200 Class Corona-Resistant Enameled Wire

At the forefront of motor technology that pursues higher efficiency, higher power density and longer service life, the reliability of the insulation system is the core factor that determines success or failure. Faced with the severe challenge of corona discharge in high-voltage environments, ordinary enameled wires are very easy to age and fail, becoming a hidden danger to system safety and a bottleneck for performance improvement.

At this moment, 200 Class Corona-Resistant enameled wires came into being to provide the ultimate insulation solution for your high-end applications.

Why is corona resistance so important?

Under high-frequency and high-voltage (especially >600V) conditions, such as new energy vehicle drive motors, wind turbines, industrial variable-frequency motors, high-efficiency HVAC compressors, high-voltage inverters, etc., the electric field near the winding conductor is highly concentrated. This can easily cause corona discharge, which is extremely harmful:

✔ Continuous erosion of the insulation layer (paint film), resulting in accelerated aging;

✔ The generation of corrosive substances such as ozone and nitrogen oxides;

✔ And ultimately causing insulation failure, short circuits, and even equipment damage.

200 class corona-resistant enameled wire: a strong wall against corona erosion

FLAIT ALUMINUM’s 200 class corona-resistant enameled wire is designed to withstand the most demanding corona environments. Its excellent performance comes from:

✅ Top corona-resistant grade (200 Class): This is one of the highest corona-resistant grades recognized by the industry, which means that under the same high voltage and high frequency stress, its lifespan far exceeds that of ordinary enameled wire (such as 130-class and 155-class), and its insulation reliability is greatly improved.

✅ Innovative material technology: The specially formulated corona-resistant lacquer (Corona-Resistant Enamel) is the core of which is the incorporation of nano-scale corona-resistant fillers (such as alumina). These particles can effectively disperse and suppress partial discharge energy, greatly delaying the damage of corona to the paint film.

✅ Optimized double-coating structure: The bottom layer provides excellent adhesion and electrical performance, while the surface layer is rich in corona-resistant materials, forming a double protective barrier, significantly improving the partial discharge inception voltage (PDIV).

✅ Excellent comprehensive performance: While ensuring top-level corona resistance, it also has excellent heat resistance (usually corresponding to H class or higher), mechanical strength, chemical resistance, adhesion and weldability to meet complex process requirements.

Application scenarios of 200 Class Corona-Resistant Enameled Wire

• New energy vehicle power system: Drive motor, OBC (on-board charger), DC-DC converter, withstand high voltage, high current and complex PWM waveform, reliability is the key.
• Wind turbine: Generator stator winding, operating in high voltage, humid salt spray environment, long life demand is urgent.
• Industrial variable frequency drive motor (VFD): Withstand high du/dt voltage stress generated by PWM inverter, corona resistance is standard.
• High-efficiency HVAC&R compressor motor: Pursue miniaturization and high efficiency, higher operating voltage, and upgraded insulation challenges.
• High-voltage servo motor and special motor: Aerospace, medical equipment and other fields with extremely strict requirements on space, weight and reliability.

Why choose 200 class corona-resistant enameled wire

✅ Extend equipment life: Significantly reduce the risk of insulation aging caused by corona, ensure long-term stable operation of motors/transformers, and reduce downtime losses.

✅ Improve power density and efficiency: Support higher operating voltage design to help achieve smaller and more efficient motor systems.

✅ Enhance system reliability: Provide more robust insulation protection in high-frequency and high-voltage environments, reduce failure rates, and improve product reputation.

✅ Reduce total cost of ownership (TCO): Although the initial cost may be slightly higher, the long life, low maintenance, and high reliability it brings make the overall cost more advantageous.

✅ Meet strict standards: The product has passed the relevant test requirements of international standards such as UL, IEC (such as UL 1441, IEC 60317), and the quality is guaranteed.

200 class corona-resistant enameled wire is an essential core material for the high-voltage and high-frequency era. It is a reliable choice for new energy vehicle motors, wind turbines, industrial variable frequency drives, and high-efficiency HVAC systems. Contact us to get samples and technical consultation, and jointly open a new era of efficient, reliable and long-lasting electric drive!

Original Source:Magnet Wires for Power Industry