New high-voltage insulation for stator windings

ANEW TYPE OF synthetic resin-bonded mica tape insulation has been developed for high-voltage machine stator windings and is being applied widely to turbine generators. This new insulation has improved physical, electrical, and thermal properties as compared to earlier forms of high-voltage machine insulation. The insulation consists of multiple layers of continuous mica tape impregnated with a solventless heat-reactive resin.