How To Use The Rogowski Coil

Rogowski coil is a hollow annular current sensor designed based on the principle of electromagnetic induction. Due to the absence of an iron core, there is no magnetic saturation or hysteresis phenomenon, and it can accurately measure various currents. Its usage method is not complicated.

When in use, first wrap the Rogowski coil around the measured wire to form a closed loop, ensuring that the wire passes vertically through the center of the coil, which can reduce measurement errors. Next, connect the output terminal of the coil to an integrator or measuring instrument, and convert the induced voltage signal into an output signal proportional to the measured current. For example, in the power system, the line current can be monitored in real time through a Rogowski coil, providing accurate data for relay protection devices; In the field of new energy vehicles, it can also be used to detect battery charging and discharging currents, ensuring the safe operation of the system.

During use, attention should also be paid to the range of the coil to avoid overload damage. At the same time, it is necessary to maintain the distance between the Ro coil and the surrounding strong magnetic field equipment to prevent interference. The Rogowski coil, with its advantages of high precision, wide bandwidth, and no insertion loss, is becoming a powerful tool in the field of electrical measurement and monitoring.

The above introduces the Rogowski coil from basic use to precautions. If you want to learn about its deep application in a specific industry or its comparison with other sensors, please feel free to talk to me.