Digard®
is a specially-developed epoxy powder used in the riser insulation
system. The electro statically applied powder is preferentially
attracted to the riser edges. As a result, the insulating material
is actually thicker at critical edge areas. This coating is applied
to the armature when hot, allowing the powder to melt and flow.
This smooth, void-free surface provides long creepage paths and
prevents carbon dust from adhering, thus eliminating the major
cause of low insulation resistance in DC machines.
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