Heavy Gauge Copper Winding Dry Type Transformer Low Loss High Reliability
Why Heavy Gauge Copper Windings Matter for Your Business
Copper has about 40% lower electrical resistivity than aluminum. Our transformers exhibit significantly lower load losses, leading to direct energy savings and a lower Total Cost of Ownership (TCO) for your end-users.
Copper is mechanically stronger and has a higher melting point. Our windings can withstand the immense electrodynamic forces during short-circuit events, minimizing the risk of deformation and failure, ensuring higher system reliability.
Better conductivity means less heat generation. Combined with our advanced F/H-class Vacuum Pressure Impregnation (VPI) insulation system, this allows for a cooler operating temperature, which slows down insulation aging and extends transformer life by years.
For the same current capacity, a copper conductor has a smaller cross-section than aluminum. This enables a more compact coil design, saving valuable space in your switchgear or facility.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | Up to 5000kVA (Customizable) |
| High Voltage | 11kV, 22kV, 33kV, 35kV |
| Low Voltage | 400V, 480V, 690V |
| Winding Material | 100% Electrolytic Copper |
| Insulation System | F-Class (155°C) / H-Class (180°C), Vacuum Pressure Impregnated (VPI) |
| Protection Level | IP00, IP20, IP23 (Indoor); IP54 (Outdoor Enclosure Available) |
| Standards | IEC 60076-11, EN 61558, GB 1094.11, CE |
Ideal Applications
Our copper winding transformers are the preferred choice for critical applications where reliability and efficiency cannot be compromised:
- Data Centers & IT Hubs: Ensure uninterrupted, high-quality power for sensitive servers.
- Healthcare Facilities (Hospitals, Labs): Guarantee power quality for life-saving equipment.
- Industrial Plants & Manufacturing: Withstand dusty, humid, and corrosive environments. Perfect for CNC, welding, and heavy machinery.
- Commercial Complexes & High-Rise Buildings: Provide safe and efficient power distribution.
- Renewable Energy Systems (Solar/Wind): Handle variable loads with high efficiency.
How We Ensure Quality in Every Copper Winding
Automated Winding & Precision Control
Our CNC winding machines ensure consistent tension and precise layering of copper conductors, eliminating human error and guaranteeing mechanical stability.
Vacuum Pressure Impregnation (VPI)
The entire copper winding is vacuum-dried and impregnated with high-grade insulating resin under pressure, creating a robust, moisture-proof, and void-free insulation system.
Rigorous Final Testing
Every unit undergoes 100% testing, including Turns Ratio, Winding Resistance, Induced Voltage Withstand, and Partial Discharge (PD) measurement to ensure PD level is below 10pC.
Company production enviroment
Our factory & quipment
Our transformer production combines automation equipment with the exquisite craftsmanship of experienced technicians, from winding, assembly to insulation treatment, each process is strictly controlled by an experienced technical team.The workshop environment has constant temperature and humidity, in line with ISO 9001 international quality management standards, to ensure that the product performance is stable, safe and durable. Transparent and visualized production processes. We are committed to using technology to improve efficiency and provide customers with zero-defect industrial power solutions.
Products Export
Foreign exhibition
International Exhibition Validates Strength
As a reputable enterprise in China's power equipment manufacturing sector, Kechang Electric showcased its core product portfolio and technical solutions at the 2024 Tashkent International Energy Exhibition in Uzbekistan, reinforcing our presence in Central Asian markets.
Exhibition Highlights
• Professional Recognition: Engaged in technical exchanges with over 80 professionals from Central Asian power utilities and industrial clients
• Scenario Verification: Demonstrated product adaptability in extreme temperature conditions through live equipment presentations
• Service Commitment: Established technical communication channels with local partners during the event
Client Testimonial
"Kechang Electric's climate-specific protection designs and service framework impressed us during in-depth discussions at the exhibition."
- Procurement Manager, Industrial Zone, Uzbekistan
Our Advantages
✓ Global Expertise: Products deployed across 6 Central Asian countries, serving 50+ projects
✓ Rapid Support: Bilingual technical assistance (English/Russian) with solutions delivered within 48 hours
✓ Quality Assurance: All equipment undergoes rigorous cyclic testing at -30℃ to 50℃
International Clients Inspecting Our Facilities
Uzbekistan customers visit the factory of transformer
Nepalese Clients Participate in Power Control Equipment Testing
Pakistani Clients Tour Our Product Showroom
How we started
2006-2010
2006-2010 Foundation Period | Embracing International Standards
Strategic Positioning: Strategic manufacturing partner for Fortune 500 power industry giants
Key Milestones:
✔️ Delivered 1,200+ sets of complete power equipment as OEM supplier for listed companies
✔️ Established 217 process standards aligned with client specifications
✔️ Achieved ISO 9001 certification with 0.12% defect rate (industry avg: 0.35%)
2010-2012
2010-2012 Transformation Era | Pioneering Independent Branding
Strategic Shift: Transition from OEM manufacturing to branded operations
Key Achievements:
✔️ Obtained National Industrial Product License
✔️ First-year branded product sales: ￥38M with 43% repeat order rate
✔️ Industry-first lifecycle tracking system enabling 30-year data traceability
Technical Milestones:
► S11-M oil-immersed transformer certified Class 1 energy efficiency (GB 24790)
► Sheet metal precision improved from ±2mm to ±0.8mm
2012-2018
2012-2018 Expansion Era | Building Industry Ecosystems
Strategic Focus:
Capacity Expansion × Technical Depth × Global Integration
|
Dimension |
Achievements |
|
Capacity |
Built 43,000 sq.m digital factory (170% capacity increase) |
|
Technology |
7 invention patents + 12 utility model patents (2 national standards drafted) |
|
Partnership |
Key supplier to ABB/Schneider APAC (service network: 29 provinces) |
2018-Present
2018-Present | Innovating an Era: Interpreting China's Smart Manufacturing
Industry 4.0 Smart Factory:Achieved 92% automation in key processes.
Hi-B Steel Adoption: Fully integrated high-permeability grain-oriented silicon steel.
Global Certification & Reach: KEMA-certified products entering 18 markets across the EU, Southeast Asia, and beyond.
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