Cov qauv thiab kev ua haujlwm ntawm lub clamp ammeter thiab nws cov nqi taw qhia
Thaum peb cov kws tsim hluav taws xob yuav tsum ntsuas qhov tam sim no yam tsis muaj kev cuam tshuam lub voj voog, peb yuav tsum siv clamp ammeter (qee zaus hu ua clamp meter, clamp meter). Lub clamp ammeter yog ib qho cuab yeej siv los ntsuas qhov tam sim no hauv lub voj voog hluav taws xob, thiab nws yog ib qho cuab yeej siv los ntsuas rau cov hluav taws xob. Clamp ammeters muab faib ua ob pawg: clamp AC ammeters thiab clamp AC / DC meters, qee qhov tuaj yeem ntsuas AC voltage.
Cov qauv thiab kev ua haujlwm ntawm lub clamp ammeter:
Lub clamp AC ammeter yog qhov tseem ceeb ntawm kev hloov pauv tam sim no thiab cov cuab yeej rectifier. Cov xaim nqa tam sim no yuav tsum tau ntsuas yog sib npaug rau qhov qub winding ntawm tam sim no transformer, thiab qhov thib ob winding ntawm tam sim no transformer yog nyob rau hauv cov tub ntxhais hlau. , qhov thib ob winding txuas nrog lub ntsuas hluav taws xob ntawm cov txheej txheem rectification. Raws li ib qho kev sib raug zoo ntawm cov thawj thiab theem nrab windings ntawm tam sim no transformer, lub rectifier ntsuas tuaj yeem tso saib tus nqi tam sim no ntawm cov kab ntsuas.
Lub clamp AC-DC meter yog ib qho cuab yeej siv hluav taws xob. Kev ntsuas tam sim no-nqa hlau muab tso rau hauv lub puab tsaig ua raws li lub zog coil, thiab cov hlau nplaum sib nqus ua ib lub voj hauv cov tub ntxhais hlau. Deflect, tau txais kev nyeem ntawv. Vim tias qhov deflection tsis cuam tshuam los ntawm kev ntsuas tam sim no, nws tuaj yeem ntsuas AC thiab DC tam sim no.
Clamp Meter Specifications
Muaj ob hom clamp meters, analog thiab digital. Standard hom nrhiav tau ntau yam: AC thiab DC nyob ib ncig ntawm 20A txog 200A lossis 400A, kuj tseem muaj cov khoom lag luam uas tuaj yeem ntes cov tam sim no loj ntawm 2000A; kuj tseem muaj cov khoom siv hluav taws xob uas tuaj yeem ntes cov me me tam sim no ntawm ob peb mA, cov khoom siv hluav taws xob hloov hluav taws xob, thiab cov khoom siv hluav taws xob hloov Cov khoom siv ntawm qhov muaj txiaj ntsig zoo (TRUERMS) ntawm non-sine waves uas tsis yog sine waves.
4. Yuav siv li cas
(1) Kev kho tshuab xoom yuav tsum tau ua ntej ntsuas
(2) Xaiv qhov tsim nyog, xaiv qhov loj ua ntej, thiab tom qab ntawd xaiv qhov me me lossis saib daim ntawv teev npe rau kev kwv yees.
(3) Thaum ntsuas qhov tsawg kawg nkaus yog siv los ntsuas thiab kev nyeem ntawv tsis pom tseeb, qhov ntsuas ntsuas tuaj yeem raug mob ob peb zaug, thiab tus lej hloov yuav tsum yog raws li tus lej ntawm lub puab tsaig, tom qab ntawd nyeem ntawv=qhia tus nqi × ntau yam / tag nrho sib txawv × tig Tom qab tus lej (4) raug ntsuas, muab qhov hloov pauv mus rau qhov siab tshaj plaws.
(5) Thaum ntsuas, cov hlau nyob hauv kev sim yuav tsum nyob hauv nruab nrab ntawm lub puab tsaig, thiab lub puab tsaig yuav tsum raug kaw kom nruj kom txo tau qhov yuam kev.
5. Cov teeb meem xav tau kev saib xyuas
(1) Qhov voltage ntawm kab nyob rau hauv kev ntsuam xyuas yuav tsum qis dua qhov ntsuas voltage ntawm lub ntsuas clamp.
(2) Thaum ntsuas qhov tam sim no ntawm cov kab hluav taws xob siab, hnav cov hnab looj tes insulating, hnav cov khau insulating, thiab sawv ntawm insulating lev. (3) Lub puab tsaig yuav tsum raug kaw kom nruj thiab tsis tuaj yeem hloov pauv nrog hluav taws xob.
