What are the functions of clamp ammeter
A clamp ammeter is a combination of a current transformer and an ammeter. The iron core of the current transformer can be opened when the wrench is tightened; The wire through which the measured current passes can pass through the tested circuit wire of the iron core, which becomes the primary coil of the current transformer, and the current is induced in the secondary coil by the current passing through it.
When measuring current with a regular ammeter, it is usually necessary to cut off the circuit and stop the machine before connecting the ammeter for measurement. This is very troublesome, and sometimes it is not allowed to do so for normally running motors. At this point, using a clamp ammeter becomes much more convenient as it can measure current without cutting off the circuit.
The clamp gauge can be changed to different ranges by shifting the switch. But it is not allowed to operate with electricity when shifting gears. Clamp gauges generally have low accuracy, typically ranging from 2.5 to 5 levels. For ease of use, there are also conversion switches with different ranges inside the meter for measuring different levels of current and voltage.
The clamp meter was originally used to measure alternating current., But now multimeters also have some functions, such as measuring AC/DC voltage, current, capacitance, diodes, transistors, resistors, temperature, frequency, and so on.
Clamp on ammeters can measure photovoltaic DC current and inverter output AC current. It should be noted that some clamp on ammeters do not have DC function, and the jaws should be tightly closed to prevent live range switching.
