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...
Drives to Reduce Harmonics
Cost-effective solutions reduce harmonics and improve system reliability, efficiency. Energy efficiency requirements, regulatory compliance, increasing energy costs and improving system and...
Vertical Motors Help Solve Pumping Problems
The benefits of these motors provide the flexibility needed for challenging pump applications. In the early 1920s, California’s agricultural industry was booming. As the demand for the Golden...
How Motors Have Changed the Pump Industry
Read more about The History of Pumps here. Electric motors have had a huge impact on the pump industry. While it is not certain how centrifugal pumps were powered in the early days, it is...
Environmentally-Friendly HVAC Solution
Improved motor starters help Fabri-Kal achieve its green vision.Fabri-Kal's 400,000-square-foot plant in Kalamazoo, Mich., was formerly a vacant brownfield site that was transformed during the last...
The economic downturn has delivered a heavy blow to the industrial manufacturing sector in North America. Manufacturers are indicating sales drops of 30 percent to nearly 60 percent compared to that...
As a follow up on my AC Motors series, I thought it would be a good idea to provide a short overview of work, power and torque as it applies to the AC motor. I will provide a reference to a more in...