电线电缆各大类产品简介(国外英文资料).docVIP

电线电缆各大类产品简介(国外英文资料) Wire and cable products introduction Bare wire and bare conductor products (1) cables with only conductors without any insulation are referred to as bare wires and bare conductor products. In order to keep current flowing along the direction of the conductor and electrical safety, external insulation such as space interval and insulator support must be set up during installation. Therefore, the product itself does not indicate the use of voltage. This product is a technology research and development of conductive metal materials with high conductivity, high strength, high heat resistance, corrosion resistance, abrasion resistance and other properties, as well as non-ferrous metals processing (hot rolling and cold drawing, stranding etc.) technology and equipment, conductive alloy Preparation, smelting and modification of high purity nonferrous metals and research and development of process technology, etc.. (two) according to the structure and use of different, divided into four categories 1, bare single line Refers to the non-ferrous metal line of different materials and sizes, can be divided into round wire (copper, aluminum and its alloys), flat wire (copper, aluminum and its alloys), metal coating (tin, silver, nickel) of the single and double metal wire (aluminum clad steel, copper clad aluminum, copper clad steel etc.). Most of this product is used as a material for the next line of cable products. 2, bare wire This is the leading product in this category. As it is always erected on a pole, it is customarily called overhead wire. Overhead conductor itself is not voltage level, that is, from low voltage, medium voltage, high pressure and even ultra high voltage principle can use the same series of wires. But 330 - 500kV level, to the wire outside diameter and surface smoothness have special requirements, in order to reduce the wire surface corona (that is, the electric field to make the local partial air free, will increase line loss). Alth