What is the difference between the Electromechanical Active Energy Meter and reactive watt hour meter? Electrical energy can be converted into a variety of energy. Such as: through the electric stove into heat energy, through the motor into mechanical energy, through the lamp into light energy, etc.. The energy consumed in these transformations is the active power. The electric meter for recording the electric energy is an active watt hour meter.

Electrical principle tells us that some of the electrical energy conversion device in the first to establish a conversion environment, such as motor, transformer and so on to create a magnetic field to energy conversion, and some electrical equipment is to set up a field to energy conversion. The electric energy needed to build the magnetic field and electric field is reactive power. The electric energy meter for recording the electric energy is a reactive power meter. Reactive power can not consume energy in the electrical equipment itself, but it will produce reactive current in the electrical circuit. Reactive power meter is a special record of this loss, usually only a larger unit to install this meter.

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