Electrical Engineering

Instrument Transformers

How Current Transformer (CT) Works?

Learn how a Current Transformer (CT) works, its types, applications, and importance in power systems for safe and accurate current measurement.

How Current Transformer (CT) Works?

A Current Transformer (CT) is an essential component in electrical systems, providing an accurate method for measuring current. It is widely used in power transmission and distribution systems , industrial plants, and electrical protection systems to monitor electrical current without directly measuring the high currents flowing through the primary conductors. This article will explore in detail how a current transformer works, its components, its applications, and technical considerations, with a thorough explanation and real-life examples. 1. Introduction to Current Transformers (CT) A Current Transformer (CT) is a type of transformer that is designed to measure high alternating currents in power systems by stepping them down to a safer, lower level that can be directly measured. CTs play a pivotal role in modern electrical systems by enabling measurement, protection, and control. They are commonly used in power grids , electrical substations , industrial setups, and consumer electrical …

About the author

Prasun Barua is a graduate engineer in Electrical and Electronic Engineering with a passion for simplifying complex technical concepts for learners and professionals alike. He has authored numerous highly regarded books covering a wide range of elec…

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