10 C.F.R. Subpart B—Electric Motors
Title 10 - Energy
Source: 69 FR 61923, Oct. 21, 2004, unless otherwise noted.
This subpart contains energy conservation requirements for electric motors. It contains test procedures that EPCA requires DOE to prescribe, related requirements, energy conservation standards prescribed by EPCA, labeling rules, and compliance procedures. It also identifies materials incorporated by reference in this part. The following definitions apply for purposes of this subpart, and of subparts K through M of this part. Any words or terms not defined in this Section or elsewhere in this Part shall be defined as provided in Section 340 of the Act. Accreditation means recognition by an accreditation body that a laboratory is competent to test the efficiency of electric motors according to the scope and procedures given in Test Method B of Institute of Electrical and Electronics Engineers (IEEE) Standard 112–1996, Test Procedure for Polyphase Induction Motors and Generators, and Test Method (1) of CSA Standard C390–93, Energy Efficient Test Methods for Three-Phase Induction Motors. (Incorporated by reference, see §431.15) Accreditation body means an organization or entity that conducts and administers an accreditation system and grants accreditation. Accreditation system means a set of requirements to be fulfilled by a testing laboratory, as well as rules of procedure and management, that are used to accredit laboratories. Accredited laboratory means a testing laboratory to which accreditation has been granted. Alternative efficiency determination method or AEDM means, with respect to an electric motor, a method of calculating the total power loss and average full load efficiency. Average full load efficiency means the arithmetic mean of the full load efficiencies of a population of electric motors of duplicate design, where the full load efficiency of each motor in the population is the ratio (expressed as a percentage) of the motor's useful power output to its total power input when the motor is operated at its full rated load, rated voltage, and rated frequency. Basic model means, with respect to an electric motor, all units of a given type of electric motor (or class thereof) manufactured by a single manufacturer, and which have the same rating, have electrical characteristics that are essentially identical, and do not have any differing physical or functional characteristics which affect energy consumption or efficiency. For the purpose of this definition, “rating” means one of the 113 combinations of an electric motor's horsepower (or standard kilowatt equivalent), number of poles, and open or enclosed construction, with respect to which §431.25 prescribes nominal full load efficiency standards. Certificate of conformity means a document that is issued by a certification program, and that gives written assurance that an electric motor complies with the energy efficiency standard applicable to that motor, as specified in §431.25. Certification program means a certification system that determines conformity by electric motors with the energy efficiency standards prescribed by and pursuant to the Act. Certification system means a system, that has its own rules of procedure and management, for giving written assurance that a product, process, or service conforms to a specific standard or other specified requirements, and that is operated by an entity independent of both the party seeking the written assurance and the party providing the product, process or service. CSA means CSA International. Definite purpose motor means any motor designed in standard ratings with standard operating characteristics or standard mechanical construction for use under service conditions other than usual, such as those specified in National Electrical Manufacturers Association (NEMA) Standards Publication MG1–1993 (MG1), Motors and Generators, paragraph 14.03, “Unusual Service Conditions,” (Incorporated by reference, see §431.15) or for use on a particular type of application, and which cannot be used in most general purpose applications. Electric motor is defined as follows: (1) “Electric motor” means a machine which converts electrical power into rotational mechanical power and which: (i) Is a general purpose motor, including but not limited to motors with explosion-proof construction; (ii) Is a single speed, induction motor (MG1); (iii) Is rated for continuous duty (MG1) operation, or is rated duty type S1 (International Electrotechnical Commission (IEC)); (iv) Contains a squirrel-cage (MG1) or cage (IEC) rotor, and has foot-mounting, including foot-mounting with flanges or detachable feet; (v) Is built in accordance with NEMA T-frame dimensions (MG1), or IEC metric equivalents (IEC); (vi) Has performance in accordance with NEMA Design A (MG1) or B (MG1) characteristics, or equivalent designs such as IEC Design N (IEC); and (vii) Operates on polyphase alternating current 60-Hertz sinusoidal power, and: (A) Is rated 230 volts or 460 volts, or both, including any motor that is rated at multi-voltages that include 230 volts or 460 volts, or (B) Can be operated on 230 volts or 460 volts, or both. (2) Terms in this definition followed by the parenthetical “MG1” must be construed with reference to provisions in NEMA Standards Publication MG1–1993, Motors and Generators, with Revisions 1, 2, 3 and 4, (Incorporated by reference, see §431.15) as follows: (i) Section I, General Standards Applying to All Machines, Part 1, Referenced Standards and Definitions, paragraphs 1.16.1, 1.16.1.1, 1.17.1.1, 1.17.1.2, and 1.40.1 (Incorporated by reference, see §431.15) pertain to the terms “induction motor,” “squirrel-cage,” “NEMA Design A,” “NEMA Design B,” and “continuous duty” respectively; (ii) Section I, General Standards Applying to All Machines, Part 4, Dimensions, Tolerances, and Mounting, paragraph 4.01 and Figures 4–1, 4–2, 4–3, and 4–4 (Incorporated by reference, see §431.15) pertain to “NEMA T-frame dimensions;” (iii) Section II, Small (Fractional) and Medium (Integral) Machines, Part 11, Dimensions—AC and DC Small and Medium Machines, paragraphs 11.01.2, 11.31 (except the lines for frames 447T, 447TS, 449T and 449TS), 11.32, 11.34 (except the line for frames 447TC and 449TC, and the line for frames 447TSC and 449TSC), 11.35, and 11.36 (except the line for frames 447TD and 449TD, and the line for frames 447TSD and 449TSD), and Table 11–1, (Incorporated by reference, see §431.15) pertain to “NEMA T-frame dimensions;” and (iv) Section II, Small (Fractional) and Medium (Integral) Machines, Part 12, Tests and Performance—AC and DC Motors, paragraphs 12.35.1, 12.35.5, 12.38.1, 12.39.1, and 12.40.1, and Table 12–2, (Incorporated by reference, see §431.15) pertain both to “NEMA Design A” and “NEMA Design B.”) (3) Terms in this definition followed by the parenthetical “IEC” must be construed with reference to provisions in IEC Standards as follows: (i) IEC Standard 60034–1 (1996), Rotating electrical machines, Part 1: Rating and performance, with Amendment 1 (1997), Section 3: Duty, clause 3.2.1 and figure 1 (Incorporated by reference, see §431.15) pertain to “duty type S1”; (ii) IEC Standard 60050–411 (1996), International Electrotechnical Vocabulary Chapter 411: Rotating machines, sections 411–33–07 and 411–37–26, (Incorporated by reference, see §431.15) pertain to “cage”; (iii) IEC Standard 60072–1 (1991), Dimensions and output series for rotating electrical machines—Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080, clauses 2, 3, 4.1, 6.1, 7, and 10, and Tables 1, 2 and 4, (Incorporated by reference, see §431.15) pertain to “IEC metric equivalents” to “T-frame” dimensions; and (iv) IEC Standard 60034–12 (1980), Rotating electrical machines, Part 12: Starting performance of single-speed three-phase cage induction motors for voltages up to and including 660 V, with Amendment 1 (1992) and Amendment 2 (1995), clauses 1, 2, 3.1, 4, 5, and 6, and Tables I, II, and III, (Incorporated by reference, see §431.15) pertain to “IEC Design N.” Enclosed motor means an electric motor so constructed as to prevent the free exchange of air between the inside and outside of the case but not sufficiently enclosed to be termed airtight. General purpose motor means any motor which is designed in standard ratings with either: (1) Standard operating characteristics and standard mechanical construction for use under usual service conditions, such as those specified NEMA Standards Publication MG1–1993, paragraph 14.02, “Usual Service Conditions,” (Incorporated by reference, see §431.15) and without restriction to a particular application or type of application; or (2) Standard operating characteristics or standard mechanical construction for use under unusual service conditions, such as those specified in NEMA Standards Publication MG1–1993, paragraph 14.03, “Unusual Service Conditions,” (Incorporated by reference, see §431.15) or for a particular type of application, and which can be used in most general purpose applications. IEC means the International Electrotechnical Commission. IEEE means the Institute of Electrical and Electronics Engineers, Inc. NEMA means the National Electrical Manufacturers Association. Nominal full load efficiency means, with respect to an electric motor, a representative value of efficiency selected from Column A of Table 12–8, NEMA Standards Publication MG1–1993, (Incorporated by reference, see §431.15), that is not greater than the average full load efficiency of a population of motors of the same design. Open motor means an electric motor having ventilating openings which permit passage of external cooling air over and around the windings of the machine. Special purpose motor means any motor, other than a general purpose motor or definite purpose motor, which has special operating characteristics or special mechanical construction, or both, designed for a particular application. Total power loss means that portion of the energy used by an electric motor not converted to rotational mechanical power, expressed in percent. (a) General. We incorporate by reference the following test procedures into Subpart B of Part 431. The material listed in paragraph (b) of this section has been approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR 51. Any subsequent amendment to a standard by the standard-setting organization will not affect the DOE test procedures unless and until amended by DOE. Material is