nVent ERIFLEX Rogowski Sensors

Flexible, lightweight, and easy to install, nVent ERIFLEX Rogowski coils are ideal for retrofitting and energy monitoring applications. These sensors have been used for decades to measure alternating current (AC) with high accuracy and reliability.

Thanks to their air-core design, Rogowski coils eliminate the need for a magnetic core, resulting in a non-saturating, flexible structure that can be easily looped around conductors. This design ensures precise measurement of the AC component without distortion, even under high current conditions.

The Rogowski coil operates on a simple yet effective principle: an air-cored toroidal coil is placed around the conductor. The magnetic field generated by the AC current induces a voltage in the coil, which is proportional to the rate of change of the current. This signal is then integrated electronically to produce an output that is directly proportional to the current flowing through the conductor.