Steel core aluminum stranded wire is an important conductor material used for overhead transmission lines. It is made of internal steel wires and external aluminum wires through twisting.
The internal structure of this conductor mainly consists of two parts: steel core and aluminum stranded wire.
The main function of the steel core is to improve the mechanical strength of the wire, while the outer aluminum stranded wire is used to conduct current.
In transmission lines, the functions of steel core aluminum stranded wires are as follows:
Enhanced mechanical strength: The addition of steel core significantly improves the tensile strength and bending strength of the conductor, allowing it to withstand the conductor's own weight, wind force and other external forces, which is crucial for the safe operation of transmission lines.
Improve electrical conductivity efficiency: Aluminum stranded wire has better electrical conductivity and can effectively transmit electrical energy. At the same time, aluminum wire is lighter in weight and can be used on lighter load-bearing structures.
Economical: Due to the low density of aluminum, the cost of steel-core aluminum stranded wires is relatively low compared to pure copper wires or all-aluminum conductors, which is beneficial to reducing the manufacturing cost of power transmission systems.
Strong adaptability: Steel core aluminum stranded wire is suitable for various climate and terrain conditions, including crossing rivers, valleys and other special geographical conditions, and has good adaptability.
Convenient maintenance: The installation and maintenance of this kind of wire are relatively convenient, helping to reduce operation and maintenance costs.
