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The difference between Rogowski coil and ordinary current transformer？

Views : 1041
Update time : 2024-08-09 12:57:50

The difference between Rogowski coil and ordinary current transformer？

  Rogowski coils, also referred to as ROGWSKI COIL, are flexible, hollow, and deformable, lacking an iron core. They operate on the fundamental principles of Faraday's law of electromagnetic induction, directly generating voltage signals across their secondary winding.

  One primary advantage of Rogowski coils over conventional current transformers lies in their absence of an iron core, which eliminates issues related to core saturation and enables direct measurement of substantial currents.

  However, owing to the absence of an iron core, the voltage signals induced by Rogowski coils are inherently weaker compare to those of CTs, and they are more susceptible to interference from external stray magnetic fields.

  As a result, meticulous attention to winding techniques becomes imperative. Furthermore, the voltage signals produced by Rogowski coils cannot be directly utilize as current signals; they require precise differentiation operations to accurately reconstruct the original current signals.

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