For Unequalled Dielectric Strength and Voltage Endurance
Thermalastic is a proprietary, integrated insulation system that
impregnates the wound and connected stator with a solventless
epoxy resin. Developed by Westinghouse over 40 years ago, Thermalastic
is acknowledged as the industry’s premier insulation system
and is under continuous development to maintain its position as
the world’s finest.
Mica is the heart of the Thermalastic insulation system and is
applied to all of the stator coils. The form-wound stator is postimpregnated
with epoxy resin in a vacuum pressure tank and then transferred
to an oven for polymerization. The cycle is repeated to ensure
elimination of corona generating voids. The result is a stator
insulation system that withstands prolonged voltage stresses moisture,
dirt, thermal cycling and chemical contaminants.
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