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High-Conductivity 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
| 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 | 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 (≤0.017241Ω.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.
ISO9001:2015
SGS Certified
UL Listed
CE Compliant
GB5584.2-2009
GB5584.3-2009
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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 power transformers, distribution transformers, and special transformers. With six insulation grades ranging from 120℃ to 220℃, it can meet the requirements of various transformer types and power ratings.
Q What is the difference between copper and aluminum conductor options?
Copper conductors (GB5584.2-2009) offer lower resistivity (≤0.017241Ω.mm²/m at 20℃), making them ideal for high-efficiency, high-power transformers. Aluminum conductors (GB5584.3-2009) are lighter and more cost-effective, providing practical solutions for medium and low-power transformer applications.
Q How do I choose the right insulation grade for my transformer?
Select the insulation grade based on your transformer's operating temperature and environment. For standard applications, QZ (130℃) or QZG (155℃) is sufficient. For high-power or high-temperature environments, QZY (180℃) or Q(ZY/XY) (200℃) is recommended. For special chemical resistance requirements, QXY (220℃) is the optimal choice.
Q What conductor dimensions are available for custom transformer designs?
The conductor thickness (a) ranges from 0.80mm to 5.60mm and the width (b) from 2.00mm to 16.00mm. Insulation thickness is available in thin film (0.06–0.11mm) and thick film (0.12–0.17mm) options. Custom specifications are accepted to match specific transformer models and winding requirements.
Q What certifications does this enameled flat wire hold?
The product is manufactured under ISO9001:2015 quality management standards and has passed SGS, UL, and CE certification tests. It also complies with Chinese national standards GB5584.2-2009 (copper) and GB5584.3-2009 (aluminum), meeting international transformer industry requirements.
Q What is the advantage 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 during transformer winding, bonding adjacent turns together to form a rigid, self-supporting coil. This enhances mechanical stability, improves vibration resistance, and simplifies the winding process for transformer manufacturing.