Electric wires are mainly composed of three basic components: conductive core wire, insulation layer, and coating layer. Although there is no strict boundary between wires and cables, broadly speaking, cables have complex structures and complex sheath layers. The wire structure is relatively simple, only the conductor and the insulation layer. The core wire of the wire is used to transmit current. In order to reduce power loss and voltage drop, the core wire is generally made of copper and aluminum with high conductivity. Let’s learn about the functions of braided wires and cables! Wires and cables

The function of the insulating layer is to prevent current from leaking in the radial direction and ensure its safe use. Therefore, the insulation layer requires good electrical insulation properties, heat resistance and certain mechanical strength. The protective covering layer outside the insulating wire core or cable core is called the cable covering layer. (The protective covering layer outside the covering layer is called the outer covering layer). The main function of the protective layer is to protect the insulation layer, and its main properties are moisture-proof, oil-proof, and anti-corrosion. It also has the functions of sun aging, flame resistance, mechanical protection (the function of the outer protective layer is mainly to strengthen the mechanical protection of the cable and resist tension and bumps), resistance, magnetic drying resistance, etc. From the perspective of wire and cable braiding, braiding is one of many types of braids or sheaths for wires and cables, but the role of braiding obviously varies depending on the material used in the wire and cable braiding and where it is woven into the wire and cable structure.

1. The role of fiber weaving

In the case of wires, fiber braid is a form of its lightweight protective layer. Its main function is to protect the wires from erosion by various light, heat, moisture, low temperature, acid and alkali gases, etc. and damage by external mechanical forces. , ensure the safe operation of wires. In the case of cables, the fiber braid is mostly located in the middle of the protective layer to improve the tear strength of the protective layer. For example, a reinforced sheath is made by adding fiber braid such as cotton yarn or linen in the middle of a rubber or plastic protective layer to increase the strength of the protective layer.

2. The role of metal braided wires and cables

Metal braiding mainly includes copper wire braiding and wire (metal wire) braiding. The main functions of copper wire braid are as follows.

1. Tinned copper wire braided general cables, copper wire braided control cables, etc. have a shielding effect to prevent electromagnetic interference. Wire and Cable

2. It has the shielding effect of removing the surface potential of power cables, binding power lines, and removing the same induced electricity as the total shielding of high-voltage cables.

3. The shielding function of safety protection is to braid copper wire outside the main core insulation and make good contact with the bottom core or be used as grounding, which can respond to leakage situations in time, such as shielded mining cables.

The main functions of steel wire braiding are:

1. Mechanical protection function of marine power cable type CF31, etc. Wire and Cable

2. It is subject to longitudinal tension similar to WC-GC and WCT cables used for marine geological exploration.

3. Magnetic field shielding.

The above introduction is the function of braided wires and cables. If you need to know more, you can contact us at any time!