Ib qho yuam kev feem ntau yog muab cov kev xeem coj mus rau hauv cov jacks tam sim no thaum sim ntsuas qhov voltage. Tus nqi me me hauv DMMs tuaj yeem luv -circuit qhov voltage. Ib tug loj tam sim no ntws los ntawm lub digital multimeter. Yog hais tias lub multimeter tsis muaj kev tiv thaiv txaus, nws yuav tsis tsuas ua rau lub meter thiab Circuit Court puas, tab sis kuj ua mob rau tus neeg teb xov tooj. Hauv qhov siab -voltage circuits (480 volts lossis siab dua), muaj qhov txaus ntshai ntau dua.
Therefore, the digital multimeter should have a large enough current input protection fuse. Meters without current input fuses cannot be used in high energy circuits (>240V AC). Siv lub digital multimeter nrog lub fuse, lub fuse yuav tsum muaj lub peev xwm loj txaus.
tus nqi kom tshem tawm siab - zog ua txhaum. Qhov ntsuas hluav taws xob ntawm lub fuse yuav tsum siab tshaj qhov siab tshaj qhov koj xav tau. Piv txwv li, ib qho ntawm cov multimeters
Lub 20A, 250V fuse tsis tuaj yeem tiv thaiv multimeter thaum ntsuas 480V Circuit Court. A 20A, 600V fuse tuaj yeem ua lub luag haujlwm tiv thaiv thaum lub ntsuas ntsuas ntsuas 480V Circuit Court.
