N2XH Cable: The XLPE material has outstanding high-temperature resistance. The long-term operating temperature can reach 90°C, and it can withstand high temperatures of 130°C during short-term overload, performing stably in extreme high-temperature environments such as deserts. At the same time, its low-temperature performance is also excellent, and it can maintain flexibility at a low temperature of -40°C, suitable for installation in cold regions.

PV1-F Cable: The long-term operating temperature of polyolefin materials is usually -40°C to 90°C, which is equivalent to N2XH, but the aging rate is slightly faster under continuous high temperatures (such as over 80°C). However, PV1-F variants optimized for high-temperature scenarios (such as PV1-F 120) can increase the short-term temperature resistance to 120°C, close to the level of N2XH.

N2XH Cable: The XLPE sheath itself has moderate resistance to ultraviolet rays. If used in outdoor exposed environments (such as open laying on brackets), it needs to be additionally added with anti-UV additives or protected by an armor layer. However, its advantage lies in chemical corrosion resistance, which can withstand acid-base substances in the soil, industrial waste gas, etc., making it suitable for underground direct burial or industrial solar power plants.

PV1-F Cable: The polyolefin sheath inherently has good UV resistance, which can be directly exposed to sunlight without additional treatment, and has better ozone resistance and weather resistance. In rainy and high-humidity areas, its hydrolysis resistance is also more prominent, which can reduce the risk of insulation failure caused by moisture penetration, making it an ideal choice for roof photovoltaic and ground array open laying.

N2XH Cable: The XLPE material has higher hardness and tensile strength, excellent impact and wear resistance, and can withstand large mechanical stresses (such as dragging and extrusion during construction). If it is equipped with an armor layer, it can also resist rodent bites and soil pressure, suitable for installation in complex terrains.

PV1-F Cable: The polyolefin sheath has better flexibility but slightly weaker mechanical strength. Long-term friction or severe collision may cause damage to the sheath. Therefore, PV1-F is more suitable for use in environments without severe mechanical stress such as fixed brackets and cable trays. During installation, excessive bending or extrusion should be avoided.

N2XH Cable: When laid in the air at an ambient temperature of 40°C, the current-carrying capacity is about 35A; when directly buried underground, the current-carrying capacity can be increased to 40A due to better heat dissipation. Its low impedance characteristic (DC resistance ≤4.61Ω/km) can reduce power loss in long-distance transmission, suitable for medium-distance connections (more than 50 meters) from photovoltaic arrays to combiner boxes.

PV1-F Cable: Under the same specifications, the current-carrying capacity when laid in the air is about 30A, slightly lower than that of N2XH, which is due to the slightly poor thermal conductivity of polyolefin. However, in short-distance connections between component strings (usually ≤10 meters), the difference in power loss is negligible, and its light weight is more conducive to reducing installation costs.

N2XH Cable: The XLPE insulation layer has a higher dielectric strength (≥20kV/mm), can withstand higher impulse voltage, and is suitable for high-voltage converging scenarios after multi-group series-parallel connection (such as 1000V or 1500V systems). The insulation resistance is usually ≥1000MΩ, with low leakage risk.

PV1-F Cable: The dielectric strength of polyolefin insulation is about 18kV/mm, which is slightly lower but fully meets the voltage requirements of photovoltaic systems (≤1500V). Its insulation resistance is also ≥1000MΩ, and it remains stable in humid environments, suitable for low-voltage connections between components.

N2XH Cable: XLPE material has certain flame retardancy. Some models can reach UL94 V-0 grade by adding flame retardants, which are not easy to spread in fire and produce less smoke, suitable for industrial and commercial roof power plants with high fire protection requirements.

PV1-F Cable: The standard PV1-F has a flame retardancy of UL94 V-2, but it can be upgraded to V-0 grade if a flame-retardant polyolefin formula is adopted. Its halogen-free characteristic (without chlorine and bromine) will not release toxic gases when burned, making it more suitable for photovoltaic projects in densely populated areas (such as school and hospital roofs).

N2XH Cable: Due to the high cost of XLPE materials and more complex structures (especially armored types), the unit price is usually 20%-30% higher than that of PV1-F of the same specification. For example, the price per meter of 4mm² N2XH is about 8-12 yuan, while that of PV1-F of the same specification is about 6-9 yuan.

PV1-F Cable: The lightweight design reduces material usage, and the production process is simpler. The initial purchase cost is lower, suitable for small and medium-sized photovoltaic projects with limited budgets.

N2XH Cable: The service life is usually 25-30 years, which matches the design life of the solar power plant. The failure rate is low, and the operation and maintenance cost is almost negligible. However, once a failure occurs (such as damage during underground laying), the maintenance is difficult and costly, requiring excavation of the ground or removal of the armor.

PV1-F Cable: The standard service life is 20-25 years. If used in high-temperature and strong ultraviolet environments for a long time, the sheath may age and crack, requiring partial replacement every 10-15 years. However, its open laying characteristic makes maintenance more convenient, and the cost of single-section replacement is low.

For large ground power plants (capacity ≥10MW), it is recommended to use N2XH cables for the main lines to ensure the stability of high-power transmission; PV1-F is used for component string connections to balance cost and performance.

For small and medium-sized roof power plants (capacity ≤5MW), PV1-F can be used for the entire system to meet the needs and reduce initial investment.

In extreme environments (such as deserts and coastal areas), priority should be given to cables with stronger adaptability (N2XH or enhanced PV1-F) to avoid high replacement costs caused by early failure.