Comparative Analysis of Copper Transformer and Aluminum Transformer

Electricity is the nerve center and source of power for modern social and economic work. However, due to the different recognition and understanding of some transformer manufacturers, in reality, there are often hidden safety hazards that are unavoidable in the work of the power grid and in the early planning and construction. There are undoubtedly irreversible consequences.

At present, most of the transformer windings of domestic power transformer manufacturers use copper wire or copper foil, but aluminum wire or aluminum foil is also used. There are also many debates on the advantages and disadvantages of copper wire transformers and aluminum wire transformers. Industry insiders pointed out that aluminum wire transformers are a common practice in foreign countries, and the embarrassment faced in China is only caused by the long-standing concept of "aluminum is not as good as copper". For this reason, the promotion of domestic "aluminum instead of copper" transformers faces many problems.

Comments on copper wire transformers: copper wire has low resistivity, so it has good electrical conductivity, good thermal conductivity, higher mechanical strength than aluminum wire, better tensile function than aluminum wire, and copper wire has a higher melting point than aluminum wire, so it has strong short-circuit resistance. . Due to the low resistivity and good electrical conductivity of copper wires, it is relatively easy to produce energy-saving transformers that meet energy efficiency standards. For aluminum wire transformers to meet energy efficiency standards, the cross-section of the wires must be increased to increase the volume of the transformer.

Comments on aluminum wire transformers: poor conductivity than copper wire, low melting point, poor short-circuit resistance, poor mechanical strength than copper wire, easy to break the wire, poor resistance to sudden short circuit, poor thermal stability, poor impact resistance, aluminum Under the action of lightning impulse and electric current, the line transformer welded joint is easy to be burnt, and the aluminum material is easy to be oxidized and corroded.

As we all know, electric power, as the basic industry of national economic development, has been closely related to economic and social development and the improvement of citizens' lives, affecting the development and stability of the whole society. Electric power production is characterized by a high degree of automation and the completion of production, supply and sales. Many power plants, transmission lines, substations and electrical equipment work together to form a grid, which requires high reliability of its equipment.

It is worth mentioning that both transformer manufacturers and users should keep up with the pace of technological development, take a long-term perspective and take responsibility. In the final analysis, the key point for users to choose transformer products is not only low price, but also high quality! It's the real deal!