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High-Quality Transformer Enameled Flat Copper/Aluminum Wire from China Suppliers & Factory - Insulation Up to 220℃
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 |
| 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 |
| 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.
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Frequently Asked Questions
Q
What types of transformers is this enameled flat wire suitable for?
This enameled flat wire is suitable for a wide range of transformer applications, including power transformers, distribution transformers, and special-purpose transformers. Its six insulation grades cover operating temperatures from 120℃ to 220℃, accommodating both standard and demanding transformer environments.
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, high-power transformers. Aluminum conductors (GB5584.3-2009) are lighter and more cost-effective, making them well-suited for medium and low-power transformer applications.
Q
Which insulation grade should I choose for high-temperature transformer applications?
For high-temperature applications, QZY (180℃ Polyester Imide) is recommended for high-power transformers, while Q(ZY/XY) (200℃ composite) and QXY (220℃ Polyamide Imide) are ideal for extreme heat and harsh chemical environments in special transformers.
Q
What certifications does this enameled flat wire hold?
The product is manufactured by Hengte Electric under ISO9001:2015 quality management standards. It has also passed SGS, UL, and CE testing, ensuring compliance with major international transformer industry requirements.
Q
Can custom specifications be provided for specific transformer models?
Yes. Custom specifications are accepted to match different transformer models and power ratings. Conductor thickness (0.80–5.60 mm), width (2.00–16.00 mm), insulation thickness (thin or thick film), and self-adhesive layer options can all be tailored to your specific requirements.
Q
What is the function 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 enhances winding adhesion within transformer coils. When heated during operation or post-winding processing, the layer bonds adjacent turns together, improving the mechanical stability and structural integrity of the transformer winding.