This meter is able to perform current, voltage and power measurements in three phase supply systems. Whenever the braking and driving torques become equal, the speed of the disc becomes steady. A braking magnet is placed over one side of the disc, which produces a braking torque on the disc by a constant field provided by using a permanent magnet. The interface of these two fields produces eddy current in the disk, utilizing a force, which is proportional to the product of instantaneous voltage, current and the phase angle between them. These two fluxes lag at 90 degrees due to inductive nature. Series magnet produces a flux which is proportional to the flowing current, and shunt magnet produces a flux proportional to the voltage. Single Phase Electromechanical Induction Energy meter Series magnet carries a coil which is of a few turns of thickness wire connected in series with the line whereas the shunt magnet carries a coil with numerous turns of thin wire connected across the supply.īraking magnet is a kind of permanent magnet that applies the force opposite to the normal disc rotation to move that disc a balanced position and to stop the disc while power gets off. It is made of two silicon steel laminated electromagnets: shunt and series magnets.

The rotation speed of the disc is proportional to the power, and this power is integrated by the use of gear trains and counter mechanism. It comprises a rotating aluminum disc placed on a spindle between two electromagnets. It is a well-known and most common type of age-old energy meter. Single Phase Electromechanical Induction Energy Meter Particularly in this article, we are going to study about the working principles of single-phase electromechanical induction type energy meter and also about three-phase electronic energy meter from the explanation of two basic energy meters as described below. The electricity supply connection may be either single phase or three phase depending on the supply utilized by the domestic or commercial installations.

Technical aspects like single phases, three phases, High Tension (HT), Low Tension (LT) and accuracy class materials.End applications like commercial, industrial and domestic purpose.Types of metering points: secondary transmission, grid, local and primary distribution.Types of displays analog or digital electric meter.Energy meters are classified into two types by taking the following factors into considerations:

Digital electric meter function