incorporated as it exists on the date of the approval and a notice of any change in the material will be published in the (b) List of standards incorporated by reference. (1) The following provisions of National Electrical Manufacturers Association Standards Publication MG1–1993, Motors and Generators, with Revisions 1, 2, 3 and 4, IBR approved for §§431.12; 431.31 and appendix B to subpart B of Part 431: (i) Section I, General Standards Applying to All Machines, Part 1, Referenced Standards and Definitions, paragraphs 1.16.1, 1.16.1.1, 1.17.1.1, 1.17.1.2, and 1.40.1, IBR approved for §431.12; (ii) Section I, General Standards Applying to All Machines, Part 4, Dimensions, Tolerances, and Mounting, paragraph 4.01 and Figures 4–1, 4–2, 4–3, and 4–4, IBR approved for §431.12; (iii) Section II, Small (Fractional) and Medium (Integral) Machines, Part 11, Dimensions—AC and DC Small and Medium Machines, paragraphs 11.01.2, 11.31 (except the lines for frames 447T, 447TS, 449T and 449TS), 11.32, 11.34 (except the line for frames 447TC and 449TC, and the line for frames 447TSC and 449TSC), 11.35, and 11.36 (except the line for frames 447TD and 449TD, and the line for frames 447TSD and 449TSD), and Table 11–1, IBR approved for §431.12; (iv) Section II, Small (Fractional) and Medium (Integral) Machines, Part 12, Tests and Performance—AC and DC Motors, paragraphs 12.35.1, 12.35.5, 12.38.1, 12.39.1, and 12.40.1, 12.58.1, and Tables 12–2 and 12–8, IBR approved for §431.12; and (v) Section II, Small (Fractional) and Medium (Integral) Machines, Part 14, Application Data—AC and DC Small and Medium Machines, paragraphs 14.02 and 14.03, IBR approved for §431.12. (2) Institute of Electrical and Electronics Engineers, Inc., Standard 112–1996, Test Procedure for Polyphase Induction Motors and Generators, Test Method B, Input-Output with Loss Segregation, and the correction to the calculation at item (28) in Section 10.2 Form B-Test Method B issued by IEEE on January 20, 1998. (Note: Paragraph 2 of appendix A to subpart B of Part 431 sets forth modifications to this Standard when it is used for purposes of Part 431 and EPCA, IBR approved for §§431.12; 431.19; 431.20; appendix B to subpart B of Part 431. (3) CSA International Standard C390–93, Energy Efficiency Test Methods for Three-Phase Induction Motors, Test Method (1), Input-Output Method With Indirect Measurement of the Stray-Load Loss and Direct Measurement of the Stator Winding (I2R), Rotor Winding (I2 R), Core and Windage-Friction Losses, IBR approved for §§431.12; 431.19; 431.20; appendix B to subpart B of Part 431. (4) International Electrotechnical Commission Standard 60034–1 (1996), Rotating electrical machines, Part 1: Rating and performance, with Amendment 1 (1997), Section 3: Duty, clause 3.2.1 and figure 1, IBR approved for §431.12. (5) International Electrotechnical Commission Standard 60050–411 (1996), International Electrotechnical Vocabulary Chapter 411: Rotating machines, sections 411–33–07 and 411–37–26, IBR approved for §431.12. (6) International Electrotechnical Commission Standard 60072–1 (1991), Dimensions and Output Series for Rotating Electrical Machines—Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080, clauses 2, 3, 4.1, 6.1, 7, and 10, and Tables 1, 2 and 4, IBR approved for §431.12. (7) International Electrotechnical Commission Standard 60034–12 (1980), Rotating Electrical Machines, Part 12: Starting performance of single-speed three-phase cage induction motors for voltages up to and including 660 V, with Amendment 1 (1992) and Amendment 2 (1995), clauses 1, 2, 3.1, 4, 5, and 6, and Tables I, II, and III, IBR approved for §431.12. (c) Inspection of standards. The standards incorporated by reference are available for inspection at: (1) National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.php; (2) U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Hearings and Dockets, “Test Procedures, Labeling, and Certification Requirements for Electric Motors,” Docket No. EE–RM–96–400, Forrestal Building, 1000 Independence Avenue, SW., Washington, DC. (d) Availability of standards. Standards incorporated by reference may be obtained from the following sources: (1) Copies of IEEE Standard 112–1996 can be obtained from the Institute of Electrical and Electronics Engineers, Inc., 445 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855–1331, 1–800–678-IEEE (4333); (2) Copies of NEMA Standards Publication MG1–1993 with Revisions 1, 2, 3, and 4, and copies of International Electrotechnical Commission standards can be obtained from Global Engineering Documents, 15 Inverness Way East, Englewood, Colorado 80112–5776, 1–800–854–7179 (within the U.S.) or (303) 397–7956 (international). (3) Copies of CSA International Standard C390–93 can be obtained from CSA International, 5060 Spectrum Way, Mississauga, Ontario, Canada L4W5N6, (416) 747–4044; (e) Reference standards—(1) General. The standards listed in this paragraph are referred to in the DOE procedures for testing laboratories, and recognition of accreditation bodies and certification programs but are not incorporated by reference. These sources are given here for information and guidance. (2) List of references. (i) National Voluntary Laboratory