There, reactive energy meter

Watthour meter
Energy can be converted into a variety of energy. Such as: electric furnace converted into heat, through the motor into mechanical energy, by converting a light bulb,

etc.. In these conversion of electricity consumed for the active energy. The record of this energy meter is active energy meter.
Reactive Electric energy meter
Electrical theory tells us that some electrical energy conversion device for converting served to create a environment, such as: motors, transformers, etc. must first

establish a magnetic field in order to make energy conversion, and some electrical devices is to first establish an electric field can be Energy Conversion

. Established energy magnetic and electric fields are required reactive power. The electric meter record such as reactive power meter. Reactive power in the

electrical device itself is not energy consumption, but will generate electrical lines reactive current, this current will be generated in the line

Certain loss. Reactive power meter is specifically record the loss, generally only the larger power unit before installation of such meters.