Enameled Wire
Your Leading Enameled Wire Supplier
Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.
Why Choose Us?
Production Capacity
With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.
Advanced Equipment
We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.
Quality Control
All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.
OEM & ODM Capability
Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.
Technical Specifications of Enameled Wire
|
Parameter |
Specification |
|
Conductor Material |
Copper (Cu), Aluminum (Al), Copper-Clad Aluminum (CCA) |
|
Diameter Range |
0.02 mm – 5.00 mm |
|
Insulation Type |
Polyester (PE), Polyurethane (UEW), Polyesterimide (EI), Polyamide-imide (AI) |
|
Thermal Class |
130°C / 155°C / 180°C / 200°C / 220°C |
|
Breakdown Voltage |
≥ 2 kV (depending on thickness and standard) |
|
Insulation Thickness |
Single, Heavy, Triple Build |
|
Standard Compliance |
IEC 60317, NEMA MW1000, JIS C3202 |
|
Elongation |
≥ 15% |
|
Adhesion |
No cracking after elongation test |
|
Solderability |
Direct solderable |
|
Surface Quality |
Smooth, pinhole-free, consistent coating |
|
Packaging |
Spool, coil, drum, or customized |
|
Color Options |
Natural, red, green, blue |
|
Application Fields |
Motors, transformers, relays, inductors, EV components |
Good insulation performance: The surface of the enameled wire is coated with insulation paint, which can effectively isolate the wire from the external environment, prevent safety issues such as leakage and short circuits.
Good corrosion resistance: The insulation layer of enameled wire has good corrosion resistance and can work stably for a long time in humid or corrosive environments.
Stable temperature characteristics: Enamel wire can work for a long time at higher temperatures without causing a decrease in wire performance due to temperature changes.
Smaller outer diameter: The insulation layer of enameled wire is very thin, so the overall outer diameter is relatively small, suitable for inductor designs with limited space.
Good mechanical properties: Enamel wire has good flexibility and tensile resistance, can withstand certain tensile and bending, and is not easy to wear.
Electric Motors:
Enameled wires are essential in electric motors, where they are used in the winding of coils. Their high electrical conductivity and thermal resistance contribute to the motor’s efficiency and reliability.
Transformers:
Enameled wires are the backbone of transformers, where they help in the transmission of electrical energy between coils. Their ability to withstand heat and maintain electrical insulation is critical in this application.
Inductors:
Inductors, which are crucial components in various electronic devices, enameled wires enable the creation of compact and efficient coils.
Electromagnets:
Enameled wires are used to create powerful electromagnets for applications like magnetic resonance imaging (MRI) machines and magnetic locks.
Customization Options
Diameter Tolerance: Customizable
Insulation Type: Customizable
Logo: Customizable
MOQ: Customizable
Manufacturing Process
Enameled Wire: The Difference Between Round and Flat Wire
Compared with round wire and flat wire, the slot full rate is higher. Under the same winding space conditions, the slot full rate of enamelled copper flat wire can reach more than 95%, which solves the problem that the coil is difficult to improve for a long time problem, so that the resistance is reduced and the capacitance is larger, which can better meet the requirements of high-capacity and high-load applications.
Under the same cross-sectional area, it has a larger surface area than the round enameled wire, and its heat dissipation area also increases accordingly.
Compared with round wire, flat enamelled copper wire takes up less space than the coil of enamelled copper round wire, which can meet the design requirements of electronic and motor products with smaller volume, lighter weight and higher power density.
The thickness of the corner paint film is similar to that of the top paint film, which is beneficial to maintain the insulation of the user's coil.
Methods for Determining Whether an Enameled Wire Is Coated
Visual Inspection
Enameled wire has a distinct glossy, reflective finish and typically comes in colors such as amber, red, green, or deep gold. It feels smooth and slick to the touch compared to the matte or oxidized surface of bare copper.
The Scratch Test
Use a craft knife or sandpaper to gently scrape the surface. If the wire is enameled, you will see a thin layer of transparent or colored film being removed, revealing the bright, pinkish-orange raw copper underneath.
The Multimeter Test
Set your multimeter to the "Continuity" or "Resistance" setting. If you touch the probes to the surface of the wire and there is no beep or reading, it is enameled. Once you scrape off a small patch of the coating and touch the bare metal, the multimeter will signal a connection.
Ordering Process
Send Us Inquiry → Receive Our Quotation → Negotiate Details → Confirm the Sample → Sign Contract/Deposit → Mass Production →cargo Ready → Balance/Delivery → Further Cooperation
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Our Service Highlights
Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.
During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.
Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.
After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.
Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.
Packaging & Shipping
Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation.
Certificates
We're well-known as one of the leading enameled wire manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality enameled wire made in China here from our factory. Contact us for more details.
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