Cov Hluav Taws Xob Me Me: Kev Tiv Thaiv Hluav Taws Xob Kom Muaj Kev Nyab Xeeb

To taub lub luag haujlwm ntawmMCBhauv cov tshuab hluav taws xob

Cov cuab yeej hluav taws xob me me (MCBs) yog cov khoom tseem ceeb hauv cov tshuab hluav taws xob niaj hnub no, muab kev tiv thaiv tseem ceeb tiv thaiv kev thauj khoom ntau dhau thiab luv luv. Raws li qhov xav tau cov khoom siv hluav taws xob txhim khu kev qha thiab muaj kev nyab xeeb txuas ntxiv mus, kev nkag siab txog kev ua haujlwm thiab qhov tseem ceeb ntawm MCBs tau dhau los ua qhov tseem ceeb rau cov kws tshaj lij thiab cov tswv tsev.

MCB yog dab tsi?

Ib lub MCB, lossis lub tshuab hluav taws xob me me, yog ib lub cuab yeej hluav taws xob uas tsim los tiv thaiv lub voj voog hluav taws xob ntawm kev puas tsuaj los ntawm overcurrent. Tsis zoo li cov fuses ib txwm muaj, uas yuav tsum tau hloov tom qab lawv tau tawg, MCB tuaj yeem rov pib dua tom qab raug tripped, ua rau nws yog qhov kev xaiv yooj yim dua thiab zoo dua rau kev tiv thaiv lub voj voog. MCBs feem ntau siv rau hauv kev siv hauv tsev, kev lag luam, thiab kev lag luam los tiv thaiv cov xov hluav taws xob thiab cov khoom siv txuas nrog.

MCB ua haujlwm li cas

Muaj ob lub hauv paus ntsiab lus tseem ceeb rau MCBs: thermal trip thiab magnetic trip. Lub tshuab thermal trip teb rau qhov xwm txheej overload, qhov twg tam sim no tshaj qhov peev xwm ntsuas ntawm lub voj voog rau ib lub sijhawm. Qhov no ua tiav los ntawm ib daim kab bimetallic, uas khoov thaum cua sov, thaum kawg ua rau lub qhov hloov qhib lub voj voog.

Cov txheej txheem sib nqus, ntawm qhov tod tes, teb rau cov voj voog luv luv, uas yog cov hluav taws xob nce siab sai sai. Hauv qhov no, lub electromagnet tsim lub zog sib nqus muaj zog uas rub lub qhov hloov qhib yuav luag tam sim ntawd, tiv thaiv kev puas tsuaj rau lub cev hluav taws xob.

Hom MCBs

Muaj ntau hom MCB, txhua hom muaj nws lub hom phiaj tshwj xeeb. Cov hom uas siv ntau tshaj plaws suav nrog:

1. Hom B MCB: Haum rau cov ntawv thov hauv tsev thiab tuaj yeem tswj hwm qhov overloads nruab nrab. Lawv trip ntawm 3 txog 5 zaug ntawm qhov tam sim no ntsuas.

2. Hom C MCB: Hom C MCBs zoo tagnrho rau kev lag luam thiab kev lag luam thiab tuaj yeem tswj tau cov dej ntws siab dua, ua rau lawv zoo tagnrho rau cov khoom siv inductive xws li cov motors. Lawv yuav dhia ntawm 5 thiab 10 npaug ntawm cov dej ntws ntsuas.

3. D-Type MCB: Cov circuit breakers no yog tsim los rau cov ntawv thov hnyav xws li transformers thiab cov motors loj thiab tuaj yeem tswj tau cov inrush currents siab heev. Lawv trip ntawm 10 txog 20 npaug ntawm cov rated current.

Cov txiaj ntsig ntawm kev siv MCB

Cov MCB muaj ntau yam zoo dua li cov fuses ib txwm muaj. Ua ntej, MCBs siv tau dua; thaum muaj qhov txhaum raug tshem tawm, lawv tuaj yeem rov pib dua yam tsis tas hloov. Qhov no tsis yog tsuas yog txuag lub sijhawm xwb, tab sis kuj txo cov nqi kho. Qhov thib ob, MCBs muab kev tiv thaiv meej dua, vim tias lawv tuaj yeem xaiv raws li cov yam ntxwv tshwj xeeb ntawm cov khoom thauj uas raug tiv thaiv. Qhov no ua kom ntseeg tau tias cov khoom siv rhiab heev raug tiv thaiv yam tsis muaj kev cuam tshuam tsis tsim nyog.

Tsis tas li ntawd xwb, MCBs muaj kev ntseeg siab dua thiab ua haujlwm sai dua li cov fuses, uas siv sijhawm ntev dua los teb rau qhov overloads. Qhov kev teb sai no pab txo qhov kev puas tsuaj rau cov khoom siv hluav taws xob thiab txo qhov kev pheej hmoo ntawm hluav taws.

Hauv kev xaus lus

Hauv kev xaus lus, cov khoom siv hluav taws xob me me (MCBs) ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kab ke hluav taws xob. Lawv lub peev xwm los tiv thaiv kev thauj khoom ntau dhau thiab luv luv, nrog rau lawv qhov yooj yim siv thiab rov siv dua, ua rau lawv yog ib qho tseem ceeb hauv kev siv hauv tsev thiab kev lag luam. Raws li thev naus laus zis txuas ntxiv mus, qhov tseem ceeb ntawm MCBs hauv kev tiv thaiv cov khoom siv hluav taws xob yuav tsuas yog nce ntxiv, ua rau kev nkag siab txog lawv cov haujlwm thiab cov txiaj ntsig tseem ceeb rau txhua tus neeg ua haujlwm nrog cov khoom siv hluav taws xob. Txawm hais tias koj yog tus tswv tsev nrhiav kev txhim kho kev nyab xeeb hluav taws xob lossis tus kws tshaj lij hluav taws xob, kev nkag siab txog MCBs yog qhov tseem ceeb hauv ntiaj teb hluav taws xob niaj hnub no.