The invention discloses a
Rogowski coil and a current measuring device, and belongs to the field of current transformers. A
Rogowski coil of the present invention comprises an upper layer of a coil, aloop layer and a lower layer of the coil, wherein the upper layer of a coil, the loop layer and the lower layer of the coil are provided with a plurality of conductive through-holes and
metal platingmaterials. The plurality of conductive through-holes are evenly arranged and aligned in a radial direction to form a ring shape. The conductive through-holes of the annular inner ring of the upper layer of a coil are obliquely connected to the conductive through-holes of the annular outer ring by the
metal plating materials. The
metal plating materials of the loop layer are annularly formed and plated in the middle of the annular conductive through-holes. The conductive through-holes of the annular inner ring of the lower layer of the coil are radially connected to the conductive through-holes of the annular outer ring by the metal plating materials. The metal plating materials and the through-holes form a loop coil. According to the
Rogowski coil and current measuring device, a multi-layer PCB is set on the Rogowski coil, the thickness of the Rogowski coil is increased, so that the mutual
inductance coefficient of the Rogowski coil, which is the
induced voltage of the output, is increased, the
sensitivity coefficient of the coil is increased, which is advantageous for current measurement of a lower amplitude.