The main characteristics of wire and cable products are: pure conductor metal, no insulation and sheath layer, such as steel core aluminum stranded wire, copper and aluminum busbar, electric locomotive line, etc.; Processing technology is mainly pressure processing, such as smelting, calendering, drawing, stranding/pressing stranding, etc.; Products are mainly used in suburban, rural, user line, switch cabinet and so on.
There are thousands of kinds of wire and cable products, which are used in all walks of life. They are generally used for two purposes, one is to transmit current, the other is to transmit signals. The most important technical performance indexes of the current transmission cable are conductor resistance and voltage resistance; The main technical performance index of signal transmission cable is transmission performance, such as characteristic impedance, attenuation and crosstalk. Of course, the transmission signal mainly depends on the current (electromagnetic wave) as a carrier, now with the development of science and technology can be used as a carrier to transmit light wave.
