The current clamp meter has one more head than the common multimeter. This head is made according to the principle of the current transformer. It is specially used for measuring the AC-DC current. The working principle is as follows: The current measuring part of the current clamp meter is composed of the current measuring part of the current transformer and the multimeter. The core of the transformer has a movable part and is connected to the handle. Press the handle to open the movable core when in use. The current can be measured by incorporating the conductor of the measured current into it.
The working part of the current clamp meter is mainly composed of an electromagnetic ammeter and a core current transformer. Through the core of the current transformer core made of movable opening, and into a clamp shape, so named clamp ammeter. It is a portable instrument that can directly measure the AC current of the circuit without disconnecting the circuit. It is very convenient to use in electrical maintenance and widely used.
Current clamp meter
The current clamp meter is actually a current transformer. The stuck wire is equivalent to the primary coil of the transformer. When there is current in the wire, magnetic flux will be generated in the iron core of the meter, and then the current is induced in the secondary coil of the meter, which is equal to the current in the primary coil.
Current clamp meter current measurement steps:
(1) Before measuring the line to be measured, the data of the clamp table should be zeroed to prevent errors in the subsequent measurement;
(2) After determining the voltage of the line to be measured, select the appropriate range;
(3) Press the wrench on the side of the pliers table to open the pliers mouth, place the line to be tested in the center of the pliers mouth, and close the pliers mouth;
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