Electrical Bearing Protection Q&A - Part 23
Q1. How you install grounding in concrete? I have a pump being retrofit with a new VFD.
Posts about Electrical Bearing Damage:
How Can Insulated Bearings Get Electrically Damaged?
A couple of months ago, we published a Q&A post including an account of electrically damaged...
Case Study: Electrical Bearing Damage in a Water Treatment Plant
In 2009, the city of Hutchinson, Kansas opened its new Reverse Osmosis Water Treatment Center. The...
Diagnosing Electrical Bearing Damage
When an electric motor bearing fails prematurely, you should try to determine why it failed. If...
Common Mode Filters Can't Prevent (all) Electrical Bearing Damage
As the problem of VFD-caused electrical bearing damage becomes better known, more electric motor...
A New Technical Reference for Condition Monitoring
Enhancing System Reliability through Vibration Technology, by James Sylvester, is a new manual of...
Preventing VFD/AC Drive-Induced Electrical Damage to AC Motor Bearings
The use of variable frequency drives (VFDs) to control AC motors has increased dramatically in...
ABB Launches AEGIS Shaft Grounding Ring Option Code VC588 for IEC Motors
ABB's new Variant Code for IEC Low Voltage Motors (VC588) uses AEGIS® Shaft Grounding Rings...
In Space, No One Can Hear Your Bearings Fail
We recently came across a remarkable video about bearing failure due to electrical damage. But...