Study on Shielding Effectiveness of Metal Shielding Mesh of Cable Joint

The metallic wire mesh is widely used in electromagnetic shielding engineering due to its obvious advantages such as light weight, high flexibility and low cost. The power cable joint uses metal mesh to restore the metal shielding layer. This paper studies the shielding effectiveness (SE) of metal mesh used for cable joint. Compare and analyze the shielding effectiveness of joint copper mesh and the effect of different specifications and double-layer copper mesh on the shielding effectiveness in terms of theoretical calculation and simulation. The results show that the shielding effectiveness of copper mesh varies with frequency; comparing different specifications of copper mesh, the shielding effectiveness of dense mesh is higher than that of sparse mesh; the shielding effectiveness of double-layer wire mesh is higher than that of single-layer wire mesh with the same specification when the distance between two-layer wire mesh is reasonably selected. Finally, the structure optimization scheme is proposed to improve the shielding effectiveness of cable joint copper mesh.