0102030405
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 / QQN120℃ Polyvinyl Acetal / Self-adhesive Polyvinyl Acetal Enameled Flat Wire — excellent transformer oil resistance
- QZ130℃ Polyester Enameled Flat Wire — high mechanical strength for transformer windings
- QZG155℃ Modified Polyester Enameled Flat Wire — good shock resistance for stable transformer operation
- QZY180℃ 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
- QXY220℃ 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 suitable for a wide range of transformers, including power transformers, distribution transformers, and special-purpose transformers. It is designed to meet the demanding winding requirements of each transformer type with multiple insulation grades available.
What is the difference between the six insulation categories (QQ, QZ, QZG, QZY, Q(ZY/XY), QXY)?
Each category uses a different insulating paint, offering varying temperature ratings (120℃ to 220℃), mechanical properties, and chemical resistances. For example, QQ/QQN excels in transformer oil resistance, while QXY provides superior chemical resistance for special transformer environments. The right choice depends on the operating temperature and environmental conditions of your transformer.
What conductor materials are available, and how do I choose between copper and aluminum?
Both high-conductivity oxygen-free copper and electrical aluminum rod are available. Copper conductors (GB5584.2-2009) offer lower resistivity (≤0.017241 Ω·mm²/m at 20℃), making them ideal for high-efficiency applications. Aluminum conductors (GB5584.3-2009) are lighter and more cost-effective, suited for medium and low-power transformers where weight reduction is a priority.
Can I request custom dimensions for the enameled flat wire?
Yes, custom specifications are accepted. The conductor thickness ranges from 0.80 mm to 5.60 mm, and the width from 2.00 mm to 16.00 mm. Insulation thickness can be selected as thin film (0.06–0.11 mm) or thick film (0.12–0.17 mm) to match your specific transformer model and power rating requirements.
What certifications does this enameled flat wire hold?
Hengte Electric holds ISO9001:2015 certification. The enameled flat wire products have passed SGS, UL, and CE testing, ensuring compliance with international transformer industry standards for quality, safety, and performance.
What is the purpose of the self-adhesive layer in QQ/QQN enameled flat wire?
The self-adhesive layer (0.03–0.06 mm thick) in QQ/QQN wire bonds the winding turns together when activated by heat or solvent during the transformer manufacturing process. This improves the structural integrity of the coil, reduces vibration, and enhances overall transformer stability during operation.