RCD yog cov khoom siv tam sim no uas, thaum lub teeb tsa cov txiaj ntsig ntawm cov hluav taws xob sib txawv tau mus txog lossis siab dua, yuav tsum ua rau hluav taws xob qhib. Cov haujlwm tseem ceeb ntawm RCD yog: tiv thaiv tib neeg los ntawm hluav taws xob thiab tiv thaiv kom tsis txhob muaj hluav taws kub tshwm sim los ntawm cov xaim hluav taws xob tam sim no los ntawm cov xov hluav taws xob tsis zoo.
Cov neeg uas muaj kev nkag siab ntawm cov qauv ntawm hluav taws xob hluav taws xob paub tias cov hluav taws xob sib tsuam uas tau tshwm sim los ntawm luv-Circuit Court thiab dhau mus tam sim no tsis hnov mob rau qhov "me" tshwm sim. Rau ib tug neeg, lub tshuab hluav taws xob vim lub xaim hluav taws xob ntawm qhov hluav taws xob hluav taws xob ntawm 220 volts tuaj yeem muaj kev rau txim loj. Raws li kev xav, nrog ib qho ular, qhov tam sim no ntawm 220 mA tuaj yeem dhau los ntawm tib neeg lub cev. Hauv cov ntawv qhia txog kev noj qab haus huv thiab kev nyab xeeb, tus nqi ntawm 100 mA raug tsim los ntawm kev muaj peev xwm ua rau tuag taus, yog li ntawd, txawm hais tias kev tshawb fawb, 220 mA yog qhov txaus ntshai heev.
Hauv Lavxias, RCDs yog siv dav rau kev teeb tsa hauv lub vaj huam sib luag hluav taws xob ntawm txoj kev tsheb nqaj hlau DIN, cov RCD uas teeb tsa tsis tau siv dav.
Kev ua haujlwm txuj ci
Cov khoom siv tam sim no yog cov tub ntxhais muaj lub siab lim nrog 3 kauj. Qhov tam sim no muab rau cov neeg siv khoom ntws los ntawm thawj lub tshuab cua, qhov rov qab tam sim no ntws los ntawm ob. Nyob rau hauv lub xeev ib txwm, tus nqi ntawm cov hluav taws xob tawm tam sim no yuav tsum sib npaug nrog tus nqi ntawm cov khoom xa tawm, cov chaw sib nqus tau los ntawm cov dej tam sim no them txhua tus, thiab tag nrho cov flux sib npaug sib npaug nrog xoom. Yog tias qhov tawm ntawm qhov tam sim no dhau ntawm qhov tso cai tus nqi, qhov sib nqus flux pib ua haujlwm ntawm qhov kev tswj hwm thib peb winding, tsim cov kev siv lub tshuab hluav taws xob nyob hauv nws, uas ua rau ntawm qhov qhib Circuit Court relay. RCDs niaj hnub, ntxiv rau cov tub ntxhais thiab cov cua tshuab, muaj lwm cov khoom siv hluav taws xob, tab sis cov ntsiab lus piav qhia ntawm kev ua haujlwm yog lub hauv paus rau kev ua haujlwm ntawm cov khoom siv tam sim no.
Lub ntsiab RCDs
RCDs yog ib-theem thiab peb-theem, nyob ntawm qhov muab hluav taws xob - hluav taws xob thiab ywj pheej ntawm nws - electromechanical. Ib qho ntxiv, cov khoom siv tam sim no tau muab faib ua 5 yam raws li kev ua haujlwm.
Txij xyoo 1980s, hauv Tebchaws Asmeskas, feem ntau tsev neeg RCDs tau tsim rau hauv cov thom khwm.
Hais lus yam. RCD teb rau qhov kev hloov pauv ntawm sinusoidal plawg tam sim no, uas tuaj yeem nce qeeb lossis tshwm sim sai.
Hom A. Cov cuab yeej seem tam sim no teb rau hloov pauv thiab tsis tu ncua hloov kho, muaj peev xwm tshwm sim sai lossis nce qeeb.
Hom B. Cov cuab yeej teb rau kev hloov pauv ncaj qha, kho thiab kho qhov sib txawv ntawm cov roj hluav taws xob.
Hom S thiab G. RCD muaj lub sijhawm ncua sijhawm.
