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High-Quality Enameled Copper and Aluminum Flat Wire - Trusted China Suppliers and Factory

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Our Enameled Flat Wire, expertly crafted from oxygen-free copper or electrical aluminum rod, is specifically designed for the windings of various electrical equipment like transformers and reactors. Manufactured through precise drawing or extrusion techniques, these wires offer exceptional performance and reliability. Depending on the type of insulating paint used, our enameled flat wires are available in six distinct categories:

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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 China supplier and factory of enameled flat wire, Hengte Electric is committed to excellence. Our products are ISO9001:2015 certified and have successfully passed SGS and UL tests, earning the CE certificate. Reach out to us for a free quote by contacting 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
    Width Ratio
    20 : 1
    Conductor Material

    Soft copper flat wire of enameled flat wire complies with the provisions of GB5584 2-2009. When 20℃, resistivity ≤ 0.017241 Ω·mm²/m, according to different mechanical strength requirements.

    Soft aluminum flat wire of enameled flat wire complies with the provisions of GB5584.3-2009. When 20℃, resistivity ≤ 0.02801 Ω·mm²/m. According to different insulation requirements, can choose thin film from 0.06 to 0.11 mm or thick film from 0.12 to 0.17 mm. The thickness of hot adhesive enameled flat wire self-adhesive layer is generally 0.03 to 0.06 mm. Our company monitors the thickness with dielectric loss meter.

    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 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 from oxygen-free copper or electrical-grade aluminum rod, drawn or extruded through specification moulds to achieve precise flat conductor dimensions.
    What are the typical applications of enameled flat wire?
    Enameled flat wires are primarily used in the windings of electrical equipment including transformers, reactors, and other high-performance electromagnetic devices requiring efficient space utilization.
    What conductor 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 width ratio of 20:1. Custom specifications can also be manufactured upon request.
    How many thermal grades are available and what do they mean?
    Six thermal grades are available: 120, 130, 155, 180, 200, and 220. Each grade corresponds to a specific insulating enamel type and maximum continuous operating temperature, allowing customers to select the most suitable wire for their thermal environment.
    What is the difference between Grade 1 and Grade 2 paint film?
    Grade 1 has a paint film insulation thickness of 0.06–0.11 mm with a minimum breakdown voltage of 1,000 V (room temperature) and 750 V (high temperature). Grade 2 has a thicker film of 0.12–0.17 mm, offering higher breakdown voltage of 2,000 V (room temperature) and 1,500 V (high temperature).
    Can enameled flat wire be produced to custom specifications?
    Yes. In addition to standard production ranges, our enameled flat wire can be manufactured according to technical specifications and requirements provided by customers, including custom conductor dimensions, insulation grades, and mechanical strength classes.

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