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Structure composed of wire and cable

2015-8-25

导线　

The basic wire is essential main component current products or electromagnetic wave information transmission function。

Main material: conductive core wire is short, with copper, aluminum, copper clad steel, excellent electrical conductivity properties of copper clad aluminum and other nonferrous metals made to an optical fiber as a conductor。

Insulating layer　

The insulating layer is coated with an electrically insulating effect plays around the periphery of the wire member. Namely to ensure the transmission of electric current or electromagnetic waves, light waves travel only along the wire without flowing out, with the potential on the conductor (ie, the potential difference formed around the object, namely voltage) can be isolated, that is necessary to ensure the normal transmission wires function, but also to ensure that external objects and personal safety. Wire and insulation layer is composed of two basic components of cable products (except for bare wires class) must have。

Main materials: PVC, PE, XLPE, polypropylene PP, fluorine plastics F, rubber, paper, mica。

Filled structure　　

A lot of wire and cable products are multicore, these insulated core or wire pair cabling (or grouping multiple cabling), the first, not rounded shape, and second insulating core leaving much void and must therefore be Add filling structure cabling when filling structure it is to make the outer diameter of the cable into a relatively rounded to facilitate taping, crowded jacket。

The main material: PP rope

屏蔽

The cable shield is a product of the electromagnetic field and the electromagnetic field outside the isolation member; cable products made in its interior also needs between different pairs (or line group) isolated from each other. We can say the shield is a "magnetic separation barrier." Conductor shielded high voltage cable and insulation shield is to homogenize the distribution of the electric field。

Main material: bare copper wire, copper clad steel wire, tin copper

护层

当Wire and cable products installed to run in a variety of environments, we must have the product as a whole, particularly for the insulating layer protective member, which is the protective layer. Because the requirements of various insulating materials have excellent electrical insulation properties, you must require very high purity material, impurity content is minimal; often unable to take into account their ability to protect the outside world, so the outside world (ie installation, using the occasion and in use ) to withstand a variety of mechanical force or resistance, resistance to atmospheric environment, resistance to chemicals or oil, to prevent biological infringement, and to reduce fire hazard and so must be borne by all kinds of protective layer structure.。

Main materials: PVC, PE, rubber, aluminum, steel

抗拉元件

图6The typical structure of ACSR, fiber optic cable and cable. In short, the development of special small, soft type, and requested repeatedly bent, twisted use of the product, the tensile element plays a major role。

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