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More-efficient motors: recent legislation forces motors to use electricity in a more miserly way.(GREEN TECHNOLOGY)
- Article from:
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Machine Design
- Article date:
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June 19, 2008
- Author:
- Teschler, Leland
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Copyright informationCOPYRIGHT 2008 Penton Media, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Despite media hoopla about energy-efficient lighting, the real opportunity to save energy for many businesses and even for homes is in motors. Motorized equipment accounts for 64% of the electricity U.S. manufacturers consume.
The Federal government began mandating energy efficiency for motors in 1992. Motor-efficiency standards (MEPS) went into effect five years later. However, MEPS only covered general-purpose ac-motors. Specifically, the Energy Policy Act, or Epact, which took effect in 1997, listed minimum efficiency levels for polyphase ac-induction motors between 1 and 200 hp having rigid mounting bases.
The regulations stuck to basemount motors because ...
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Finding efficiency and reliability in motor selection.(IEEE 841 motors-...
Pollution Engineering;
July 1, 2004 ;
Malinowski, John;
787 words
......and medium voltage. The NEMA Premium standard first defined...internal losses, producing efficiency levels consistent with NEMA Premium. The Institute of Electrical...decreasing windage losses. NEMA Premium efficient motor manufacturing...
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Choosing motor efficiency: Europe versus U.S.
Electrical Apparatus;
February 1, 2004 ;
Nailen, Richard L;
787 words
......sizable increases in the efficiency of a-c motors made and...Efficiency resulted in the "NEMA Premium" product line (see "NEMA defines 'premium efficiency...Whatever the specific efficiency levels, motor users in North America...of Energy, and only one NEMA. The ...
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Time for a transplant?(www.motorsmatter.org)(U.S. motor efficiencies)
Engineered Systems;
June 1, 2008 ;
Benkhart, Bruce Evans, Edward Richards, Priscilla;
787 words
......Manufacturers Association (NEMA) Premium[R] class motors...between standard efficiency EPAct class motors, or NEMA Premium class motors, which...above the EPAct efficiency levels. [FIGURE 1 OMITTED...standards to create NEMA Premium, which is codified...MG 1 ...
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Q&A: high-efficiency motors: this month's Q&A examines the high stakes...
Product Design & Development;
January 1, 2005 ;
Arrigo, Lisa;
787 words
......and especially NEMA Premium motors--into their...high-efficiency, and NEMA Premium motors differ...they replaced, and NEMA Premium motors have still lower losses. NEMA Premium motors are motors...step beyond EPAct. NEMA Premium applies to ...
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NEMA Premium(TM) Efficient Motor Program Launched.
PR Newswire;
June 14, 2001 ;
787 words
......Motor program, known and marketed as NEMA Premium(TM). NEMA members represent over 80...Energy data, it is estimated that the NEMA Premium(TM) efficiency motor program could save...efficiency to systems application needs, the NEMA Premium(TM) efficiency motor program manufacturers...
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Energizing Efficiency.(PowerSavers Feature)
Electrical Contracting Products;
January 1, 2008 ;
787 words
...Energizing Efficiency By Bill Feldman...years--a return to efficiency levels of the 1950s to...2007 meet Class l Efficiency Levels and conform to recommended transformer efficiency levels as stated in standard...exceed nominal energy efficiency levels as agreed upon ...
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Motor efficiency in the U.S.: The next step
Electrical Apparatus;
August 1, 2008 ;
Nailen, Richard L;
787 words
......mandated specific fullload efficiency levels for standard "general purpose...practical levels was easy; NEMA had already set them up...a second step: the 2001 NEMA Premium designs adopted in collaboration...1%-1.5% at 100 hp (see "NEMA defines 'premium efficiency...premium ...
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HVAC motors.(Emerson Motors)(Brief Article)
Food Processing;
September 1, 2001 ;
130 words
......National Electrical Manufacturers Association (NEMA) Premium efficiency standards. NEMA Premium standards, the most comprehensive in the...products, including the complete motor lines. NEMA Premium sets standards for temperature, torque...
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Motors and drives for 575 V.(MOTION PRODUCTS: Basics of design...
Machine Design;
December 14, 2006 ;
160 words
...Available in 15 to 100-hp sizes, Blue Chip XRI motors meet NEMA Premium efficiency levels. The motor is rated for inverter duty with a 10:1 variable torque and 20:1 constant torque on variable frequency drives with a...
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Motors & drives: models now rated 575 v ac.
New Equipment Digest;
January 1, 2007 ;
111 words
......motors now includes 575-v models. The Marathon Blue Chip XRI motors come in 15 to 100-hp sizes and meet NEMA premium efficiency levels. They are suited for use with compressors, blowers, conveyors, pumps, and in dirty or dusty environments...
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NEMA Launches Motor Program.(National Electrical Manufacturers...
Air Conditioning, Heating & Refrigeration News;
June 25, 2001 ;
Siegel, J.J. Mazurkiewicz, Greg;
189 words
......Premium Efficient Motor program, known as NEMA Premium[TM]. NEMA states that according to Department...DOE) data, it is estimated that the NEMA Premium efficiency motor program could save...road. The organization expects that the NEMA Premium efficiency motors will exceed demand...
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Rockwell adopts NEMA premium standard for Reliance motors.(Rockwell...
Food Processing;
October 1, 2001 ;
430 words
......National Electrical Manufacturers Association (NEMA) and the Consortium for Energy Efficiency (CEE) to developed a new standard of efficiency. NEMA has designated this new level as NEMA Premium and is incorporating it into the NEMA Motor...Automation has been a leader in ...
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The hidden cost of monitoring.(energy consumption costs)
Pollution Engineering;
January 1, 2003 ;
787 words
......companies adopted proven efficiency technologies and practices...comply with the minimum efficiency levels mandated by the Energy...significantly higher efficiency levels above EPAct minimums...motors are known as NEMA Premium[TM] efficient motors...to hold their high ...
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The need for good motor decisions.(What's New)(Motor Decisions...
Motion System Design;
August 1, 2004 ;
178 words
......respondents had some knowledge of the NEMA Premium specifications, but only 3...policy regarding purchase of NEMA Premium motors. 3. While a sizable percentage...need to promote the benefits of NEMA Premium motors and the strategy involved...
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NEMA, CEE, EASA promote energy-efficient motor initiatives.(National...
Control Engineering;
August 1, 2001 ;
340 words
......supply problems and increasing power costs. NEMA Premium The first program, NEMA Premium, by the National Electrical Manufacturers...motor production and sales. The voluntary NEMA Premium Efficiency Electric Motor Program expands...
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