Cov cuab yeej hluav taws xob seem (RCCB), tseem hu ua cov khoom siv hluav taws xob seem (RCD), yog cov khoom siv hluav taws xob tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv kev poob hluav taws xob thiab hluav taws xob. Hauv tsab xov xwm no, peb yuav kawm txog qhov tseem ceeb ntawm RCCBs, lawv cov haujlwm thiab vim li cas lawv thiaj li yog ib feem tseem ceeb ntawm txhua lub voj voog.
Ua ntej, nws yog ib qho tseem ceeb kom nkag siab tias RCCB yog dab tsi thiab nws ua dab tsi. RCCB yog ib lub cuab yeej uas qhib lub voj voog thaum pom tias muaj hluav taws xob xau, yog li ntawd txo qhov kev pheej hmoo ntawm kev raug hluav taws xob poob siab. Nws ua haujlwm los ntawm kev saib xyuas qhov sib npaug ntawm cov hluav taws xob ntws los ntawm cov xov hlau uas muaj sia thiab cov xov hlau tsis muaj zog ntawm lub voj voog. Txhua qhov sib txawv ntawm qhov sib npaug no, xws li thaum cov hluav taws xob xau rau hauv av vim muaj qhov txhaum lossis tib neeg kov cov khoom uas muaj sia, ua rau RCCB txiav cov khoom siv hluav taws xob sai sai, tiv thaiv kev raug hluav taws xob poob siab uas tuaj yeem ua rau tuag taus.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm RCCBs yog lawv lub peev xwm los tiv thaiv kev sib cuag ncaj qha thiab tsis ncaj qha nrog cov khoom siv hluav taws xob. Kev sib cuag ncaj qha tshwm sim thaum ib tus neeg kov lub xov tooj hluav taws xob lossis cov khoom siv hluav taws xob tsis zoo; kev sib cuag tsis ncaj qha tshwm sim thaum ib tus neeg kov ib yam khoom uas raug them vim muaj qhov txhaum. Hauv ob qho tib si, RCCBs tuaj yeem txo qhov kev pheej hmoo los ntawm kev cuam tshuam lub voj voog sai sai thiab tiv thaiv cov hluav taws xob kom tsis txhob ntws los ntawm lub cev, yog li txo qhov hnyav ntawm kev poob siab.
Tsis tas li ntawd xwb, RCCBs muaj txiaj ntsig zoo rau kev tiv thaiv hluav taws xob. RCCBs pab txo qhov kev phom sij ntawm hluav taws hauv kev teeb tsa hluav taws xob vim tias lawv tuaj yeem ntes tau cov dej xau me me uas tuaj yeem ua rau kub dhau thiab ua rau muaj hluav taws. Qhov no ua rau lawv tseem ceeb rau kev ua kom muaj kev nyab xeeb ntawm cov tib neeg thiab cov khoom vaj khoom tsev.
Ntxiv rau qhov zoo ntawm kev nyab xeeb, kev siv RCCBs yog qhov xav tau ntxiv los ntawm cov cai thiab cov cai hauv ntau lub tebchaws. Qhov no qhia txog qhov tseem ceeb ntawm kev teeb tsa RCCBs hauv txhua lub voj voog, txawm tias nyob hauv tsev, chaw ua lag luam lossis chaw ua haujlwm. Kev ua raws li cov cai no tsis yog tsuas yog ua kom muaj kev nyab xeeb ntawm cov neeg nyob hauv xwb, tab sis kuj pab txo qhov kev lav phib xaub rau cov tswv cuab thiab cov neeg cog lus hluav taws xob.
Thaum xaiv RCCB, nws yog ib qho tseem ceeb uas yuav tsum xav txog cov kev cai tshwj xeeb ntawm kev teeb tsa hluav taws xob. Muaj ntau hom RCCB sib txawv, suav nrog cov kev xaiv nrog cov qib rhiab heev sib txawv thiab cov yam ntxwv tripping. Piv txwv li, Hom AC RCCBs feem ntau yog tsim los tiv thaiv cov hluav taws xob sinusoidal alternating currents, thaum Hom A RCCBs muab kev tiv thaiv ntxiv tiv thaiv cov hluav taws xob pulsating DC, ua rau lawv tsim nyog rau kev siv hauv cov voj voog hauv cov khoom siv hluav taws xob lossis cov tsav tsheb ceev sib txawv. Nws yog ib qho tseem ceeb uas yuav tsum sab laj nrog tus kws hluav taws xob lossis tus kws ua haujlwm tsim nyog kom txiav txim siab hom RCCB zoo tshaj plaws rau ib daim ntawv thov tshwj xeeb.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev kuaj xyuas thiab kev saib xyuas RCCB tsis tu ncua yog qhov tseem ceeb kom ntseeg tau tias lawv ua haujlwm tau zoo. Kev kuaj xyuas tsis tu ncua tuaj yeem pab txheeb xyuas cov teeb meem lossis qhov tsis zoo hauv RCCB, kom ntseeg tau tias nws tseem ua haujlwm tau zoo thiab muaj txiaj ntsig zoo hauv kev muab kev tiv thaiv. Tsis tas li ntawd, nws raug pom zoo kom tus kws kho hluav taws xob uas muaj ntawv tso cai teeb tsa RCCB kom ntseeg tau tias kev teeb tsa raug thiab ua raws li cov cai lij choj.
Hauv kev xaus,RCCBsyog cov khoom ntawm cov hluav taws xob uas muab kev tiv thaiv tseem ceeb tiv thaiv kev poob siab hluav taws xob thiab kev phom sij hluav taws. Lawv lub peev xwm los ntes tau sai thiab txiav tawm thaum muaj qhov txhaum tshwm sim ua rau lawv yog cov khoom siv kev nyab xeeb tseem ceeb rau cov chaw nyob thiab cov chaw lag luam. Nrog rau kev nce qib ntawm kev nyab xeeb hluav taws xob thiab kev ua raws li txoj cai, qhov tseem ceeb ntawm RCCBs tsis tuaj yeem hais dhau. Cov tswv tsev, cov neeg cog lus hluav taws xob thiab cov tib neeg yuav tsum lees paub qhov tseem ceeb ntawm RCCBs thiab muab qhov tseem ceeb rau lawv qhov kev teeb tsa thiab kev saib xyuas hauv kev teeb tsa hluav taws xob.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-21-2023