Wire and cable manufacturers introduce the role of the braided layer


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Wire and cable manufacturers explain that the three basic components of wire and cable are conductor, insulation layer, and sheath.

Wire and cable manufacturers explain that the three basic components of wire and cable are conductor, insulation layer, and sheath.

Some cables also have an isolation layer, shielding layer, and outer sheath. Braiding serves as the shielding or protective layer for wires and cables. The function of the braid varies depending on the material used and its location within the wire and cable structure. Tianhong Zhiyuan Wire and Cable Manufacturer explains the specific functions of braiding in wire and cable:

1. Fiber Braid: A fiber braid is a lightweight sheath. For wires, its primary function is to protect the insulation from or minimize damage from various factors, such as light, heat, moisture, low temperatures, acidic and alkaline gases, and other external physical damage. For cables, the fiber braid is often placed within the sheath to enhance its tear resistance. For example, a reinforced sheath is constructed by adding a fiber braid such as cotton yarn or hemp between the rubber or plastic sheath to increase its strength.

2. Metal Braid: Metal braids are primarily available in two types: copper braid and steel (iron) braid.

2.1. Main Functions of Copper Wire Braid:

2.1.1. Shielding against electromagnetic interference, such as in copper wire braided control cables.

2.1.2. Shielding to eliminate surface potential in power cables. This shielding acts to confine power lines and eliminate induced current, such as in the overall shielding of high-voltage cables.

2.1.3. Shielding for safety protection. Braiding copper wires over the insulation of the main core ensures good contact with the ground core or acts as a ground wire, providing timely detection of leakage current, such as in shielded mining cables.

2.2. Main Functions of Steel Wire Braid:

2.2.1. Mechanical protection.

2.2.2. Withstands longitudinal tensile forces.

2.2.3. Magnetic field shielding.