Motors

Latest Motors Articles

I hope that my last column (Pumps & Systems, September 2014) provided a clea

Many industries use variable frequency drives (VFDs) with induction motors. Introduced in the 1960s, VFD technology has advanced considerably during the past 50 years.

Q. Are the pump motors special for VFD operation or can any motor be used with a VFD?

Located in one of the fastest growing regions in the U.S., the Benton/Washington Regional Public Water Authority (BWRPWA) broke ground in 1996 for a water treatment facility serving northwest Arka

Inexperienced vibration analysts encounter a common problem: They are often expected to learn too much, too fast.

Power factor (PF) is an important component of an alternating current (AC) circuit, but understanding its actual effect can be difficult. Why is PF mysterious to many of us?

In my July 2014 column, I demonstrated that three-phase voltage variation can significantly affect several alternating curre

Motor manufacturers routinely answer questions about the differences between submersible and immersible motors and the applications best served by each design.

Paper production requires large amounts of power. The Smurfit Kappa plant in Piteå, Sweden, uses its own biomass boilers to meet part of its energy needs.

In my June column on pump and motor testing, I said that three-phase voltage variation and unbalance can have a significant effect on motor insulation life.

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I hope that my last column (Pumps & Systems, September 2014) provided a clearer definition of power factor and how it can be calculated.

Who determines where pressure gauges are located in a pump system? How close to the pump should they be, and what happens if these rules are not followed?

A reciprocating power pump, as depicted in Figure 1, is a displacement machine. It has characteristics that are different than a centrifugal pump.

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The global water crisis claims 5,500 lives each day—more than war, natural disasters, AIDS or hunger. It is a sobering problem but not an impossible one to solve.

Beautiful, inspiring, even haunting—these are some of the words that describe the National 9/11 Memorial fountains in New York.

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