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Introduction to photovoltaic cable applications

1 year ago 209 0 News

It refers to solar technology, also known as solar cable; it is increasingly used in China. In addition to the rapid development of government-supported photovoltaic power plants, private investors are also actively building factories to launch solar modules for sale worldwide. Photovoltaic cables will become one of the future green energy technologies. There is no doubt that in order to get the best profit, companies in the industry need to learn from countries and companies that have years of experience in solar applications.

Building a cost-effective, profitable photovoltaic power plant represents the most important goal and core competencies of all solar manufacturers. In fact, profitability depends not only on the efficiency or high performance of the solar modules themselves, but also on a range of components that appear to be not directly related to the components. However, all of these components should be selected based on the long-term investment objectives of the tenderer. The high quality of the selected components avoids the inability of the solar system to be profitable due to high maintenance and maintenance costs.

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In fact, solar systems are often used under harsh environmental conditions such as high temperatures and ultraviolet radiation. In Europe, sunny days will cause the solar system to have an on-site temperature of up to 100 °C. At present, we can use various materials such as PVC, rubber, TPE and high quality cross-linking materials, but unfortunately, rubber cables with a temperature of 90 ° C, and even PVC cables with a temperature of 70 ° C. It is also often used outdoors, which obviously will greatly affect the life of the system.

Environmental stress

For photovoltaic cable applications, materials used outdoors should be based on UV, ozone, severe temperature changes and chemical attack. The use of low-grade materials under such environmental stresses will cause the cable jacket to be brittle and even break down the cable insulation. All of these conditions directly increase cable system losses, and the risk of cable shorts increases, and in the medium to long term, the likelihood of fire or personal injury is higher.

The solar cable is an electron beam cross-link cable rated at 120 ° C and is resistant to harsh weather conditions and mechanical shocks in its equipment. Solar cables, in outdoor environments, have a service life eight times that of rubber cables and 32 times that of PVC cables. These cables and components not only have the best weatherability, UV and ozone resistance, but also withstand a wide range of temperature changes.

The solar cable is rated for 120 °C. This rating is equivalent to 18 years at a continuous temperature of 90 ° C; and a longer life when the temperature is below 90 ° C. In general, solar equipment is required to have a service life of more than 20 to 30 years. For these various reasons, the use of dedicated solar cables and components in solar energy systems is highly desirable.

Mechanical load resistance

In fact, during installation and maintenance, the cable can be routed over the sharp edges of the roof structure while the cable is subjected to pressure, bending, tension, cross-tension loads and strong impact. If the cable jacket is not strong enough, the cable insulation will be severely damaged, affecting the life of the entire cable or causing problems such as short circuits, fire and personal injury.

Materials that are cross-linked by radiation have high mechanical strength. The cross-linking process changes the chemical structure of the polymer, and the fusible thermoplastic material is converted to a non-fusible elastomeric material. Cross-linked radiation significantly improves the thermal, mechanical, and chemical properties of the photovoltaic cable insulation.

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