Circuit Breaker Accessories: Cov no suav nrog cov khoom xws li shunt mus ncig, undervoltage mus txawv tebchaws, thiab lub cev muaj zog- ua haujlwm mechanisms. Ob leeg shunt thiab undervoltage mus ncig ua si siv voltage coils; muab cov kev ntsuas hluav taws xob sib tw, cov chav tsim tsim rau AC tshuab tuaj yeem siv rau hauv DC systems yam tsis tas yuav hloov kho. Kev pab cuam thiab lub tswb nrov yog universally sib xws nrog AC thiab DC circuits. Txawm li cas los xij, lub cev muaj zog- cov txheej txheem ua haujlwm yuav tsum rov tsim dua tshiab thaum npaj rau siv hauv DC daim ntawv thov.
Lwm yam kev xav
Tsis zoo li AC tam sim no, DC tam sim no tsis muaj tus yam ntxwv ntawm kev hla lub zero point. Yog li ntawd, kev cuam tshuam ntawm DC luv luv- cov hluav taws xob tam sim no - lossis txawm tias qhov cuam tshuam tam sim no ntawm qhov tsis tshua muaj siab heev - thiab qhov kev ploj tuag tom qab ntawm cov hluav taws xob arcs tam sim no muaj teeb meem loj. Therefore, wiring configurations should employ a series connection of two or three poles to increase the number of contact gaps, thereby distributing the arc energy across multiple interruption points.
Ntxiv nrog rau ib txwm thermal-magnetic trip units, hluav taws xob mus ncig ua si kuj tau txais kev pom zoo. Ib qho txiaj ntsig tseem ceeb ntawm kev mus ncig hauv hluav taws xob yog lawv lub peev xwm los tswj kev ua haujlwm ruaj khov txawm tias qhov kub thiab txias hloov pauv.