Accreditation Program Handbooks 150, “Procedures and General Requirements,” March 1994, and 150–10, “Efficiency of Electric Motors,” August 1995. National Voluntary Laboratory Accreditation Program, National Institute of Standards and Technology, Gaithersburg, MD 20899. (ii) ISO/IEC Guide 25, “General requirements for the competence of calibration and testing laboratories.” (iii) ISO Guide 27, “Guidelines for corrective action to be taken by a certification body in the event of either misapplication of its mark of conformity to a product, or products which bear the mark of the certification body being found to subject persons or property to risk.” (iv) ISO/IEC Guide 28, “General rules for a model third-party certification system for products.” (v) ISO/IEC Guide 58, “Calibration and testing laboratory accreditation systems—General requirements for operation and recognition.” (vi) ISO/IEC Guide 65, “General requirements for bodies operating product certification systems.” For purposes of 10 CFR Part 431 and EPCA, the test procedures for measuring the energy efficiency of an electric motor shall be the test procedures specified in appendix B to this subpart B. When a party determines the energy efficiency of an electric motor in order to comply with an obligation imposed on it by or pursuant to Part C of Title III of EPCA, 42 U.S.C. 6311–6316, this Section applies. This section does not apply to enforcement testing conducted pursuant to §431.192. (a) Provisions applicable to all electric motors—(1) General requirements. The average full load efficiency of each basic model of electric motor must be determined either by testing in accordance with §431.16 of this subpart, or by application of an alternative efficiency determination method (AEDM) that meets the requirements of paragraphs (a)(2) and (3) of this section, provided, however, that an AEDM may be used to determine the average full load efficiency of one or more of a manufacturer's basic models only if the average full load efficiency of at least five of its other basic models is determined through testing. (2) Alternative efficiency determination method. An AEDM applied to a basic model must be: (i) Derived from a mathematical model that represents the mechanical and electrical characteristics of that basic model, and (ii) Based on engineering or statistical analysis, computer simulation or modeling, or other analytic evaluation of performance data. (3) Substantiation of an alternative efficiency determination method. Before an AEDM is used, its accuracy and reliability must be substantiated as follows: (i) The AEDM must be applied to at least five basic models that have been tested in accordance with §431.16, and (ii) The predicted total power loss for each such basic model, calculated by applying the AEDM, must be within plus or minus ten percent of the mean total power loss determined from the testing of that basic model. (4) Subsequent verification of an AEDM. (i) Each manufacturer shall periodically select basic models representative of those to which it has applied an AEDM, and for each basic model selected shall either: (A) Subject a sample of units to testing in accordance with §§431.16 and 431.17(b)(2) by an accredited laboratory that meets the requirements of §431.18; (B) Have a certification body recognized under §431.20 certify its nominal full load efficiency; or (C) Have an independent state-registered professional engineer, who is qualified to perform an evaluation of electric motor efficiency in a highly competent manner and who is not an employee of the manufacturer, review the manufacturer's representations and certify that the results of the AEDM accurately represent the total power loss and nominal full load efficiency of the basic model. (ii) Each manufacturer that has used an AEDM under this section shall have available for inspection by the Department of Energy records showing: the method or methods used; the mathematical model, the engineering or statistical analysis, computer simulation or modeling, and other analytic evaluation of performance data on which the AEDM is based; complete test data, product information, and related information that the manufacturer has generated or acquired pursuant to paragraphs (a)(3) and (a)(4)(i) of this section; and the calculations used to determine the average full load efficiency and total power losses of each basic model to which the AEDM was applied. (iii) If requested by the Department, the manufacturer shall conduct simulations to predict the performance of particular basic models of electric motors specified by the Department, analyses of previous simulations conducted by the manufacturer, sample testing of basic models selected by the Department, or a combination of the foregoing. (5) Use of a certification program or accredited laboratory. (i) A manufacturer may have a certification program, that DOE has classified as nationally recognized under §431.20, certify the nominal full load efficiency of a basic model of electric motor, and issue a certificate of conformity for the motor. (ii) For each basic model for which a certification program is not used as described in paragraph (a)(5)(i) of this section, any testing of the