+86 13335151337
+86 13335151337
This product has good thermal stability, excellent electrical performance,especially the breakdown voltage is more than twice the international standard,mechanical properties tensile adhesion, the insulation layer and copper wire are firmly attached after bending, and the thermal shock performance is excellent,which can meet all kinds of high temperature working environment.With thin insulation layer, excellent thermal stability, electric and mechanical properties, this product is applicable to the windings of large andmedium-sized motors and generators, transformers and various electric devices.
Breakdown Voltage: More than twice the international standard — Exceptional dielectric strength
Thermal Stability: Excellent performance across a wide temperature range, suitable for high-temperature working environments
Mechanical Adhesion: Insulation layer remains firmly attached to the copper conductor even after bending
Thermal Shock Resistance: Outstanding performance under rapid temperature cycling
Thin Insulation Profile: Maximizes slot fill factor while maintaining full electrical protection
Technical Specifications
|
Parameter |
Value / Description |
|
Product Name |
Enamelled Copper Flat Wire |
|
Conductor Material |
Oxygen-Free Copper / Electrolytic Tough Pitch Copper |
|
Conductor Purity |
≥ 99.95% |
|
Conductor Shape |
Flat / Rectangular |
|
Insulation Type |
Enamel Coating (Polyester, Polyesterimide, Polyamide-imide, or per specification) |
|
Thermal Class |
155°C, 180°C, 200°C, or 220°C (per customer requirement) |
|
Breakdown Voltage |
≥ 2× IEC / NEMA International Standard |
|
Insulation Thickness |
Thin profile, customized to application requirements |
|
Adhesion & Flexibility |
No cracking or peeling after bending; insulation firmly attached |
|
Thermal Shock Performance |
Excellent — Passes rapid temperature cycling tests |
|
Surface Condition |
Smooth, uniform enamel coating; free of pinholes and defects |
|
Available Dimensions |
Width: 2.0 – 16.0 mm / Thickness: 0.5 – 5.0 mm (custom available) |
|
Note: Specific values for tensile strength, elongation, and exact breakdown voltage vary by insulation type and dimensions. Please contact us for detailed datasheets. |
|
Applications
Large and Medium-Sized Motor Windings — AC/DC industrial motors, traction motors
Generator Windings — Turbo generators, hydro generators
Transformer Windings — Power transformers, distribution transformers
Electrical Coils and Inductors — Reactors, choke coils, magnetic coils
Automotive Electrical Components — EV motor windings, alternators
Railway Traction Equipment — High-power traction motors and auxiliary systems
Customization Capabilities
We offer custom dimensions, insulation types, thermal class ratings, and conductor specifications per customer requirements. Available customization includes:
Custom width and thickness per drawing
Choice of enamel type (PE, PEI, PAI, PI, etc.)
Thermal class from 155°C to 220°C or higher
Bare or tinned copper conductor options
Special adhesion and flexibility requirements
Custom lead time: 15–30 working days depending on tooling and specification.
FAQs
Q1: What does "breakdown voltage twice the international standard" mean?
It means our enamel insulation withstands a dielectric test voltage at least two times higher than the minimum value specified by IEC 60317 or NEMA MW 1000 standards for equivalent insulation thickness. This provides an additional safety margin for high-voltage applications.
Q2: How does the thin insulation layer benefit motor and generator design?
A thinner insulation profile allows more copper conductor to fit within the same slot area (higher slot fill factor), which improves efficiency, reduces resistive losses, and enhances overall power density of the finished winding.
Q3: Does the insulation crack or peel when the wire is bent?
No. Our enamel coating is formulated for excellent adhesion and flexibility. The insulation remains firmly attached to the copper conductor even after bending and forming, ensuring consistent electrical protection throughout the winding process.
Q4: What thermal classes are available for this product?
We offer enamel coatings rated for 155°C, 180°C, 200°C, and 220°C continuous operation. Higher temperature grades are available upon request for specialized applications.
Q5: Can you supply custom flat wire dimensions?
Yes. We produce custom width and thickness combinations based on customer drawings. Please provide your specific dimensional requirements for a quotation.
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HOW CAN WE HELP YOU?
We offer customization to meet your specific needs. Our expert team will collaborate with you to develop the perfect product for you
Add: Baoshida Group Industrial Park, No. 8 Kaiyuan Road, East Section of North Industrial Road, Licheng District, Jinan City, Shandong Province, China
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