TUV 2PfG 1169/IEC, TUV 2PfG 1990/IEC standard
1. Conductor：Flexible stranded tinned copper conductor
2. Insulation: XLPE
3. Sheath: XLPE/PVC/Customized
|TYPE||CrossSection||Conductor Structure||ConductorDiameter||OuterDiameter||Conductor Resistance||Rated Voltage||Rated Current|
|mm²||No.OD (mm)||mm||mm||Ω/Km||V AC/DC||A|
One common factor for most of the photovoltaic power systems is outdoor use, characterized by high temperatures and high UV radiation. Single-core cables with a maximum permissible DC voltage of 1.8 kV Umax. The phase to ground DC voltage rating must be Uo1.5kVDC and a temperature range from -40 °C to +90 °C ambient, 120 °C on the conductor for 25 year service life against thermal ageing. Ambient temperature and conductor temperature is derived from the Arrhenius law for ageing of polymers - ageing of polymers doubles for every 10 °C rise.
DC string cables must be class II double insulated to protect against short circuits and ground faults.
The cable's insulation must be able to withstand thermal and mechanical loads. As a consequence, plastics which have been cross-linked are increasingly used today. The insulation and jacket materials are extremely resistant to weathering, UV-radiation and abrasion . Additionally, it is salt water resistant and resistant to acids and alkaline solutions. It is suitable for fixed installation as well as for moving applications without tensile load. It is especially designed for outdoor use, which means direct sun radiation and air humidity, but due to the halogen free flame retardant cross-linked jacket material the cable can also be installed in dry and humid conditions indoors