Rogowski coil, named after the German scientist Walther Rogowski, is an electromagnetic measuring device used for measuring alternating currents in electrical circuits. Unlike traditional coils, the Rogowski coil has a flexible and open design, allowing it to surround a conductor with current without the need for physically interrupting the circuit. This flexibility enables easy and safe measurements in various types of electrical systems. Rogowski coils are often used in high-performance electrical systems such as power distribution networks, industrial equipment, and monitoring systems.

Their ability to measure high values of alternating currents with high precision without the need for interrupting the conductor is significant for monitoring and diagnosing electrical networks. Rogowski coils also offer the advantage of easy installation and straightforward connection to measuring devices, enhancing their flexibility and practicality in various application scenarios.