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Prevent electric erosion in variable-frequency drive bearings

Hydrocarbon Processing / August 2010
Hydrocarbon Processing Staff: Bloch, Heinz P.
Maintenance & Reliability / Motors / Rotating Equipment

Here are the reasons and remedial actions

Case 57: Troubleshooting the cause of sudden impacts

Hydrocarbon Processing / July 2010
Consulting Engineer: Sofronas, A.
Maintenance & Reliability / Compressors / Drivers / Economics / Engineering & Design / Motors / Piping / Pumps / Rotating Equipment / Safety

Finding the cause can be elusive but calculations help

Consider low-voltage AC drives for hazardous areas

Hydrocarbon Processing / June 2010
ABB Oy: Riikonen, J.
Process Control / Process Optimization / Motors / Rotating Equipment

Such drives used with electric motors can offer significant process improvements and energy savings for equipment used in explosive zones

HP Reliability: Grounding-ring technology for variable-frequency drives

Hydrocarbon Processing / April 2010
Maintenance & Reliability / Motors / Rotating Equipment

HEINZ P. BLOCH, Reliability/ Equipment Editor     Comments? Write:HB@HydrocarbonProcessing.com   Variable-frequency drives (VFDs) provide substantial energy sav..

Understand AC induction motor vibration

Hydrocarbon Processing / March 2002
Qatar Fertilizer Company: Mansoor, A.
Motors / Rotating Equipment

Use these guidelines to diagnose mechanical and electrical problems