Latest Motors Articles

Previous articles in this series explained how oversized piping systems can have higher operating and maintenance costs.

A proven tool to reduce energy consumption, variable frequency drives (VFDs) became increasingly used during the 1970s energy crisis.

A basic electrical safety rule is that water and electricity do not mix.

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.

Many engineers and technicians in the motor control industry consider a programmable logic controller (PLC) a necessary component for variable frequency drive (VFD) control.

Today’s industrial marketplace uses many different machines—such as pumps, fans, compressors and conveyors. One machine that is often overlooked is the centrifuge.

More than ever, commercial building owners and industrial process users need to reduce their maintenance costs and achieve energy savings.

You have probably noticed that three-phase motors can have a varying number of leads exiting the junction box. The most common numbers are three, six, nine or twelve.

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This article is part of our ongoing series on The History of Pumps.

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


The legendary innovator was responsible for the design of more than 40 patented products during his seven-decade career.

During my time in New Orleans for the Siemens Automation Summit, I had the opportunity to tour Louisiana Sugar Refining, LLC (LSR) in nearby Gramercy, La. In Louisiana, sugar is a big business.

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