Explore our primary specifications designed for severe industrial applications demanding high thermal stability and structural durability.
In modern power transmission and electromagnetism design, Super Enamelled Aluminium Wire is a key material that balances mechanical flexibility with high dielectric strength. Unlike copper winding wires, enameled aluminum wire uses high-purity electrical-grade aluminum (with an aluminum content of at least 99.7%) to ensure optimal electrical conductivity while reducing weight. The core wire is coated with a uniform, thin layer of high-molecular polymer insulation, applied through a continuous baking process.
Depending on the target application, different enamel types are used. Polyurethane (UEW) offers excellent solderability, making it ideal for high-precision coils. Polyesterimide (EIW) raises the thermal capability to Class 180, while overcoating with Polyamide-imide (AIW) provides Class 220 thermal performance. This combination allows the wire to resist mechanical stress, solvent breakdown, and thermal overloading.
"According to IEEE transformer insulation lifetime models, upgrading to a Class 220 Dual-Coated (Polyesterimide + Polyamide-imide) Super Enamelled Aluminium Wire reduces thermal failure risk by 40% under transient overload conditions."
To assist electrical design engineers, we outline the primary technical specifications of our super enameled wire portfolio:
| Thermal Class | Insulation Base Chemical Polymer | Standard Breakdown Voltage | Key Application Fields |
|---|---|---|---|
| Class 130 (B) | Polyurethane (UEW) / Polyester (PEW) | ≥ 3.0 kV (Depending on Dia.) | Small transformers, instrument coils, relays |
| Class 155 (F) | Modified Polyurethane (UEW-F) | ≥ 4.5 kV | Fractional horsepower motors, solenoids |
| Class 180 (H) | Polyesterimide (EIW) | ≥ 5.5 kV | Heavy-duty industrial motors, dry-type transformers |
| Class 200 (K) | Polyesterimide + Polyamide-imide (EIW/AIW) | ≥ 7.0 kV | Automotive alternators, high-temperature coils |
| Class 220 (R) | Polyamide-imide (AIW) / Polyimide (PIW) | ≥ 8.5 kV | 800V EV traction motors, wind turbine generators |
While copper has historically been the standard for electrical conductivity, aluminum has become highly competitive due to material technology advancements and changing economic factors. Here are three main engineering reasons:
1. Weight Optimization: Aluminum's density is roughly one-third that of copper. In applications like aerospace, automotive traction motors, and portable generators, using enameled aluminum wire reduces total component weight, which helps improve fuel efficiency and system responsiveness.
2. Thermal Expansion and Dissipation: Enameled aluminum wire dissipates heat faster than copper. This rapid cooling lowers the risk of hot-spot formation within compact winding slots, extending the service life of the motor or transformer's insulation system.
3. Cost Stability: Copper prices fluctuate frequently due to geopolitical and market factors. Aluminum, as an abundant earth metal, provides a more stable cost structure. This helps manufacturers project costs and manage budgets with confidence.
Suzhou Daiming Electrical Materials Co., Ltd. is a global leader in designing, testing, and manufacturing high-performance enameled winding wires. Located in Suzhou's industrial zone, our modern factory covers over 258,333.33 square feet. It serves as a reliable manufacturing hub for enameled aluminum wires, enameled copper wires, and copper-clad aluminum (CCA) wires.
Our company is built on technical expertise and reliable performance. With 30 advanced production lines, automated inline laser measurement systems, and strict QC protocols, we ensure our products meet or exceed international standards like IEC, NEMA, and JIS.
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Engineered to meet specific mechanical profiles, frequency responses, and thermal constraints.
We combine direct access to high-purity raw materials with advanced production technology to deliver reliable, cost-effective solutions.
Every batch of our enameled wire undergoes strict testing to verify uniform insulation thickness, adhesion, pinhole density, and electrical breakdown resistance.
Our enameled wires feature a dense, uniform protective film that resists cracking during high-speed winding processes and maintains performance under constant thermal stress.
We supply a wide range of custom specifications, including ultra-fine round wires, rectangular profiles, and specialized transposition layouts tailored to your equipment designs.
With 30 state-of-the-art production lines, we offer reliable volume manufacturing, fast order fulfillment, and predictable shipping times for international projects.
Our production facilities focus on eco-friendly processes, minimizing solvent emissions and raw material waste, while supporting clean energy technologies worldwide.
Our enameled and insulated conductors are built to perform reliably in demanding power, automotive, and high-frequency environments.
Stay updated with the latest technological breakthroughs, industry trends, and global delivery news from Suzhou Daiming.
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Providing reliable performance and consistent quality across all product grades.
