Micro enameled wire (0.04-0.10mm) product performance advantages:
High elongation:0.05mm elongation 28%~30%, meeting the processing requirements of ultra-high-speed winding machines.
Transformer Winding
Transformer Winding Materials
Complete Conductors & Winding Solutions for Transformer Manufacturing
Transformer windings are the heart of every transformer, directly affecting efficiency, temperature rise, short-circuit strength, and service life. We supplies a complete range of transformer winding materials, including magnet wire, copper foil, aluminum foil, paper-covered conductors, and transposed conductors for power transformers, distribution transformers, dry-type transformers, and reactors.
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![Enameled Copper Magnet Wire]()
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![Polyesterimide Enamelled Copper Wire]()
Polyesterimide Enamelled Copper WireEIW/180 enamelled copper wire, 0.08–3.50 mm. Built for winding tension, abrasion, cut-through and thermal shock. GB/T 6109.5, IEC 60317-8.read more -
![Polyester Enamelled Round Copper Wire]()
Polyester Enamelled Round Copper WireMost motor and appliance manufacturers do not buy to one standard. They buy to four, because their customers' drawings do: a domestic project cites GB/T, a European one cites IEC, a Japanese...read more -
![Enamelled Aluminium Round Wire Class 240]()
Enamelled Aluminium Round Wire Class 240Where voice coil winding scrap actually comes from, how thermal class affects BOM cost, and how to pick the lowest class that survives your duty.read more -
![Polyester Overcoated With Polyamide-Imide Enamelled Aluminium Wire]()
Polyester Overcoated With Polyamide-Imide Enamelled Alumi...Class 220 enamelled aluminium wire, EI/AIW/220 Q(ZY/XY)/L, 0.20–6.00 mm. For high-power-density transformers, inverter reactors and sealed high-ambient designs.read more -
![Polyester(imide) Overcoated With Polyamide-Imide Enamelled Aluminium Wire]()
Polyester(imide) Overcoated With Polyamide-Imide Enamelle...Class 200 enamelled aluminium wire with polyester(imide) base and polyamide-imide overcoat. For cast-resin transformers, hermetic compressors, inverter magnetics.read more -
![Polyesterimide Enamelled Aluminium Round Wire, Class 180]()
Polyesterimide Enamelled Aluminium Round Wire, Class 180Class 180 enamelled aluminium round wire, EIW/180 QZY/L, 0.20–6.00 mm to IEC 60317-15 and NEMA MW 76-A. TDS and free samples on request.read more -
![Polyester Enamelled Aluminium Round Wire]()
Polyester Enamelled Aluminium Round WirePEWA130 and PEWA155 enamelled aluminium round wire, 0.20–6.00 mm to GB/T 23312.3 and NEMA MW 24-A, for appliance motors and distribution transformers.read more -
![Conductive Copper Rods For Transformers]()
Conductive Copper Rods For TransformersCopper Foil Winding (ASTM B152 standard) refers to high-purity cold-rolled copper with a copper content of ≥99.9%, H65/H68 state (hardness optional), thickness 0.05-3mm, width ≤600mm...read more -
![Transposed Conductors]()
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![Oxygen-free Copper Flat Wire]()
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![T2 Copper Busbar]()
T2 Copper BusbarCopper Foil Winding (ASTM B152 standard) refers to high-purity cold-rolled copper with a copper content of ≥99.9%, H65/H68 state (hardness optional), thickness 0.05-3mm, width ≤600mm...read more
One-Stop Supplier for
Transformer Manufacturers
Transformer Manufacturers
High-performance enamelled wire and winding materials
designed for optimized transformer efficiency and reliability.
Why Transformer Winding & Enamelled Wire Matter
Transformer winding electrical performance directly affects:
Efficiency & Thermal Performance
High-quality enamelled wire reduces loss and improves heat resistance.
Dielectric & Insulation Reliability
Proper insulation coating and material selection prevent partial discharge.
Mechanical & Vibration Stability
Strong winding cohesion and support materials improve mechanical life.
Compatibility With System Insulation & Core
Matches insulation paper, pressboard, and core geometry for safe long-term operation.
