Ib tug multimeter tuaj yeem siv los ntsuas qhov zoo ntawm lub cev muaj zog
Lub multimeter tuaj yeem ntsuas AC voltage, DC voltage, AC tam sim no, DC tam sim no, tsis kam thiab capacitance, qib buzzer, diode, thiab lwm yam. Nws kuj muaj qhov ntse tiv thaiv kev kub hnyiab tiv thaiv tsim, tsis siv neeg kaw, thiab lwm yam. Nws tuaj yeem hais tias muaj nuj nqi heev. muaj zog. Rau ib tug zoo tib yam electrician, nws yog kiag li txaus. Cov kev txwv tshwj xeeb yog tag nrho cov npe hauv cov lus, yog li kuv yuav tsis mus rau hauv kev nthuav dav.
Puas tuaj yeem siv multimeter los ntsuas qhov zoo ntawm lub cev muaj zog? Peb yuav ntsuas nws li cas?
Kuv xav tias qhov no yuav tsum tau saib hauv ob yam. Yog hais tias muaj luv luv Circuit Court ntawm coils, tig los tig luv luv Circuit Court, los yog qhib Circuit Court, cov no yuav raug ntsuas nrog ib tug multimeter. Yog hais tias nws yog ib tug luv luv Circuit Court rau hauv av los yog ib tug to hauv av, lub rwb thaiv tsev tiv thaiv tus nqi nyob rau hauv no hais txog yuav tsum tau ntsuas los ntawm ib tug megohmmeter (Insulation resistance meter, megger).
Cia kuv piav qhia luv luv hauv qab no: siv multimeter los ntsuas qhov luv luv ntawm lub cev muaj zog coils, nrog rau luv luv Circuit Court thiab qhib Circuit Court ntawm coil tig.
Lub cev muaj zog tuaj yeem loj lossis me, tab sis peb-theem motors yog tag nrho ntawm peb windings. Nws yog ib qho tseem ceeb rau kev ntsuas tus nqi tsis kam ntawm peb-theem winding los txiav txim seb lub cev muaj zog puas yog. Qhov kev tiv thaiv qhov tseem ceeb ntawm peb-theem windings sib txawv nyob ntawm lub zog ntawm lub cev muaj zog, tab sis lawv qhov kev tiv thaiv qhov tseem ceeb tsis txawv txav, feem ntau ntawm 2 thiab 5 ohms.
Feem ntau, peb-theem motors muaj 6 terminals, tab sis rau qee qhov uas muaj lub zog qis, cov chaw tsim khoom tau tsim lub hnub qub lossis lub kaum sab xis hauv lub cev muaj zog, thiab tsuas muaj peb lub terminals hauv lub thawv sib txuas. Txoj kev tshawb nrhiav rau hom lub cev muaj zog yog tib yam li txoj kev tshawb nrhiav rau 6 lub terminals, tshwj tsis yog rau lub voj voog luv luv ntawm cov kauj ruam, uas cov kws hluav taws xob zoo tib yam tsis tuaj yeem ntes tau.
Ua ntej ntsuas, peb thawj zaug yuav tsum tau txiav lub hwj huam mov thiab tshem tawm cov khoom sib txuas. Piv txwv tias peb kab saum toj kawg nkaus yog qhov pib thiab peb kab hauv qab yog qhov kawg. Nws tsis yooj yim rau siv cov tsiaj ntawv thaum pib thiab xaus rau kev ntaus ntawv, yog li kuv tau muab lub npe pib ua 1, 3, 5, thiab qhov kawg li 2, 4, thiab 6.
Vim peb tsis paub tus nqi kuj ntawm peb-theem windings, peb thawj zaug teem lub multimeter mus rau ib tug tej yam kev tiv thaiv, thiab thaum kawg nrhiav tau qhov tsim nyog ntau yam los ua ib tug raug kev sib piv.
Tom qab pom cov iav tsim nyog, ntsuas qhov ntsuas qhov ntsuas ntawm thawj peb theem windings cais. Yog hais tias qhov sib txawv ntawm qhov tseem ceeb ntawm kev tiv thaiv ntawm peb theem windings tsis tseem ceeb thiab nyob rau hauv ib qho kev tsim nyog, peb ntseeg tias qhov tseem ceeb ntawm qhov kev tiv thaiv ntawm peb theem windings yog qhov qub. Kuv yeej tsis paub meej. Peb tuaj yeem ntsuas qhov kawg thiab ua qhov sib piv kom ntseeg tau tias txhua yam muaj kev nyab xeeb.
Qhov teeb meem ntawm peb-theem windings yog qhov yooj yim los daws. Kev kuaj xyuas qhov sib cuam tshuam ntawm lub kauj yog qhov teeb meem.
Cia peb tham txog inter turn short circuits ua ntej. Lub phenomenon ntawm inter tig luv Circuit Court yog tias lub cev muaj zog yog nyob rau hauv lub zos rhuab thiab peb-theem tam sim no yog unbalanced. Thaum ntsuas nrog lub ntsuas ntsuas, qhov luv-circuit tam sim no ntau dua. Siv lub multimeter los ntsuas qhov ntsuas qhov tseem ceeb ntawm qhov pib thiab qhov kawg ntawm peb-theem kauj, thiab qhov luv-circuit theem yog me dua.
Yog tias muaj qhov qhib Circuit Court ntawm lem, qhov kev tawm tsam ntawm qhov pib thiab qhov kawg ntawm lub coil winding yuav tsum tsis muaj kawg lossis loj heev.
Yog hais tias lub kauj yog luv luv Circuit Court rau hauv av los yog muaj to, ib tug megohmmeter yuav tsum tau. Vim tias qhov voltage theem ntawm lub multimeter tsawg dhau, cov ntaub ntawv raug ntsuas tsis tuaj yeem ntsuas.
Txhawm rau ntsuas cov khoom siv hluav taws xob tsawg lossis hluav taws xob, peb tuaj yeem xaiv 500 megohmmeter.
