Advantages of Rokowski coil
A Rogowski coil, also known as a current measuring coil or differential current sensor, is a circular coil uniformly wound around a non-ferromagnetic material. The output signal is the derivative of the current with respect to time. Through a circuit integrating the output voltage signal, the input current can be truly restored. The coil has the current can be measured in real time, the response speed is fast, will not be saturated, almost no phase error characteristics, so it can be used in relay protection, thyristor rectifier, frequency control, resistance welding signal serious distortion and electric furnace, short circuit test, lightning signal acquisition and other large current occasions.
Advantages of Rokowski coil
Rokowski coils exceed other types of current transformers. Because the Rocos baseline coil has an empty core rather than an iron core, it has low inductance and can comply with rapidly changing currents. No secondary open road danger; Irregular conductors can be measured; Easy installation, no need to destroy the conductor; In addition, because it is not saturated with iron cores, it is highly linear and can withstand even greater currents, such as those used in power transmission, welding, or pulsed power applications. A correctly formed Rocos baseline coil, and the same distance from the winding, is largely immune to electromagnetic interference.
Rokowski coil current transformer
The Roche coil current Transformer uses a flexible current sensor (Rogowski coil current sensor) as the acquisition current sensor, which can measure frequencies from a few Hertz to 1M, from a few amperes to several hundred thousand amperes. It has excellent transient tracking ability and can be used to measure large size or irregular shape conductor current. It is widely used in the measurement of large current which can not be used normally by traditional current measurement CT.
