Siv lub multimeter los ntsuas qhov ohm theem. Yog tias ib txwm, siv megger los qhia qhov luv luv.
Raws li peb txhua tus paub, cov twj tso kua mis submersible yog qhov yooj yim rau kev nkag mus rau hauv dej vim hnav cov ntsaws ruaj ruaj thaum siv. Qhov degree ntawm rwb thaiv tsev yuav raug txo thaum dej nkag.
Nws tsis tuaj yeem siv megger los ntsuas qhov rwb thaiv tsev ntawm lub twj tso kua mis submersible uas muaj dej puv. Vim tias qhov hluav taws xob ntawm lub megger yog qhov siab, xws li 500Ⅴ, 1000Ⅴ, 1500Ⅴ, 2000Ⅴ, thiab lwm yam, qee zaum lub twj tso kua mis submersible tsuas yog tau txais dej, tab sis qhov rwb thaiv tsev theem txo, thiab cov rwb thaiv tsev tsis puas. Yog tias koj siv lub megger los ntsuas qhov rwb thaiv tsev nyob rau lub sijhawm no, nws yuav ua rau cov rwb thaiv tsev tawg rau hauv av, nruab nrab ntawm theem, thiab nruab nrab.
Qhov voltage ntawm lub 'meter' siv yog tsawg heev, thiab lub twj tso kua mis submersible siv los ntsuas cov dej nkag tau zoo insulated. Lub sijhawm no, lub twj tso kua mis submersible tuaj yeem qhib kom qhuav. Nyob rau tib lub sijhawm, cov khoom sib khi yuav tsum tau hloov.
Tom qab ziab, 500V megger tuaj yeem siv los ntsuas qhov rwb thaiv tsev.
Co maj mam ua ntej thiab tom qab ntawd ntsuas ntawm qhov nrawm ntawm 120 kiv puag ncig ib feeb. (Lub rwb thaiv tsev ntawm av thiab theem yuav tsum siab tshaj 0.5 megohm ua ntej siv.
Qhov laj thawj yog yooj yim heev. Lub peev xwm ntawm lub multimeter yog me me thiab qhov ntsuas ntawm lub megohmmeter loj dhau. Lub megohmmeter tseem hu ua megohmmeter. Nyob rau hauv cov nqe lus ntawm megohms, qhov tsis kam ntawm lub twj tso kua mis dej tsis yog qhov loj. Hauv chav megohms, nws tuaj yeem tsis quav ntsej txhua, yog li saib Nws yog luv luv, tab sis nws tsis tuaj yeem kuaj pom.
1: Koj xav ntsuas qhov rwb thaiv tsev tiv thaiv
2: Ib qho multimeters tuaj yeem ntsuas qhov kev tawm tsam ntawm lub twj tso kua mis, tab sis tsis tuaj yeem ntsuas qhov rwb thaiv tsev ntawm lub plhaub.
3: Rwb thaiv tsev tiv thaiv yuav tsum tau ntsuas nrog megger.
4: Qhov tseem ceeb sib txawv ntawm ob yog qhov ua haujlwm voltage sib txawv
Lub tshuab hluav taws xob tes ua haujlwm hauv megohmmeter tsim 500v lossis 1000v voltage los ntsuas qhov hluav taws xob tawg hluav taws xob.
Qhov ua haujlwm voltage ntawm ib qho multimeter zoo tib yam yog 9V
Nws yog ib txwm siv lub multimeter los ntsuas cov dej twj tso kua mis hauv av luv luv Circuit Court teeb meem vim hais tias lub luag haujlwm tseem ceeb ntawm multimeter yog ntsuas kev txuas ntxiv, thiab nws tsis haum rau ntsuas kev tiv thaiv hluav taws xob, vim hais tias lub multimeter ntsuas qhov hluav taws xob tsawg txog li 9V thaum qhov sib txawv voltage yog loj heev, xws li los ntawm ntau txhiab ohms mus rau kaum ntawm megohms. Qhov ntsuas tam sim no yuav luag xoom yog li nws tsis tuaj yeem ntsuas qhov tseeb. Lub megometer feem ntau siv 5oov los ntsuas cov rwb thaiv tsev tiv thaiv (tsawg-voltage circuits, cov khoom siv hluav taws xob) kom raug ntau dua.
Lub multimeter tsuas tuaj yeem ntsuas qhov ntsuas tus nqi ntawm ntau txhiab ohms. Rau cov rwb thaiv tsev tsis kam, nws yuav tsum yog ob peb megohms. Lub multimeter tsuas tuaj yeem kuaj qhov rwb thaiv tsev nyob rau hauv qis DC voltage. Lub megohmmeter yuav siv qhov hluav taws xob siab dua li kev siv ib txwm siv los kuaj. Ntau yam nyob rau hauv ib txwm muaj, tsis tshua muaj hluav taws xob yuav tsis ua rau to, thiab high voltage yuav qhia to. Txhawm rau kuaj xyuas cov khoom siv hluav taws xob zoo, megohmmeter yog ib qho cuab yeej tshwj xeeb.
