The main function of cable shielding material（2）

Braided nets are generally woven from tinned round copper wires. Mainly to prevent low-frequency electromagnetic wave interference. Its working principle is the same as that of aluminum foil. The shielded network cable using braided net requires the density of the braided net to be greater than 60%. This type of braided net is mainly used in places where a large number of network cables are laid in the same wire slot, which can reduce the alien crosstalk generated between the network cables. In addition, it can also be used for inter-pair shielding, so as to increase the twisting length of the pair and reduce the twisting distance requirement of the cable. During construction, the braided mesh and the drainage line need to be bundled together for drainage.

Generally, the shielded network cable will use the drain wire, and the material of the drain wire is generally tinned round copper wire. Mainly play the role of grounding and tensile strength. During construction, the drain wire must be mainly connected to the shielded crystal head, shielded module or shielded wiring frame, and the drain wire cannot be cut off. Otherwise, the shielding layer will not only fail to shield the interference, but even become a source of interference.