The voltage rating of photovoltaic (PV) cables is typically determined based on the system's rated voltage and actual usage requirements. Common PV cable voltage ratings on the market include 0.6/1kV, 1.8/3kV, 10kV, and 35kV. 0.6/1kV is suitable for small-power PV power plants, primarily used to connect solar panels and inverters. 1.8/3kV is suitable for medium-power PV power plants, also used for connecting solar panels and inverters. 10kV and 35kV are suitable for large-scale PV power plants, primarily used for connecting inverters and the power grid.
PV cables are available in various specialized models to suit different connection scenarios. The PV1-F series is a special cable designed specifically for solar power generation systems. PV1-F-AC is suitable for AC connections from inverters to step-up transformers, from step-up transformers to distribution equipment, and from distribution equipment to the power grid or users. PV1-F-DC is suitable for series connections between PV modules, parallel connections between strings, and DC connections from DC distribution boxes to inverters. This series uses low-smoke, halogen-free, flame-retardant polyolefin materials. H1Z2Z2-K is a photovoltaic-specific cable designed for European standards, suitable for interconnecting photovoltaic systems such as solar panel arrays. It offers good UV resistance, high-temperature resistance, and aging resistance, but is not recommended for direct burial. PV-YJYJ and GFDC-YJVB cables are suitable for outdoor photovoltaic power generation systems, offering good weather resistance and UV resistance. Insulation and sheath materials are typically cross-linked polyethylene (XLPE). DC combiner cables are mainly used for DC power transmission between the photovoltaic system combiner box and the inverter. They are usually two-core parallel flat cables, some with armor protection to improve mechanical strength.
To adapt to extreme or specific application scenarios, various photovoltaic cables with special protective functions have been developed. For floating photovoltaic systems, waterproof photovoltaic cables with independent air-filled cavities in the sheath layer have been invented. For desert and arid regions, steel-tape armored termite-proof cables providing physical rodent and termite protection have been designed. For extreme environments such as high altitude, strong UV radiation, and low temperatures, high-altitude weather-resistant cables with excellent UV resistance and cold resistance are available. Flexible photovoltaic cables that improve cable flexibility and lifespan in humid environments through special materials and processes.
