An electric energy meter is a meter used to measure electrical energy, also known as an electric meter, fire meter, kilowatt-hour meter, and refers to a meter that measures various electrical quantities. The invention of electricity has benefited millions of households. Every household needs to use electricity. The electric energy meter is measured before the electricity company charge. The electric energy meter is installed by the power supply department, which sets the parameters of the display and billing program. The data is automatically uploaded or read by the billing department, and the user is not allowed to operate it. Here is a small introduction to how to see and read the electric energy meter, what is the principle?

I. How to see and read an electric energy meter?

Electric meters generally display multiple data in cycle. If users want to know how many kilowatt hours have been used, they can read "Current Combined Active Total Power " and "Previous Month Combined Active Total Power" in its circular display. The difference between the two readings is the number of kilowatt hours used this month. Eight digits are shown here, the first six are integer digits and the last two are decimal digits. The unit is kwh, which is the number of kilowatts.

II. What's the working principle of electric energy meter?

Firstly, after the electric energy meter is connected to the circuit, alternating current is generated in the voltage coil and current coil, and the alternating current generates alternating magnetic flux in its iron core; secondly, the alternating magnetic flux generates eddy current in the aluminum disk; and then, the eddy current in the aluminum disk is subject to the force in the magnetic field, which makes the aluminum disk rotate; finally, the rotation of the aluminum disk drives the counter and the electrical energy consumed is reflected in digital form.

The larger power consumed by the load, the larger alternating current generated in the voltage and current coils , the larger eddy current generated in the aluminum disk, and the larger torque of the aluminum disk rotation. Conversely, the smaller power consumed by the load, the smaller alternating current generated in the voltage and current coils, the smaller eddy current generated in the aluminum disk , and the smaller torque of the aluminum disk rotation, and thus the fewer the count.

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