Ib txoj hauv kev yooj yim los ntsuas seb qhov hluav taws xob xau nrog lub multimeter
Siv ib lub tshuab ntsuas ntsuas los ntsuas seb 220V kab puas. Txoj kev yooj yim tshaj plaws yog txiav tawm lub hwj chim ua ntej, muab lub multimeter mus rau qhov hluav taws xob thaiv (500 ohms), txuas cov hlau nruab nrab thiab cov xaim nyob rau hauv av xaim nrog ob tus cwj mem ntawm multimeter, yog tias qhov ntsuas tau yog 0, yog li ntawd. koj tuaj yeem txiav txim siab seb cov xaim twg yog grounded, thiab yuav muaj qhov xau.
Txhawm rau ntsuas seb 220V kab xau los yog tsis, nws yuav tsum raug siv 500V lossis 1000V shake meter los ntsuas seb nws puas yog. Nws tsis tsim nyog siv multimeter los ntsuas seb puas yog 220V kab xau. Kuaj nrog ob tug ncej to Circuit Court breaker nyob rau hauv ib txwm siv. Txuas lub to Circuit Court breaker thiab kaw lub to Circuit Court breaker kom qhib tam sim ntawd, thiab nws pib dua khawm protrudes dua (Faj seeb: Yog hais tias lub reset khawm tsis protrude, nws yog overload tiv thaiv thiab luv luv Circuit Court mus txawv tebchaws) proves tias muaj to nyob rau hauv lub kab. Txoj kev no yog qhov yooj yim thiab raug.
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 tsis muaj zog AC tam sim no, thiab nws muaj teeb meem los ntsuas qhov tsis raug. Yog tias koj hais kom ntsuas, koj yuav tsum siv lub tshuab hloov tam sim no. Siv lub ntsuas ntsuas ntsuas los ntsuas, tab sis xaiv lub ntsuas ntsuas ntsuas nrog qhov tsim nyog thiab muaj txiaj ntsig zoo dua.
Yog tias koj xav tias qhov hluav taws xob xau, koj tuaj yeem siv lub Circuit Court breaker nrog kev tiv thaiv los ntawm kev 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.
Yog tias qhov rwb thaiv tsev ntawm txoj kab puas lawm, nws tuaj yeem pom qhov muag pom, thiab nws tuaj yeem ua rau lub sijhawm ntawd. Lwm qhov xwm txheej yog tias daim tawv nqaij yob tsis raug puas, tab sis nws yog me ntsis tawg, ua rau qee qhov av ntub dej, lossis qhov chaw puas tau muab zais heev, thiab tib neeg tsis tuaj yeem pom nws ntawm qhov muag liab qab. Lub sijhawm no, koj tuaj yeem txiav tawm lub zog ntawm txoj kab thiab co ncaj qha nrog lub shaker. Rau cov hluav taws xob qis qis, yuav tsum siv 500 volt megger. Ntsuas tiv thaiv hauv av, yog tias cov rwb thaiv tsev tsawg dua 0.5 megohms. Nws tuaj yeem suav hais tias cov rwb thaiv tsev tsis zoo heev thiab yuav tsum tau kuaj xyuas ib ntus. Ib yam uas yuav tsum nco ntsoov yog tias thaum ntsuas nrog lub megger, tsis muaj cov khoom siv hluav taws xob tuaj yeem txuas rau hauv Circuit Court. Txwv tsis pub, qhov ntsuas tus nqi yuav tsis raug.
Yog tias koj siv lub multimeter los kuaj xyuas qhov xau. Tej zaum tsis yog lawm. Vim hais tias qhov voltage ntawm lub dav dav meter yog tsawg heev. Tsuas yog thaum qhov xau loj heev tuaj yeem kuaj pom.
Cia kuv hais ib yam dab tsi uas tsis yog cov ntsiab lus, nws yog qhov zoo tshaj plaws los siv lub qhov hluav taws xob tiv thaiv hluav taws xob rau lub qhov (socket) hauv tsev. Nyob rau hauv txoj kev no, ib zaug ib qho kev xau tshwm sim, lub zog hluav taws xob tuaj yeem txiav tawm sai sai kom ntseeg tau tias kev nyab xeeb ntawm tus kheej.
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 ntsuas ntsuas nrog 250-volt AC voltage ntau 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 pointer qhia qhov voltage siab dua 30-50 volts, hloov nws Siv AC 50 volts. Yog tias cov khoom siv hluav taws xob tau lees paub tias siab dua 30 volts, nws yog qhov xau, thiab qis dua 30 volts yog qhov qub. Tom qab ntawd hloov lub xoom thiab hluav taws xob hluav taws xob ntsaws cov xov hlau thiab ntsuas dua kom paub meej.
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, yooj yim, ceev thiab siv tau, thiab megohm tshwj xeeb shaker tsuas yog siv hauv engineering, thiab kev siv kev ua haujlwm tsawg hauv kev saib xyuas. Tsuas yog thaum lub multimeter tau lees paub tias yog qhov zoo, tab sis cov kab yog qhov tseeb, nws tuaj yeem siv Shake lub 'meter', tab sis tsis tuaj yeem kuaj pom los ntawm multimeter.
