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China Suppliers Factory Transformer Enameled Flat Copper/Aluminum Wire for High-Performance Windings
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
Matches common transformer winding designs
Conductor Width (b)
2.00 – 16.00 mm
Optimized for winding density
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
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
What types of transformers is this enameled flat wire suitable for?
This enameled flat wire is designed for use in power transformers, distribution transformers, and special transformers. With six insulation grades ranging from 120℃ to 220℃, it covers a wide range of transformer types and power ratings.
What is the difference between the QQ/QQN and QXY types?
QQ/QQN is a 120℃ Polyvinyl Acetal enameled flat wire best known for its excellent transformer oil resistance and self-adhesive properties. QXY is a 220℃ Polyamide Imide type offering superior chemical resistance and thermal endurance for demanding special transformer environments.
What conductor materials are available for the enameled flat wire?
The wire is available in two conductor materials: high-conductivity oxygen-free copper (complying with GB5584.2-2009) and electrical-grade aluminum (complying with GB5584.3-2009), providing options for both high-performance and lightweight transformer winding applications.
Can the specifications be customized to match specific transformer designs?
Yes. Conductor thickness ranges from 0.80 to 5.60 mm and width from 2.00 to 16.00 mm, with thin or thick film insulation options. Custom specifications are accepted to match different transformer models, winding configurations, and power ratings.
What certifications does this enameled flat wire hold?
Hengte Electric holds ISO9001:2015 quality management certification. The enameled flat wire products have passed SGS, UL, and CE tests, meeting international transformer industry standards and ensuring consistent product quality.
What insulation film thickness options are available and how do they affect transformer performance?
Two insulation thickness options are available: thin film (0.06–0.11 mm) for maximizing winding space efficiency, and thick film (0.12–0.17 mm) for enhanced dielectric protection. The choice depends on the transformer's voltage rating and available winding space. For QQ/QQN types, an additional self-adhesive layer of 0.03–0.06 mm improves winding adhesion and coil stability.