Epoxy “trickle” impregnation with solventless resin vs. dip and bake in solvent varnish

In recent years considerable improvements have been made in the use of epoxy “trickle impregnation” insulation techniques for electric motors in several significant areas. Yet, in spite of these advances many manufacturers and repair facilities continue to use the same outdated “dip and bake” varnish procedures that have been in use for nearly 100 years.