Wire and cable braiding

Wire and cable is mainly composed of conductive wire core, insulation, sheath layer, the three basic structure elements. There is no strict boundaries difference between the wire and cable, but speaking from a broad meaning, cable structure is complex, it has complex sheath layer, and some only conductor and insulation wire structure is simple, some only braid light armor layer or coating a layer of light soft armor layer. The conductive wire core wire and cable is used for the transmission of current. To reduce the power loss and voltage drop, conducting wire core general selection of high conductivity copper and aluminum. The role of the insulating layer is to prevent the current along the radial leakage, ensure use safety. Therefore, insulation required to have good electrical insulating properties, heat resistance and mechanical strength.

Outside the insulated wire core or a cable core protection layer called the sheath of the cable. Main function is to protect the insulation sheath. Its main performance is moistureproof, prevent oil, anti-corrosion, Anti aging, sun fire resistant, as well as mechanical protection. It sustain tension, knock against, but also has the electric and magnetic resistance etc. From the perspective of cable sheath, weaving is many kinds of wire and cable sheath or one of the outer sheath. However, according to the materials used in wire and cable braid and different parts in the structure of wire and cable, the role of the braid is obviously different.

For wire, fiber braid is a form of the light cover. Its main function is to protect the insulation is not affected by or less by all kinds of light, heat, moisture, low temperature, acid and alkali gases such as erosion and external mechanical force damage, ensure the safety of the electric wire. For the cable, fiber braid is often in the middle of the protective layer, so as to gain strong protective layer of the tear strength, such as enhanced sheath is in the middle of the rubber or plastic sheath in cotton yarn, hemp fiber braid, in order to improve the strength of the sheath. Metal braided layer are mainly copper braid and wire woven layer.

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