Photovoltaic projects are now a hot spot. Photovoltaic power generation, wind power generation, and photovoltaic power generation are supported by policies, and the market demand is soaring, and related surrounding industries are also Welcome to spring. This article introduces the relevant issues of aluminum alloy cables and photovoltaic copper cables, hoping to help relevant professionals.

Aluminum alloy cableAlso known as special photovoltaic cable, it is mainly used in photovoltaic power stations, and has the advantages of high temperature resistance, cold resistance, oil resistance, acid and alkali resistance, UV resistance, flame retardant, environmental protection, long service life and so on. It is mainly used in harsh climatic conditions. At present, the practical application of photovoltaic copper cables is far greater than that of photovoltaic aluminum cables. However, with the production and application of new technologies and new materials, the shortcomings of traditional aluminum cables can also be converted into advantages through technology and special processing. Here we will introduce photovoltaic cables.

The direct purchase cost of copper cable is 20%-30% higher than that of aluminum cable, followed by weight. The total weight of the copper cable in the aluminum alloy cable is 25% lighter than that of the copper cable, which is more convenient for construction. The service life of cable polyoxyethylene is 30 years, and the aluminum cable Dow chemical cross-linked polyethylene can be used for at least 40 years.

Although the physical properties of aluminum alloy cables are slightly inferior to those of copper cables, they can be reinforced through technology and special treatment, and even better for copper cables. For example, the current carrying capacity per unit volume of the copper cable (the current passing through when transmitting electrical energy) is relatively stable and is 100%. However, aluminum wire can be solved by technology. When the section of the aluminum cable is increased by 1.5 times, it can be equivalent to the current carrying capacity of the copper cable.

Aluminum alloy cableComparison with the advantages and disadvantages of photovoltaic copper cables

1. Corrosion resistance

The corrosion resistance of copper core cables is average, and the alloy aluminum core cables form a dense oxide film with strong corrosion resistance.

2. Smoke resistance

The smoke and light transmittance of copper core cable is above 60%, while that of aluminum core cable is 99%. % or more, it has obvious advantages in fire prevention.

3. Tensile strength and elongation

The tensile strength and elongation of copper cables are relatively average, while the tensile strength and elongation of aluminum cables are excellent, and the Conducive to construction and laying.

4. Conductivity

The copper cable has low resistance, which is good for transmission and reduces the risk of heat generation, burning and short circuit.