Features of aluminum foil for transformer

The main characteristics of aluminum foil for transformers are as follows:

First, aluminum foil has good electrical conductivity. Aluminum is an excellent conductive material, and its conductivity is one of the higher common metals. In contrast, copper is the most conductive material, but the conductivity of aluminum is similar to that of copper, which can meet the conductivity requirements of transformers. Therefore, the use of aluminum foil as the conductor of the transformer can effectively transmit electrical energy.

Second, the aluminum foil has a low electrical resistance. The resistivity of aluminum is relatively small, which can reduce the energy loss of the current in the conductor and improve the efficiency of the transformer. In addition, the surface of the aluminum foil is smooth, and the resistance loss when the current flows is small.

Furthermore, the aluminum foil has good heat dissipation performance. Since the transformer will generate a certain amount of heat during the working process, it needs to be dissipated to maintain its normal operating temperature. Aluminum foil has a high thermal conductivity, which can quickly transfer heat from the transformer to the surrounding environment, and improve the heat dissipation effect of the transformer.

In addition, aluminum foil has a lower density. Compared with copper foil, the density of aluminum foil is lower, so under the same volume, the quality of aluminum foil is lighter. This feature makes the structure of the transformer using aluminum foil more portable, which is conducive to the manufacture, installation and transportation of the transformer.

Finally, aluminum foil has good corrosion resistance. The surface of the aluminum foil will generate a dense aluminum oxide film, which can effectively prevent the erosion of air, moisture and other chemicals. This feature enables the aluminum foil to operate stably for a long time in the working environment of the transformer and prolong the service life of the transformer.

In summary, the use of aluminum foil in transformers has the characteristics of good electrical conductivity, low resistance, excellent heat dissipation, light weight, and corrosion resistance, which can meet the working requirements of the transformer and has a certain economy. However, in contrast, the conductivity of copper foil is better, but the price is higher. Therefore, in some applications that do not require high cost, you can choose to use aluminum foil to make transformers.