What is the main function of the steel core of the steel-cored aluminum stranded wire?

1. Introduction of steel cored aluminum stranded wire

Aluminum Steel Core Stranded Wire, or ACSR for short, is a common material for overhead conductors. It is composed of aluminum wire and steel core, and is widely used in the field of power transmission and distribution because of its good electrical conductivity, high strength and mechanical stability.

2. The main function of the steel core

The steel core is an important part of the steel-cored aluminum stranded wire, and its main functions focus on the following aspects:

1. Increase the strength and stability of the wire

Due to the addition of the steel core, the strength of the entire wire has been greatly improved. During the erection process, the steel core can also reduce the tensile deformation of the wire, which increases the stability of the wire and prevents excessive elongation deformation, buckling deformation, etc.

2. Reduce the expansion and contraction of the core

Under the influence of atmospheric temperature difference, the wire core will expand and shrink, and even affect the safety of the wire. The existence of the steel core can reduce the thermal expansion and contraction deformation of the wire core, and overcome the deformation and displacement of the wire affected by the temperature.

3. Improve the carrying capacity and safety of the wire

The addition of the steel core can improve the bearing capacity and safety of the wire, and increase the bending rigidity and bending fatigue resistance of the wire. Under strong wind and severe weather conditions, the existence of the steel core can also improve the tensile capacity of the wire, preventing dangerous situations such as the wire being blown off or collapsing.

3. Summary

To sum up, the steel core is an important part of the ACSR, and its role is very important. It can increase the strength and stability of the wire, reduce the expansion and contraction of the core, and improve the bearing capacity and safety of the wire. Special attention should be paid when using, and the correct wire specification and use method should be selected to ensure the safe and stable operation of the wire.