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China Transformer-Specific Enameled Flat Copper/Aluminum Wire Suppliers | High-Quality Factory Products
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 | Note |
|---|---|---|
| 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 (≤0.017241 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.
✓ ISO9001:2015
✓ SGS
✓ UL
✓ CE
Frequently Asked Questions
Q What is the difference between the six types of enameled flat wire?
The six types differ primarily in their insulating paint material and maximum thermal rating. QQ/QQN is rated at 120℃ and offers excellent transformer oil resistance. QZ handles up to 130℃ with high mechanical strength, QZG up to 155℃ with good shock resistance, QZY up to 180℃ for high-power applications, Q(ZY/XY) up to 200℃ for demanding environments, and QXY up to 220℃ with superior chemical resistance for special transformers.
Q What conductor materials are available for this enameled flat wire?
This enameled flat wire is available in two conductor materials: high-conductivity oxygen-free copper (compliant with GB5584.2-2009) and electrical aluminum rod (compliant with GB5584.3-2009). Copper offers lower resistivity and is ideal for high-efficiency transformers, while aluminum provides a lightweight and cost-effective solution for medium and low-power transformers.
Q Can the enameled flat wire be customized to specific transformer requirements?
Yes. Hengte Electric accepts custom specifications to match different transformer models and power ratings. Conductor thickness can range from 0.80 to 5.60 mm, conductor width from 2.00 to 16.00 mm, and insulation thickness in either thin-film or thick-film options. Please contact us with your exact transformer design requirements for a tailored solution.
Q Which international certifications does this enameled flat wire hold?
The enameled flat wire from Hengte Electric has passed SGS, UL, and CE testing and is manufactured under an ISO9001:2015 certified quality management system. These certifications ensure compliance with international transformer industry standards and guarantee consistent product quality.
Q What applications is this enameled flat wire suitable for?
This enameled flat wire is specifically engineered for transformer windings and is widely used in power transformers, distribution transformers, and special-purpose transformers. Depending on the insulation type selected, it is suitable for applications ranging from standard oil-immersed transformers to high-power and high-temperature industrial transformer environments.
Q How does the self-adhesive layer on QQ/QQN wire benefit transformer production?
The self-adhesive layer (0.03–0.06 mm thick) on QQ/QQN enameled flat wire enhances winding cohesion during transformer assembly. When heat or solvent is applied, the adhesive layer bonds adjacent wire turns together, improving the structural integrity of the winding, reducing vibration, and increasing resistance to mechanical shock in service.