In transformer,Aluminum foil tape is a thin sheet of aluminum material with good electrical and thermal conductivity, which plays an important role in the design and manufacture of transformers.

Aluminum foil tape is commonly used in the windings and shielding of transformers. In the winding, the aluminum foil tape is used as a conductor to direct the current to the proper location. It has a high electrical conductivity and can efficiently transmit electrical energy. For the shielding layer, the aluminum foil tape is used to wrap the winding, providing electromagnetic shielding and reducing electromagnetic interference.

Aluminum foil tape is slightly less conductive than copper tape (copper foil tape), but the advantages of aluminum foil tape are its light weight and cost-effectiveness, making it a common choice in transformer manufacturing. Aluminum foil tape can be customized in size and thickness to meet the specific needs of the transformer.


Compared to copper conductors, aluminum has an electrical conductivity of about 61% of copper, which means that an aluminum conductor of the same size will have a higher resistance. This requires that when designing a transformer, attention be paid to the size and thickness of the aluminum foil strip to ensure that current transfer and energy loss requirements are met. And the fact that aluminum foil tape is relatively light, with a density of about one-third that of copper, makes the transformer lighter. For large transformers, the use of aluminum foil tape reduces the overall weight and facilitates transportation and installation.

Aluminum foil tape has good ductility and good thermal conductivity, which allows it to transfer heat effectively. It can be easily bent and adapted to different shapes of windings. This is useful for manufacturing various types of transformers, windings and connections. In transformers, aluminum foil tape can help dissipate heat and transfer the heat generated to the surrounding environment to maintain the normal operating temperature of the transformer.

While the main conductor in a transformer is usually made of copper wire or copper foil, aluminum foil tape is often used for detail parts such as winding connections and shielding. The exact materials used and structural design will vary depending on the type, specification and manufacturing standards of the transformer.