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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
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.
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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 enameled flat wire are available for transformer windings?
We offer six specialized categories: QQ/QQN (120℃), QZ (130℃), QZG (155℃), QZY (180℃), Q(ZY/XY) (200℃), and QXY (220℃), each designed for different thermal and environmental requirements in transformer applications.
Q What conductor materials are available, and how do they differ?
Our enameled flat wire is available in both high-conductivity oxygen-free copper and electrical-grade aluminum. Copper offers lower resistivity (≤0.017241 Ω·mm²/m at 20℃) for minimal energy loss, while aluminum provides a lightweight alternative suitable for medium and low-power transformers.
Q What are the available conductor dimensions and insulation thickness options?
Conductor thickness (a) ranges from 0.80 to 5.60 mm, and width (b) from 2.00 to 16.00 mm. Insulation thickness options include thin film (0.06–0.11 mm) and thick film (0.12–0.17 mm) to balance insulation performance with space efficiency in transformer designs.
Q Which certifications and quality standards do your products comply with?
Hengte Electric holds ISO9001:2015 certification, and our enameled flat wire products have passed SGS, UL, and CE testing, fully complying with international transformer industry standards including GB5584.2-2009 (copper) and GB5584.3-2009 (aluminum).
Q Can you provide custom specifications for specific transformer models?
Yes, we accept custom specifications tailored to different transformer models and power ratings. Please contact our technical team with your requirements, including conductor dimensions, insulation type, and thermal class, for a customized solution.
Q Which enameled flat wire grade is best suited for high-temperature transformer environments?
For high-temperature applications, we recommend QZY (180℃ Polyester Imide), Q(ZY/XY) (200℃ Composite), or QXY (220℃ Polyamide Imide) grades. These provide superior heat resistance and have passed heat shock tests, making them ideal for high-power and special transformer environments.