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High-Quality Enameled Copper and Aluminum Flat Wire from China Suppliers and Factory - ISO Certified Products

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Enameled Flat Wire, produced by our advanced factory in China, is crafted from high-quality oxygen-free copper or electrical aluminum rods. These materials are carefully drawn or extruded to meet precise specifications. Our enameled flat wires are primarily utilized in the windings of electrical equipment, including transformers and reactors, ensuring optimal performance and reliability.

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We offer a diverse range of enameled flat wires categorized based on their insulation coatings:

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  • 120 polyvinyl acetal / self-adhesive polyvinyl acetal enameled copper (aluminum) flat wires – QQ/QQN
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  • 130 polyester enameled flat wires – QZ
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  • 155 modified polyester enameled flat wires – QZG
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  • 180 polyester imide enameled copper (aluminum) flat wires – QZY
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  • 200 polyester imide / polyamide-imide composite enameled copper (aluminum) flat wires – Q(ZY/XY)
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  • 220 polyamide imide enameled copper (aluminum) wires – QXY
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As a trusted supplier, Hengte Electric is committed to delivering top-quality enameled flat wires. Our products are ISO9001:2015 certified and have successfully passed SGS and UL testing, with CE certification awarded. If you are looking for reliable enameled flat wire solutions, contact us here for a free quote.

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    Product Information

    Enameled Flat wire is made of oxygen free copper or electrical aluminum rod, which are drawn or extruded by the specification mould. They are mainly used in the windings of electrical equipment such as transformer, reactor and etc. According to the different insulating paint, it can be divided into 6 categories:

    • 120 Polyvinyl acetal / Self adhesive polyvinyl acetal enameled copper (aluminum) flat wires — QQ/QQN
    • 130 Polyester enameled flat wires — QZ
    • 155 Modified polyester enameled flat wires — QZG
    • 180 Polyester imide enameled copper (aluminum) flat wires — QZY
    • 200 Polyester imide / Polyamide-imide composite enameled copper (aluminum) flat wires — Q(ZY/XY)
    • 220 Polyamide imide enameled copper (aluminum) wires — QXY
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    Production Scope
    📐 Conductor Thickness (a) 0.80 – 5.60 mm
    📏 Conductor Width (b) 2.00 – 16.00 mm
    ⚖️ Conductor Width Ratio 20 : 1
    Conductor Material
    🔶 Soft Copper Flat Wire

    Complies with GB5584.2-2009. At 20℃, resistivity ≤ 0.017241 Ω·mm²/m. Suitable for different mechanical strength requirements.

    🔷 Soft Aluminum Flat Wire

    Complies with GB5584.3-2009. At 20℃, resistivity ≤ 0.02801 Ω·mm²/m. Insulation film options: thin film 0.06–0.11 mm or thick film 0.12–0.17 mm.

    The thickness of the hot adhesive enameled flat wire self-adhesive layer is generally from 0.03 to 0.06 mm. Our company monitors the thickness with a dielectric loss meter.

    Detail Shot
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    Product Description
    Enameled Wire Category Thermal Level Performance Standard Experimental Basis

    Polyvinyl acetal / Self adhesive acetel

    QQ/QQN

    120

    Good performance of resistance to transformer oil and scratch. Excellent flexibility & adhesion, and good hydrolysis resistance.

    In addition to the properties of acetal wire, the product adhesive strength can be reinforced by heating.

    GB/T 7095.2-2008

    IEC60317-18:2004

    GB/T 6758.1-2007

    IEC 60851-5

    GB/T 4074

    IEC 60851

    GB/T 4074

    IEC 60851

    Polyester

    QZ

    130 High mechanical strength, good scratch resistance. Good electrical performance.

    GB/T 7095.2-2008

    IEC 60317-11:2005

    GB/T 4074

    IEC 60851

    Modified polyester

    QZ(G)

    155 Good shock resistance. High mechanical strength, good electrical & solvent resistance.

    GB/T 7095.3-2008

    IEC60317-16:1990

    GB/T 4074

    IEC 60851

    Polyester imide

    QZY

    180 High heat resistance, good chemical solvent resistance, and heat shock resistance.

    GB/T 7095.4-2008

    IEC60317-28:1990

    GB/T 4074

    IEC 60851

    Polyester imide / Polyamide-imide composite layer

    Q(ZY/XY)

    200 Good comprehensive properties, such as refrigerant resistance, solvent resistance and radiation resistance.

    GB/T 7095.6-2008

    IEC60317-29:1990

    GB/T 4074

    IEC 60851

    Polyamide imide

    QXY

    220 Good chemical solvent resistance. GB/T 7095.1

    GB/T 4074

    IEC 60851

    Technical Parameter
    C1 Rp0.2 (>100~180) N/mm²  |  C2 Rp0.2 (>180~220) N/mm²  |  C3 Rp0.2 (>220~260) N/mm²
    We can manufacture according to technical specifications provided by customers.
    Model Name Production Specification Scope
    QQB 120 acetal / self adhesive acetal enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    QZB 130 polyester enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    QZ(G)B 155 modified polyester enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    QZYB 180 polyester imide enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    QYB 220 polyamide imide enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    Q(ZY/XY)B 200 polyester imide / polyamide-imide enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    QQBN 120 self adhesive polyvinyl acetal enameled flat wire a: 0.80–5.60 mm   b: 2.00–16.00 mm
    Paint Film Paint film insulation thickness: δ mm
    Grade 1 0.06 ≤ δ ≤ 0.11
    Grade 2 0.12 ≤ δ ≤ 0.17
    Paint Film Min. Breakdown Voltage Value (effective value): V
    Room Temperature High Temperature
    Grade 1 1000 750
    Grade 2 2000 1500
    Frequently Asked Questions
    Q What materials are used to make enameled flat wire?
    Enameled flat wire is made from oxygen-free copper or electrical-grade aluminum rod. The conductor is drawn or extruded through specification moulds to achieve precise flat dimensions suitable for transformer and reactor windings.
    Q What are the available thermal classes for enameled flat wire?
    Enameled flat wire is available in six thermal classes: 120 (Polyvinyl acetal / QQ/QQN), 130 (Polyester / QZ), 155 (Modified polyester / QZG), 180 (Polyester imide / QZY), 200 (Polyester imide / Polyamide-imide composite / Q(ZY/XY)), and 220 (Polyamide imide / QXY).
    Q What is the production dimension range for 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 ratio of 20:1. Custom specifications can also be manufactured according to customer technical requirements.
    Q What is the difference between Grade 1 and Grade 2 paint film insulation?
    Grade 1 paint film has an insulation thickness of 0.06–0.11 mm with a minimum breakdown voltage of 1000 V at room temperature and 750 V at high temperature. Grade 2 paint film has a thickness of 0.12–0.17 mm with a minimum breakdown voltage of 2000 V at room temperature and 1500 V at high temperature, offering stronger dielectric protection.
    Q What standards does the enameled flat wire comply with?
    The enameled flat wire complies with Chinese national standards (GB/T 7095 series, GB5584.2-2009, GB5584.3-2009, GB/T 4074) as well as international IEC standards (IEC 60317 series, IEC 60851 series), ensuring reliable quality for global applications.
    Q What are the main applications of enameled flat wire?
    Enameled flat wire is primarily used in the windings of electrical equipment, including power transformers, reactors, and other high-performance electromagnetic devices. Its flat geometry allows for tighter coil packing and improved space efficiency compared to round wire.

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