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Enameled Copper & Aluminum Flat Wire - Quality Products from China Suppliers and Factory

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Enameled Flat Wire, manufactured from high-quality oxygen-free copper or electrical aluminum rods, is a crucial component in the windings of electrical equipment, including transformers and reactors. This product is meticulously drawn or extruded using precision molds. We categorize our enameled flat wires into six distinct types based on 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 leading enameled flat wire factory and supplier in China, Hengte Electric takes pride in our commitment to quality. We are ISO 9001:2015 certified, and our products have successfully passed SGS and UL tests while obtaining CE certification. For a free quote or more information, contact us here.

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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 the provisions of GB5584.2-2009. At 20℃, resistivity ≤ 0.017241 Ω·mm²/m, meeting different mechanical strength requirements.

    🔷 Soft Aluminum Flat Wire: Complies with the provisions of GB5584.3-2009. At 20℃, resistivity ≤ 0.02801 Ω·mm²/m. According to different insulation requirements, thin film from 0.06 to 0.11 mm or thick film from 0.12 to 0.17 mm can be chosen. The thickness of 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 acetal

    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
    What materials are used to make enameled flat wire?
    Enameled flat wire is made of oxygen-free copper or electrical-grade aluminum rod. These are drawn or extruded through specification moulds to achieve the required flat conductor dimensions before insulating paint is applied.
    What are the main applications of enameled flat wire?
    Enameled flat wire is mainly used in the windings of electrical equipment, including transformers, reactors, and other high-performance electromagnetic devices where precise conductor dimensions and reliable insulation are required.
    What production size range is available 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 based on customer requirements are also available.
    What insulation grades are available, and what do they mean?
    There are two insulation film grades: Grade 1 with a paint film thickness of 0.06–0.11 mm (minimum breakdown voltage of 1000 V at room temperature / 750 V at high temperature), and Grade 2 with a thickness of 0.12–0.17 mm (minimum breakdown voltage of 2000 V / 1500 V respectively). The grade selected depends on the insulation performance required for the specific application.
    What standards do your enameled flat wires comply with?
    Our enameled flat wires comply with major Chinese national standards (GB/T series) as well as international IEC standards including IEC 60317 and IEC 60851, depending on the wire type. Copper conductors comply with GB5584.2-2009 and aluminum conductors comply with GB5584.3-2009.
    What is the difference between the various enameled flat wire types such as QZ, QZY, and QXY?
    The main differences lie in their thermal class and performance characteristics: QZ (Polyester, Class 130) offers high mechanical strength; QZY (Polyester imide, Class 180) provides excellent heat and chemical solvent resistance; Q(ZY/XY) (Class 200) offers superior comprehensive properties including refrigerant and radiation resistance; and QXY (Polyamide imide, Class 220) delivers the highest thermal class with outstanding chemical solvent resistance.

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