1350 aluminum foil strips are widely used in transformer windings, especially in oil-immersed and dry-type transformers. Their high conductivity ensures high efficiency and stability of the transformer.
1350 aluminum alloy has an aluminum content of over 99.5%, and is known for its high purity and good conductivity.
The conductivity of 1350 aluminum alloy exceeds 62.0% IACS, making it suitable for electrical equipment that requires high conductivity. Additionally, its good formability allows it to be easily processed into various shapes to meet different design requirements.
1350 aluminum strips are supplied in the O-temper (fully annealed), which enhances flexibility and elongation (20-35%, depending on thickness), making them easy to coil and shape.
1350 Transformer Aluminum Foil Strips Features
- High conductivity: The conductivity of 1350 aluminum alloy exceeds 62% of the International Annealed Copper Standard (IACS), ensuring efficient current transmission and improved transformer performance.
- Excellent formability: 1350 alloy has good ductility, allowing easy processing into various shapes and sizes to meet various transformer design requirements.
- Corrosion resistance: 1350 aluminum strips have strong corrosion resistance, helping extend the service life of transformer components and improving their reliability.
- Thermal stability: These aluminum strips can withstand temperatures up to 130°C and maintain their integrity under high-temperature working conditions.
Transformer Aluminum Foil Strips 1350 Types
Bare Aluminum Foil Strips 1350 for Transformers Winding
- Application: Primarily used as winding material for oil-immersed transformers.
- Characteristics: The bare foil has no additional coating and is used directly as the conductive part, suitable for long-term use in oil-immersed environments.
Coated Aluminum Foil Strips 1350 for Transformers Winding
- Application: Primarily used as interlayer insulation material.
- Characteristics: The surface is coated with an insulating layer, improving interlayer insulation performance and preventing short circuits and electrical interference.
Transformer Aluminum Foil Strips 1350 Specifications
| Product name | Aluminium Foil strip for transformer winding |
| Grades | 1050, 1350, 1060, 1070 |
| Temper | O |
| Specification |
Thickness:0.2-3.5mm Width:20-1400mm |
| Quantity tolerance | ±10% |
| Core inner diameter | Standard sizes include Ø150 mm, Ø300 mm, Ø400 mm, and Ø500 mm, with special sizes available upon request. |
| Surface treatment | Mill finish |
| Application | Transformer winding |
| Packaging | Wooden Pallet |
Haomei Aluminum Transformer Aluminum Strips Edge and Surface Quality
The edges are deburred and chamfered (burr height ≤ 0.03 mm) to prevent damage to the insulation layer during winding. The surface is smooth and free of scratches, meeting the mill finish standards.
The transformer aluminum strips produced by Haomei Aluminum undergo strict deburring and chamfering processes to ensure that the burr height is controlled to ≤ 0.03 mm.
This precise control not only improves the mechanical processing quality of the strip but, more importantly, prevents burrs from damaging the insulating paper or enamel-coated wire during winding, thereby significantly reducing the risk of winding breakdown and ensuring electrical safety during long-term transformer operation. Haomei ensures clean, neat, and defect-free edges with high-precision trimming equipment and comprehensive quality monitoring to meet the stringent requirements for high-quality winding materials.
The transformer aluminum strips produced by Haomei Aluminum strictly adhere to mill finish standards in terms of surface quality, ensuring that the strip surfaces are smooth, even, and free of scratches.
During the production process, Haomei uses high-precision cold rolling technology and an online surface inspection system to monitor the surface quality of the aluminum strips throughout the process, preventing defects such as indentations, wrinkles, oxidation spots, and oil stains. The excellent surface finish not only improves winding efficiency but also ensures tight adhesion with insulating materials, enhancing thermal conductivity and electrical performance, thereby providing customers with stable, efficient, and reliable transformer winding solutions.
Advantages of 1350 Aluminum Foil Strips for Transformers
High Conductivity
Due to its high aluminum content and good conductivity, 1350 aluminum foil effectively transmits current, enhancing the efficiency of transformers.
Excellent Formability
1350 aluminum foil can be processed into various thicknesses and shapes, meeting the diverse requirements of transformer design.
Good Corrosion Resistance
The corrosion resistance of the aluminum alloy ensures long-term use in harsh environments.
Cost-Effectiveness
Compared to copper materials, aluminum alloys are more cost-effective, providing an economical solution for transformer manufacturing.
With its high purity, excellent conductivity, good formability, and cost-effectiveness, 1350 aluminum alloy is an ideal choice for transformer winding materials. Its application in both oil-immersed and dry-type transformers, in the form of bare or coated foil, meets various electrical insulation and conductivity needs, ensuring stable operation and long-term reliability of the transformer.
Characteristics of 1350 O Aluminum Foil for Transformer Windings
- Excellent Mechanical Properties: 1350 aluminum foil exhibits outstanding ductility and tensile strength, allowing it to be wound into tight and stable coils. This makes it perform exceptionally well in transformer winding applications, capable of withstanding various stresses during processing.
