Aluminum alloy cable What factors affect the quality? How should it be stored?

1. Compressive creep properties of conductor aluminum alloy rods;

Aluminum alloy cable is a new type of conductor cable invented by aluminum alloy cable. Due to its poor compression creep performance, safety accidents occur frequently in cable applications. One of the important advantages and values ​​of aluminum alloy cable is that its compression creep performance is much better than that of aluminum alloy cable.

Compression creep performance is an important condition for evaluating whether the conductor aluminum alloy material is excellent, and the compression creep performance directly reflects the value of the aluminum alloy cable.

Second, the quality of the conductor aluminum alloy rod:

An important factor that determines the quality of aluminum alloy cables is whether the quality of their conductor materials is qualified and excellent. If the conductor aluminum alloy rod material is unqualified, the quality of the aluminum alloy cable will be a problem. The quality of the aluminum alloy conductor rod material basically determines the quality of the manufactured aluminum alloy cable from the objective conditions.

What are the precautions for aluminum alloy cable storage?

1. Aluminum alloy cable connector problem:

The cable joint is the weak link in the aluminum alloy cable line, and the cable joint failure caused by direct personnel error (poor construction) often occurs. In the process of making cable joints, if the construction personnel are faced with the precautions for storing aluminum alloy cables, if the joints are not tightly crimped and fully heated, the insulation of the cable head will be reduced, resulting in a decrease in the insulation of the cable head.

2. Environment and temperature:

The external environment for the storage and use of aluminum alloy cables and the surrounding heat sources will affect the use conditions and service life of aluminum alloy cables.

3. Insulation should be damp:

Usually occurs in direct buried cable glands or pipes. For example, unqualified cable joints and joints made under wet weather conditions will cause water or steam to enter the joint for a long time under the action of the electric field, forming a wet branch, gradually destroying the insulation strength of the cable and causing failure.

4. Chemical corrosion:

If the aluminum alloy cable is directly buried in the area with acid-base effect, it will often corrode the armor, lead or outer protective layer of the cable. Long-term chemical or electrolytic corrosion of the protective layer will cause the protective layer to fail, the insulation will decrease, and the cable will fail.

5. Long-term overload operation:

During overload operation, due to the thermal effect of the current, the conductor will inevitably heat up when the load current passes through the cable. Charge skin effect, steel armor eddy current losses, and insulation dielectric losses also cause additional heat, which increases the temperature of the aluminum alloy cable. During long-term overload operation, excessive temperature will accelerate insulation aging, resulting in insulation damage.

6. Harm of external force:

A considerable number of aluminum alloy cable failures are caused by mechanical failures. Sometimes, if the damage is not severe, it can take months or even years for the damaged part to completely break down, causing problems. Sometimes, serious damage can lead to short-circuit problems, which directly affect the safe production of electrical equipment and power-consuming units.