Consider more than the efficiency rating to select the most cost-effective system for the pumping application.
Eddy current drives offer a cost-effective alternative to VFDs.
Siemens discusses one of their new motors.
Siemens talks with Pumps & Systems about their motors & drives technology, efficiency, and energy conservation.
Reduced downtime is an added benefit of sustainable procedures.
Enhanced diagnostics provide critical data for reliable, efficient operations.
I hope that my last column (Pumps & Systems, September 2014) provided a clearer definition of power factor and how it can be calculated. Power factor can also be explained using a vector triangle, but...
Discharges flowing through the bearings put motors at risk.
Revisiting the fundamentals of data examination, time and resolution can solve equipment issues before they happen.
In my July 2014 column, I demonstrated that three-phase voltage variation can significantly affect several alternating current (AC) motor characteristics. If that variation is large, it can also...
Trusted gateway connections allow for system growth, efficiency and consistent maintenance at Swedish paper mill.
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.
COOKSVILLE, Ontario (April 1, 2014) – Stephen Anderson has joined Lafert NA as a new outside salesman with a focus on the oil and gas industry. Stephen brings with him over 30 years of experience in...
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...
Today’s federal requirements dictate the minimum efficiency of an electric motor, but they do not have any impact on the efficiency of a centrifugal pump. A 10-horsepower, 1,800-rpm motor must meet...
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
Why Wye? Why Delta?
Pumps & Systems, July 2013 Second of Three Parts The secondary configurations reviewed in Part One (Pumps & Systems, June 2013, read it here) are typical three-phase configurations found...
  Maintenance Supervisor Palle Svangren tells Pumps & Systems why Grundfos pumps and motors help make the Crowne Plaza Copenhagen Towers hotel the "Greenest Hotel in the World."