Yuav ua li cas sai sai xyuas cov hluav taws xob to hauv tsev circuits
Nyob rau hauv tus txheej txheem ntawm kev siv hluav taws xob, koj yuav tsum xyuam xim rau kev nyab xeeb thiab tam sim ntawd soj ntsuam qhov ua rau ntawm cov teeb meem to. Cia peb kawm ua ke seb yuav txiav txim siab seb lub voj voog puas, cov cuab yeej thiab cov cuab yeej xav tau dab tsi, thiab cov teeb meem dab tsi yuav tsum tau them sai sai rau thaum kuaj xyuas qhov hluav taws xob hluav taws xob.
Txhawm rau txheeb xyuas seb lub voj voog puas, koj xav tau cov cuab yeej ntsuas kev tshaj lij. Feem ntau, ib tug megger yog siv los xyuas qhov Circuit Court. Nws tsis pom zoo kom siv ib lub multimeter, vim hais tias cov khoom siv hluav taws xob hauv tsev feem ntau yog 220V, thiab cov multimeter yog qhov tsim nyog rau kev ntsuas qhov hluav taws xob tsawg. Tsuas yog thaum qhov teeb meem xau loj heev, multimeter tuaj yeem kuaj pom hluav taws xob.
Yog tias tsis muaj megohmmeter, koj tuaj yeem xav txog kev siv multimeter. Koj yuav tsum tau kho lub multimeter rau 200 megohms thiab tus taw tes rau 10K, thiab tom qab ntawd ntsuas qhov ua txhaum.
Kev tshuaj xyuas tshwj xeeb:
Tua tawm lub tswv yim hloov, tshem tawm tag nrho cov khoom siv hluav taws xob, thiab ntsuas qhov kev tiv thaiv ntawm cov hlau nyob, cov hlau tsis huv, thiab cov hlau nyob thiab cov xaim hauv av kom ntau tshaj 1 megabyte, uas txhais tau hais tias cov kab hluav taws xob zoo.
Txiav txim siab qhov tshwm sim los ntawm kev ntsuas: 500K mus rau 1M ohm yog cov rwb thaiv tsev dav dav, 10k txog 200K yog qhov to me me, thiab qis dua 7K ohm yog qhov xau loj heev, uas yuav ua rau cov dej ntws tawm mus.
Lub megohmmeter, tseem hu ua megohmmeter, txiav tawm lub zog rau kab thaum ntsuas, thiab siv lub megohmmeter los co nws ncaj qha.
A 500V megger tuaj yeem siv rau cov hluav taws xob qis. Ntsuas tawm tsam hauv av, yog tias cov rwb thaiv tsev tsawg dua 0.5 megohm, nws txhais tau tias cov rwb thaiv tsev tsis zoo heev thiab yuav tsum tau kuaj xyuas ib ntus.
Lus Cim: Thaum ntsuas nrog lub megometer, tsis muaj cov khoom siv hluav taws xob tuaj yeem txuas nrog lub voj voog kom ntseeg tau qhov tseeb ntawm qhov ntsuas qhov ntsuas.
Lub teb chaws tus qauv txiav txim siab tias 30 mA lossis ntau dua yog tus nqi tiv thaiv thawj zaug, uas yog, thaum lub sijhawm tam sim no ntawm 30 mA lossis ntau dua ntws los ntawm lub plawv thaum muaj hluav taws xob poob, hluav taws xob yuav tshwm sim thiab ua rau muaj kev phom sij rau lub neej.
Nco ntsoov xyuas seb puas muaj cov khoom tiv thaiv xau, thiab nws yuav tsum tau nruab rau ntawm qhov kawg ntawm cov kab nkag. Nws feem ntau yog kuaj ib hlis ib zaug kom paub meej tias tus tiv thaiv tuaj yeem ua haujlwm tau zoo.
Txoj kev soj ntsuam: Nias lub pob xeem kom mus ncig tam sim ntawd. Yog tias tsis muaj lus teb, nws yuav tsum tau hloov tam sim ntawd.
Cov saum toj no yog ib txoj hauv kev ceev los kuaj xyuas qhov xau ntawm circuits hauv koj lub tsev. Siv ib lub megger los txheeb xyuas qhov xau hauv Circuit Court. Kuv vam tias nws yuav pab tau rau sawv daws.
