Solar photovoltaic power generation is a power generation technology that directly converts light radiation energy into electrical energy through the photo voltaic effect. DC solar cables are used to connect solar panels, batteries or other power collection units. Because they are laid outdoors, they also need to withstand the erosion of natural conditions such as wind and rain, day and night cold, frost and snow, and ultraviolet rays for a long time. Therefore, they need to be resistant to ozone. , UV resistance, acid and alkali resistance, high temperature resistance, severe cold resistance, dent resistance, halogen-free, flame-retardant characteristics, and compatibility with standard connectors and connection systems. Compared with conventional cables, DC solar cables should have the following characteristics: 

      ① have good resistance to ultraviolet rays, withstand harsh weather and mechanical shock; 

      ② have good resistance to ozone and chemical corrosion; 

      ③ withstand large changes in temperature, generally from- 40℃～120℃, the highest temperature even exceeds 150℃; 

      ④Have good heat resistance (90℃85% humidity, 1000h) performance; 

      ⑤Good low temperature winding and low temperature bending performance; 

      ⑥Have flame retardant performance and low smoke and halogen-free performance 

⑦Pass the dent resistance, heat shrinkage, dynamic penetration test; 

⑧Long service life, under 120℃ working conditions, the normal service life is required to exceed 20 years.