Yuav Ua Li Cas Ntsuas 220v Kab Leakage Nrog Multimeter
Qhov teeb meem ntawm kev ntsuas 220V to nrog lub multimeter tsis haum, vim tias qhov koj xav ntsuas yog qhov xau tam sim no. Lub multimeter tsis muaj zog hauv kev ntsuas qhov tsis muaj zog AC tam sim no, thiab nws muaj teeb meem los ntsuas nws tsis raug.
Yog tias koj xav tias qhov hluav taws xob xau, koj tuaj yeem siv lub tshuab hluav taws xob uas muaj kev tiv thaiv xau los txiav txim, txiav txim qhov ntau ntawm cov xau ntu ntawm ntu, thiab daws teeb meem.
Raws li kev siv hluav taws xob los thaiv qhov xau ntawm txoj kab ntsuas, kuv tsis xav tias nws tsim nyog. Vim tias nws yog qhov xau, qhov kev tiv thaiv ntawm cov hlau nyob thiab kev tiv thaiv hauv av tsis yog qhov kawg, tab sis qhov voltage ntawm multimeter tsis txaus los piav qhia cov rwb thaiv tsev ntawm lawv, uas yog hais tias, qhov rwb thaiv tsev ntawm 9V yog txawv kiag li. los ntawm 220V. Yog li ntawd, lub rwb thaiv tsev tiv thaiv yog ntsuas ntawm ib qho mob siab tshaj qhov hluav taws xob hluav taws xob kom tau txais cov ntaub ntawv txhim khu kev qha. Yog li koj yuav tsum siv lub shaker.
Tau kawg, yog tias koj tsuas yog sim seb puas muaj qhov luv luv lossis ib txoj hauv kev ntawm cov hlau nyob thiab cov av tiv thaiv, nws tseem tuaj yeem siv multimeter los thaiv nws. Tsuas yog ntsuas tsis tau cov ntaub ntawv rwb thaiv tsev ntawm lawv.
Hais lus nruj me ntsis, ib qho megger yuav tsum tau siv los ntsuas seb cov kab hluav taws xob tiv thaiv hluav taws xob puas los yog tsis. Lub megger yog sib npaug rau 1000v lossis 500v generator. Cov xau tam sim no dhau los ntawm qhov ntsuas qhov ntsuas hauv lub megger, thiab qhov ntsuas qhov ntsuas hluav taws xob yog tsim los ntawm qhov tsis kam. Raws li ib txwm muaj, tus nqi ruaj khov ntau dua 0.5 megohm yog tsim nyog. Lub roj teeb hauv lub multimeter yog 9v rau 15v. Cov ntaub ntawv tiv thaiv thiab qhov hluav taws xob tsuas tuaj yeem txiav txim siab luv luv, thiab txiav txim siab seb puas muaj qhov xau.
1. Kev ntsuas hluav taws xob: tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, siv lub tshuab hluav taws xob multimeter nrog RX10K iav, ib qho kev xeem txhuas txuas nrog cov hlau nyob, thiab lwm qhov kev xeem cov hlau lead yog grounded (los yog faucet). Nws yuav tsum qhia infinite kuj, txwv tsis pub yuav muaj to.
2. Kev ntsuas nyob: siv lub multimeter nrog 250 volts ntawm AC voltage los ntsuas lub plhaub hlau ntawm cov khoom siv hluav taws xob uas xav tias yuav xau. Ib qho kev xeem txhuas txuas nrog lub plhaub, thiab lwm qhov kev xeem cov hlau lead yog hauv av (lossis lub faucet). Thaum tus taw tes qhia tias qhov hluav taws xob siab tshaj 30-50 volts, hloov mus rau AC 50 volts.
3. Kev ntsuas hluav taws xob ntawm cov xaim nyob thiab cov xaim nyob nruab nrab (lossis cov xaim nyob thiab cov xaim nyob): tua thiab txiav tawm tag nrho cov khoom siv hluav taws xob, ntsuas qhov kev tiv thaiv ntawm cov hlau nyob thiab cov xaim nruab nrab, nws yuav tsum tsis muaj qhov kawg, txwv tsis pub nws yog to.
Qhov tseeb ntawm cov txheej txheem saum toj no rau kev daws teeb meem yog 99.9 feem pua, uas yooj yim, ceev thiab siv tau. Lub megohm tshwj xeeb shaker tsuas yog siv hauv engineering, thiab kev siv tau zoo yog tsawg thaum tu. Tsuas yog thaum lub tshuab multimeter tau lees paub tias zoo, tab sis cov kab tsis xau, lub shaker yog siv, tab sis tsis tuaj yeem kuaj pom los ntawm multimeter.
