High-Quality C1100 Copper Foil & Tape
1. Product Overview
C1100 copper foil/tape is a high-purity oxygen-free copper material designed for electrical and power applications. With ≥99.9% copper purity and 98–100% IACS conductivity, it delivers exceptional performance for transformers, cable sheaths, reactors, and other energy-related systems.
| Specification | Details |
|---|---|
| Grade | C1100 Pure Copper |
| Purity | ≥99.9% |
| Conductivity | 98–100% IACS |
| Thickness | 0.1–3mm |
| Width | 15–1220mm |
| Key Feature | Smooth, burr-free edges via high-speed trimming technology |
2. Core Applications in Power & Transformer Industries
Our C1100 copper foil/tape is widely adopted in critical power infrastructure and transformer manufacturing, ensuring reliable performance under demanding electrical conditions:
2.1 Transformer Manufacturing
Power Transformer WindingsUsed in the windings of distribution transformers, power transformers, and high-voltage transformers. Its high conductivity minimizes energy loss, while precise dimensional control ensures consistent winding quality and electrical performance.
Shielding & Grounding LayersApplied as electrostatic shielding in transformer windings to suppress electromagnetic interference (EMI) and prevent partial discharge, enhancing the transformer's operational safety and service life.
Bushing & Insulation BarriersUsed as conductive barriers in transformer bushings and composite insulation systems, ensuring uniform electric field distribution and preventing electrical breakdown.
Dry-Type Transformer Core LaminationSuitable for use in dry-type transformers, where its corrosion resistance and thermal stability eliminate the risk of oil contamination and improve long-term reliability.
2.2 Reactor & Inductor Applications
Shunt Reactors & Series ReactorsUsed in the windings of reactors for power grids, where high conductivity and burr-free edges prevent arcing and ensure stable operation under AC and DC conditions.
Filter Inductors & ChokesApplied in power filter systems to reduce harmonic distortion, leveraging its low resistance and excellent formability for tight, uniform winding.
2.3 Power Cable & Electrical Systems
High-Voltage Cable Sheaths & ShieldsServes as a conductive shield layer in medium- and high-voltage power cables, providing uniform electric field distribution and protecting against external electromagnetic interference.
Busbar & Distribution EquipmentUsed in low-voltage busbars, switchgear, and distribution panels, offering high conductivity and excellent formability for custom shapes and connections.
Power Grounding SystemsApplied in grounding tapes and connectors for power plants, substations, and industrial facilities, ensuring low-resistance paths for fault currents.
2.4 New Energy & Specialized Power Applications
Wind & Solar Power TransformersDesigned for use in renewable energy transformers, where its corrosion resistance and thermal stability withstand harsh outdoor environments.
Electric Vehicle (EV) Charging SystemsUsed in the windings of EV charging station transformers and inductors, supporting high current loads and fast charging requirements.
3. Production & Manufacturing Process
Our copper foil/tape is manufactured under strict quality control to ensure consistent performance for industrial use:
Raw Material SourcingWe start with high-grade cathode copper (≥99.95% purity) to eliminate impurities and guarantee electrical conductivity.
Melting & Continuous CastingCopper is melted and cast into uniform billets, ensuring consistent chemical composition across the material.
Hot & Cold RollingBillets are hot-rolled into strips, then cold-rolled to precise thicknesses with intermediate annealing for optimal ductility and strength.
High-Speed Trimming & SlittingAs the inventor of high-speed trimming technology, we process strips to deliver smooth, burr-free edges. This prevents electrical arcing and ensures safety in high-voltage applications.
Surface Treatment & Quality ControlOptional anti-tarnish coatings and full testing (conductivity, dimensional accuracy, edge quality) ensure every batch meets international standards.
4. Secondary Processing & Customization
To meet your unique requirements, we offer:
Precision slitting to custom widths (15–1220mm)
Cut-to-length services for sheets or strips
Anti-tarnish/passivation surface treatments
Special packaging for export and long-distance shipping
5. Packaging & Shipping
All products are packaged for maximum protection during transit:
Standard: Coils wrapped in anti-rust paper + plastic film, packed in fumigated wooden crates/pallets
Optional: VCI anti-corrosion packaging for long sea voyages
Custom: Tailored packaging sizes and labels based on client specifications
6. FAQs
Q1: What makes C1100 copper foil suitable for transformer applications?
A: C1100 offers 99.9%+ purity and 98–100% IACS conductivity, delivering low electrical resistance and minimal energy loss. Its ductility allows tight, uniform winding, while our burr-free edge technology prevents electrical arcing-critical for transformer safety and long service life.
Q2: Why are smooth, burr-free edges essential for power equipment?
A: Burrs or rough edges can cause electrical field concentration, leading to partial discharge, arcing, and premature insulation failure in high-voltage environments. Our high-speed trimming technology eliminates this risk, ensuring stable, safe operation in transformers, reactors, and cables.
Q3: What are the key benefits of using your copper foil in power transformers?
A:
Low energy loss: High conductivity reduces operational costs.
Consistent quality: Precision dimensions ensure uniform winding and performance.
Long-term reliability: Corrosion resistance and thermal stability prevent degradation in harsh environments.
Safety compliance: Meets international standards for electrical equipment.
Q4: What size ranges do you offer for transformer-specific applications?
A: Standard thickness: 0.1–3mm; standard width: 15–1220mm. We also provide custom slitting and cut-to-length services to match your transformer winding and shielding requirements.
Q5: Can you provide custom processing for specialized power applications?
A: Yes. We offer precision slitting, surface treatments (anti-tarnish, passivation), and custom packaging to meet the unique requirements of transformers, reactors, and power cable manufacturers.
Q6: How do you prevent oxidation and damage during shipping for export orders?
A: We use multi-layer protection, including anti-rust paper, VCI film, and fumigated wooden pallets/crates, to protect copper foil from moisture, oxidation, and mechanical damage during long sea voyages.
Q7: What is your lead time for bulk transformer-grade copper foil orders?
A: Standard bulk orders take 2–3 weeks. Custom orders with special processing or sizes may require additional time. Contact us with your specifications for a detailed quote and delivery schedule.
Ready to Source Transformer-Grade Copper Foil?
Contact Weshare Imp. & Exp. Co., Ltd. today to discuss your power and transformer application requirements, request a quote, or learn more about our custom solutions.