Wire and cable are electrical products used to transmit electrical energy, transmit data signals and complete electromagnetic energy conversion. Due to the rapid development of social development and the continuous development of science and technology, the types of wires and cables are increasing. At this stage, there are more than 1,000 kinds of rough statistical analysis and more than 20,000 specifications and models. According to the manufacturing process, structural characteristics, function regulations, and the main purpose of the product, it can be divided into five categories:
1. Bare wire: refers to products with and only electrical conductors without cable jackets. These include copper, aluminum, etc., and composite metal round single wires, stranded wires, flexible wiring, profiles and profiles for overhead transmission lines of various structures.
2. Power cable: Power cable is a cable product used to transmit and distribute high-power electric energy in the main road of the power supply system. These include power cables with various rated voltages and various insulation layers from 1-500kV and above
3. Wires and cables for electrical equipment: from the power distribution equipment point of the power supply system, the electrical energy is immediately transferred to various switching power supply connecting lines of various electrical equipment and equipment, and various industrial and agricultural electrical appliances. Equipment, installation cables and wires and cables for control signals. This kind of product has a wide range of applications, and at the same time, it needs to integrate the characteristics of commonly used machinery and equipment and the standards of use scenarios to clarify the structure and characteristics of the cable. Therefore, in addition to these many general-purpose products, there are also many special-purpose wires and cables.
4. Power cables and optical cables: Communication optical cables are cables that transmit mobile phones, telegraphs, TV sets, broadcasts, faxes, information data and telecommunication information content. The representative ones are HYV, MHYV, SYV-75 radio frequency cables.
5. Electromagnetic wire.
