The Secondary Wire Type Current Transformer (CT) is a specialized instrument transformer designed for accurate current measurement and energy metering in electrical systems. By utilizing electromagnetic induction principles, it safely steps down high primary currents to standardized, measurable secondary levels (typically 1A or 5A), enabling precise monitoring, billing, and protection in commercial, industrial, and utility applications. Its robust construction and advanced design ensure reliability in diverse environments, from smart grids to manufacturing facilities.

CT (Current Transformer) metering has emerged as an indispensable technology in the field of electrical power measurement and monitoring. With its ability to accurately measure current levels in high-voltage systems, CT metering plays a pivotal role in ensuring reliable and efficient energy distribution. In this article, we will delve into the technical aspects of CT metering, exploring its working principles, benefits, and the latest advancements driving its widespread adoption.

Common-mode choke: In the common filter, usually only one common-mode choke is installed, and the leakage inductance of the common mode choke is used to generate an appropriate amount of differential mode inductance,

Wound Current Transformer – The transformers primary winding is physically connected in series with the conductor that carries the measured current flowing in the circuit. The magnitude of the secondary current is dependent on the turns ratio of the transformer.