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...
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...
The construction, seals and protective monitoring contribute to the motor’s ability to operate in and under water.
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.
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.
A dewatering facility brings a centrifuge up to speed slowly, meeting the long acceleration time requirement.
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...
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...
Why Wye? Why Delta?
Last of Three Parts
Why Wye? Why Delta?
Pumps & Systems, July 2013Second of Three PartsThe secondary configurations reviewed in Part One (Pumps & Systems, June 2013) are typical three-phase configurations found in pump applications....
Why Wye? Why Delta?
First of Three PartsOne of the more confusing elements of three-phase power is the winding connection schemes for inductive devices such as transformers and motors. Although most of us with a basic...
Motor Nameplate Letter Code Designations
Learn how to avoid misinterpretations.
Pumps & Systems, June 2009The pump industry is the largest purchaser of electric motors in the United States. According to the U.S. Department of Energy (DOE), electric motors consume more 50...
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.
Stainless Steel Motors
In the food industry, stainless steel performs more productively and efficiently.
Plant Upgrades Improve Efficiency at Midwest Refinery
Equipment and technology improvements can be sound investments.
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...
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...
Retrolifting Lift Stations with Submersible Motors
In the February 2008 issue, we discussed various ways to lift water ("Lifting Water: What Are Your Pump Options?", Pumping Prescriptions). Starting with the 4,000-year-old Archimedes Screw, we touched...
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...
Pump Noise and Vibration Attentuation
Unanticipated noise and vibration can be problematic for both occupants and processes within structures. Noise and vibration in piping systems can originate at pumps and other mechanical equipment. If...
Explosion Proof Couplings
Mechanically generated sparks, electrostatic discharge and high surface temperatures are all potential ignition sources in explosive atmospheres. Flexible couplings play a significant role in creating...
Disc Couplings 101
Most of us probably never notice the spinning cylinder mounted between the pump and motor, except how easy it is to dis/assemble when a pump or motor is changed out. Otherwise, the disc coupling never...
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...
Pumps & Systems, June 2007 Named for a technique commonly used on failing pumps, "percussion maintenance" - where a technician beats on the pump's stalled motor with a hammer or rubber mallet...
Pumps & Systems, June 2008It is impossible to balance line-to-line voltages perfectly in a three-phase circuit. In fact, line voltages typically differ by a few volts or more, but a difference...
Pumps & System, June 2008Bigger Is Better-Or At Least It Used To BeOwing partly to tradition, the shafts of electric motors are often larger than those of the equipment they drive. Engineers were...