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'Verifying' motor efficiency is no easy task
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The difference between full-load efficiency and nameplate is indicated by colors
GREEN, YELLOW, RED . . . WHAT COLOR IS your motor? No, we're not referring to the finish paint. Rather, those colors have been used to denote the degree of agreement between actual motor full-load efficiency and the value shown on the motor nameplate, required by NEMA standards, and tabulated in the 1992 Energy Policy Act, or EPACT. For any user who (for whatever reason) feels that any motor design fails to comply, a thorough understanding of just what compliance involves is essential. The issues are complex.
The ...
Related newspaper, magazine, and trade journal articles from HighBeam Research
(Including press releases, facts, information, and biographies)
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What, again? NEMA rewrites its motor standards
; ...these words: "In trying to streamline NEMA Standards publications-that is, by removing...adopts "by reference." Among other NEMA standards referenced, MG10 continues to be...give users a direct voice in the NEMA standards--
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Motor, generator standards
; Motor, generator standards NEMA Standards MG 1-2003, Revision 1-2004: Motors and Generators. National...standards are involved in motor technology, this set of NEMA standards has for decades been considered the bible of the motor industry...
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Motors. (electric; includes related articles) (Plant Engineering's Encyclopedia: Electrical)
; ...operating conditions. Motor Design Features Covered/Not Covered by NEMA Standards NEMA standards cover motors through 445 frame size. ANSI standards in general meet NEMA standards, except in dimensions. Covered by NEMA Standards 1. Horsepower...
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Motors. (The 1991 Plant Engineering Encyclopedia)(includes related articles)
; ...operating conditions. Motor Design Features Covered/Not Covered by NEMA Standards NEMA standards cover motors through 445 frame size. ANSI standards in general meet NEMA standards, except in dimensions. Covered by NEMA Standards 1. Horsepower...
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Nuisance trips in motor circuits--what's the problem?
; ...low-voltage ratings below 250 hp, the latest NEMA standards and utility conservation programs have...definition of the term inrush appears in NEMA standards, however.) What the ammeter doesn't...effect was first recognized fully by NEMA standards in 1993 (MG Para. 12.36 in the 1998...
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Selecting and specifying motor control centers. (Electrical)(includes related articles) (Cover Story)
; ...management, and other electrical functions. NEMA Standards NEMA standards have always been the prevailing industry standards...the North American market; controls meeting NEMA standards must also meet the safety performance requirements...
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Standard Electrical. (Product News).
; ...made from a wide range of materials; available from .008-in, to .080-in. thick; suitable for nearly every type of wire crimping application including welding and DC; meet UL 310-, NEMA standards, and QS9000 requirements. ETCO Inc. ENTER NO. 635
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Motors and drives.(LITERATURE & CATALOGS)
; ...when using the company's premium-efficiency motors and ASDs. Included is an overview of the Super-E[R] motor which exceeds NEMA standards, a cross-sectional drawing of the motor, and a copy of the company's BEST software. --Baldor FREE INFO: CIRCLE NO. 509...
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Should you be afraid of Design E motors?
; ...costly errors in retrofit/replacement situations . . ." NEMA standards for Design E, approved in 1993, do indeed include higher...true, we begin by recalling how Design E found its way into NEMA standards. When the 1992 Energy Policy Act (EPACT) was created, it...
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Stainless steel pump line.(Product Showcase: "Pumps and Related Technologies")(Buyers Guide)
; Shakti Pumps offers all-stainless steel pumps in sizes from 4 inches to 12 inches. Pump capacities range from 1.2 gpm to 1,400 gpm. These pumps conform to NEMA standards, and they provide a maximum head of up to 2,250 feet. Shakti Pumps, Card No. 319 [ILLUSTRATION OMITTED]
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