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Selecting an Energy-Efficient Motor
Rebecca Johnson, P.E.
Overview
Over half of all electrical energy consumed in the U.S. is
used by electric motors. Energy savings amounting to many times the
initial cost of a motor can be realized by selecting an energy-efficient motor
for a new application. Substantial savings can also be realized by
replacing older, inefficient motors with new energy-efficient models.
However, selection of an energy-efficient motor is not always cost effective.
Many factors influence the overall cost of a motor including initial capital
cost, efficiency rating, annual hours of use, energy rates, installation and
downtime costs and the availability of utility rebates.
In this course, the student will review the document
"Buying an Energy-Efficient Motor" published by the U.S. Dept. of Energy .
This publication outlines the factors to consider when determining whether
selection of an energy-efficient motor is cost effective.
This course is relevant to engineers and other personnel responsible for
selecting, purchasing and maintaining electric motors.
The student must take a multiple-choice quiz consisting of
ten questions at the end of
this course to obtain PDH credits.
Specific Knowledge or Skill Attained
This course teaches the following specific knowledge and
skills:
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The criteria that defines an energy-efficient motor
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The factors that influence the overall cost of a motor
installation
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Whether an energy-efficient motor is cost effective for
a new installation.
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Whether an existing motor should be replaced with an
energy-efficient model
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When to rewind an existing motor vs. replacing with an
energy-efficient model
Course
Click on the following PDF attachment and review the document "Buying an
Energy-Efficient Motor" prior to taking a quiz for credit.
"Buying an Energy-Efficient Motor" (105 KB)
Having Trouble Downloading the PDF File?
Right click on the link. Select "Save Target As..."
Then save on your desktop. To view the file, double click the icon on your
desktop and return to this page to take the quiz.
You may need Acrobat Reader to view this document.
Click on the link below to download a free copy of Acrobat Reader.
To obtain PDH credits for this course, you will need to take a quiz for
credit. Click on the link below.
(To take the quiz,
your web browser must be set to accept cookies. See how to
check your cookie settings.)
 
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