What are the structures of wire and cable? Wire and cable company to introduce you
Release time： 2022-10-21 14:20
Wire and cable companies are reminded that the vast majority of wire and cable products are products with the same section (cross section) shape (ignoring manufacturing errors), the strip shape, which is determined by the characteristics of the system or equipment used as a wire or coil. Therefore, wire and cable companies study and analyze the structural composition of cable products, just observe and analyze its cross section. Generally speaking, the structural elements of wire and cable products can be divided into conductor, insulating layer, shielding and protective layer as well as filling elements and tensile elements of four main structural components, according to the requirements of the use of products and application occasions, the structure of some products is very simple.
What are the structural components of wire and cable? The following wire and cable company will introduce you.
(1) Conductor, the basic and important main component of the product to transmit current or electromagnetic wave information. Conductor is short for conductive core, which is made of non-ferrous metals with excellent conductive properties, such as copper, aluminum, copper-clad steel, copper-clad aluminum, etc., and optical fiber is used as conductor, including bare copper wire, tinned wire, single branch and multi-strand wire, twisted tinned wire.
(2) Insulation layer, which is covered in the outer part of the conductor and plays the role of electrical insulation, that is, it can ensure that the transmitted current, electromagnetic wave and light wave only propagate along the conductor instead of flowing to the outside, and can isolate the potential on the conductor (that is, the potential difference, that is, the voltage), that is, to ensure the normal transmission function of the conductor and the safety of external objects and people. Wire insulation layer is the two basic components of cable products (except bare wire).
(3) Filling structure, many products are multi-core, these insulated wire core or wire pair into the cable (or group several times into the cable), one is not round appearance, two is that there is a large gap between the insulated wire core. Therefore, the filling structure must be added during wiring. The filling structure makes the outer diameter of the cable relatively round, which is conducive to wrapping the sheath.
(4) Shielding is a component that isolates the electromagnetic field in cable products from the external electromagnetic field. Some cable products need to isolate different pairs (or groups) of lines inside each other. It can be said that the shielding layer is an "electromagnetic isolation screen".
(5) protective layer, wire and cable company products in a variety of environment installation and operation, must have the protection of the whole product parts, especially insulation layer, this is the protective layer.
Because the insulation material is required to have excellent electrical insulation performance, so the purity of the material must be high, the impurity content is very small, often unable to take into account its ability to protect the outside world, so the wire and cable company in the production of a variety of protective layer structure must withstand or resist the outside (that is, installation, use occasions and uses) a variety of mechanical forces, resist atmospheric environment, resist chemicals or oils, prevent biological invasion, Reduce fire hazards. The above is the introduction of wire and cable company to their own products, I hope to help you.