Cable Shielding Mesh – Cable Wrapping for Shielding and Protecting
Cable shielding, usually refers to a metal braided mesh or foil surrounding the inner conductor and insulation layer of the cable. It is mainly woven from fine copper wire or other conductive materials (such as aluminum) to form a protective layer wrapped around the outside of the cable core. The main function of this shielding net is to provide protection against electromagnetic interference (EMI) and radio frequency interference (RFI), and it can also play a certain physical protection role.
The cable shielding net is a full metal tinned copper braided structure shielding net, which is woven into a cylindrical mesh with very fine tinned copper wire and has good flexibility.
The interlocking structure is stable and easily elongated to be compatible with the insulation layer of the power cable.
The cable shielding net is regarded as a cost-effective shielding solution. It is wrapped around the cable harness to suppress EMI and ESD.
The cable shielding net is available in various widths, thicknesses and lengths. You can choose according to your requirements, or tell us your use, and then we will recommend it to you.
Cable shielding material selection
Tinned copper
100% copper
Stainless steel
Monel alloy wire
Features of cable shielding
Conductive wire mesh woven into various sizes of tubes
Excellent oil resistance, flame retardant, and corrosion resistance
High and low temperature resistance, stable operation
Flexible and lightweight structure can be easily wrapped around cable harnesses
Excellent EMI/ESD suppression performance
Easy to terminate the ground circuit connection at the end of the cable
More overlap can improve shielding performance
Application of cable shielding
Cable shielding can be wrapped around the harness to prevent data loss, reduce its impact on the signal, and reduce electromagnetic radiation.
It is compatible with power cable insulation and all high-voltage connectors and termination materials.
Role of cable shielding
1. Electromagnetic compatibility (EMC):
The shielding net can effectively block the interference of external electromagnetic fields on the signals in the cable, and also prevent the signals in the cable from leaking out and interfering with other devices. This is essential to ensure the accuracy of data transmission and the stability of the power system.
2. Anti-noise ability:
In power cables, the shielding net can reduce the induced voltage caused by the magnetic field generated by adjacent currents, thereby reducing the noise level and improving the transmission quality.
3. Grounding path:
When the shield is properly grounded, it can act as a low impedance path to direct any transient voltages that may invade the cable (such as lightning strikes or electrostatic discharge), thereby protecting sensitive electronic equipment from damage.
4. Mechanical protection:
Although this is not its primary purpose, the shield does provide an additional layer of physical barrier to the cable, helping to protect against minor mechanical damage.
Cable shielding mesh form
Braided shielding: The most common is to use fine copper wires woven into a grid-like structure. This form of shielding has good flexibility and high coverage.
Spiral wrapping shielding: Single or multiple metal tapes are wrapped around the cable in a spiral manner, suitable for applications that require higher flexibility.
Longitudinal wrapping shielding: Metal foil is wrapped directly around the cable longitudinally, suitable for high-frequency applications because it can provide better shielding.
Composite shielding: Combines two or more types of shielding methods, such as a layer of metal foil and then a layer of braided mesh to achieve the best shielding performance.
Cable shielding mesh material selection
Copper: One of the most commonly used materials because it has excellent conductivity and processing properties, and is easy to weld and connect.
Tinned copper: To prevent corrosion, copper wire is sometimes plated with tin.
Aluminum: For some large power cables, aluminum may be used instead of copper for cost-effectiveness.
Cable shielding applications
Shielding is widely used in various types of cables, including but not limited to:
Communication cables: such as network, telephone lines, etc., used to ensure the quality of data transmission.
Audio/video cables: such as microphone cables, speaker cables, coaxial cables, etc., used to reduce noise in audio or video signals.
Control cables: used for signal transmission between sensors and actuators in industrial automation systems.
Power cables: especially in substations, power plants and other electrical facilities, used for high-voltage power transmission while also ensuring the safety of the surrounding environment.
Cable shielding is an important component that not only enhances the functional characteristics of the cable, but also improves the reliability and safety of the entire system. If you have questions about a specific type of cable shielding or need more detailed information, please feel free to email TST CABLES cable engineers to communicate and get free samples and solutions.
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