Motor Testing
Analytical Ferrography Forensics
A steel mill uses this pump to boost the water pressure it supplies to the hot mill for descaling. Thin scale forms rapidly on the hot slab and must be removed before entering the mill stands...
Analytical Ferrography Forensics II
A steel mill uses this motor to drive a double reduction gearbox on a roughing mill at an input speed of 450 rpm. The motor has babbitt sleeve bearings...
Vibration Measurement Techniques for Continuously Varying Speed Machinery
There are a lot of equipment types in industry that exhibit continuously varying speed. This presents a number of challenges to the vibration analyst. If a time sample is collected as the machine is continuously changing speed, the FFT will produce a virtually useless plot...
- Greg Lee
- PRUFTECHNIK
How Do You Make Your Condition Monitoring Program More Valuable?
If you are involved with condition monitoring you probably believe you add value to the organization; your warnings of impending failure allow the company to avoid downtime, reduce costs, and much more. But does management believe you are providing a valuable service...
- Jason Tranter
- Mobius Institute
Current Unbalance in AC Electric Motors
Is there a standard for current unbalance in AC motors...
- Howard Penrose
- MotorDoc LLC
Voltage Variation in AC Electric Motors
I’ve seen different variations of voltage testing on AC induction motors; however, the motor only really cares about the phase-to-phase voltage...
- Howard Penrose
- MotorDoc LLC