April webinar replay on contamination-related failures in electrical machine windings, where we explore how conducting materials, moisture, and environmental factors compromise insulation integrity. Electrical machine windings rely on adequate creepage distances for insulation, making them highly susceptible to failure when exposed to contaminants such as oil, water, or atmospheric dust. These contaminants create conductive paths that can lead to turn-to-turn or ground short circuits through surface tracking.

We discuss failure mechanisms, early warning signs, and modern insulation advancements, comparing older organic varnish-based insulation with present-day synthetic resin-bonded materials that better resist moisture absorption.

Attendees will learn how to identify carbonized tracking paths, mitigate contamination risks, and implement preventative maintenance strategies to enhance machine reliability.