Photovoltaic Dual 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-S  

Suitable for EN50618 & UL 4703 standard photovoltaic cables
2 125°C irradiated cross-linked halogen-free and low-smoke flame-retardant polyolefin sheath E3125-S

 

Testing items Unit E5125-S E3125-S
Standard value Typical values Standard value Typical values
Density g/cm³ ≤1.40 1.27 ≤1.50 1.44
Shaw hardness A — 97 — 97
Tensile strength Mpa ≥9.0 11.8 ≥9.0 12.6
Elongation at break % ≥150 230 ≥150 170
Volumetric resistivity Oh · cm 1×1014 5.8×1015 ≥1×1012 3.0×1014
Air thermal aging test ℃xh 158×168 150×168
The rate of change in tensile strength % ≤±25 +12.5 ≤±25 +12.5
Rate of change in elongation at break % ≤±25 -13.5 ≤±25 -13.5
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 -6 ≤±30 -8
Elongation at break % ≥100 150 ≥100 140
Damp-heat test Relative humidity 85%, 85±2°Cx1000h Relative humidity 85%, 85±2°C× 1000h
The rate of change in tensile strength % ≤-30 +6 ≤-30 +5
Rate of change in elongation at break % ≤-30 -3 ≤-30 -1
Low temperature impact embrittlement ℃ -40 -40
Failure number individuals ≤15/30 0/30 ≤15/30 0/30
Oxygen index % — — ≥30 36
PH value — ≥4.3 5.8 ≥4.3 5.8
Conductivity μs/ mm| ≤10 3.4 ≤10 2.4
Thermal extension ℃, Mpa.min 250±3, 0.2,15 250±3, 0.2,15
Elongation under load % ≤100 55 ≤100 50
Permanently deformed after cooling % ≤25 0 ≤25 0