Photovoltaic Single Certification Series Cable Materials

Serial number Product name Product grade Main uses of the product
1 125°C irradiated cross-linked halogen-free low-smoke flame-retardant polyolefin insulation E5125-D  

For EN50618 standard photovoltaic cables
2 125°C irradiated cross-linked halogen-free and low-smoke flame-retardant polyolefin sheath E3125-D

产品性能参数 Product Property Standards

 

Testing items

  

Unit

 E5125-D E3125-D
Standard value Typical values Standard value Typical values
Density g/cm³ ≤1.40 1.27 ≤1.50 1.44
Shaw hardness A 95±2 97 95±2 97
Tensile strength Mpa ≥9.0 12.0 ≥9.0 12.5
Elongation at break % ≥150 200 ≥150 170
Volumetric resistivity Oh · cm 1×1014 6.7×1015 ≥1×1012 2.3×1014
Air thermal aging test ℃xh 158×168 150×168
The rate of change in tensile strength % ≤±25 +12.5 ≤±25 +8.5
Rate of change in elongation at break % ≤±25 -10.5 ≤±25 -11.5
Acid resistance test 45g/L oxalic acid solution, 23°Cx168h 45g/L oxalic acid solution, 23°Cx168h
The rate of change in tensile strength % ≤±30 -7 ≤±30 -9
Elongation at break % ≥100 160 ≥100 150
Alkali resistance test 40g/L sodium hydroxide solution, 23°Cx168h 40g/L sodium hydroxide solution, 23°Cx168h
The rate of change in tensile strength % ≤±30 -9 ≤±30 -8
Elongation at break % ≥100 150 ≥100 140
Damp-heat test Relative humidity 85%, 85±2°C× 1000h Relative humidity 85%, 85±2°C× 1000h
The rate of change in tensile strength % ≤-30 +2 ≤-30 +3
Rate of change in elongation at break % ≤-30 -3 ≤-30 -3
Low temperature impact embrittlement ℃ -40 -40
Failure number individuals ≤15/30 0/30 ≤15/30 0/30
Oxygen index % — — ≥30 33
PH value — ≥4.3 5.8 ≥4.3 5.8
Conductivity μs/ mm| ≤10 1.9 ≤10 2.1
Thermal extension ℃, Mpa.min 250±3, 0.2,15 250±3, 0.2,15
Elongation under load % ≤100 40 ≤100 45
Permanently deformed after cooling % ≤25 0 ≤25 0