Kodi Chosweka Circuit cha Molded Case ndi Chiyani?

Zophwanya ma circuit breakers zopangidwa ndi molded case(MCCB() imatha kudula mphamvu yamagetsi yokha mphamvu yamagetsi ikadutsa momwe imayendera. Chikwama chopangidwa chimatanthauza kugwiritsa ntchito zotetezera magetsi zapulasitiki ngati chipolopolo chakunja cha chipangizocho kuti chilekanitse ma conductor ndi zigawo zachitsulo zomwe zili pansi. Mafunde omwe amagwiritsidwa ntchito nthawi zambiri ndi awa: 16, 25, 30, 40, 50, 63, 80, 100, 125, 160, 200, 225, 250, 315, 350, 400, 500, 630A.
Mfundo yogwirira ntchito:
Ma contact akuluakulu a circuit breaker amatsekedwa pamanja kapena pamagetsi. Ma contact akuluakulu akatsekedwa, free tripping mechanism imatseka ma contact akuluakulu pamalo otsekedwa. Coil ya overcurrent release ndi thermal element ya thermal release zimalumikizidwa motsatizana ndi main circuit, ndipo coil ya undervoltage release imalumikizidwa limodzi ndi magetsi.
Pamene dera lafupikitsa kapena kuchulukira kwambiri kwa magetsi kumachitika mu dera lamagetsi, mphamvu ya kutulutsidwa kwa magetsi ochulukirapo imakokedwa, zomwe zimapangitsa kuti njira yolumikizira magetsi igwire ntchito ndipo ma contacts akuluakulu achotse dera lalikulu.
Pamene dera ladzaza kwambiri, gawo la kutentha la kutulutsa kutentha limatentha ndikupindika mzere wa bimetallic, ndikukankhira njira yopunthira kuti igwire ntchito, ndipo kukhudzana kwakukulu kumachotsa dera lalikulu.
Pamene dera lili ndi mphamvu zochepa, mphamvu ya kutulutsidwa kwa mphamvu zochepa imatulutsidwa, zomwe zimayatsanso njira yopumira ndikuchotsa dera lalikulu.
Pamene batani lotulutsa shunt likanikiza, chitseko cha shunt release chimakokedwa, njira yopumira yaulere imayatsidwa, ndipo kukhudzana kwakukulu kumachotsa dera lalikulu.