What is the differences between copper transformer and alu. Transformer

In fact, whether the transformer uses copper wire or aluminum wire, the cross-sectional area of ​​the core is the same. In addition, there are many other differences. This article mainly lists the following three differences

1. Different performance
Copper winding transformer: good conductivity, high mechanical strength, high thermal conductivity, high price.
Aluminum winding transformer: aluminum has high resistivity, poor strength, and low price.
2. Different characteristics
Copper winding transformer: The most prominent feature is that the transformer has strong short-circuit resistance, that is, the transformer has strong dynamic stability and thermal stability.
Aluminum winding transformer: aluminum is more active and easy to oxidize.
3. Different size
Copper winding transformer: copper wire transformer is smaller in size.
Aluminum winding transformer: aluminum winding transformer is relatively large in size.

General-purpose residential lighting transformers, and even some transformers containing a class of loads, can use aluminum coil power transformers. The benefits are self-evident. What we care about is its winding duty cycle, winding strength, short-circuit overcurrent resistance, weathering index, export oxygen index, etc.