Abstract: A current sensor based on a Rogowski coil includes a polygonal cross-section tube obtained from of one or more parts of rigid PCB. The windings that form the Rogowski coil are located on the portions of rigid PCB which form the flat faces of the polygonal cross-section tube. One or more parts of rigid PCB are joined together using flexible zones which can bend in the form of an l. The polygonal cross-section tube is designed so that, during its use, the conductor whose current is required to be measured is situated along the tube's longitudinal axis.

Abstract: A current sensor based on a Rogowski coil characterised in that it comprises a polygonal cross-section tube obtained from of one or more parts of rigid PCB, wherein the windings that form the Rogowski coil are located on the portions of rigid PCB which form the flat faces of said polygonal cross-section tube and wherein said one or more parts of rigid PCB are joined together by means of flexible zones which can bend in the form of an I, said polygonal cross-section tube being designed so that, during its use, the conductor whose current is required to be measured is situated along the tube's longitudinal axis.