Jiaxing Zhenhua Wire & Cable Co.,Ltd

High quality product, professional service, being the core supplier in laser industry!

Home > News > Content
Solar Cable Cold, Heat, Anti-ultraviolet
- Jul 12, 2017 -

In recent years, the application of solar (PV) power generation is becoming more and more extensive and rapid development. In addition to the main equipment, such as PV modules, inverters and booster transformers, the PV Solar Cables are connected to the whole Profitability, operational safety, whether it is efficient, also plays a vital role, the following on the photovoltaic power plant in the common use of Solar Cables and materials and the use of the environment to do a detailed introduction.

Solar Cable according to the system of photovoltaic power plants can be divided into DC Solar Cables and AC Solar Cables, according to the use and use of different types of environment are as follows:

1. DC Solar Cable

(1) Series Solar Cable between component and component.

(2) between the strings and their strings to the parallel distribution between the DC distribution box (confluence box).

(3) DC distribution box to the Solar Cable between the inverter.

The above Solar Cables are DC Solar Cables, outdoor laying more, need moisture, anti-exposure, cold, heat, anti-ultraviolet, some special circumstances need anti-acid and other chemical substances.

2. AC Solar Cable

(1) the connection Solar Cable of the inverter to the step-up transformer.

(2) connection of the step-up transformer to the power distribution unit.

(3) Power distribution unit to the grid or the user's connection Solar Cable.

This part of the Solar Cable for the AC load Solar Cable, indoor environment laying more, in accordance with the general selection of power Solar Cable selection requirements.

3. Photovoltaic Solar Cable

Photovoltaic power plant in a large number of DC Solar Cable to be outdoor laying, environmental conditions are poor, the Solar Cable material should be based on anti-ultraviolet, ozone, severe temperature changes and chemical erosion may be. Ordinary material Solar Cables used in this environment for a long time will cause the Solar Cable sheath to be fragile and even break down the Solar Cable insulation. These conditions will directly damage the Solar Cable system, but also increase the risk of short-circuit Solar Cable, from the medium and long term, the occurrence of fire or personnel injury is also more likely to greatly affect the system life.

Therefore, the use of photovoltaic Solar Cables and components in photovoltaic power plants is very necessary. With the continuous development of photovoltaic industry, photovoltaic supporting parts market gradually formed, the Solar Cable, has developed a variety of specifications of photovoltaic professional Solar Cable products. Recently developed electronic beam cross-linked Solar Cable, rated temperature of 120 ℃, can withstand adverse weather conditions and withstand mechanical shock. Another example is the RADOX Solar Cable is based on the international standard IEC216 developed a solar dedicated Solar Cable, in the outdoor environment, the service life is 8 times the rubber Solar Cable, PVC Solar Cable is 32 times. Photovoltaic Solar Cables and components not only have the best weather resistance, resistance to ultraviolet light and ozone erosion, but also can withstand a wider range of temperature changes (for example: from -40 to 125 ℃). In Europe, the technical staff through the test, the roof can be measured on the temperature of up to 100 ~ 110 ℃.

4. Solar Cable conductor material

PV Solar Cables used in photovoltaic power plants in most cases for outdoor long-term work, subject to the constraints of construction conditions, Solar Cable connections using connectors. Solar Cable conductor material can be divided into copper core and aluminum core. Copper core Solar Cable has better antioxidant capacity than aluminum, long life, good stability, low pressure drop and small power consumption characteristics; in the construction of the copper core because of the flexible, easy to bend the radius of small, so easy to turn, Easy to handle; and copper core anti-fatigue, repeated bending is not easy to break, so easy wiring; while the copper core of high mechanical strength, can withstand greater mechanical tension, to the construction of the laying of great convenience, but also for the mechanized construction to create the conditions The On the contrary aluminum core Solar Cable, due to the chemical properties of aluminum, the installation of the joints prone to oxidation (electrochemical reaction), in particular, prone to creep phenomenon, easily lead to failure.

Therefore, the use of copper Solar Cables in the use of photovoltaic power plants, especially in the field of direct laying Solar Cable power supply, has a prominent advantage. Can reduce the accident rate is low, improve the reliability of power supply, construction operation and maintenance and so on. This is where the current domestic Solar Cable power supply in the main use of copper Solar Cable reasons. The same time as the above-

Solar energy technology will become one of the future of green energy technology, solar or photovoltaic (PV) in China increasingly widely used, in addition to the rapid development of government-supported photovoltaic power plants, private investors are also actively build factories, plans to put into production in the global sales Of the solar modules.

The characteristics of the PV Solar Cable is determined by its Solar Cable insulation and sheathing material. We call it the cross-linked polyolefin material. After irradiation with the irradiating accelerator, the molecular structure of the Solar Cable material will change. Aspects of performance. In practice, during installation and maintenance, the Solar Cables can be routed on the sharp edges of the roof structure, while the Solar Cables are subject to pressure, bending, tension, cross-tensile loads and strong shocks. If the Solar Cable jacket is not strong enough, the Solar Cable insulation will be severely damaged, thus affecting the life of the entire Solar Cable, or lead to short circuit, fire and personnel damage and other issues. Radiation cross-linked material, with high mechanical strength. Radiation cross-linking changes the chemical structure of the polymer, and the thermoplastic material is converted into a cross-linked material. Radiation cross-linking significantly improves the thermal properties, mechanical properties and chemical properties of the Solar Cable insulation sheath material, greatly improving the service life of the Solar Cable.