Outside the insulated wire core or a cable core protection layer called the sheath of the cable. The 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, 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 braid and different parts in the structure of wire and cable, the role of the braid is obviously different.
cable braiding |
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, to ensure that the wires, 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.
The effect of metallic braid
Metal braided layer are mainly copper, tin plated copper wire braid and steel wire (wire) two woven layer
Is the main purpose of seller, copper wire weaving:
1. Preventing electromagnetic interference shielding effect such as tin plated copper wire braided dedicated cable, wire weaving control cable, etc.
2. Eliminate shield of power cable surface potential, it bound power line and eliminate the induction, such as high voltage cable total shielding.
3. The shielding effect of security protection, in the main core insulation braided copper wire and with core or on the ground a good contact, timely response to the leakage situation, such as mining cable shielding
And social, is the main purpose of steel wire armoured:
L. mechanical protection. Such as Marine power cable CF31 type.
2. Under longitudinal tensile force, such as Marine geology exploration using magnetic measurement cable WC - GC, WCT.
3. The magnetic shielding.
By above can see, the role of braid in wire and cable is obvious, wire and cable prices also will be different, choose to pay attention to the use environment of wire and cable, wire and cable, in order to choose the right wire and cable.
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