What is a Current Transformer?
To measure high AC current, using an ammeter directly is impractical and potentially hazardous due to the elevated currents involved. Instead of employing an ammeter directly, a current transformer is utilized. A current transformer falls under the category of Instrument Transformers. With the assistance of a current transformer, the measurement of high AC current becomes feasible and safe. The primary function of a current transformer is to step down the high AC current, enabling its safe transmission to measuring instruments, relays, or other monitoring devices. It operates on the same principle as a normal transformer, a concept that will be further discussed in the working part.
The principle of the current transformer is the same as that of a normal transformer; it follows the law of Electromagnetic Induction. (Electromagnetic Induction: a varying magnetic field induces an electromotive force (EMF) or voltage in a conductor).
Current Transformers
In this article, we will discuss what is A current Transformer?, Construction of the Current Transformer, Its Working, Phasor Diagram, Errors in the current Transformer, and Its Types, and At last we will conclude this article With its advantages, disadvantages, Application, and FAQs.
Table of Content
- What is a Current Transformer?
- Construction of the Current Transformer
- Working of Current Transformer
- Phasor Diagram of Current Transformer
- Current Transformer Errors
- Reduction of Errors in Current Transformer
- Types of Current Transformers