Wire & Winding Product Range
| Product Category | Description | Typical Applications |
| Enameled Copper Wire | High insulation enamel wire coating, high heat resistance | Transformer LV/HV windings |
| Enameled Aluminum Wire | Lightweight, good electrical conductivity | Wide-width windings / cost-sensitive projects |
| Coil & Winding Accessories | Copper foil/aluminum foil | Winding stable mechanical structure |
Transformer Winding Material Selection Guide
Engineering Support & Standards
Engineering Support & Compliance
We support:
✔ Wire & insulation matching to transformer design
✔ Loss & efficiency optimization
✔ Thermal profiling
✔ IEC / ASTM / IEEE standard compatibility
✔ Documentation, test reports, samples
Let us help you minimize design risk and production delays.
Quality Control & Performance Verification
We ensure winding materials meet customer expectations and industry requirements through:
✔ Raw Material Inspection – conductor & coating integrity
✔ Diameter & Roundness Check – consistent wire quality
✔ Dielectric & Insulation Test – meet voltage & thermal specs
✔ Thermal Cycling & Aging Test – long-term stability
✔ Dimensional & Mechanical Inspection – assembly fit & reliability
✔ Batch Traceability & Reporting – project trace control
Dielectric loss system
High temperature breakdown tester
High voltage breakdown tester
Intelligent resistance tester
The enameled layer continuity tetester
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Customer Case: 500kVA Distribution Transformer
Client Background
A medium-sized transformer manufacturer in Southeast Asia producing oil-immersed distribution transformers.
Challenge
The client faced frequent insulation breakdown during winding, especially under high-temperature operation. Their previous supplier had inconsistent coating thickness and unstable adhesion.
Our Solution
·Supplied Class 180 polyesterimide enamelled copper wire
·Strict coating thickness tolerance control
·Provided dielectric breakdown test report
·Delivered trial batch within 15 days
Results
·Reduced winding failure rate by 35%
·Improved production efficiency by 18%
·Established annual supply agreement (120 tons/year)
·Cooperation for over 3 years
Client Feedback
“Stable insulation performance and reliable batch consistency.”
Ready to Source High-Performance Winding Materials?
Share your transformer design and specs:
✔ Transformer type & kVA
✔ Voltage class
✔ Thermal & insulation requirements
✔ Quantity & delivery schedule
Contact Details
If you are interested in working with us then please drop us a line, we would love to hear from you
Weshare Enameled wire
All copper raw materials used are self-produced by the company, and we implement one-stop production from standard cathode copper to oxygen-free copper rods to finished enameled wire products.
High quality guaranteed：
-Strong mechanical properties
-High chemical properties
-Strong electrical performance
-High thermal performance
20+
year experience
5
production line
175,000
tons/moon
5
expert instructors
Quality
National quality standards
-With 20 years of enameled wire R&D, production, sales and service integrated
-Product online testing equipment is fully equipped and tested strictly according to testing procedures. The test data is accurate and has good control over product performance.
-ISO9001 quality management system certification, 5S on-site management is implemented, and the products meet the quality and environmental protection requirements of EU ROHS and REACH.
Production
Excellent material selection
The mechanical strength is comparable to (PVF) enameled wire, the electrical performance is comparable to (UEW) enameled wire, the softening and aging properties are excellent, and the nylon topcoat is suitable for high-speed winding
-Good mechanical strength
-Paint film adhesion properties
-Excellent electrical
-Scratch resistance
-Chemical resistance
-Thermal stability and solvent resistance
Enameled wire production process
220 Aluminum Enameled Round Wire
- Providing thermal resistance up to 220°C, YD 220 also possess the features of good resistance against dipping varnishes, casting resins, solvents and thermal shock performances.
- All products parameters are recorded with quality control system at every stage of production process and following by barcode system until delivery.
- Our products receive approval with production parameters of quality control system according to standards of GB/T23312.7 2009, IEC60317-25, NEMA 35.
