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Help CenterClass 220 Hairpin Winding Rectangular Aluminum/Conductor For Rail Traction Motors Wire Enameled Aluminum
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Engineered for demanding railway applications, our Class 220 Hairpin Winding Rectangular Aluminum Conductor delivers exceptional thermal stability and electrical performance in traction motor systems. This enameled aluminum wire combines lightweight properties with high-temperature endurance to optimize power density and efficiency in modern rail transportation.
Manufactured with precision at our ISO-certified facility, this rectangular conductor enables compact hairpin winding designs that significantly improve slot fill factor compared to traditional round wires. The Class 220 insulation system withstands operational temperatures up to 220°C while maintaining dielectric strength in challenging rail environments.
Core Technical Advantages:
- Thermal endurance - Continuous operation at 220°C with minimal degradation
- Space optimization - Rectangular profile increases copper fill factor by 15-20%
- Reduced eddy currents - Hairpin design minimizes high-frequency losses
- Weight reduction - Aluminum construction offers 60% weight savings vs copper
- Corrosion resistance - Specialized enamel coating protects against moisture and chemicals
Technical Specifications:
| Parameter | Value | Testing Standard |
|---|---|---|
| Insulation Thickness | 0.05 - 0.25 mm | IEC 60851 |
| Dielectric Strength | Min. 8 kV | IEC 60243 |
| Thermal Shock Resistance | 10 cycles at 300°C | IEC 60172 |
| Conductor Resistivity | ≤ 28.264 nΩ·m | IEC 60468 |
Note: Standard dimensions range from 2mm x 4mm to 8mm x 16mm rectangular profiles. Custom geometries can be developed for specific motor slot configurations.
Manufacturing Excellence:
Produced in our 20,000+ sqm facility with automated winding and insulation systems, each batch undergoes:
- Dimensional tolerance control within ±0.02mm
- Online spark testing for pinhole detection
- Adhesion testing using scrape resistance methods
- Thermal aging simulations for lifespan validation
Performance Benefits for Rail Operators:
- 15-25% power density increase in traction motors
- Reduced maintenance intervals due to thermal stability
- Compatibility with automated hairpin winding machinery
- Vibration resistance exceeding 30G acceleration
With over 50 years of electromagnetic material expertise, we support rail manufacturers worldwide with technically advanced winding solutions. Our integrated production from raw material to finished conductor ensures consistent quality for mission-critical traction systems.
Contact our engineering team today to discuss your specific hairpin winding requirements and request material samples for prototype testing. Global shipping available from multiple Chinese ports with flexible quantity options.
Frequently Asked Questions:
Q: What temperature limits apply to Class 220 insulation?
A: Class 220 designation indicates continuous operational capability at 220°C with short-term tolerance up to 240°C, making it suitable for traction motors under peak loads.
Q: Can this conductor be used with existing hairpin winding equipment?
A: Yes, the rectangular profile is compatible with standard automated hairpin insertion machines. We provide technical datasheets with bending radius specifications.
Q: How does aluminum compare to copper in winding performance?
A: While aluminum has higher resistivity, its weight advantage (60% lighter) and optimized rectangular cross-section provide competitive overall efficiency in high-power applications.
Q: What quality documentation accompanies shipments?
A: Each order includes material certification, dimensional reports, and electrical test records per ISO 9001 requirements.
Q: Are custom insulation colors available?
A: Standard enamel is beige, but custom coloration for phase identification can be arranged with sufficient order quantities.
Q: What packaging methods are used?
A: We use moisture-resistant spools with protective corner guards, optimized for automated feeding systems. Special packaging solutions available upon request.
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