulu, zida zamagetsi, zida zamagetsi zam'manja ndi mizere yosakhalitsa, ziyenera kuyikidwa mu lupu lomwe likugwira ntchito pano la 30mA, nthawi yogwira ntchito mkati mwa 0.1s kutayikira dera wosweka.Kwa nyumba zokhala ndi zida zambiri zapakhomo, ndi bwino kuziyika mutalowa mu mita ya mphamvu yapakhomo.

Ngati kugwedezeka kwamagetsi kumakhala kosavuta kuwononga kachiwiri (monga kugwira ntchito pamtunda), chodulira chozungulira chotayira chokhala ndi mphamvu ya 15mA ndi nthawi yogwiritsira ntchito mkati mwa US iyenera kuikidwa mu loop.Pazida zamagetsi zamagetsi m'zipatala, zotchingira zotumphukira zokhala ndi 6mA ndi nthawi yogwirira ntchito mkati mwa US ziyenera kukhazikitsidwa.

2) Chitetezo cholumikizana mwachindunji

Kulumikizana mosalunjika kugwedezeka kwamagetsi m'malo osiyanasiyana kungayambitse zovuta zosiyanasiyana kwa munthu, kotero kuti zowononga zowononga zotayirira ziyenera kukhazikitsidwa m'malo osiyanasiyana.Ndikofunikira kugwiritsa ntchito zowononga zotayirira zokhala ndi chidwi chachikulu m'malo omwe kugwedezeka kwamagetsi kumakhala kovulaza kwambiri.M'malo onyowa kuposa malo owuma chiwopsezo cha kugwedezeka kwamagetsi chimakhala chokulirapo, nthawi zambiri chimayenera kukhazikitsidwa pakali pano cha 15-30mA, nthawi yogwira ntchito mkati mwa 0.1s kutayikira kwamagetsi.Pazida zamagetsi m'madzi, zochita ziyenera kukhazikitsidwa.Kuthamanga kwamagetsi kwa 6-l0mA ndi nthawi yogwira ntchito mkati mwa US.Pazida zamagetsi zomwe wogwiritsa ntchito amayenera kuyima pa chinthu chachitsulo kapena m'chidebe chachitsulo, bola mphamvu yamagetsiyo ili yoposa 24V, cholumikizira chodulira chotayira chokhala ndi mphamvu yochepera 15mA ndi nthawi yogwirira ntchito mkati mwa US iyenera kukhazikitsidwa.Pazida zamagetsi zokhazikika zokhala ndi voliyumu ya 220V kapena 380V, pomwe kukana kwapansi kwa nyumbayo kuli pansi pa 500fZ, makina amodzi amatha kuyika chopumira chamagetsi ndi mphamvu ya 30mA ndi nthawi yogwiritsira ntchito 0.19.Pazida zazikulu zamagetsi zokhala ndi mphamvu yopitilira 100A kapena chozungulira chamagetsi chokhala ndi zida zingapo zamagetsi, chowotcha chamagetsi chotayikira chokhala ndi 50-100mA chimatha kukhazikitsidwa.Pamene kukana kwapansi kwa zida zamagetsi kuli pansi pa 1000, chowotcha chobowoleza chotayirira chokhala ndi 200-500mA chimatha kukhazikitsidwa.