Fixing Bearing Currents can be as simple as rubbing a bit of paint off

Mark Gurney, 3-Phi Reliability Diamont Room

Description

Inverter driven Motors fault finding with Direct Current Measurements is the single most dominant failure mode in industry.   What are the dominant root cause factors in fault finding bearing currents. Why Direct measurement of High Frequency Current is the most effective method. How to determine what type of Bearing current do I have? What are the mitigation strategies for the different types of current, Common Mode, Differential Mode, Circulatory Current, and Reflective Voltages.

Learning Takeaways: Learn how to measure Bearing Current, and determine the Mitigation Strategy. The different types of Bearing current, and why Insulated Bearings and Brushes don’t always work or fail prematurely.
The root cause is often a simple grounding defect, or termination and why earth resistance is so important.The effect of EMF Cores on Common & Differential Mode, and Reflective Voltages.

Biography

Mark Gurney is a global leader in fault finding Inverter Related Motor Failures.