- Good Plasticity and Processing Performance: The foil has good plasticity with uniform thickness and does not produce burrs during stamping, which enhances processing precision and surface quality. This is especially important for winding materials that require precise dimensions and smooth surfaces.
- Superior Electrical and Thermal Conductivity: 1350 aluminum foil offers excellent electrical and thermal conductivity, ensuring efficient current and heat transfer in transformers, reducing energy loss, and improving overall performance.
- Corrosion Resistance and Weldability: The foil's superior corrosion resistance allows it to withstand corrosive factors in various environments, extending the transformer’s service life. Additionally, its good weldability makes it more convenient during manufacturing.
- High-Quality Surface Finish: The 1350 aluminum foil has a smooth surface with low pinhole density, which enhances the insulation performance and appearance of transformer windings. The smooth surface reduces potential electrical fault points, improving the reliability of the windings.
- High-Temperature Resistance: The foil can endure high temperatures up to 130°C, adapting to the thermal challenges that transformers may face during prolonged operation. This characteristic ensures its stability and safety under high-temperature conditions.
1070 O Aluminum Strips Chemical Composition
| Element | Al | Si | Fe | Mg | Zn | Mn | Ti | Cu | V |
| Standard Value | ≥99.7 | 0.0431 | 0.203 | 0.0013 | 0.0093 | 0.0104 | 0.02 | 0.0022 | 0.0039 |
1350 Transformer Aluminum Foil Strips vs Copper
| Dimension | Advantage | Description |
| Cost-effectiveness | 1350 transformer aluminum foil strips offer significant cost advantages, reducing material costs by 15% to 20%. | Compared to traditional copper winding materials, 1350 aluminum foil strips provide more stable raw material prices and lower procurement costs, while ensuring electrical performance. This makes it especially suitable for large-scale mass production projects, helping customers improve overall economic benefits. |
| Thermal Performance | 1350 transformer aluminum foil strips excel in thermal performance, offering excellent thermal conductivity and corrosion resistance, and can operate stably in environments up to 130°C. | High-purity aluminum quickly conducts heat, preventing hotspot accumulation in the winding, while its strong corrosion resistance extends product life. Haomei optimizes annealing and surface treatment technologies to ensure reliability under high-temperature conditions. |
| Lightweight | 1350 transformer aluminum foil strips have a natural advantage in lightweight applications due to their low density (2.703 kg/m³), greatly simplifying handling, assembly, and installation. | The weight of the aluminum strips is significantly lower than that of copper, reducing transportation and installation challenges. This is especially advantageous in confined spaces or when lifting is required, helping to optimize overall structure and achieve energy-saving and carbon-reduction goals. |
1350 Transformer Aluminum Strips Manufacturing and Quality Assurance
- Manufacturing Process: Includes cold rolling, annealing, and edge treatment to achieve uniform thickness and mechanical properties.
- Certifications: Compliant with ASTM, GB, and ISO 9001 standards.
- Packaging: Packaged in wooden pallets or cartons to prevent damage during transportation.
1350 Transformer Aluminum Strips Applications
1350 aluminum strips are primarily used in:
- Dry-type and oil-immersed transformers.
- High/low voltage electrical equipment, reactors, and power capacitors.
- Solar and distribution systems.
| Application Type | Description |
| Oil-immersed Transformers | 1350 aluminum foil strips are used as winding materials in oil-immersed transformers. Due to their good electrical conductivity and high mechanical strength, they effectively carry electrical current while directly contacting the insulating oil in the transformer. The insulating oil not only serves as a coolant but also provides additional electrical insulation, ensuring stable operation of the equipment. The bare aluminum foil in this application helps improve the overall efficiency and lifespan of the transformer, reducing energy losses. |
| Dry-type Transformers | 1350 coated aluminum foil strips are used as winding materials in dry-type transformers, with a focus on providing necessary electrical insulation. Since dry-type transformers do not use oil immersion cooling, the insulation requirements for the windings are more stringent. The coated 1350 aluminum foil strips prevent electrical interference between windings and increase their heat and voltage resistance. The coating provides good insulation performance inside the transformer, ensuring the safety and reliability of the equipment. |
1350 aluminum strips, with their high purity, excellent electrical and thermal conductivity, formability, and corrosion resistance, are the preferred choice for transformer windings. These properties help improve transformer efficiency and durability.
Haomei Other Alloy Transformer Aluminium Strips
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1050 Transformer Aluminium Strips
1050 aluminum strip has a conductivity better than 60% IACS. It is widely used in transformer windings. Its main applications include windings of dry and oil-immersed transformers.
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1060 Transformer Aluminium Strips
Annealed or O-state 1060 aluminum strip has higher flexibility and ductility, and its conductivity is better than 61.5% IACS.
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1070 Transformer Aluminium Strips
1070 aluminum strip has a conductivity of more than 62.7% IACS, and its thickness is generally 0.1mm to 3.5mm, which can adapt to the design requirements of different transformer windings and provide flexible options.