Which is better for cable shielding, copper wire shielding or copper tape shielding?

The structure of cables varies according to different occasions. In situations where interference is to be shielded, shielded cables are widely used. So when choosing shielded cables, should copper wire shielding or copper tape shielding be selected? Regarding copper wire shielding and copper strip shielding, the editor will take you to have a brief understanding!

The main function of the shielding layer is to protect the current or signal from external electromagnetic interference, and to prevent the electromagnetic field generated by itself during use from interfering with the surrounding environment and causing current flow faults.

According to the requirements of shielding performance, different materials are selected, such as copper wire braided shielding, copper tape wound shielding, copper wire loose wound shielding, aluminum alloy wire braided shielding, copper-clad aluminum wire braided shielding, aluminum-plastic composite tape wound shielding, etc. To ensure the continuity of the shielding layer and reduce its transmission impedance, it is usually necessary to place one or more annealed copper wires longitudinally in the shielding layer as lead wires for copper tape winding.

The main direction of the current shielded by the copper strip is the same as that of the copper strip. Copper wire shielding allows current to flow through a short path, generating less heat. In contrast, two-layer copper tape shielding increases the cross-sectional area of the shielding, reduces the flowing current, and thus generates less heat. Although it can shield signals, if it targets a cable with a current-carrying capacity of 500mm, the magnetic field it generates itself will also increase. When the short-circuit current exceeds a certain value, the effective cross-sectional area value of the second layer of 0.12 mm copper strip cannot reach the maximum effective cross-sectional area value that can be achieved by winding copper wire.

Taking all the above into consideration, the shielding effect of copper wire is much better than that of other shielding methods, and its continuity is reliable. Therefore, copper wire shielded cables can be selected.

However, depending on different construction plans and laying environments, the utilization rate of copper shielded cables is also very high. Here, users should choose to purchase according to their own needs.