The two types of conductors commonly used in power lines are mainly copper-clad steel strands and aluminum-clad steel strands.
Although the structure of these two strands is made of steel core and cladding.
But there are some notable differences between them.
Because the power line needs to bear a huge load during the long period of use.
Understanding these differences is therefore critical to proper wire selection and use.
First of all, the material and appearance of copper-clad steel strands and aluminum-clad steel strands are different.
The core wire of copper-clad steel stranded wire is based on steel wire.
The outer layer is coated with copper on the steel core by copper plating.
These copper-clad steel strands have a high metallic appearance, usually copper-colored.
In contrast, aluminum-clad steel strands have a steel core wrapped in aluminum and have a gray appearance.
Secondly, the electrical conductivity of copper-clad steel strands and aluminum-clad steel strands is different.
Although both are steel cores, the conductivity of copper-clad steel strands is relatively better.
Because copper has a much higher conductivity than aluminum.
Therefore, copper-clad steel strands can transmit current more efficiently and reduce energy loss when subjected to the same load.
However, copper-clad steel strands are more expensive to manufacture and more expensive.
Third, the hardness of copper-clad steel strands and aluminum-clad steel strands is also different.
Aluminum-clad steel strands are softer than copper-clad steel strands.
This means it can bend and form corners more easily, making it better suited for lines that require bending.
Although copper-clad steel strands are difficult to bend, they are more suitable for lines that require high stability.
Finally, the corrosion resistance of copper-clad steel strands and aluminum-clad steel strands is also different.
Because the insulation layer of the copper-clad steel strand is usually made of materials such as rubber or polyethylene.
It is therefore more durable and resistant to damage from acids, alkalis and chemicals.
In contrast, aluminum-clad steel strands are usually insulated with materials such as polyvinyl chloride and are susceptible to various types of corrosion.