Rewinding and Varnishing

Concept

Rewinding involves the complete replacement or repair of stator or rotor windings to restore electrical integrity. Varnishing is applied to improve insulation strength, mechanical rigidity, and protection against environmental factors.

Purpose

• Restoration of insulation system after failure or aging
• Improvement of dielectric strength and thermal endurance
• Protection against moisture, dust, and contaminants
• Enhancement of mechanical bonding and vibration resistance

Application of Our Facility and Equipment

Rewinding is carried out using Class H insulation systems, supported by in-house coil manufacturing machines. Windings are processed using dip varnishing systems and cured in large-capacity baking ovens to ensure proper impregnation and insulation bonding. The process is controlled to maintain insulation integrity and long-term reliability. Vacuum pressure impregnation system is planned for future enhancement.

Standards Reference

EASA AR100, IEC 60034