Low-loss photovoltaic cables support photovoltaic projects, improving energy conversion efficiency.
Photovoltaic cables, officially known as "cables for solar photovoltaic power generation systems," are special cables specifically designed for solar photovoltaic power generation systems. They act like the "blood vessels" of the photovoltaic system, safely and efficiently transmitting the direct current generated by the solar panels to inverters, combiner boxes, or energy storage devices, ensuring stable power delivery.
From the outside, photovoltaic cables may not appear significantly different from ordinary cables, but in reality, they involve many special considerations in their design and manufacturing. Since photovoltaic power generation systems are mostly installed outdoors, exposed to harsh environments such as direct sunlight, wind, rain, and extreme temperature fluctuations, photovoltaic cables need to possess superior weather resistance, UV resistance, chemical corrosion resistance, and excellent electrical performance—qualities not found in ordinary cables—to ensure long-term stable operation in complex outdoor environments.
Photovoltaic cables possess exceptional weather resistance, maintaining stable performance under various harsh environmental conditions. They utilize special insulation and sheathing materials that have undergone UV and ozone-resistant treatments, effectively resisting UV aging under direct sunlight. It can typically withstand more than 3,000 hours of UV aging tests without significant cracking, far exceeding the UV resistance of ordinary cables.
In terms of temperature adaptability, photovoltaic cables also perform exceptionally well, operating stably within a wide temperature range of -40℃ to +90℃. They function normally in both the frigid winters of the north and the sweltering summers of the south. In low-temperature winter environments, the cables do not become brittle and maintain good flexibility; while in high-temperature summer exposure, even when the cable surface temperature may reach above 70℃, its insulation layer does not soften, ensuring stable power transmission. Furthermore, photovoltaic cables exhibit excellent chemical corrosion resistance, withstanding common outdoor erosion such as acid rain, salt spray (in coastal areas), and sandstorms. Their sheath material has better resistance to swelling from acid and alkali solutions than ordinary cables, and they are less prone to mold or cracking even after long-term exposure to humid environments. In areas with severe salt spray corrosion, such as near the sea, ordinary cables may quickly corrode and be damaged, while photovoltaic cables can operate stably for extended periods, ensuring the power generation efficiency of the photovoltaic system.
During the installation and maintenance of photovoltaic power generation systems, photovoltaic cables face numerous mechanical stresses. To meet these challenges, photovoltaic cables are designed and manufactured using special processes, featuring high-strength sheaths and insulation layers. Its insulation and sheath materials undergo special treatment, resulting in high mechanical strength and abrasion resistance. This process enables the cable to withstand greater mechanical stress, maintaining structural integrity even when subjected to bending or stretching forces, effectively ensuring the safe and stable operation of itself and the entire power generation system.
Photovoltaic cables, with their superior weather resistance, excellent mechanical load capacity, and optimized electrical performance, have become an indispensable key component in photovoltaic power generation systems. From large-scale ground-mounted photovoltaic power plants to distributed residential photovoltaic systems, and even photovoltaic projects in special environments, photovoltaic cables play a vital role in various application scenarios. Looking to the future, with the continuous development of the new energy industry, photovoltaic cables will usher in an even broader market space.
