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High-Quality Enameled Flat Copper/Aluminum Wire for Transformers | China Suppliers & Factory
Product Information
Engineered specifically for transformer windings, this enameled flat wire is crafted from high-conductivity oxygen-free copper or electrical aluminum rod, processed through precision drawing and extrusion to meet the strict requirements of transformer operation. It is widely used in power transformers, distribution transformers, and special transformers, providing excellent insulation, conductivity, and thermal stability. Based on the insulating paint's performance, it is divided into six specialized categories:
- ⚡ QQ/QQN: 120℃ Polyvinyl Acetal / Self-adhesive Polyvinyl Acetal Enameled Flat Wire — excellent transformer oil resistance
- ⚡ QZ: 130℃ Polyester Enameled Flat Wire — high mechanical strength for transformer windings
- ⚡ QZG: 155℃ Modified Polyester Enameled Flat Wire — good shock resistance for stable transformer operation
- ⚡ QZY: 180℃ Polyester Imide Enameled Flat Wire — high heat resistance for high-power transformers
- ⚡ Q(ZY/XY): 200℃ Polyester Imide / Polyamide-Imide Composite Enameled Flat Wire — comprehensive performance for harsh transformer environments
- ⚡ QXY: 220℃ Polyamide Imide Enameled Flat Wire — superior chemical resistance for special transformers
Transformer-Adapted Specifications
📐
Conductor Thickness (a)
0.80 – 5.60 mm — matches common transformer winding designs
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Conductor Width (b)
2.00 – 16.00 mm — optimized for winding density
🛡️
Insulation Thickness
Thin film: 0.06 – 0.11 mm
Thick film: 0.12 – 0.17 mm
Balances insulation and space efficiency
Thick film: 0.12 – 0.17 mm
Balances insulation and space efficiency
🔗
Self-adhesive Layer (QQ/QQN)
0.03 – 0.06 mm — enhances winding adhesion in transformers
Detail Shot
Performance for Transformers
- 🔬 Copper conductors comply with GB5584.2-2009, with low resistivity (≤0.017241 Ω·mm²/m at 20℃) to reduce transformer energy loss.
- ⚖️ Aluminum conductors meet GB5584.3-2009, offering lightweight solutions for medium and low-power transformers.
- ✅ All insulation types pass transformer-specific tests, including resistance to transformer oil (QQ/QQN) and heat shock (QZY), ensuring long-term reliability.
- 🏆 Hengte Electric is a professional supplier of transformer components, holding ISO9001:2015 certification. Products have passed SGS, UL, and CE tests, meeting international transformer industry standards. We accept custom specifications to match different transformer models and power ratings.
❓ Frequently Asked Questions
Q
What types of transformers are these enameled flat wires suitable for?
These enameled flat wires are engineered for power transformers, distribution transformers, and special transformers. The six insulation categories cover a wide range of operating temperatures (120℃–220℃), making them suitable for both standard and high-demand transformer applications.
Q
What is the difference between copper and aluminum conductor options?
Copper conductors (GB5584.2-2009) offer lower resistivity (≤0.017241 Ω·mm²/m at 20℃), making them ideal for high-efficiency and high-power transformers. Aluminum conductors (GB5584.3-2009) are lighter and more cost-effective, best suited for medium and low-power transformer applications.
Q
Which insulation grade should I choose for a high-temperature transformer environment?
For high-temperature environments, QZY (180℃ Polyester Imide) is recommended for high-power transformers, while Q(ZY/XY) (200℃ composite) or QXY (220℃ Polyamide Imide) are ideal for extremely harsh or specialized transformer conditions requiring superior heat and chemical resistance.
Q
Can you provide custom specifications for specific transformer models?
Yes. Hengte Electric accepts custom specifications to match different transformer models and power ratings. Conductor thickness (0.80–5.60 mm), width (2.00–16.00 mm), insulation film thickness, and self-adhesive layer thickness can all be tailored to your specific requirements.
Q
What international certifications do these enameled flat wires hold?
All products are manufactured under ISO9001:2015 quality management standards and have passed SGS, UL, and CE testing, ensuring compliance with international transformer industry standards for global markets.
Q
What is the purpose of the self-adhesive layer in QQ/QQN enameled flat wire?
The self-adhesive layer (0.03–0.06 mm) in QQ/QQN enameled flat wire is designed to enhance winding adhesion within transformers, ensuring the coils remain firmly bonded during operation. This type also features excellent resistance to transformer oil, making it particularly reliable for oil-immersed transformer applications.