Copper Foil & Strip
Copper Foil For Transformers
Copper foil for transformer windings in alloy C1100, thickness 0.2 to 3.0 mm and width 50 to 1350 mm, with inner diameters of 300, 400 or 500 mm or customised. Content is at least 99%, conductivity at least 99% IACS and tensile strength above 193 MPa.
- Oxygen free electrolytic copper C1100
Product Overview
Copper foil for transformer windings in alloy C1100, thickness 0.2 to 3.0 mm and width 50 to 1350 mm, with inner diameters of 300, 400 or 500 mm or customised. Content is at least 99%, conductivity at least 99% IACS and tensile strength above 193 MPa. The material is oxygen free electrolytic copper with oxygen content below 0.02% and purity of 99.95% or higher, and complies with American, European, German and Japanese standards.
Key Benefits
- Foil windings give a high fill factor and good short circuit strength
- Conductivity of at least 99% IACS
- Oxygen free electrolytic copper with oxygen below 0.02%
- Compliance with American, European, German and Japanese standards
- Support from manufacturing through assembly, maintenance and repair
Problems It Solves
- Round wire windings with poor fill factor in low voltage high current coils
- Copper of uncertain purity that fails to meet design conductivity
- Material that will not satisfy an international standard requirement
- Foil width that does not match the coil height
Where It Is Used
Applications And Buyers
Application Scenarios
- Foil wound distribution transformers
- Dry type transformer windings
- Low voltage high current windings
- Transformer repair and rewinding
Who It Is For
- Transformer manufacturers using foil windings
- Dry type transformer producers
- Rewind and repair workshops
- Electrical equipment manufacturers
Technical Features And Specifications
Technical Features
- Alloy C1100
- Thickness 0.2 to 3.0 mm
- Width 50 to 1350 mm
- Inner diameter 300, 400, 500 mm or customised
- Oxygen free electrolytic copper, purity 99.95% or higher, oxygen below 0.02%
- Conductivity not less than 99% IACS
- Tensile strength above 193 MPa
| Alloy | C1100 |
|---|---|
| Thickness | 0.2 to 3.0 mm |
| Width | 50 to 1350 mm |
| Inner Diameter | 300 / 400 / 500 mm or customised |
| Content | Not less than 99% |
| Purity | 99.95% or higher |
| Oxygen Content | Below 0.02% |
| Conductivity | Not less than 99% IACS |
| Tensile Strength | Above 193 MPa |
| Standards | American, European, German and Japanese |
How It Is Made And Checked
Materials Process And Quality Control
Materials
- Oxygen free electrolytic copper C1100
Manufacturing Process
- Rolling
- Slitting
- Annealing
- Coiling
Quality Control
- Specification agreed in writing before production starts
- First article or sample approved against the agreed specification
- Goods inspected and photographed at the factory before loading
- Inspection report sent to you before the container sails
Customisation Options
What Can Be Varied
- Thickness from 0.2 to 3.0 mm
- Width from 50 to 1350 mm to suit coil height
- Coil inner diameter including customised sizes
- Temper and edge condition
- Interleaving and packaging
Compared With The Alternatives
| Copper strip for transformers | Foil and strip are the same C1100 material and specification; the distinction is how it is used, with foil wound as a full height sheet and strip wound as a narrower band. |
|---|---|
| Aluminium foil | Copper's 99% IACS against aluminium's 63% means a smaller winding for the same losses, at higher cost and weight. |
Use Guide
- Set foil width from the coil height so the winding builds evenly
- Confirm edge condition, since burrs damage interlayer insulation
- Check the mill certificate for conductivity and purity
- Store coils dry to limit surface oxidation
Questions
Questions Buyers Ask About This Product
What is the conductivity?
Not less than 99% IACS, from oxygen free electrolytic copper of 99.95% purity or higher.
Which standards does it meet?
American, European, German and Japanese standards.
What widths can you supply?
50 to 1350 mm, with thickness from 0.2 to 3.0 mm.
What is the difference between your copper foil and copper strip?
Both are C1100 to the same specification; the difference is the winding method, foil being used as a full coil height sheet.
What coil inner diameters are available?
300, 400 and 500 mm, or customised to your winding machine.
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Get A Price For Copper Foil For Transformers
Send the duty figures, the material if it is fixed, and the quantity. We will confirm the specification and quote against it.