These transients, which vary in amplitude and frequency, can erode or cause insulation breakdown in motor windings. Adjacent loads turning on or off, power factor correction capacitor banks or even distant weather can generate transient voltages on distribution systems. Transient voltages can come from several sources either inside or outside of the plant. This article demonstrates how to detect the 13 most common causes of winding insulation and bearing failure in advance. Winding insulation breakdown and bearing wear are the two most common causes of motor failure, but those conditions arise for many different reasons. It’s important to remember that the causes of motor and drive issues are not confined to a single domain of expertise–both mechanical and electrical issues can lead to motor failure–and being armed with the right knowledge can mean the difference between costly downtime and improved asset uptime. Motors are used everywhere in industrial environments and they are becoming increasingly complex and technical, sometimes making it a challenge to keep them running at peak performance.
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