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Help CenterClass F Enamelled Winding Wire for Transformers 130°C Thermal Rating
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As a leading manufacturer with over 50 years of expertise in electrical materials, Shandong Huilong Electrical Material Co., Ltd. delivers premium Class F Enamelled Winding Wire engineered specifically for transformer applications. Our wire's 130°C thermal rating ensures reliable performance in demanding electrical environments, reducing energy losses while extending equipment lifespan.
Technical Advantages:
- Enhanced thermal endurance maintains insulation integrity at elevated temperatures
- Superior dielectric strength prevents electrical breakdown under voltage stress
- Optimized flexibility for precise winding configurations in tight spaces
- Excellent chemical resistance against oils, solvents and moisture
- Reduced skin effect for improved high-frequency performance
Key Specifications:
| Parameter | Standard Value | Testing Method |
| Dielectric Withstand | Min 7000 VAC | IEC 60851 |
| Elongation | ≥ 30% | ASTM B193 |
| Thermal Shock | No cracks at 175°C | IEC 60172 |
| Cut-Through | ≥ 220°C | IEC 60851 |
Transformers utilizing our winding wire demonstrate up to 15% better thermal management compared to conventional Class B wires, directly translating to reduced cooling requirements and lower operational costs. The uniform enamel coating ensures consistent electrical characteristics across the entire winding length.
Backed by our $100M+ annual export volume and certifications including ISO9001 and TS16949, we guarantee material traceability and consistent quality. With direct shipment from Qingdao/Shanghai/Ningbo ports and established supply chains across 6 continents, we deliver technical solutions to transformer manufacturers worldwide.
Frequently Asked Questions:
Q: What conductor materials are available?
A: We primarily use high-purity copper conductors, with optional aluminum conductors available upon request.
Q: Can you provide custom wire diameters?
A: Yes, we produce diameters from 0.10mm to 5.0mm with tolerance control within ±0.005mm.
Q: What packaging options do you offer?
A: Standard packaging includes spools (5-50kg) or reels (100-500kg), with custom packaging solutions available.
Q: Are sample orders accepted?
A: Yes, we provide sample spools for quality verification with standard lead times of 7-10 days.
Q: How does Class F insulation benefit transformers?
A: It allows 25°C higher operating temperatures than Class B, enabling more compact designs and better overload capacity.
Q: What quality documentation do you provide?
A: All shipments include material certification with test reports for key parameters including dielectric strength and thermal endurance.
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