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."
Motor Nameplate Letter Code Designations
Learn how to avoid misinterpretations.
Why Wye? Why Delta?
Why a Wye or Delta connection is required in a three-phase circuit
Power Generation on Demand
The application, geography, regulations and proper size must be considered when choosing a generator set.
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.
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...
Shielding Cables on Case Grounds and Surge Protection
Proper shielding and grounding are critical to successful operation.Environments with a lot of electrical magnetic interference (EMI) and/or the potential of power surges, such as those that exist in...
ATLANTA, GA. (March 6, 2012)The Siemens Drive Technologies Division has combined all of its electric motors into one product family with the name Simotics, a move designed to integrate the portfolio...
Dahlonega, Ga. (Feb. 1, 2012)Beta testing begins for AgeAlert™ condition monitoring sensors for motors and generators, which provide real time data on the current condition of the insulation...
The company is first in the electronics sector in Brazil to receive a recommendation for certification of energy efficiency standard. (Jan. 27, 2012) - WEG has just received recommendation for...
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 frame sizes (physical dimensions) of AC motors have changed substantially through the years. Originally, they were considerably larger than those in use today. This increased size was the result...
The frame sizes (physical dimensions) of AC motors have changed substantially through the years. Originally, they were considerably larger than those in use today. This increased size was the result...
AC Motors Part 5: AC Motor Life
One of the major impacts on motor life is common sense—or maybe the lack thereof!It always amazes me how many open drip proof (ODP) motors are used in agricultural irrigation applications where...
AC Motors Part Two-Three Phase Operation
Although a number of AC motor designs are used, the induction motor is, by far, the most common and will be the topic of this column. We will also focus on the three-phase design as it provides a more...
AC Motors: Magnetism and the DC Motor
I received many comments on my four-part series on AC Power, and most of them were very positive. Several readers, however, thought they were too elementary. Ireminded them that the title of my column...
AC Power (Part Four): Transformers
Last of four partsLast month, we studied the properties and effects of resistive, inductive and capacitive loads in an AC circuit. This month, we will take self induction a step further and apply it...
AC Power (Part Three): AC Circuit Loads
AC Circuit LoadsLast month we discussed the relationship between voltage and frequency and tried to make that somewhat complex three phase sine wave a bit more understandable. This month we will...
AC Power Part 1: AC Versus DC
First of Three PartsThis three part primer is a basic introduction to AC power for those in the pump industry who need a place to start. It will also provide several web references to access if you...
AC Power Part Two: Voltage Versus Frequency and the Three Phase Curve
Last month, we ended with a discussion of the relationship between peak and RMS (or effective) voltage. We found that the RMS voltage will always be 0.707 that of peak voltage, and peak voltage will...
Calculating Energy Savings and Payback
Energy efficiency and reduced consumption are important issues in the pump and motor marketplace. Over the long term, electricity costs will continue to increase regardless of our actions. This will...