Wire and cable manufacturers talk about basic internal structure analysis of wire and cable

Wire and cable manufacturers: cable structure of new products

The vast majority of wire and cable products are long and strip-shaped products with exactly the same cross-section (ignoring the deviation caused by production and manufacturing). This is because the system or equipment is determined by the characteristics used to form the route or electromagnetic coil. Therefore, the structural composition of new cable products is analyzed and studied only by its cross-section.

The structural components of new wire and cable products can be roughly divided into four key structural components: transmission line, cable sheath, shielding and outer sheath, as well as their additional components and tensile components. According to the application requirements and application places of new products, many products are simple in structure and can only be used for one component of transmission line, such as empty bare conductor, railway catenary transmission line, copper-aluminum medical bus bar (bus duct), etc. The open electrical insulation of such products is guaranteed by composite insulators and spatial distance (I .e. air insulation) when assembling and laying.

Wire and cable manufacturers

1. Wire

The wire is a structural configuration that is basically indispensable for the function of the device to communicate current or radio wave data. Transmission line is the English abbreviation of conductive core, made of copper, aluminum and other good conductive properties of rare metals. In the past three decades, the rapid development of optical fiber communication and the use of optical fiber cables in the Internet is based on light guides as transmission lines.

2. Cable sheath

It is a prefabricated component that is wrapped around the outfield of a transmission line and plays an electrical insulation role. That is, it can ensure that the transmitted current flow, radio waves and microwaves only travel along the transmission line and do not flow into the outside, and the potential difference on the electrical conductor (that is, the potential difference formed by the surrounding objects, that is, the working voltage) will be blocked, that is, not only to ensure the normal transmission function of the transmission line, but also to ensure the safety of external objects and people, cables and insulation are the two core prefabricated components that make up cable goods (other than bare wires).

3. Outer protective layer

When wire and cable goods are assembled and operated in a variety of different natural environments, there should be prefabricated components that maintain the overall product, especially the cable sheath, which is the outer sheath.

Because it is stipulated that the insulating layer material has good various insulating properties, it is necessary to stipulate that the purity of the plateau material is very high and the residue composition is especially small. Generally, it is impossible to have both its maintenance level to the outside world. Therefore, it is possible to bear or resist various external mechanical functions (I .e. assembly, application site and use), to resist ambient air, to resist chemicals or plateau oil, and to avoid animal damage, and reduce the harm of fire, etc. need to be borne by a variety of outer sheath structures.

4. Shielded

It is a prefabricated component that isolates the magnetic field on the cable product from the external magnetic field. The cable products produced by the cable should also be protected from each other in the middle of the line pair (or fishing group) with different internal structures. It can be said that the shielding layer is a kind of "electromagnetic wave protective screen".