What is the maximum current rating of an induction meter? 

Induction energy meter

The meter which is used for measuring the energy utilized by the electric load is known as the energy meter.

Its working is based on the principle of electromagnetic induction.

It can handle current up to 100 A. 

Construction of Energy Meter

The energy meter has four main parts:

1.) Driving system

• The electromagnet is the main component of the driving system.
• The driving system has two coils: a current and a pressure coil.
• The current coil and pressure coil are connected in series with the load and in parallel with the supply respectively.
• The center limb of the magnet has a copper band. These bands are adjustable. The main function of the copper band is to align the flux produced by the shunt magnet in such a way that it is exactly perpendicular to the supplied voltage.

2.) Moving System

• The moving system is the aluminum disc mounted on the shaft of the alloy.
• The disc is placed in the air gap of the two electromagnets. The eddy current is induced in the disc because of the change in the magnetic field.
• This eddy current is cut by the magnetic flux. The interaction of the flux and the disc induces the deflecting torque.

3.) Braking system

• The permanent magnet is used for reducing the rotation of the aluminum disc.
• The aluminum disc induces the eddy current because of its rotation.
• The eddy current cuts the magnetic flux of the permanent magnet and hence produces the braking torque.
• This braking torque opposes the movement of the disc, thus reducing its speed.

4.) Registration (Counting Mechanism)

• The main function of the registration or counting mechanism is to record the number of rotations of the aluminum disc.
• Their rotation is directly proportional to the energy consumed by the loads in the kilowatt hour.