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High-Temperature Resistant Enameled Flat Copper/Aluminum Wire - China Suppliers and Factory Products

Introducing our premium enameled flat wire, meticulously crafted from high-purity oxygen-free copper or top-quality electrical aluminum rod. Manufactured in our state-of-the-art factory in China, this wire is processed through precision drawing and extrusion using customized molds. It is specifically designed for windings in high-temperature electrical devices, including industrial transformers, high-voltage reactors, and power converters, As a leading supplier, we offer a variety of insulating paint types categorized into 6 thermal grades, ranging from 120℃ to 220℃, ensuring reliable performance even in extreme heat conditions. Trust our factory for high-quality solutions that meet your electrical needs

    Product Information

    This enameled flat wire takes high-quality oxygen-free copper or electrical aluminum rod as raw materials, which are strictly processed through drawing and extrusion by specification-specific molds to ensure uniform conductor structure. Its primary application lies in the windings of electrical equipment that demand stable operation at elevated temperatures, including heavy-duty transformers, high-frequency reactors, and industrial inverters. Based on the insulation paint formulation, it is categorized into six core types to match different thermal requirements:

    • 120℃ Polyvinyl Acetal / Self-adhesive Polyvinyl Acetal Enameled Flat Wire (QQ/QQN)
    • 130℃ Polyester Enameled Flat Wire (QZ)
    • 155℃ Modified Polyester Enameled Flat Wire (QZG)
    • 180℃ Polyester Imide Enameled Flat Wire (QZY)
    • 200℃ Polyester Imide / Polyamide-Imide Composite Enameled Flat Wire (Q(ZY/XY))
    • 220℃ Polyamide Imide Enameled Flat Wire (QXY)
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    Production Scope
    Conductor Thickness — a 0.80 – 5.60 mm
    Conductor Width — b 2.00 – 16.00 mm
    Maximum Conductor Width Ratio 20 : 1
    Conductor Material Performance
    Soft Copper Flat Wire — Standard GB5584.2-2009 | Resistivity ≤ 0.017241 Ω·mm²/m at 20℃ | Grades: C1 / C2 / C3
    Soft Aluminum Flat Wire — Standard GB5584.3-2009 | Resistivity ≤ 0.02801 Ω·mm²/m at 20℃ | Efficient electrical conductivity
    Detail Shot
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    Insulation & Thermal Performance

    Insulation thickness options include thin film (0.06–0.11 mm) and thick film (0.12–0.17 mm), while self-adhesive layers range from 0.03–0.06 mm, all monitored by professional dielectric loss meters. Key thermal performance highlights:

    • QZY (180℃) — Exceptional heat resistance and heat shock resistance, suitable for high-temperature industrial equipment.
    • Q(ZY/XY) (200℃) — Combines refrigerant and radiation resistance, ideal for harsh operating environments.
    • QXY (220℃) — Superior chemical solvent resistance, maintaining stability in extreme conditions.

    All products meet GB/T 7095 series and IEC 60317 standards, with breakdown voltage values reaching 1000V (Grade 1) and 2000V (Grade 2) at room temperature.

    Customization is available based on customer-provided technical specifications.

    ISO 9001:2015 SGS Certified UL Listed CE Certified
    Frequently Asked Questions
    Q What conductor materials are available for the enameled flat wire?
    The enameled flat wire is manufactured using either high-quality oxygen-free copper or electrical-grade aluminum rods as base conductor materials. Soft copper flat wire complies with GB5584.2-2009 and is available in three mechanical strength grades (C1, C2, C3), while soft aluminum flat wire complies with GB5584.3-2009, both ensuring excellent electrical conductivity performance.
    Q What temperature classes are available, and how do I choose the right one?
    Six thermal class options are available: 120℃ (QQ/QQN), 130℃ (QZ), 155℃ (QZG), 180℃ (QZY), 200℃ (Q(ZY/XY)), and 220℃ (QXY). Selection should be based on the maximum operating temperature of your application. For standard transformers, 130℃–155℃ grades are common; for high-temperature industrial or harsh-environment equipment, 180℃–220℃ grades are recommended.
    Q What are the available conductor size ranges for the enameled flat wire?
    The conductor thickness (a) ranges from 0.80 mm to 5.60 mm, and the conductor width (b) ranges from 2.00 mm to 16.00 mm, with a maximum conductor width-to-thickness ratio of 20:1. Custom sizes can be produced based on customer-provided technical drawings or specifications.
    Q What international quality standards and certifications does the product comply with?
    All enameled flat wire products comply with GB/T 7095 series and IEC 60317 international standards. As an ISO 9001:2015 certified supplier, Hengte Electric's products have also passed SGS, UL, and CE testing and certification, ensuring full quality compliance for both domestic and international markets.
    Q What insulation thickness options are available, and what are the breakdown voltage ratings?
    Insulation thickness is available in thin film (0.06–0.11 mm) and thick film (0.12–0.17 mm), with self-adhesive layer options ranging from 0.03–0.06 mm. All products are monitored using professional dielectric loss meters. Breakdown voltage ratings reach 1000V for Grade 1 and 2000V for Grade 2 at room temperature, ensuring reliable dielectric performance in demanding applications.
    Q Is customization available for the enameled flat wire products?
    Yes. Customization is fully supported based on customer-provided technical specifications, including conductor dimensions, insulation type, thermal class, and film thickness. Customers are welcome to submit their technical requirements, and the production team will develop products accordingly to meet specific application demands.

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