It greatly enhances resistance to corona and high-frequency pulse voltage, effectively suppressing partial discharge under variable-frequency operating conditions, and its insulation service life is far superior to ordinary enameled wires of the same heat resistance grade. Meanwhile, it features high breakdown voltage, low dielectric loss, oil and solvent resistance, and stable moisture resistance. Suitable for harsh working conditions such as inverter-driven motors, servo motors, wind power equipment and new energy motors, it is the preferred wire for windings under high-frequency, high-voltage and high-temperature environments.