Stock Code:300252.SZ
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Comparison of performance between aluminum alloy power cable and aluminum core power cable

author:kingsignal time:2017/08/07

Aluminum alloy power cable and aluminum core power cable performance has some differences, pure aluminum corrosion resistance than copper, but the corrosion resistance of aluminum alloy is better than pure aluminum Here we from the corrosion resistance, mechanical properties, conductivity, creep resistance and other aspects of four aspects of analysis.

 

1. Corrosion resistance

 

Aluminum corrosion resistance is better than copper, but the corrosion resistance of aluminum alloy is better than pure aluminum, because the addition of rare earth alloys and other chemical elements can increase the corrosion resistance of aluminum alloy, especially resistance to electrochemical corrosion, To solve the long-term aluminum in the joints appear electrochemical corrosion problems.

 

2. Mechanical properties

 

(1) Tensile strength and elongation. Aluminum alloy conductor compared to pure aluminum conductor, due to the addition of special ingredients and the use of a special processing technology, greatly improve the tensile strength, and elongation increased to 30%, the use of more secure and reliable.

 

(2) bending performance. Aluminum core power cable bending performance is poor, bending is prone to fracture, aluminum alloy power cable bending radius of 7 times the power cable diameter, far better than GB / T12706 "power cable installation of the minimum bending radius" In the specified 10 times -20 times the power cable diameter.

 

(3) Flexibility. Pure aluminum power cable as long as several times the angle of the reverse, the conductor will appear cracking or broken, easily lead to accidents, and aluminum power power cable can withstand dozens of bending, eliminating the use of pure aluminum power cable installed in the past There are hidden dangers, greatly improving the safety and reliability.

 

3. Conductive capacity

 

Aluminum alloy conductor is added in pure aluminum rare earth, magnesium, copper, iron and other elements, through the alloy process to form a new conductor material. It is well known that the addition of a variety of other alloying elements in aluminum results in a decrease in conductivity, and by means of process control, the conductivity can be restored to a level close to pure aluminum, which has a similar carrying capacity with pure aluminum.

 

4. Creep resistance

 

Pure creep resistance of pure aluminum caused by the power outage caused by thermal expansion and contraction at the junction will cause a large amount of creep, after a long time there will be relaxation, contact resistance increases caused by overheating, easily lead to accidents. AA8000 series of aluminum alloy creep resistance is 300% of pure aluminum conductor, greatly reducing the possibility of power cable connector relaxation, improve the connection of the conductor.

 

The above is a brief description of the aluminum alloy power cable and the aluminum core power cable, learn more about the power cable content, please pay attention to kingsignal official website.

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