Electromechanical KWh Meter , also known as induction single-phase electric energy meter, is designed using the principle of electromagnetic induction.
When the watt-hour meter is connected to the circuit under test, the voltage U of the circuit under test is applied to the voltage coil, and an alternating magnetic flux is formed in the iron core. A part of this magnetic flux ΦU passes through the aluminum plate from the return magnetic pole to the return. To the iron core of the voltage coil; in the same way, after the current I of the circuit under test passes through the current coil, an alternating magnetic flux Φi is also formed in the U-shaped iron core of the current coil. This magnetic flux is formed by U to one end of the iron core Pass through the aluminum plate from bottom to top, and then pass through the aluminum plate from top to bottom to return to the other end of the U-shaped iron core. The electric circuit and magnetic circuit of the watt-hour meter. Among them, the regenerative plate 4 is punched out of steel plate, and its lower end extends into the lower part of the aluminum plate, corresponding to the iron core column between the aluminum plate and the voltage component, to form a voltage coil The loop of working magnetic flux.
The above is the working principle of the Electromechanical KWh Meter. There is also an electronic type of watt-hour meter, and a three phase meter is an electronic type of electric energy meter. yhddb.com