Abstract
Rogowski coil (RC) also known as air-cored was suggested in 1912 and was introduced by German physician Walter Rogowski. This coil is developed for the measurement of alternating and transient high currents, it has the capability of measurement from a few milliamperes to more than 1MA. The advancement of technology and use of microprocessor-based modern signal processing devices have coursed improvement of the Rogowski coil and extended its applications in various places. This article will provide an overview of the theory of Rogowski coils and its high current applications. initially, the article discusses the principles and basics of high current Rogowski coils, explaining their design, construction, and operation. Besides, the research study explores the various high current applications of this coil. its uses overlap from laboratory testing to industrial equipment, Rogowski coils find Usefulness in fault detection, partial discharge measurement, and lightning current detection, surpassing traditional current sensing devices in aspects of speed, accuracy, and reliability. As a result, it is a valuable resource for academics, engineers, and practitioners looking to use this adaptive technology in a wide range of commercial and scientific activities.