방법 a 클램프 미터 작동
The measured circuit wire passing through the iron core becomes the primary coil of the current transformer, and the current is induced in the secondary coil by passing the current. So that the ammeter connected to the secondary coil has an indication ----- measure the current of the line under test. The clamp meter can be changed to different ranges by changing the gear of the switch. But it is not 허용 to 작동 with 전기 언제 변속 기어. The clamp meter is generally not high in accuracy, usually 2.5 to 5 grades. for the convenience of use, there are switches of different ranges in the meter for the function of measuring different levels of current and measuring voltage.
