Motor Testing
Articles
CMMS – Friend or Foe?
In every good maintenance program, there needs to be a place to store a history of problems found and actions taken if we are to learn from our experiences and continuously improve...
- Paul Dufresne
- Reliability Playbook, in Partnership with Lubrication Engineers
Articles
Direct Current Motor Electrical Evaluation Using Motor Circuit Analysis
Direct Current electric motors operate under a basic principle of electricity: interaction between two magnetic fields positioned at an angle from each other will attract/repel resulting in movement...
- Howard Penrose
- MotorDoc LLC
Case Studies and Stories
Energized Motor Testing Reveals Improper VFD Settings
This 55-kilowatt, 400-volt motor is controlled by a variable frequency drive (VFD). This motor drives the centrifugal fan that sends air into a natural gas combustion burner...
- Ettore Di Pasquale
- ALL-TEST PRO
Case Studies and Stories
What is 3 Minutes of Motor Testing Worth to You?
A motor distributor in the Netherlands provided a 17 Kilowatt, 400-Volt motor to a local hospital in 2015. The hospital rented a portable crane to install the motor onto the roof of the building. The motor is used to operate a fan that is mounted on the hospital’s roof...
- Richard Scott
- ALL-TEST PRO
Articles
Tips for a Lean Approach to Motor Reliability
Maintaining the highest reliability standards for electric motors is the goal of every company. Unfortunately, in an era that emphasizes lean operations, too many businesses fall short. When they do miss the mark, the costs for either repair or replacement can be prohibitive...
- Noah Bethel
- PdMA Corporation
Case Studies and Stories
Deep Well Vertical Pump Analysis using Electrical Signature Analysis (ESA)
There are many advantages that vertical pumps provide over horizontally mounted pumps and when they operate properly they generally provide many years of reliable, maintenance free operation. However, in almost any plant with a large inventory of vertical pumps they will have one or more of these pumps that are considered “bad actors”...
Case Studies and Stories
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...
Two Minute Tips
Motor & Generator Storage
Electrical machine (motors & generators) storage will affect the life of the equipment...
Case Studies and Stories
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...