Induction Type Energy Meter - Overview

An induction type energy meter is used to measure the electrical energy consumed by an AC circuit. It operates on the principle of electromagnetic induction. The meter consists of two coils, namely, the voltage coil and the current coil. The voltage coil is connected in parallel with the load, and the current coil is connected in series with the load.

Pressure Coil of Induction Type Energy Meter

The pressure coil of an induction type energy meter is also known as the voltage coil. It is connected in parallel with the load and carries the line voltage. The construction of the pressure coil is similar to that of a transformer winding. It consists of a few turns of thick wire wound on a laminated core.

Characteristics of Pressure Coil

The pressure coil of an induction type energy meter is highly inductive. This is because of the following reasons:

- The pressure coil has a large number of turns, which increases its inductance.
- The laminated core of the pressure coil reduces the eddy current losses, which further increases its inductance.
- The pressure coil is wound with a thick wire, which has a low resistance and a high reactance.

The high inductance of the pressure coil causes the current to lag behind the voltage. This lagging current creates a magnetic field that interacts with the current coil and produces a torque, which is proportional to the energy consumed by the load.

Conclusion

In conclusion, the pressure coil of an induction type energy meter is highly inductive. Its inductance causes the current to lag behind the voltage, which creates a magnetic field that interacts with the current coil and produces a torque, which is proportional to the energy consumed by the load.

Pressure coil means voltage coil.