Aluminum Foil for Cast Resin Transformer

Product Detail

The aluminium foil used for transformer winding is required high-quality pure aluminum as raw materials which has high conductivity, soft characteristics, smooth surface, is an ideal material for the production of dry-type transformers, and the key raw material for transformer winding.
Designers of transformer manufacturer usually select 1050,1060,1070,1350 grade, the aluminum content is min 95% but commonly above 99.6%-99.7 %. Aluminium sheet foils are mainly used in dry-type transformers of high and low voltage winding as a conductive material. As aluminum transformers tend to be less costly than copper transformers, therefore, aluminium strip is the most popular material for transformer strip.
Transformer aluminium foil application
Transformers are designed and built with copper or aluminium windings. But transformers using aluminum foil winding have advantage of small size, light weight, good insulation properties, flame retardant, non-polluting, partial discharge, resistant to moisture, smooth and reliable operation, low noise, and low maintenance cost.
In dry type transformers, aluminium–aluminium windings have been commonly used nowday. Aluminium foil strip can replace copper conductors in distribution transformers. Aluminum foil and sheet in appropriate strip widths and lengths have widely replaced wire in electrical transformers.
Demand for aluminum foil using for oil transformer is new and will be more.
Kunyao Aluminium Strip/Foil Features
We produce high conductivity roll type electrolytic aluminium strips used to manufacture the windings of electrical transformer, distribution transformer, cast resin transformer.
The strip conductor is of high conductivity annealed quality.
Slitting is closely controlled to assure strip free of cracks, roughness, scaling, stretch marks.
Paper is interleaved between layers of each aluminium coil according to requirement of clients.
Each coil is tightly wound.
Coil is packed with eye to wall or eye to sky accordingly by sea worthy wooden pallet or box.
Foil is free of dents, surface defects, waviness, scale, or any other imperfections which would cause problems in either the winding, performance, or reliability of a quality manufactured dry or wet transformer.
The surface and edges of the foil is free of burrs and imperfections. The edges conform to a Round Edge. 
The strip is shipped in tightly wound rolls with proper edge register.
Specification of Aluminium Strips and Aluminium Foils



Specification of Aluminium Strips and Aluminium Foils
Grade & Temper	Thickness	Width
1050/1060/1070/1350-HO(O)	0.2-3.0 mm	20-1350 mm
Inner Diameter	Conductivity Number (% IACS)	Reisitivity number                 (O·mm² /m)
150/300/400/500 mm	=61	=0.027548
Elongation (%)	Tensile strength(Mpa)	Density in 20°C
20	>60	2.7kg/cm3
Note:	Meet RoHS, SGS, REACH, YS/T 713-2009

Wrought aluminium and aluminium alloy chemical composition
Grade	Al(%) MIN	Si(%) Max	Fe(%) Max	Cu(%) Max	MN(%) Max	Zn(%) Max	Mg(%) Max	Ti(%) Max	Other elements(%)
1050	99.5	0.25	0.4	0.05	0.05	0.05	0.05	0.03	0.03
1060	99.6	0.25	0.35	0.05	0.03	0.05	0.03	0.03	0.03
1070	99.7	0.25	0.04	0.03	0.04	0.04	0.03		0.03
1350	99.5	0.1	0.05	0.01	0.01	---	---		0.03

We produce high conductivity roll type electrolytic aluminium strips used to manufacture the windings of electrical transformer, distribution transformer, cast resin transformer.
1 The strip conductor is of high conductivity annealed quality.
2 Slitting is closely controlled to assure strip free of cracks, roughness, scaling, stretch marks.
3 Paper is interleaved between layers of each aluminium coil according to requirement of clients.
4. Each coil is tightly wound.
5. Coil is packed with eye to wall or eye to sky accordingly by sea worthy wooden pallet or box.
6. Foil is free of dents, surface defects, waviness, scale, or any other imperfections which would cause problems in either the winding, performance, or reliability of a quality manufactured dry or wet transformer.
7. The surface and edges of the foil is free of burrs and imperfections. The edges conform to a Round Edge. 
8. The strip is shipped in tightly wound rolls with proper edge register.

9.MOQ is small to 500 KG.



If you're looking for aluminum foil for cast resin transformer, welcome to buy or wholesale the aluminum products from our factory. As one of the leading manufacturers and suppliers, we won't let you down.