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China Suppliers Factory Customized Enameled Flat Copper/Aluminum Wire for Transformer Windings - High Conductivity
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
| Parameter | Range / Value | Notes |
|---|---|---|
| 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 | Balances insulation and space efficiency |
| Insulation Thickness — Thick Film | 0.12 – 0.17 mm | |
| 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.
🏆 Certified & Trusted Supplier
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 is this enameled flat wire suitable for?
This enameled flat wire is suitable for a wide range of transformers, including power transformers, distribution transformers, and special-purpose transformers. The six available insulation grades (120℃–220℃) allow customers to select the right product based on operating temperature and application requirements.
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 a practical choice for medium and low-power transformer applications.
Q
Can the wire specifications be customized to match our transformer design?
Yes. Hengte Electric accepts custom specifications. Conductor thickness (0.80–5.60mm), conductor width (2.00–16.00mm), insulation film thickness, and self-adhesive layer thickness can all be tailored to match specific transformer models and power ratings.
Q
Which insulation grade should I choose for a high-temperature transformer environment?
For high-temperature environments, we recommend QZY (180℃ Polyester Imide), Q(ZY/XY) (200℃ composite), or QXY (220℃ Polyamide Imide) grades. QXY provides the highest thermal and chemical resistance, making it ideal for special transformers operating under extreme conditions.
Q
What international certifications does the product hold?
All products are manufactured under an ISO9001:2015 quality management system and have passed SGS, UL, and CE testing, ensuring compliance with international transformer industry standards and export requirements.
Q
What is the role of the self-adhesive layer in QQ/QQN enameled flat wire?
The self-adhesive layer (0.03–0.06mm) in QQ/QQN wire activates under heat or solvent, bonding adjacent winding turns together. This enhances structural rigidity of the coil, reduces vibration and noise in transformer operation, and improves resistance to transformer oil environments.