Thaum siv lub clamp-hom ammeter txhawm rau txhawm rau ntsuas tam sim no, nco ntsoov ua rau ib qho khoom siv (xaim) hauv kev sim. Yog hais tias ob (cov xov hlau sib txuas) yog sandwiched, tam sim no tsis tuaj yeem kuaj pom. Tsis tas li ntawd, thaum siv qhov chaw (hlau core) ntawm lub clamp-hom ammeter los kuaj xyuas, qhov kev ua yuam kev me me. Thaum kuaj xyuas lub zog ntawm cov khoom siv hauv tsev, nws yooj yim dua los siv cov kab sib cais. Qee cov kab sib cais tuaj yeem nthuav dav qhov kev tshawb pom tam sim no los ntawm 10 zaug, yog li tam sim no hauv qab 1A tuaj yeem nthuav dav thiab tom qab ntawd kuaj pom. Siv lub DC clamp ammeter los kuaj xyuas DC tam sim no. (DCA), yog tias tam sim no ntws mus rau qhov sib txawv, nws yuav qhia tus lej tsis zoo. Txoj haujlwm no tuaj yeem siv los txheeb xyuas seb lub tsheb lub roj teeb puas raug them lossis tso tawm.
Kev kuaj pom tseeb RMS
Qhov nruab nrab tus nqi hom clamp ammeter kuaj pom tus nqi nruab nrab ntawm sine yoj los ntawm AC nrhiav pom, thiab qhia tus nqi tom qab magnifying 1.11 zaug (sine yoj AC) raws li tus nqi zoo. Nws kuj tseem tshwm sim tom qab nthuav dav los ntawm 1.11 zaug, yog li yuav muaj qhov qhia yuam kev. Yog li ntawd, thaum kuaj pom waveforms uas tsis yog sine waves thiab crooked waves, thov siv lub clamp-on ammeter uas tuaj yeem kuaj ncaj qha tus nqi RMS.
Kev kuaj pom pom
Sib txawv ntawm qhov kev tshawb pom tam sim no, kev tshawb nrhiav pom yuav tsum muaj ob (ib theem 2-hlau hom) los yog peb (ib theem 3-hlau hom, peb theem 3-xov hom) yuav tsum tau clamped tag nrho ua ke. Nws tseem tuaj yeem kuaj tau los ntawm clamping cov xaim hauv av. Txoj kev tswj kev thaiv hluav taws xob txhawm rau txhawm rau txhawm rau tam sim no ntawm cov hluav taws xob qis hluav taws xob tau dhau los ua qhov tseem ceeb ntawm kev txiav txim siab. Nyob rau hauv lub Hoobkas, cov dej ntws tam sim no clamp meter yog maj mam siv los tshawb pom.
