What is the wound type current transformer?

A wound type current transformer is a type of current transformer that is specifically designed for measuring and monitoring the current flowing through an electrical conductor. It operates on the principle of electromagnetic induction. Here is a detailed explanation:

1. Construction and Design: In a wound type current transformer, the primary winding is directly wound on the core. This primary winding carries the current to be measured, which induces a magnetic flux in the core. The primary winding is made up of a few turns of heavy wire, since it needs to carry the full current of the circuit, which can be quite substantial. The secondary winding, on the other hand, is wound over the core with many turns of fine wire and is connected to the measuring or protective device.

2. Operation: The operation of a wound type current transformer is based on Faraday’s law of electromagnetic induction. The alternating current flowing through the primary winding creates a varying magnetic flux in the core, which in turn induces a proportional but much smaller current in the secondary winding. Because the secondary winding has many more turns than the primary, the current is stepped down to a level that can be safely and conveniently used for measuring purposes without affecting the measurement accuracy.

3. Applications: Wound type current transformers are widely used in electrical power systems for various applications including:

– Measuring Purposes: They are used in ammeters, wattmeters, and power monitoring systems to measure the current flowing through a conductor accurately.

– Protection: