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Corrosion-Resistant Polyimide Film Covered Wire from China Suppliers and Factory for High-Voltage Applications

Polyimide film covered wire is a high-performance winding wire produced by wrapping 2-3 layers of polyimide film insulation around a conductor made of oxygen-free copper or electrical round aluminum rod. This process involves extruding or drawing the metal through a specific die, followed by annealing to enhance its properties. Our polyimide film covered wire is designed to offer outstanding voltage resistance with a thin insulation layer, capable of withstanding temperatures up to 220°C. It is an essential component in the production of windings for motors, reactors, welding machines, and various electrical appliances. As a leading factory and supplier in China, we provide top-quality polyimide film covered wire, utilizing high-grade electrical bare copper and aluminum as raw materials to ensure reliability and performance

    Standards and Product Specifications
    GB/T 7673-2008 Compliant

    Our production strictly follows GB/T 7673-2008 and corresponding Enterprise Standards, ensuring high precision, consistency, and reliability across all product lines. Each conductor is manufactured using advanced processing technology and quality-controlled under international standards to meet the demanding requirements of electrical and electronic industries.

    Specifications of Aluminum Flat Wire

    We offer aluminum flat wires with excellent conductivity, lightweight properties, and superior flexibility, making them suitable for transformers, reactors, and electric motor windings. Aluminum conductors are also favored for their cost-effectiveness and corrosion resistance in high-efficiency power systems.

    Narrow Side Dimension
    1.00 mm – 8.00 mm
    Wide Side Dimension
    3.00 mm – 25.00 mm
    Specifications of Copper Flat Wire

    Copper conductors are characterized by their outstanding electrical conductivity, heat resistance, and mechanical strength, ideal for high-power applications, transformers, and precision electronic devices.

    Narrow Side Dimension
    0.90 mm – 6.00 mm
    Wide Side Dimension
    2.00 mm – 16.00 mm
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    If your required size or specification is beyond the above range, customized production can be arranged to meet your specific design and technical needs.

    Breakdown Voltage of Polyimide Film Wrapped Wire

    The breakdown voltage and insulation performance of our polyimide film wrapped wire strictly conform to the corresponding business and industry standards, ensuring stable dielectric strength, long service life, and excellent thermal endurance under extreme operating conditions.

    Technical Parameter
    Wrapped Process Insulation Thickness (mm) Min Breakdown Voltage / V >
    Nominal Value Tolerance
    2-layers polyimide film self-locking wrapped 0.15 ±0.03 6000
    2-layers polyimide film wrap in the opposite direction 0.15 ±0.03 6000
    3 layers of polyimide film wrap in the opposite direction 0.23 ±0.03 7000
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    Frequently Asked Questions
    Q
    What standards do your flat wires comply with?
    Our flat wires are manufactured in strict accordance with GB/T 7673-2008 and corresponding Enterprise Standards, ensuring each product meets high precision, consistency, and reliability benchmarks required by international electrical and electronic industries.
    Q
    What size range is available for aluminum flat wire?
    Aluminum flat wires are offered with a narrow side dimension ranging from 1.00 mm to 8.00 mm and a wide side ranging from 3.00 mm to 25.00 mm. Custom sizes outside this range can also be arranged upon request.
    Q
    What are the available dimensions for copper flat wire?
    Copper flat wires are available with a narrow side from 0.90 mm to 6.00 mm and a wide side from 2.00 mm to 16.00 mm. If your required specification falls outside this range, customized production can be arranged to meet your specific design and technical requirements.
    Q
    What is the minimum breakdown voltage of your polyimide film wrapped wire?
    Depending on the wrapping process, the minimum breakdown voltage ranges from 6000 V (for 2-layer configurations) to 7000 V (for 3-layer opposite direction wrapping), all conforming to relevant business and industry standards.
    Q
    What are the key advantages of aluminum flat wire over copper?
    Aluminum flat wire offers a cost-effective and lightweight alternative to copper, with excellent conductivity, superior flexibility, and strong corrosion resistance. It is particularly favored for transformers, reactors, and motor windings in high-efficiency power systems where weight and cost savings are critical.
    Q
    Can you produce flat wires with custom specifications?
    Yes. If your required size or specification exceeds our standard production range for either aluminum or copper flat wire, we can arrange customized production to meet your specific engineering design and technical requirements. Please contact us with your detailed specifications for a tailored solution.

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