motor pursuant to paragraphs (a)(1) through (3) of this section to determine its energy efficiency must be carried out in accordance with paragraph (b) of this section, in an accredited laboratory that meets the requirements of §431.18. (This includes testing of the basic model, pursuant to paragraph (a)(3)(i) of this section, to substantiate an AEDM.) (b) Additional testing requirements applicable when a certification program is not used—(1) Selection of basic models for testing. (i) Basic models must be selected for testing in accordance with the following criteria: (A) Two of the basic models must be among the five basic models with the highest unit volumes of production by the manufacturer in the prior year, or during the prior 12 calendar month period beginning in 1997,1 1 In identifying thse five basic models, any electric motor that does not comply with §431.25 shall be excluded from consideration. (B) The basic models should be of different horsepowers without duplication; (C) The basic models should be of different frame number series without duplication; and (D) Each basic model should be expected to have the lowest nominal full load efficiency among the basic models with the same rating (“rating” as used here has the same meaning as it has in the definition of “basic model”). (ii) In any instance where it is impossible for a manufacturer to select basic models for testing in accordance with all of these criteria, the criteria shall be given priority in the order in which they are listed. Within the limits imposed by the criteria, basic models shall be selected randomly. (2) Selection of units for testing. For each basic model selected for testing,2 2 Components of similar design may be substituted without requiring additional testing if the represented measures of energy consumption continue to satisfy the applicable sampling provision. (i) The average full-load efficiency of the sample X
where X where RE is the represented nominal full-load efficiency, and (ii) The lowest full-load efficiency in the sample Xmin, which is defined by shall satisfy the condition (3) Substantiation of an alternative efficiency determination method. The basic models tested under §431.17(a)(3)(i) must be selected for testing in accordance with paragraph (b)(1) of this section, and units of each such basic model must be tested in accordance with paragraph (b)(2) of this section by an accredited laboratory that meets the requirements of §431.18. (a) Testing pursuant to §431.17(a)(5)(ii) must be conducted in an accredited laboratory for which the accreditation body was: (1) The National Institute of Standards and Technology/National Voluntary Laboratory Accreditation Program (NIST/NVLAP); or (2) A laboratory accreditation body having a mutual recognition arrangement with NIST/NVLAP; or (3) An organization classified by the Department, pursuant to §431.19, as an accreditation body. (b) NIST/NVLAP is under the auspices of the National Institute of Standards and Technology (NIST) which is part of the U.S. Department of Commerce. NIST/NVLAP accreditation is granted on the basis of conformance with criteria published in 15 CFR Part 285, The National Voluntary Laboratory Accreditation Program Procedures and General Requirements. NIST Handbook 150–10, August 1995, presents the technical requirements of the National Voluntary Laboratory Accreditation Program for the Efficiency of Electric Motors field of accreditation. This handbook supplements NIST Handbook 150, National Voluntary Laboratory Accreditation Program Procedures and General Requirements, which contains 15 CFR Part 285 plus all general NIST/NVLAP procedures, criteria, and policies. Changes in NIST/NVLAP's criteria, procedures, policies, standards or other bases for granting accreditation, occurring subsequent to the initial effective date of 10 CFR Part 431, shall not apply to accreditation under this Part unless approved in writing by the Department of Energy. Information regarding NIST/NVLAP and its Efficiency of Electric Motors Program (EEM) can be obtained from NIST/NVLAP, 100 Bureau Drive, Mail Stop 2140, Gaithersburg, MD 20899–2140, telephone (301) 975–4016, or telefax (301) 926–2884. (a) Petition. To be classified by the Department of Energy as an accreditation body, an organization must submit a petition to the Department requesting such classification, in accordance with paragraph (c) of this section and §431.21. The petition must demonstrate that the organization meets the criteria in paragraph (b) of this section. (b) Evaluation criteria. To be classified as an accreditation body by the Department, the organization must meet the following criteria: (1) It must have satisfactory standards and procedures for conducting and administering an accreditation system and for granting accreditation. This must include provisions for periodic audits to verify that the laboratories receiving its accreditation continue to conform to the criteria by which they were initially accredited, and for withdrawal of accreditation where such conformance does not occur, including failure to provide accurate test results. (2) It must be independent of electric motor manufacturers, importers, distributors, private labelers or