January 30, 2014 – A 36-page, colour handbook—the Aegis Shaft Grounding Ring Motor Repair Handbook—explains how to diagnose electrical bearing damage caused by variable frequency drives (VFDs), also known as inverters.

Available from Electro Static Technology, the book then goes on to highlight several best practices for preventing such damage to motors of various sizes and horsepower ratings. The handbook is available in PDF format for downloading free of charge at www.est-aegis.com/bearing.