1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA MG 1-2016Motors and GeneratorsNEMA MG 1-2016Motors and GeneratorsNEMA MG 1-2016Motors and GeneratorsPublished by:National Electrical Manufacturers Association1300 North 17thStreet, Suite 900Rosslyn, Virginia 22209www.nema.or
2、g 2016 National Electrical Manufacturers Association. All rights, including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American copyright conventions. 2016
3、National Electrical Manufacturers AssociationNOTICE AND DISCLAIMERThe information in this publication was considered technically sound by a consensus among persons engaged in its development at the time it was approved. Consensus does not necessarily mean there was unanimous agreement among every pe
4、rson participating in the development process.The National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the document herein is one, are developed through a voluntary standards development process. This process brings together volunteers and/or seeks out
5、the views of persons who have an interest in the topic covered by this publication. Although NEMA administers the process and establishes rules to promote fairness in the development of consensus, it does not write the documents, nor does it independently test, evaluate, or verify the accuracy or co
6、mpleteness of any information or the soundness of any judgments contained in its standards and guideline publications.NEMA disclaims liability for any personal injury, property, or other damages of any nature, whether special, indirect, consequential, or compensatory, directly or indirectly resultin
7、g from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulf
8、ill any particular purpose(s) or need(s). NEMA does not undertake to guarantee the performance of any individual manufacturers or sellers products or services by virtue of this standard or guide.In publishing and making this document available, NEMA is not undertaking to render professional or other
9、 services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining t
10、he exercise of reasonable care in any given circumstance. Information and other standards on the topic covered by this publication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication.NEMA has no power, nor does i
11、t undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health- or safety-related information in this documen
12、t shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summary of Changes, Page 1Summary of Changes made to MG 1-2016 revision/edition. Changes made for the MG 1-2016 revision ar
13、e marked by an black line to the left of the changed material.NOTE: Where text has been revised in more than one version, only the most recent is color-codedExample of change made for MG 1-2016Section II, Part 1010.40.2 Addition/Revision of Superscripts.10.40.2 Revision of Superscripts from 2to 1in
14、items d, and e.Section II, Part 1212.0 Corrected Hp rating from 120 to 12512.35.1 Table Revised table to include an additional column (and footnote) for Locked Rotor kVA Code.Table 12-1 Revised to including Hp and by adding additional column (and Footnote) for Locked-Rotor kVA Code.12.42.2 Added not
15、es referencing air-cooling12.43 Added notes referencing air-cooling12.58.1 Deleted Superscripts 12.58.2 Revised to accommodate 50Hz efficiency ratings. Addition/Revision of Superscripts. 12.60 Revision of title to denote Premium Efficiency12.60.1 Added Rating to title and deleted paragraph as not ap
16、plicable 12.60.1.4 Revised paragraph to include 60Hz and included reference to Table 12-16.12.60.2 Revised paragraph for clarity and changed premium efficient to premium efficiency.12.60.3 Revised paragraph for clarity purposes.12.61 Relocated to follow table 12-21Table 12-14 Corrected table by remo
17、ving strikeouts in 6 pole efficiency columnSection II, Part 1414.3 Addition of items 9 and 10 under letter a. Section II, Part 18Table 2 of 18.250 Correction of frame designationsSection III, Part 2020.8 Addition/Revision of notes20.21.1 Addition/Revision of notes20.21. A Revision of section for inc
18、lusion of 50Hz efficiency and clarification purposes20.21. C.1 Revised to change premium efficient to premium efficiency 20.21. C.2 Revised to change premium efficient to premium efficiency20.21. C.3 Revised paragraph for clarity and changed premium efficient to premium efficiency.20.21. C.4 Deleted
19、 paragraph as information is already covered in 20.21.C.120.25. C.1 Addition of Superscript 3 and associated note. 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summary of Changes, Page 2Section III, Part 2121.10 Addition of notes related to cooling air21.28.3 Addition of items 9 a
20、nd 10 under letter a.Section III, Part 2323.25.3 Addition of items 9 and 10 under letter a.Section III, Part 2424.80.3 Addition of items 9 and 10 under letter a.Section IV, Part 3131.1.3 Addition of items 9 and 10 under letter a.31.4.4.2 Revision/addition of Paragraphs, notes and tables Section IV,
