Current measurement apparatus
AssigneeLem Heme Limited
InventorsDesmond Ebenezer, Albert Zwolinski
Life of this patent
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Abstract
The current measurement apparatus comprises a Rogowski coil 20 comprising a wire or conductor which forms a coil 22 and returns through the coil 22 as a central conductor. The coil 22 and the central conductor are formed from a single conductor or wire and, therefore, no electrical join (for example, a solder join or crimp) is required at the end of the Rogowski coil. The wire 28 used to form the coil 22 and the central conductor 24 is insulated prior to forming the Rogowski coil. The insulated coating 30 provides better insulation between individual coils and also helps to provide a more even spacing between the coils.
Claims23
Current measurement apparatus comprising a Rogowski coil wherein the Rogowski coil comprises a seamless conductive member, wherein the conductive member by itself is seamless, said single conductive member forms a coil and a central conductor extending through the coil wherein said conductive member forms single homogeneous wire and said homogeneous wire is insulated prior to forming the Rogowski coil.
A method of forming current measurement apparatus comprising forming a Rogowski coil from a seamless conductive member, wherein the conductive member by itself is seamless;
- forming said seamless conductive member into a coil and a central conductor extending through the coil;
- insulating said seamless conductive member before forming said coil and central conductor.
A Rogowski coil having a seamless conductive member, wherein said conductive member by itself is seamless, said seamless conductive member forms a coil and a central conductor extending through a center of the coil, and the seamless conductive element is insulated.
Dependencies are inferred from the claim text.