Engineered to satisfy strict IEC, NEMA, and JIS standards. Click below for complete specifications, test data, and volume pricing sheets.
An in-depth examination of thermochemical resilience, substrate efficiency, and insulation chemistry for global transmission networks.
The global electrification transition requires electromagnetic components to handle increasingly severe thermal stresses. In modern traction motors, dry-type transformers, and electronic systems, 180 Class (Class H) Enameled Wires provide the reliable insulation required to resist continuous operating temperatures up to 180°C.
By using polymer compounds such as Polyesterimide (EIW) or Polyurethane (UEW) overcoated with Polyamide-imide (AIW), these wires offer high breakdown voltage, mechanical strength, and resistance to chemical solvents. This dual-coat structure ensures the insulation remains sound under mechanical stress, high frequencies, and rapid temperature fluctuations.
Through advanced production processes and testing, we supply global markets with conductors engineered for high slot-fill factors, lowering electrical losses and extending the service life of high-power machinery.
| Thermal Class | Insulation Chemistry | Continuous Temp | Primary Applications |
|---|---|---|---|
| Class 130 (Class B) | Polyurethane / Polyester (PEW/UEW) | 130°C | General-purpose relays, small transformers, micro-motors |
| Class 155 (Class F) | Modified Polyurethane / Polyester | 155°C | Home appliances, standard industrial pumps, auto electronics |
| Class 180 (Class H) | Polyesterimide (EIW) / Dual-Coat AIW | 180°C | Heavy-duty motors, automotive EV powertrains, dry transformers |
| Class 220 (Class C) | Polyamide-imide (AIW) / Polyimide (PI) | 220°C | Aerospace propulsion, high-voltage traction, generator fields |
Addressing localized application demands and long-term design challenges across global energy sectors.
Localized automotive specifications call for enameled wire that can withstand oil-cooling agents, high vibrations, and high voltages. Our Class 180/200 wires support tight hairpin windings to maximize fill factor and motor efficiency.
Renewable installations rely on durable magnet wires to handle moisture, dust, and continuous thermal cycles. Class 180 polyesterimide insulated conductors prevent premature breakdown in coastal and offshore installations.
Switching power supplies produce high-frequency harmonics that lead to skin-effect heating. Our high-grade enameled flat wires reduce eddy-current losses in solar inverters and industrial power conversion grids.
As standard voltages transition from 400V toward 800V and above in electric vehicles and industrial grids, enameled wire is exposed to elevated partial discharge risks. Our research focuses on blending nanoparticle-dispersed metal oxides into the enamel chemistry. This modifier helps dissipate charge buildup and resists erosion from electrical corona discharges, maintaining insulation integrity over extended operational cycles.
Located in Suzhou, China, Suzhou Daiming Electrical Materials Co., Ltd. operates a 258,333.33 ft² manufacturing facility equipped with 30 advanced production lines. We produce high-performance enameled aluminum wires, enameled copper wires, and copper-clad aluminum (CCA) wires.
By managing our processes from raw material inspection and wire drawing to multi-stage enamel baking and spool testing, we maintain the quality control required for reliable wire performance. Our team has over ten years of specialized experience in international electrical standards, ensuring we deliver reliable quality to our industrial partners worldwide.
A look at the quality testing and process control behind each spool of enameled wire.
Every reel of enameled wire is monitored by inline laser detection systems to verify concentricity and uniform film thickness, helping prevent voltage breakdown during operation.
Our Class 180 enameled wire features a uniform and dense polymer coat, offering high scratch resistance, heat shock resistance, and flexibility during high-tension automatic coil winding.
We supply custom wire profiles, winding designs, and custom thermal ratings to meet your precise engineering requirements and optimize your system performance.
With an annual output supported by 30 high-speed lines, we provide dependable shipping and supply chain support to keep your manufacturing operations running smoothly.
Our enameled wires are utilized in high-efficiency, energy-saving electric motors, supporting sustainable global transition goals.
Our enameled wires perform in demanding electrical systems across a wide range of industries.
Ensuring compliance with international standards and providing protective logistics for global shipments.
Our production facilities adhere to global electrical engineering standards. Every consignment is supplied with mechanical, electrical, and chemical test reports confirming adherence to IEC 60317-13, NEMA MW 35-C, and JIS C3202 specifications. This ensures compatibility and performance during installation.
To prevent oxidation and physical damage during sea and air transit, spools are sealed in vacuum-packed plastic wrap with desiccants, then crated in reinforced, palletized wooden boxes. This packaging maintains spool wire alignment and helps prevent surface oxidation, ensuring the wire arrives ready for high-speed automated winding machines.
Stay up to date with updates from our facility, export shipping schedules, and global electromagnetic material trends.
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Read More →Expert answers to common engineering questions regarding the application, characteristics, and supply of Class 180 magnet wires.
Polyesterimide (EIW) 180 Class wire is designed for higher thermal stability and chemical resistance, making it suitable for continuous high-temperature environments. Polyurethane (UEW) 180 Class wire offers direct solderability, which helps simplify manual or automated termination processes by eliminating the need for mechanical or chemical paint stripping prior to soldering.
Yes, but it requires appropriate design adjustments. Aluminum has approximately 61% of the electrical conductivity of copper. To maintain equivalent resistance, the aluminum wire's cross-sectional area must be increased by about 1.6 times. However, since aluminum is much lighter than copper, this substitution can reduce overall winding weight, which is beneficial for weight-sensitive applications such as aerospace and automotive components.
High humidity can cause moisture absorption on the wire surface, which may lead to micro-porosity during welding or rapid temperature increases. To mitigate this risk, Suzhou Daiming ships all wire spools vacuum-sealed in moisture-barrier bags with silica gel desiccants. We recommend storing the spools in dry, temperature-controlled warehouses to maintain insulation integrity.
We perform quality checks at multiple stages: 1) Incoming inspection of raw materials (purity testing for copper/aluminum and polymer properties for varnishes); 2) Continuous monitoring of wire diameter and pinhole counts during drawing and enameling; 3) Final batch testing of elongation, springback, thermal shock resistance, and breakdown voltage prior to shipment.
Explore our wider range of specialized winding wires, continuously transposed conductors (CTC), and custom profiles.
