Wall feed-through sleeve with high-low voltage shielding

The invention relates to the field of electrical equipment, in particular to a wall feed-through sleeve. The wall feed-through sleeve with high-low voltage shielding comprises a wall feed-through sleeve body made of insulating materials. A flange used for installing and fixing the wall feed-through sleeve body is arranged on the wall feed-through sleeve body. A shielding layer wraps the interior of the position of the flange on the wall feed-through sleeve body. The shielding layer comprises a high-voltage shielding cover and a grounded low-voltage shielding cover, wherein the high-voltage shielding cover is used for achieving high-voltage shielding. The high-voltage shielding cover is located on the inner wall of the wall feed-through sleeve body. Insulating materials are arranged between the high-voltage shielding cover and the low-voltage shielding cover. Due to the fact that the shielding layer wraps the interior of the position of the flange of the wall feed-through sleeve body, electric field distribution is improved, electric stress on the insulating materials by an electric field is reduced, corona discharge is reduced or eliminated, the service life of the wall feed-through sleeve is prolonged, and reliable operation of a network system is ensured.