The 300/500V H05V-K/H07V-K series 6mm², 10mm², and 16mm² flexible copper PV solar battery cables are specially designed for solar photovoltaic systems. With excellent weather resistance, conductivity, and flexibility, they serve as core components for power transmission between solar panels, inverters, and combiner boxes, widely used in household distributed photovoltaics, large ground-mounted photovoltaic power plants, and other scenarios.​ I. Core Specifications and Performance Parameters​ Conductor and Conductivity Performance​ 6mm² cable: Stranded with multiple flexible copper wires (7 strands × 1.04mm), with a conductor DC resistance of ≤3.08Ω/km (at 20℃) and a current-carrying capacity (when laid in air) of 42A; 10mm² is 7 strands × 1.35mm, with a DC resistance of ≤1.83Ω/km and a current-carrying capacity of 57A; 16mm² is 7 strands × 1.70mm, with a DC resistance of ≤1.15Ω/km and a current-carrying capacity of 74A.​ The purity of flexible copper is ≥99.95%. After annealing treatment, its flexibility is improved by 30%, with a bending radius of ≤4 times the outer diameter, which can adapt to the multi-angle wiring requirements during solar panel installation.​ Insulation and Sheath Performance​ H05V-K type: The insulation layer is weather-resistant PVC, with a thickness of 1.0mm (6mm²), 1.2mm (10mm²/16mm²), and a temperature resistance range of -25℃ to 70℃; the sheath layer is UV-resistant PVC, with a thickness of 1.2-1.5mm, an overall outer diameter of 10.5-15mm, and ozone aging resistance of 1000 hours without cracks.​ H07V-K type: The insulation layer is upgraded to temperature-resistant PVC, with a thickness of 1.0-1.4mm, and a temperature resistance of -25℃ to 90℃; the sheath layer is added with carbon black additives, with a UV resistance grade of UVW 10, which can be used in outdoor environments for more than 15 years, with a waterproof grade of IP67.​ Electrical Safety Performance​ Rated voltage 300/500V, power frequency withstand voltage 1.5kV/5min without breakdown; insulation resistance ≥100MΩ (at 90℃), short-circuit withstand temperature 160℃ (5 seconds), in line with IEC 60228 and DIN VDE 0281 standards.​ II. Characteristic Applications and Scene Adaptation​ Household Distributed Photovoltaics​ 6mm² cable: Suitable for 5-8kW household photovoltaic systems, connecting solar panels and micro-inverters. It can be piped and buried in roof interlayers or walls. Due to its small diameter and high flexibility, it does not affect the building's appearance.​ 10mm² cable: Adapted to 8-15kW systems, used as the main line from the combiner box to the inverter. It can withstand high roof temperatures in summer (≤70℃), and its wind and rain erosion resistance meets the long-term outdoor use requirements of villas, self-built houses, etc.​ Large Photovoltaic Power Plants​ 16mm² cable: Used as the input line of centralized inverters above 15kW. In open ground power plants, it can be directly buried (burial depth ≥50cm). The sheath's soil corrosion resistance can reach 50 years, adapting to various geological conditions such as sandy and clay soils.​ H07V-K type: Performs excellently in power plants in high-altitude (≥3000m) or high-temperature areas (summer temperature ≥40℃). Its temperature resistance advantage can reduce power loss caused by overheating.​ Special Environment Applications​ Coastal areas: The sheath contains an anti-salt spray formula, passing 96-hour salt spray tests without rust, suitable for island and beach photovoltaic projects;​ Cold regions: It remains flexible at -25℃, allowing construction in winter in cold regions such as Northeast China and Inner Mongolia, avoiding embrittlement and fracture.​ III. Material Technology and Advantages​ The conductor uses oxygen-free flexible copper, with the stranding pitch precisely controlled (12-18 times the conductor diameter), reducing high-frequency skin effect loss and improving photovoltaic power transmission efficiency by 3%-5%.​ The insulation and sheath adopt irradiation cross-linking technology, with a more stable molecular structure and tear resistance ≥12N/mm², which can resist outdoor risks such as bird pecking and wind-blown sand abrasion.​ Each meter of cable is printed with specifications, certification marks, and meterage identifiers, facilitating construction cutting; the color is dedicated photovoltaic black, reducing temperature rise caused by sunlight absorption and slowing down thermal aging.​ This series of cables has passed international certifications such as TÜV and UL, balancing safety and economy. It is a reliable choice for the "generation-transmission-storage" link of photovoltaic systems, and suitable specifications and models can be flexibly selected according to project scale and environmental conditions.