21、Part 3232.33.3 Addition of items 9 and 10 under letter a.Section IV, Part 3233.4.1.2 Addition of items 9 and 10 under letter a. 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summary of Changes, Page 3Changes for MG 1-2016 are not identified. Changes made for the MG 1-2014 revision
22、are identified here.Section I, Part 11.1 Revised text, updated, and occasionally added references1.19.1.2 Updated references to subsections1.27.2 Updated references to subsections1.27.2 Added footnote1.41.2 Reference to added clause1.41.3 Reference to added clause1.54 Revised and redefinedSection I,
23、 Part 44.4.8 Added subtitleSection II, Part 1010.39.1 Addition of letter m to Nameplate Marking RequirementSection II, Part 1212.31 Revised and added characteristics12.58.1 Added references, revised determination of Motor Efficiency and Losses, deleted outdated information, added footnotes12.58.2 Ad
24、ded and revised to include Design N, Design L and Design M single-speed single-phase squirrel-cage small motors, added efficiency levels to Table 12-1012.59 Revised title to Efficiency Levels of Energy Efficient Polyphase Squirrel-Cage Random Wound Induction Motors Rated 600 Volts or Less at 60 Hz a
25、nd added new paragraph12.60 Revised title to Efficiency Levels of Premium Efficientcy Random Wound Electric Motors Rated 600 Volts or Less at 60 Hz12.60.1 Revised title to Random Wound Electric Motor, added paragraph12.60.1.1 Added new subsection title Single-Phase Capacitor-Start Induction-Run or C
26、apacitor-Start Capacitor-Run Small Motors and paragraph12.60.1.2 Added new subsection title Single-Phase Capacitor-Start Capacitor-Run Small Motors and paragraph12.60.1.3 Added new subsection title Polyphase Small Motors and paragraph12.60.1.4 Added new subsection title Polyphase Medium Motors and p
27、aragraph12.60.2 Revised 60 Hz Motors Rated Medium Voltage, 5000 Volts or Less (Form Wound) and paragraph12.60.3 Revised 50 Hz Motors Rated 600 Volts or Less (Random Wound), paragraph, revised formulas, added 8 Pole category to table, revised values12.61 Revised Table 12-11 title, revised Table 12-12
28、, revised Table 12-13, deleted data in Table 12-14, added Table 12-15, added Table 12-16, added Table 12-17, added Table 12-18, added Table 12-19, added Table 12-20, added Table 12-21 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summary of Changes, Page 4Section III, Part 2020.21
29、Addition of kW Values20.21.1 Addition of subtitle, addition of kW Values20.21.A Revision of referenced paragraphs20.21.B Revised paragraph, added Table 20-A20.21.C Revised paragraph, added Table 20-B20.21.C.2 Revised paragraphs, added Table 20-C20.21.C.3 Revised paragraphs, added Table 20-D20.21.C4
30、Added paragraph, added Table 20-E, Table 20-F, Table 20-G20.25.1 Revised Nameplate Marking requirement by the addition of l (NEMA nominal efficiency)Section IV, Part 3131.3.5 Simplified text31.4.4.3 Revised paragraph for clarification purposes 2016 National Electrical Manufacturers AssociationNEMA M
31、G 1-2016Summary of Changes, Page 5Changes made for MG 1-2009, Revision 1-2010 are marked by an orange line to the left of the changed materialNOTE: Where text has been revised in more than one version, only the most recent is color-codedExample of change made for MG 1-2009, Revision 1-2010Section I,
32、 Part 77.4.2 Replaced “inches” with “mils”7.6.1 Revised text Figure 7-1 Renamed figureFigure 7-1 Revised text Figure 7-6 Replaced figure Table 7-17.8.1 Revised tableFigure 7-6 Deleted sectionTable 7-1 Deleted section7.8.2 Deleted section7.8.3 Revised reference to table7.8.4 Revised reference to tabl
33、e7.8.5 Revised reference to table7.8.6 Revised text and reference to table7.9.1 Deleted sectionTable 7-2 Deleted tableTable 7-3 Deleted tableTable 7-4 Added table to replace Tables 7-2 and 7-3Section II, Part 1414.48 Added section 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summa
34、ry of Changes, Page 6Changes made for MG 1-2009 are marked by a red line to the left of the changed materialNOTE: Where text has been revised in more than one version, only the most recent is color-codedExample of change made for MG 1-2009Section I, Part 11.1 Added: Reference to IEC 60034-30-20081.1
35、6 Deleted section1.41.3 Added: Premium Efficiency MotorSection I, Part 22.2 Added: “To prevent confusion with the numerals 1 and 0, the letters “I” and “O” shall not be used.” Updated footnote references Added and revised markings Added: Reference to 2.67 for auxiliary devices2.60.1.2 Revised Figure
36、 2-48B for clarity2.67 Added: Auxiliary Devices (entire section)Section I, Part 4Table 4-2 Dimension revised in column 6Section II, Part 10Table 10-5 Adjusted tableSection II, Part 1212.41 In table, corrected synchronous speed of the 50 Hz machine12.60.3 Added: Additional paragraphs, equation, and t
37、able Table 12-14 Replaced Table 12-1412.62 Revised 12.62a For 12.62b and 12.62d, revised minimum insulation resistance Added: Note Note 2: Updated reference to 20.8Section II, Part 1313.2 Revised frame sizeSection II, Part 18:18.131 Figure 18-16: Dimension revised to 5.875Section III, Part 20:20.18.
