Q. What is the working principle of the current transformer?

Answer

When measured with an acceptable voltage transformer the operating principle of a current transformer appears to be different. It has two windings just like a standard voltage transformer. When alternating current is equipped throughout the foundation phase alternating magnetic flux is generated and alternating current is prompted across the secondary section. The load resistance is extremely low in this setup.Current transformers are used in the power system to measure high alternating currents. Current transformers are used in power system protection applications like activating protection relays.