Enamelled Copper Flat Wire
Enameled rectangular Wire is coated by the various enamel films on the bare conductor in accordance with customer’s specification. This important wire is used for winding coils for DC motors, transformers, generators, welding machines and other applications.
Size range
-Thickness a: 0.90mm---5.00mm
-Width b : 2.00mm---16.00mm
-Suggested ratio of thickness and width: 1.5
Enameled wire Application
What details should be paid attention to when making enameled wire?
1. Before starting the catalytic combustion hot air circulation enameling machine, the fan should be turned on to circulate the air in the furnace slowly.
Use electric heat to preheat the furnace and catalytic zone so that the temperature of the catalytic zone reaches the specified catalyst combustion temperature.
2. Three attendance and three inspections in production operations.
Frequently measure the paint film once an hour, and calibrate the zero position with a microcaliper before measurement. When measuring the line, the microcard should be kept at the same speed as the line, and large lines should be measured in two vertical directions.
Frequently observe the back-and-forth wiring and tension tightness, and make timely corrections. Check that the lubricant is suitable.
Always look at the surface to see if there are particles, paint peeling and other undesirable phenomena in the enameled wire during the coating process, find out the cause and correct it immediately. For defective products in the car, remove the axle promptly.
Check whether all running components are normal during operation, and pay attention to the tightness of the pay-off shaft to prevent rolling, breakage and thinning of the wire diameter.
Check temperature, speed and viscosity according to process requirements.
When inspecting the production process of raw materials, continue to pay attention to whether the raw materials meet the technical requirements.
3. During the production operation of enameled wire, attention should also be paid to explosion and combustion. Combustion occurs in the following situations:
First, the complete combustion of the entire furnace is usually caused by excessive steam density in the furnace cross section or excessive furnace temperature; secondly, when threading, the coating amount of several wires is too large, causing several wires to catch fire. Fire prevention must first strictly control the temperature of the process furnace, and secondly ensure smooth ventilation of the furnace.
4. Clean up after parking.
Cleaning up after parking is mainly to clean the old glue on the furnace mouth, clean the paint tank and guide wheel, and do the painting charter and surrounding environmental sanitation work. In order to keep the paint tank clean, if you are not driving immediately, please cover the paint tank with paper to avoid introducing dirt.
FAQ
Q: What is enameled wire used for?
A: These wire enamels are widely used on wires in electrical motors, refrigeration equipment, transformer windings and ballasts for fluorescent lamps.
Q: What is the difference between copper wire and enameled copper wire?
A: Enamel is a type of insulation that is typically used in coils and transformers. An enameled wire could be made from any metal, with most being made from copper or steel. A copper wire is a wire that the conductor is made from copper
Q: How can you tell if copper wire is enameled?
A: Enameled wire typically has a shiny, smooth surface, and the insulator is usually a solid color, such as red, green, or blue. If the surface of the wire is smooth and does not have the rough texture of bare wire, then it is likely to be enameled wire.
Q: What is the difference between bare wire and enameled wire?
A: Enameled Wire: Enameled wire is more resistant to corrosion due to the protective enamel coating. This makes it a better choice for applications exposed to moisture or harsh environments. Bare Wire: Bare wire is more susceptible to corrosion since it lacks protective insulation.
Q: Do you need to strip enamel wire?
A: For electrical connections, especially soldering, the enamel coating must be removed to expose the conductive metal underneath. Failure to do so can result in poor electrical connections, leading to inefficiency or malfunction in electrical circuits.
Q: How can l get more information about your product?
A: You can send us an emal or ask our online representatives and we can send you the latest catalog and priceist.
Q: Do you accept OEM or ODM?
A: Yes,But we have quantity requirements.please contact us directly.
Q: What is the payment way of your company?
A: T/T,sight L/C,Paypal,Western Union
Q: What is the shipping way?
A: By sea,air,Fedex,DHL,UPS,TNT etc.
Q: How long for manufacturing once we place order?
A: lt's about 20-30 days after payment or disposit.
As one of the leading transformer winding suppliers in China, we warmly welcome you to wholesale high-grade transformer winding made in China here from our factory. All our products are with high quality and competitive price.