Today, we will demystify foil winding and wire winding and gain an in-depth understanding of their differences and applications in power transmission.
01
Foil wound vs. wire wound
Foil wrapping, as the name suggests, is made by wrapping aluminum foil or copper foil. Each turn is a layer of foil that makes up the entire winding. In contrast, wirewound is made of one or more wires wound in a circle, and the conductor material is mainly aluminum wire or copper wire.
02
Differences in applicable scenarios
Foil winding is suitable for low voltage and high current windings, while wire winding is mainly used for transformers with rated currents below 200A. This difference is mainly due to their performance characteristics under different working conditions.
03
Advantages & Disadvantages of Foil Wrapping
Foil winding is easy to make, has high winding efficiency, stronger short-circuit resistance and low loss. Not only can foil winding be completed faster, but it also performs well in the face of short circuits, reducing potential risks.
However, the disadvantage of foil winding is that the height of the coil is limited by the height of the foil and requires a special unwinding machine for production. This limitation may cause certain inconveniences under some special working conditions.
04
Characteristics of wire winding
Relatively speaking, wire winding production is relatively complex and time-consuming. High-current wire windings tend to be uneven and have poor short-circuit resistance. However, the cost of wire-wound conductor materials is lower, the coil height is not limited, and it has good heat dissipation properties.
