Manufacturers and operators produce, purchase and use better motors with regulated testing.
Price, operating costs and reliability are key factors in any TCO calculation.
The best option for preventing bearing currents depends on the source of the problem.
The updated regulations may require machine redesign and premium efficiency motors and components.
These are the details of the snowmaking machines used during the Winter Olympics in Sochi, Russia.
Price, operating costs and reliability are key factors in any TCO calculation.
Previous articles in this series explained how oversized piping systems can have higher operating and maintenance costs. Higher maintenance costs can adversely affect the reliability and uptime of...
Guidelines for reduced vibration and information on how a pump’s foundation and operating speed affect the vibration response
Ease of installation, improved algorithms, enhanced displays, onboard communication and other technology make VFDs an ideal and cost-effective solution.
The construction, seals and protective monitoring contribute to the motor’s ability to operate in and under water.
Use a mathematical model that estimates vibration at the top bearing of a motor used on a vertical, wet-pit, column type pump.
In 2011, I wrote a five-part series on alternating current (AC) motors and motor efficiency. This column will go into more detail about the impact of efficiency. Efficiency defines how well a motor...
Advanced VFD technology delivers cost and space savings by providing protective features and minimal programming.
A dewatering facility brings a centrifuge up to speed slowly, meeting the long acceleration time requirement.
A VFD and a permanent magnet, direct-drive motor replace a gearbox, reduce maintenance costs and provide energy savings.
Why Wye? Why Delta?
Last of Three Parts
VFDs Save Energy in Pump Applications
Using variable frequency drives provides many benefits to end users.
Electric Motor Repair & Reliability
Repetitive motor failures may be caused by a lack of diagnostic or forensic repair information reported to the motor owner.
Long-Term Motor Reliability
A variable frequency drive’s effect on system efficiency and motor life
Internal Clearance & Its Effect on Bearing Fatigue Life
End users must include bearing clearance as an integral part of designing or building a pump.
Motor Nameplate Letter Code Designations
Learn how to avoid misinterpretations.
Protect Operators and Equipment with  Arc-Preventive Motor Control Centers
A strong safety program and preventive equipment are crucial for operator and equipment safety.
Powering the Pump: Diesel Versus Electric Motors
Make the ideal motor selection for irrigation applications.
Last year, a Pumps & Systems reader asked about matching variable frequency drives (VFDs) and motors. “I have a spare pump in my warehouse that requires 15 horsepower (HP) at best efficiency...
Plant Upgrades Improve Efficiency at Midwest Refinery
Equipment and technology improvements can be sound investments.
Stainless Steel Motors
In the food industry, stainless steel performs more productively and efficiently.
Top-of-Motor Vibration
A simple mathematical model can be used to estimate vibration at the top of the motor in a vertical pump-motor structure.
Resonance and Its Effects on Mechanical Structures
Understanding resonance is essential for solving problems of increased vibration. Resonance is a condition that can occur in mechanical structures and can be described as sensitivity to a certain...
Alignment Tolerances
The biggest decision is determining which tolerances to align. In the alignment training classes that we teach, questions arise about alignment tolerances. We often ask, “What are your...