The design lifespan of photovoltaic DC cables is typically over 25 years, matching the operating cycle of a photovoltaic power station. Under standard operating conditions and with high-quality materials and manufacturing processes, some high-performance products can reach a lifespan of 50 years.
1. Industry Standard Lifespan: 25 Years
Photovoltaic DC cables are specifically designed for solar energy systems and need to be exposed to harsh outdoor environments for extended periods. Their lifespan target is consistent with that of photovoltaic modules, generally designed for 25 years.
Mainstream models, such as PV1-F cables, have passed international certifications such as TÜV 2PfG 1169/08.2007, which explicitly require stable operation for 25 years in environments with ultraviolet radiation, high and low temperatures (-40℃ to +90℃), and humid heat.
The cables use irradiated cross-linked polyolefin materials as insulation and sheathing. After electron beam irradiation, a three-dimensional network structure is formed, significantly improving heat resistance, aging resistance, and mechanical strength.
2. Materials and Processes Ensure Long Service Life
Conductor: High-purity tin-plated copper or aluminum alloy is used to enhance oxidation resistance and conductivity stability.
Insulation and Sheath: Cross-linked polyethylene (XLPE) or low-smoke halogen-free flame-retardant polyolefin is used, possessing excellent weather resistance, flame retardancy, and environmental performance.
Special Additives: UV absorbers and light stabilizers are added to the formula to effectively resist aging and cracking caused by long-term sun exposure.
