Yuav ua li cas siv lub clamping ammeter
Thaum siv lub clamp ammeter txhawm rau txheeb xyuas qhov tam sim no, nws yog ib qho tsim nyog yuav tsum tau clamp ib qho ntawm cov xov hlau kuaj (xaim). Yog tias ob txoj hlua txuas txuas txuas tau raug kaw, qhov tam sim no tsis tuaj yeem kuaj pom. Tsis tas li ntawd, thaum siv qhov chaw (hlau core) ntawm lub clamp ammeter rau kev kuaj pom, qhov kev kuaj pom qhov yuam kev me me. Thaum kuaj xyuas lub zog siv ntawm cov khoom siv hauv tsev, siv lub tshuab cais tawm yooj yim dua. Qee cov hlau sib cais tuaj yeem ua kom pom qhov tam sim no los ntawm 10 zaug, yog li tam sim no hauv qab 1A tuaj yeem nthuav dav ua ntej kuaj pom. Thaum siv DC clamp ammeter txhawm rau txheeb xyuas DC tam sim no (DCA), yog tias qhov kev taw qhia tam sim no rov qab, nws yuav pom tus lej tsis zoo. Qhov kev ua haujlwm no tuaj yeem siv los txheeb xyuas seb lub tsheb lub roj teeb puas nyob hauv lub sijhawm them lossis tso tawm
Kev kuaj pom tseeb RMS
Lub clamp ammeter nrog qhov nruab nrab tus nqi txoj kev kuaj pom tus nqi nruab nrab ntawm sine yoj los ntawm AC nrhiav pom, thiab qhia tus nqi tom qab amplification los ntawm 1.11 zaug (sine yoj AC) raws li tus nqi zoo. Waveforms thiab skewed nthwv dej nrog sib txawv waveform tus nqi uas tsis yog sine waves kuj tau tshwm sim tom qab amplification los ntawm 1.11 zaug, uas yuav ua rau cov cim qhia yuam kev. Yog li ntawd, thaum kuaj pom waveforms thiab skewed nthwv dej uas tsis yog sine waves, thov xaiv lub clamp ammeter uas tuaj yeem kuaj ncaj qha tus nqi zoo.
Kev kuaj pom dej
Kev kuaj pom qhov sib txawv ntawm qhov kev kuaj pom tam sim no, qhov twg ob (ib theem 2- xov) lossis peb (ib theem 3- hlau, peb theem 3- hlau) yuav tsum tau clamped ua ke. Nws tseem ua tau kom clamp lub grounding hlau rau kev kuaj. Txoj kev tswj kev rwb thaiv tsev rau kev txheeb xyuas cov xau tam sim no ntawm cov hluav taws xob qis hluav taws xob tau dhau los ua qhov tseem ceeb ntawm kev txiav txim siab. Txij li thaum nws qhov kev pom zoo los ntawm xyoo 1997 hloov kho ntawm cov cuab yeej siv hluav taws xob, cov khoom siv hluav taws xob tam sim no tau maj mam siv rau kev sim hauv cov tsev thiab cov chaw tsim khoom uas tsis tuaj yeem txiav hluav taws xob.
