The winding is one of the most important components of the transformer and is the conductive part of the transformer. The primary winding of the transformer converts electrical energy into magnetic field energy through the iron core, and the secondary winding restores the magnetic field energy into electrical energy through the iron core and outputs it.
There are two main types of layered coils: cylindrical and foil. Foil coils are made of copper foil or aluminum foil for transformer instead of wires. The insulating material and the conductive material are placed together on a special foil winding machine for continuous winding, each layer is one turn, and each layer of copper or aluminum foil is separated by an insulating material.
Foil coils are currently mainly used for low-voltage winding of transformers, and some manufacturers use segmented foil structures to increase the number of turns and use foil winding for high-voltage winding.
Aluminum foil for transformer is mainly used for dry-type and oil-immersed transformer winding. Aluminium foils for transformer winding range from 0.2mm to 3.5mm thickness and 10mm to 1600mm wide. The coil is wound on insulating material such as paper, kraft paper, mylar or glass cloth. Transformer aluminum foil is with high electrical conductivity, good corrosion resistance and beautiful appearance, which is an essential material in the transformer production process.
Haomei Aluminum is specialized in aluminum foil transformer winding, usually this foil is used in coils for transformer winding. The material is generally high-purity aluminum 99.65% like 1050 aluminum foil.
1050 aluminium foil is soft and suitable for winding, 1050 aluminum alloy also has no burrs on the edges, making it safe when laminated with insulating film. The surface is free of oil, scratches, deformation, so that the insulating film can be properly laminated.
Product Name | Aluminium foil for transformer |
Alloys | 1050,1350,1060,1070 |
Temper | O |
Thickness | 0.2-3.5mm |
Width | 10-1600 mm |
Tolerance | ±10% |
Inner diameter | Ø 150mm,Ø300mm, Ø400mm, Ø500mm paper cores;special ID cores; paperless cores; special requirements |
Surface | Smooth surface, free from scratches and impurities |
Conductivity | Transformer windings are guaranteed to be better than 60 % ACS-62.7% ACS under annealed condition |
Application | Transformer winding |
Package | Wooden Pallets/Wooden Boxes |