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Product Solutions – Rogowski Coils for Accurate AC Current Measuring

Rogowski coils Ideal for High Current Metering Applications

Rogowski coils are wire wound “air” core toroids which are used to measure AC current. The AC current that is measured creates a magnetic field which induces a voltage in the coil that is proportional to the change in current. This innovative technology has been used in high current metering applications with a very high accuracy.

A conductor which carries the current to be measured passes through the center of the Rogowski coil, which senses the change in current. An integrator transforms the signal to be measured, while a filter is used to eliminate any noise in the signal. Advances in digital IC measurement technology provide greater integrator reliability. The move to smart metering has accelerated the use of Rogowski coils.

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