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High-Quality Transformer-Specific Enameled Flat Copper/Aluminum Wire from China Suppliers and 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 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. With six insulation categories covering temperature ratings from 120℃ to 220℃, it can be matched to different application environments and power ratings.
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 and high-power transformers. Aluminum conductors (GB5584.3-2009) are lighter in weight and more cost-effective, making them a practical choice for medium and low-power transformer applications.
Q
What 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) enameled flat wire. These grades offer superior heat resistance and long-term thermal stability, making them ideal for high-power or harsh operating conditions.
Q
Can custom specifications be ordered to fit specific transformer models?
Yes. Hengte Electric accepts custom orders for conductor thickness (0.80–5.60mm), conductor width (2.00–16.00mm), insulation thickness (thin or thick film), and self-adhesive layer configurations. Please provide your transformer model and winding design requirements, and our team will recommend the most suitable specifications.
Q
What certifications does the enameled flat wire hold?
Hengte Electric holds ISO9001:2015 quality management certification, and the enameled flat wire products have passed SGS, UL, and CE testing, fully meeting international transformer industry standards for safety, reliability, and performance.
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 enameled flat wire allows winding turns to bond together when heated, improving the structural integrity and mechanical stability of transformer coils. This reduces vibration and deformation during operation, which is especially beneficial in oil-immersed transformer applications.