There are many reasons for the aging of solar cables, the main reasons are as follows:

1. External force damage. Most solar cable failures are caused by mechanical damage.

2. The insulation is damp. Generally occurs at the cable joints in direct burial or piping. For example, unqualified cable joints or joints made in humid weather conditions will cause water or steam to enter the joints. Over time, water branches will form under the action of the electric field, which will gradually damage the insulation strength of the cable and cause the failure of the solar cable.

3. Chemical corrosion. The cable is directly buried in the area with acid and alkali, which will often cause the cable armor, lead skin or outer sheath to be corroded. The protective layer suffers from chemical corrosion or electrolytic corrosion for a long time, resulting in the failure of the protective layer and the reduction of insulation. The cable is faulty.

4. Long-term overload operation of the cable. Overload operation, due to the thermal effect of the current, the conductor will inevitably heat up when the load current passes through the cable, and the insulation loss will also generate additional heat, which will increase the temperature of the cable.

5. The cable connector is faulty. Cable joints are the weakest link in the cable line, and cable joint failures often occur due to improper operation of the staff. In the process of making cable joints, if there are reasons such as insufficient joint crimping, insufficient heating, etc., the insulation of the cable head will be reduced, which will cause an accident.

6. Environment and temperature. The external environment and heat source of the cable can also cause the cable to overheat, insulation breakdown, and even explosion and fire.