You may have heard about the relationship between bearing currents and electromagnetic interference, but you’re still not sure how to address this. Understandably, because this is a very complex topic. This complexity has several causes: it’s not simple physics, there are different degrees of bearing currents, and there are many solution providers on the market. However, this doesn’t have to be difficult. Especially because you don’t need to fully understand the problem in detail, let alone describe it mathematically, to choose a conclusive solution. In this one-day course, the problem is described in a simple way and proactive solutions are offered to increase the reliability of your machinery.

After a general introduction to the operation of electric machines and variable frequency drives, the origins of bearing currents and stray currents are discussed in detail. This is explained in a pragmatic and visual way. The possible consequences and risks are also addressed. Then, the detection and measurement of stray currents are discussed in more depth, with a focus on practical tools. After that, the possible solutions are explored. The day ends with compelling case studies.

The course is tailored to maintenance technicians who often encounter the effects of bearing and stray currents and want to understand the problem more thoroughly to avoid future failures. The instructor has a solid theoretical background but can make practical interpretations clear from experience and numerous cases.

Contents:

• S01: Electric machines and VFDs
• S02: Bearing currents and stray currents
• S03: Detecting and measuring stray currents
• S04: Solutions and case studies.