Kev Nkag SiabRCCBsIb Feem Tseem Ceeb ntawm Kev Nyab Xeeb Hluav Taws Xob
Hauv ntiaj teb kev nyab xeeb hluav taws xob, lub tshuab hluav taws xob seem (RCCB) yog ib lub cuab yeej tseem ceeb uas tsim los tiv thaiv tib neeg thiab khoom vaj khoom tsev ntawm kev phom sij ntawm hluav taws xob. Thaum peb kawm txog qhov nyuaj ntawm RCCB, nws pom tseeb tias lub cuab yeej no ua lub luag haujlwm tseem ceeb hauv kev teeb tsa hluav taws xob niaj hnub no kom ntseeg tau tias muaj kev nyab xeeb thiab kev ntseeg siab.
RCCB yog dab tsi?
RCCB, tseem hu ua lub cuab yeej hluav taws xob seem (RCD), yog ib lub cuab yeej hluav taws xob uas txiav lub voj voog thaum nws pom tias muaj qhov tsis sib npaug ntawm cov xov hluav taws xob nyob thiab cov xov hluav taws xob nruab nrab. Qhov tsis sib npaug no tuaj yeem tshwm sim los ntawm ntau yam, xws li kev txuas hluav taws xob tsis raug, kev puas tsuaj ntawm cov rwb thaiv tsev, lossis ib tus neeg kov cov xov hluav taws xob tsis raug. RCCB saib xyuas cov hluav taws xob ntws los ntawm lub voj voog tas li, thiab yog tias nws pom tias muaj qhov hluav taws xob xau (feem ntau yog qis li 30 mA), nws yuav tawg thiab txiav lub zog hauv milliseconds. Qhov kev teb sai no yog qhov tseem ceeb rau kev tiv thaiv kev poob hluav taws xob thiab txo qhov kev pheej hmoo ntawm hluav taws xob.
RCCB ua haujlwm li cas?
Lub hauv paus ntsiab lus ua haujlwm ntawm RCCB yog raws li lub hauv paus ntsiab lus ntawm qhov sib txawv tam sim no. Nws muaj ib lub plawv hlau thiab ob lub kauj: ib qho rau cov xov hlau muaj sia thiab ib qho rau cov xov hlau nruab nrab. Hauv qab qhov xwm txheej ib txwm muaj, cov hluav taws xob ntws los ntawm ob lub xov hlau yog sib npaug thiab cov teb sib nqus uas tsim los ntawm cov kauj yuav tshem tawm ib leeg. Txawm li cas los xij, yog tias muaj qhov tsis zoo tshwm sim, xws li cov hluav taws xob xau ntws mus rau hauv av, qhov sib npaug raug rhuav tshem, ua rau muaj qhov sib txawv ntawm cov teb sib nqus. Qhov tsis sib npaug no ua rau RCCB mus rau hauv av, rhuav tshem lub voj voog thiab tiv thaiv kev phom sij.
Hom RCCB
Muaj ntau hom RCCB, txhua hom muaj nws lub hom phiaj tshwj xeeb. Cov hom uas siv ntau tshaj plaws suav nrog:
1. 2-pole RCCB: Siv rau hauv cov voj voog ib theem, feem ntau pom muaj nyob rau hauv cov chaw nyob.
2. 4-pole RCCB: Tsim los rau peb-theem circuits, feem ntau siv rau hauv kev lag luam thiab kev lag luam.
3. Hom AC RCCB: ntes tau cov hluav taws xob seem (AC).
4. Hom A RCCB: tuaj yeem ntes tau AC thiab pulsating DC residual current, tsim nyog rau cov circuits ntawm cov khoom siv hluav taws xob.
Qhov Tseem Ceeb ntawm RCCB hauv Kev Nyab Xeeb Hluav Taws Xob
Qhov tseem ceeb ntawm RCCBs tsis tuaj yeem hais ntau dhau. Lawv yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb ntawm cov khoom siv hluav taws xob hauv tsev, chaw ua haujlwm thiab chaw ua haujlwm. Los ntawm kev muab kev tiv thaiv tiv thaiv kev poob hluav taws xob, RCCBs pab tiv thaiv txoj sia, tshwj xeeb tshaj yog nyob rau hauv cov chaw ntub dej xws li chav dej thiab chav ua noj. Tsis tas li ntawd, lawv ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv hluav taws xob los ntawm cov xov hlau tsis zoo lossis cov khoom siv.
Kev Teeb tsa thiab Kev Txij Nkawm
Rau kev ua haujlwm zoo tshaj plaws, RCCBs yuav tsum tau teeb tsa los ntawm tus kws hluav taws xob uas nkag siab txog cov kev cai tshwj xeeb ntawm lub kaw lus hluav taws xob. Kev kuaj xyuas thiab kev saib xyuas tsis tu ncua kuj tseem ceeb heev kom ntseeg tau tias cov khoom siv ua haujlwm zoo. Feem ntau RCCBs muaj lub pob sim uas tso cai rau tus neeg siv los xyuas nws txoj haujlwm tsis tu ncua. Nws raug pom zoo kom kuaj RCCB tsawg kawg ib hlis ib zaug kom ntseeg tau tias nws nyob rau hauv qhov xwm txheej zoo.
Hauv luv luv
Hauv kev xaus, lub tshuab hluav taws xob seem (RCCB) yog ib qho tseem ceeb ntawm lub tshuab hluav taws xob kev nyab xeeb. Nrog nws lub peev xwm los ntes thiab teb rau qhov tsis sib npaug ntawm hluav taws xob, nws yog ib qho cuab yeej tseem ceeb hauv kev tiv thaiv lub neej thiab khoom vaj khoom tsev los ntawm kev phom sij ntawm hluav taws xob. Qhov tseem ceeb ntawm RCCBs tsuas yog txuas ntxiv mus loj hlob thaum thev naus laus zis nce qib thiab cov tshuab hluav taws xob ua rau nyuaj dua, ntxiv qhov tseem ceeb ntawm qhov xav tau kev paub thiab kev nkag siab txog lub cuab yeej kev nyab xeeb tseem ceeb no. Txawm hais tias nyob hauv tsev, chaw ua lag luam lossis chaw ua haujlwm, RCCBs tseem yog lub hauv paus ntawm kev nyab xeeb hluav taws xob, ua kom muaj kev thaj yeeb nyab xeeb rau cov neeg siv txhua qhov chaw.
Lub sijhawm tshaj tawm: Lub Peb Hlis-21-2025