• Categories:Industry News
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• Time of issue:2023-03-14
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(Summary description)(1) Wire: The basic and essential component of a product for transmitting current or electromagnetic wave information.
Main materials: the conductor is the abbreviation of conductive core, which is made of copper, aluminum, copper clad steel, copper clad aluminum and other nonferrous metals with excellent conductivity, and optical fiber is used as the conductor.
There are bare copper wires and tinned wires; Single branch line, stranded wire; Twisted tinned wire.
(2) Insulation layer: A component that is wrapped around the periphery of a wire and serves as electrical insulation. To ensure the normal transmission function of the wire and the safety of external objects and individuals, it is necessary to ensure that the transmitted current, electromagnetic waves, and light waves only travel along the wire and do not flow outward. The potential (i.e., the potential difference or voltage formed on the surrounding object) on the conductor can be isolated. Wire and insulation layer are two basic components that must be present in cable products (excluding bare wires).
Main materials: PVC, PE, XLPE, polypropylene PP, fluoroplastic F, rubber, paper, mica tape
(3) Filler structure: Many wire and cable products are multi-core. After forming these insulated wire cores or pairs into cables (or grouping them multiple times into cables), the first reason is that the appearance is not round, and the second reason is that there is a large gap between the insulated wire cores. Therefore, it is necessary to add a filler structure during cable formation. The filler structure is to make the outer diameter of the cable relatively round, which is conducive to tape wrapping and sheath extrusion.
Main material: PP rope
(4) Shielding: It is a component that isolates the electromagnetic field in the cable product from the external electromagnetic field; Some cable products also need to be isolated from each other between different pairs (or groups) of wires inside them. It can be said that the shielding layer is an "electromagnetic isolation screen". The conductor shielding and insulation shielding of high-voltage cables are used to homogenize the distribution of electric fields.
Main materials: bare copper wire, copper clad steel wire, tinned copper wire
(5) Protective layer: When wire and cable products are installed and operated in various environments, they must have components that protect the overall product, especially the insulation layer, which is called protective layer.
Because insulation materials are required to have excellent electrical insulation properties, it is necessary to require materials with extremely high purity and minimal impurity content; It is often difficult to balance its ability to protect the outside world, so various protective structures must bear the burden of bearing or resisting various mechanical forces, atmospheric environment resistance, chemical or oil resistance, prevention of biological damage, and reduction of fire hazards in the external environment (i.e. installation, usage, and use).