If you’re a technician and it’s your job to take these readings with a hand-held data collector, this trend can be described with one word - boring. While there is always value in taking a reading on a rotating asset and using your 5 senses to look for issues that might not be picked up with vibration, this only extends so far for machines that rarely have issues..
Learn the benefits of trending average inductance on an electrical motor to find rotor bar issues. This case study involves a motor which could not be replaced due to its unique design. Investigating the rotor bar health in a timely manner saved the automotive manufacturer approximately $350,000.
- Noah Bethel
- PdMA Corporation
Today, there is a new generation of CMS devices that overcomes the barriers that have traditionally prevented an adequate condition monitoring service on critical rotating machinery. The use of these new CMS, in combination with the usually pre-installed Machine Protection Systems (MPS), requires a proportionally small investment, but provides numerous advantages that increase the reliability of those assets...
Variable frequency drives (VFDs) have become a preferred method of process control for electric motor driven equipment ranging from vertical water pumps to centrifugal air fans. The following is a basic discussion of risks of using a VFD with direct driven centrifugal fans and methods of mitigating those risks to maintain equipment reliability.
- David Sheffler
- IVC Technologies