A high voltage shielding device comprising: a main body having a through opening extending centrally through the main body, the through opening forming part of the interior of the high voltage shielding device, wherein the main body has an enclosing outer solid insulating wall enclosing the interior of the high voltage shielding device, and wherein the main body has a rotationally symmetric shape with respect to a central axis parallel with the through opening and which central axis defines a center of the through opening, an outer electrode arranged on the solid insulating wall providing a first level of insulation to the outer electrode, and a first inner electrode which has a coating providing a second level of insulation, which second level of insulation is lower than the first level of insulation, a second inner electrode facing the first inner electrode, wherein the second inner electrode has the second level of insulation, wherein the through opening extends from the first inner electrode to the second inner electrode, wherein the first inner electrode is oriented relative the outer electrode in such a way that the first inner electrode mainly shields a component of an electric field (E 1) which is perpendicular to a component of an electric field (E 2) mainly shielded by the outer electrode, the outer electrode thereby shielding electric fields in the radial direction of the high voltage shielding device and the first inner electrode shielding electric fields in the axial direction of the high voltage shielding device, and wherein a side of the outer electrode facing the solid insulating wall presents a surface which is in contact with the solid insulating wall along the entire length of the outer electrode. a main body having a through opening extending centrally through the main body, the through opening forming part of the interior of the high voltage shielding device, wherein the main body has an enclosing outer solid insulating wall enclosing the interior of the high voltage shielding device, and wherein the main body has a rotationally symmetric shape with respect to a central axis parallel with the through opening and which central axis defines a center of the through opening, an outer electrode arranged on the solid insulating wall providing a first level of insulation to the outer electrode, and a first inner electrode which has a coating providing a second level of insulation, which second level of insulation is lower than the first level of insulation, a second inner electrode facing the first inner electrode, wherein the second inner electrode has the second level of insulation, wherein the through opening extends from the first inner electrode to the second inner electrode, wherein the first inner electrode is oriented relative the outer electrode in such a way that the first inner electrode mainly shields a component of an electric field (E 1) which is perpendicular to a component of an electric field (E 2) mainly shielded by the outer electrode, the outer electrode thereby shielding electric fields in the radial direction of the high voltage shielding device and the first inner electrode shielding electric fields in the axial direction of the high voltage shielding device, and wherein a side of the outer electrode facing the solid insulating wall presents a surface which is in contact with the solid insulating wall along the entire length of the outer electrode.