38、1 Revised 20.18.1a For 20.18.1b and 20.18.1d, revised minimum insulation resistance20.18.2 Revised 20.18.2a For 20.18.2b and 20.18.2d, revised minimum insulation resistance Added: NoteSection IV, Part 30:Table 30-1 Revised footnote G.1 reference to 12.53 2016 National Electrical Manufacturers Associ
39、ationNEMA MG 1-2016Summary of Changes, Page 7Changes made for MG 1-2006 Revision 1, published Nov. 20, 2007 (includes MG 1- 2006 Errata) are marked by a blue line to the left of the changed materialNOTE: Where text has been revised in more than one version, only the most recent is color-codedExample
40、 of change made for MG 1-2006 Revision 1ContentsEntire Table of Contents was revised due to added sections and repaginationSection I, Part 11.16 Nema Premium Efficiency Electric Motor Changed TM to Deleted general paragraph, added:1.16.1 60 Hz1.16.2 50 HzSection I, Part 22.2 Terminal Markings Footno
41、tes2.20.2 Induction Machines2.24 Direction of Rotation2.60.1.1 Terminal Markings Using “T”2.60.1.2 Terminal Markings in Accordance with IEC 60034-8 Using U, V, WFigure 2-48B Added figure2.61.6 Sixth Revised textSection I, Part 33.1.8 Accessories and Components Inserted sentenceSection I, Part 44.9.4
42、 Parallelism of Keyseats to Shaft Centerline4.9.5 Lateral Displacement of KeyseatsFigure 4-7 Corrected specifications4.9.8 Shaft Extension Key(s)Table 4-7 Corrected specificationsSection II, Part 10 RatingsAC Motors10.38 Nameplate Temperature Ratings for Alternating-Current Small and Universal Motor
43、s Corrected Reference 12.42.310.40.1 Medium Single-Phase and Polyphase Squirrel-Cage Motors Corrected references in text and footnote 210.42.2 Polyphase Wound-Rotor Motors Corrected references in textSection II, Part 10 RatingsDC Motors10.66.2 Small Motors Except Those Rated 1/20 Horsepower and Less
44、 Corrected footnote references 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summary of Changes, Page 8Section II, Part 12 Ratings Tests and Performance AC Motors12.42.4 Temperature Rise for Air-Cooled Machines for Ambients Lower than 40 C, but Not Below 0 C (Added section)12.43.2
45、Temperature Rise for Air-Cooled Machines for Ambients Lower than 40 C, but Not Below 0 C (Added section)12.60 Efficiency Level of Premium Efficiency Electric Motors (Added throughout) Tables 12-12 through 12-14 (Added )12-13 Full-Load Efficiencies for 60 Hz Nema Premium Efficiency Electric Motors (A
46、dded ), edited table title12.62 Machine With Encapsulated or Sealed WindingsConformance Tests (Clarified text in b and d)Section II, Part 12 Ratings Tests and Performance DC Motors12.67.5 Temperature Rise for Air-Cooled Machines for Ambients Lower than 40 C, but Not Below 0 C Added sectionSection II
47、, Part 1515.41.2 Temperature Rise for Ambients Higher than 40C Added sectionSection III, Part 2020.8.1 Machines with a 1.0 Service Factor at Rated Load Corrected reference in footnote20.8.2 Machines with a 1.15 Service Factor at Service Factor Load Corrected reference in footnote20.18.1 Test for Sta
48、tor Which Can Be Submerged Clarified text in b and d20.18.2 Test for Stator Which Can Be Submerged Clarified text in b and dSection III, Part 2021.10.5 Temperature Rise for Air-Cooled Motors for Ambients Lower than 40 C, but Not Below 0 C Deleted lower ambients in a and b21.28.3 Unusual Service Cond
49、itions Corrected references in subclause b.21.37 Compressor Factors Corrected reference21.38 Surge Capabilities of AC Windings With Form-Wound Coils Corrected referenceSection III, Part 2323.9.3 Temperature Rise for Air-Cooled Machines for Ambients Lower than 40 C, but Not Below 0 C Added section 2016 National Electrical Manufacturers AssociationNEMA MG 1-2016Summary of Changes, Page 9Section III, Part 2424.40.3 Temperature Rise for Air-Cooled Machines for Ambients Lower than 40 C, but Not Below 0 C Added sectionSection IV, Part 3131.4.1.6 Temperatur
