Hauv cov teb ntawm kev tsim hluav taws xob thiab kev nyab xeeb,cov khoom siv hluav taws xob me me (MCBs)ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov circuits los ntawm kev overload thiab luv luv circuit puas tsuaj. Raws li ib qho tseem ceeb ntawm cov khoom siv hluav taws xob hauv tsev, kev lag luam, thiab kev lag luam, MCBs tau tsim los txiav cov circuits thaum pom qhov txhaum, yog li tiv thaiv kev phom sij xws li hluav taws xob hluav taws xob thiab kev puas tsuaj rau cov khoom siv.
Dab tsi yog ib qhoLub tshuab hluav taws xob me me (MCB)?
Lub tshuab hluav taws xob me me (MCB) yog lub tshuab hluav taws xob siv los tiv thaiv cov circuits los ntawm kev puas tsuaj overcurrent. Tsis zoo li cov fuses ib txwm muaj uas yuav tsum tau hloov tom qab tshuab, MCBs tuaj yeem rov pib dua tom qab tripping, ua rau lawv yooj yim dua thiab ua haujlwm tau zoo dua. MCBs muaj nyob rau hauv ntau yam ntsuas tam sim no, feem ntau yog txij li 0.5A txog 125A, thiab tuaj yeem siv dav hauv ntau yam kev siv.
Lub hauv paus ntsiab lus ua haujlwm ntawm lub miniature circuit breaker (MCB) yog dab tsi?
Cov tshuab hluav taws xob me me (MCBs) feem ntau ua haujlwm raws li ob txoj hauv kev:kev kub hnyiabthiabkev sib nqus tripping. Kev kho cua sov kho qhov teeb meem thaum muaj hluav taws xob ntau dhau. Nws siv daim kab bimetallic; thaum tam sim no siab dhau, daim kab bimetallic yuav khoov thiab deform, thiab thaum kawg ua rau lub voj voog puas. Kev kho magnetic tripping kho cov teeb meem luv luv. Nws siv lub electromagnet; thaum tam sim no nce siab sai sai, lub electromagnet tsim lub zog magnetic, ua rau lub voj voog puas tam sim ntawd.
Lub tshuab ua ob txoj haujlwm no ua kom ntseeg tau tias cov khoom siv hluav taws xob me me tuaj yeem tiv thaiv kev thauj khoom ntau dhau thiab luv luv, ua rau lawv yog ib qho tseem ceeb ntawm cov tshuab hluav taws xob niaj hnub no.
Hom Miniature Circuit Breakers
- Hom B Miniature Circuit BreakerLub tshuab hluav taws xob no tsim nyog rau cov kev siv hauv tsev thiab tsim los kom khiav ntawm 3 txog 5 zaug ntawm qhov tam sim no ntsuas. Nws zoo tagnrho rau cov circuits nrog cov khoom siv resistive, xws li teeb pom kev zoo thiab cua sov circuits.
- Hom C Miniature Circuit BreakerHom circuit breaker no siv rau hauv kev lag luam thiab kev lag luam thiab tsim nyog rau cov khoom siv inductive xws li motors thiab transformers. Nws qhov kev mus ncig tam sim no yog 5 txog 10 npaug ntawm qhov ntsuas tam sim no, thiab nws tuaj yeem tiv taus cov hluav taws xob luv luv yam tsis muaj kev mus ncig.
- Hom D Miniature Circuit BreakersCov cuab yeej hluav taws xob me me hom D yog tsim los rau kev siv hnyav, nrog rau qhov tam sim no tripping ntawm 10 txog 20 npaug ntawm qhov tam sim no ntsuas. Lawv feem ntau siv rau hauv cov voj voog nrog cov tam sim no inrush siab, xws li cov cav loj.
Qhov txawv ntawm MCB thiab MCCB yog dab tsi?
Ua ntej, MCBs feem ntau yog siv rau kev tiv thaiv luv luv thiab overload ntawm cov hluav taws xob qis (feem ntau qis dua 100 amps), thaum MCCBs feem ntau yog siv rau kev tiv thaiv luv luv thiab overload ntawm cov hluav taws xob siab (feem ntau siab dua 100 amps). Qhov no yog vim muaj cov qauv tsim thiab cov ntaub ntawv sib txawv siv hauv MCBs thiab MCCBs los pab txhawb cov hluav taws xob sib txawv thiab cov khoom thauj. Qhov thib ob, MCBs feem ntau siv cov khoom siv hluav taws xob xws li reeds thiab thermal relays rau kev tiv thaiv, thaum MCCBs siv cov khoom siv kho tshuab xws li thermal-magnetic protectors rau kev tiv thaiv.
Cov txiaj ntsig ntawm kev siv cov miniature circuit breakers
Piv rau cov fuses ib txwm muaj, cov miniature circuit breakers (MCBs) muaj ntau yam zoo. Ua ntej, MCBs muaj kev ntseeg siab dua thiab teb sai dua rau cov teeb meem hluav taws xob. Lawv qhov xwm txheej rov pib dua tom qab tripping txo qhov xav tau hloov pauv ntau zaus, yog li txo cov nqi txij nkawm. Ntxiv mus, MCBs me dua thiab yooj yim dua rau kev teeb tsa, ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau cov switchboards niaj hnub.
Tsis tas li ntawd xwb, cov cuab yeej hluav taws xob me me (MCBs) txhim kho kev nyab xeeb los ntawm kev txo qis qhov kev pheej hmoo ntawm hluav taws xob thiab kev puas tsuaj rau cov khoom siv. Lawv txoj kev tsim qauv tso cai rau lawv ua haujlwm hauv cov kev ntsuas tshwj xeeb, ua kom ntseeg tau tias kev ua haujlwm ntawm cov kab ke hluav taws xob zoo thiab zam kev pheej hmoo ntawm kev thauj khoom ntau dhau.
Hauv luv luv
Hauv kev xaus, cov khoom siv hluav taws xob me me (MCBs) yog cov khoom tseem ceeb ntawm cov tshuab hluav taws xob, muab kev tiv thaiv overload thiab luv luv. Muaj ntau yam MCBs muaj los ua kom tau raws li ntau yam kev xav tau ntawm daim ntawv thov, muab cov txiaj ntsig xws li kev ntseeg siab siab, yooj yim siv, thiab kev nyab xeeb siab. Nrog rau kev txhim kho tas mus li ntawm cov tshuab hluav taws xob, qhov tseem ceeb ntawm MCBs hauv kev ua kom muaj kev nyab xeeb ntawm cov chaw nyob thiab kev lag luam tsis tuaj yeem tsis quav ntsej. Rau cov neeg ua haujlwm hauv kev tsim hluav taws xob lossis kev nyab xeeb, kev nkag siab txog cov haujlwm thiab cov txiaj ntsig ntawm MCBs yog qhov tseem ceeb, vim nws pab ua kom muaj kev ua haujlwm zoo thiab muaj kev nyab xeeb ntawm cov tshuab hluav taws xob.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-04-2025