Copper Strip for Transformer

Copper strip for transformer winding is an important conductor material used in transformer coil manufacturing. Compared with aluminum strip, copper strip provides higher electrical conductivity, better current-carrying capacity and excellent mechanical strength, making it suitable for transformers requiring stable electrical performance and high reliability.

Our copper strip for transformer winding is supplied with accurate thickness, precise width tolerance, clean surface and controlled edge quality. Soft annealed copper strip is commonly used for winding applications because it provides good flexibility and reduces the risk of cracking during bending and coil forming.

We can supply customized copper strip according to customer requirements, including material grade, thickness, width, temper, coil inner diameter, edge condition and packaging method.

We can supply different copper grades for transformer winding applications according to customer requirements.

Conductivity:

Copper strip for transformer winding is required to have high and stable electrical conductivity. High conductivity helps reduce power loss, improve current-carrying capacity and support reliable transformer operation.

• High electrical conductivity

• Excellent current-carrying capacity

• Good ductility and formability

• Suitable for transformer coil winding

• Smooth and clean surface

• Accurate thickness and width tolerance

• Low burr edge for insulation protection

• Soft annealed temper available

• Custom sizes and coil weights available

• Suitable for dry-type and oil-immersed transformers

Copper strip is widely used in transformer winding because it provides excellent electrical and mechanical performance. Its high conductivity helps reduce electrical loss and improve transformer efficiency. In addition, copper strip has good mechanical strength and can maintain stable performance during winding, insulation wrapping and long-term operation.

For transformer manufacturers, the quality of copper strip directly affects winding efficiency, insulation safety and transformer reliability. Therefore, the copper strip should have stable dimensions, smooth surface, controlled hardness and clean edges.

For transformer winding applications, copper strip should meet strict quality requirements.

Copper strip for transformer winding is commonly used in:

• Transformer winding

• Transformer coil manufacturing

• Dry-type transformers

• Oil-immersed transformers

• Distribution transformers

• Power transformers

• Electrical reactors

• Electrical conductor components

• High-performance electrical equipment

Typical production process for transformer winding copper strip:

Raw Material Inspection → Rolling → Annealing → Precision Slitting → Edge Treatment → Surface Inspection → Rewinding → Final Inspection → Packaging

Each process is controlled to ensure stable size, good winding performance and reliable product quality.

• Key inspection items include:

• Material grade inspection

• Thickness tolerance inspection

• Width tolerance inspection

• Surface quality inspection

• Edge burr inspection

• Conductivity testing

• Tensile strength testing

• Elongation testing

• Coil appearance inspection

• Packaging inspection

Copper strip is packed with moisture-proof and export-standard packaging to avoid oxidation, deformation and surface damage during transportation.

Packaging options:

• Plastic film wrapping

• Anti-rust paper protection

• Wooden pallet

• Wooden case

• Export seaworthy packaging

• Customized label and shipping mark

• Q1: What copper grades can you supply for transformer winding?

  We can supply T2, C1100, C11000, ETP copper and other customized copper grades according to customer requirements.

• Q2: Can you provide soft annealed copper strip?

  Yes. Soft annealed copper strip is commonly supplied for transformer winding because it offers good ductility and easy winding performance.

• Q3: What thickness and width can you produce?

  We can supply customized thickness and width according to customer requirements. Common thickness range is 0.05 mm to 3.00 mm, and width can be customized based on transformer coil design.

• Q4: Can you supply copper strip with deburred or round edge?

  Yes. Slit edge, deburred edge and round edge are available. For transformer winding, deburred or round edge is recommended when better insulation protection is required.

• Q5: Why is edge quality important for transformer winding?

  Smooth and low-burr edge helps reduce the risk of damaging insulation paper, insulation film or other insulating materials during winding.

• Q6: Can you provide samples?

  Yes. Samples can be provided according to material availability and customer requirements.

• Q7: Can you produce according to drawings or technical specifications?

  Yes. We can customize copper strip according to customer drawings, technical specifications or application requirements.

• Q8: How is the copper strip packed?

  Copper strip is packed with anti-oxidation paper, plastic film, moisture-proof protection and export wooden pallet or wooden case.