vendors. It cannot be affiliated with, have financial ties with, be controlled by, or be under common control with any such entity. (3) It must be qualified to perform the accrediting function in a highly competent manner. (4) It must be expert in the content and application of the test procedures and methodologies in IEEE Standard 112–1996 Test Method B and CSA Standard C390–93 Test Method (1), (Incorporated by reference, see §431.15) or similar procedures and methodologies for determining the energy efficiency of electric motors. (c) Petition format. Each petition requesting classification as an accreditation body must contain a narrative statement as to why the organization meets the criteria set forth in paragraph (b) of this section, must be signed on behalf of the organization by an authorized representative, and must be accompanied by documentation that supports the narrative statement. The following provides additional guidance: (1) Standards and procedures. A copy of the organization's standards and procedures for operating an accreditation system and for granting accreditation should accompany the petition. (2) Independent status. The petitioning organization should identify and describe any relationship, direct or indirect, that it has with an electric motor manufacturer, importer, distributor, private labeler, vendor, trade association or other such entity, as well as any other relationship it believes might appear to create a conflict of interest for it in performing as an accreditation body for electric motor testing laboratories. It should explain why it believes such relationship(s) would not compromise its independence as an accreditation body. (3) Qualifications to do accrediting. Experience in accrediting should be discussed and substantiated by supporting documents. Of particular relevance would be documentary evidence that establishes experience in the application of guidelines contained in the ISO/IEC Guide 58, Calibration and testing laboratory accreditation systems—General requirements for operation and recognition, as well as experience in overseeing compliance with the guidelines contained in the ISO/IEC Guide 25, General Requirements for the Competence of Calibration and Testing Laboratories. (4) Expertise in electric motor test procedures. The petition should set forth the organization's experience with the test procedures and methodologies in IEEE Standard 112–1996 Test Method B and CSA Standard C390–93 Test Method (1), (Incorporated by reference, see §431.15) and with similar procedures and methodologies. This part of the petition should include description of prior projects, qualifications of staff members, and the like. Of particular relevance would be documentary evidence that establishes experience in applying the guidelines contained in the ISO/IEC Guide 25, General Requirements for the Competence of Calibration and Testing Laboratories, to energy efficiency testing for electric motors. (d) Disposition. The Department will evaluate the petition in accordance with §431.21, and will determine whether the applicant meets the criteria in paragraph (b) of this section to be classified as an accrediting body. (a) Petition. For a certification program to be classified by the Department of Energy as being nationally recognized in the United States for the purposes of Section 345(c) of EPCA (“nationally recognized”), the organization operating the program must submit a petition to the Department requesting such classification, in accordance with paragraph (c) of this Section and §431.21. The petition must demonstrate that the program meets the criteria in paragraph (b) of this section. (b) Evaluation criteria. For a certification program to be classified by the Department as nationally recognized, it must meet the following criteria: (1) It must have satisfactory standards and procedures for conducting and administering a certification system, including periodic follow up activities to assure that basic models of electric motor continue to conform to the efficiency levels for which they were certified, and for granting a certificate of conformity. (2) It must be independent of electric motor manufacturers, importers, distributors, private labelers or vendors. It cannot be affiliated with, have financial ties with, be controlled by, or be under common control with any such entity. (3) It must be qualified to operate a certification system in a highly competent manner. (4) It must be expert in the content and application of the test procedures and methodologies in IEEE Standard 112–1996 Test Method B and CSA Standard C390–93 Test Method (1), (Incorporated by reference, see §431.15) or similar procedures and methodologies for determining the energy efficiency of electric motors. It must have satisfactory criteria and procedures for the selection and sampling of electric motors tested for energy efficiency. (c) Petition format. Each petition requesting classification as a nationally recognized certification program must contain a narrative statement as to why the program meets the criteria listed in paragraph (b) of this section, must be signed on behalf of the organization operating the program by an authorized representative, and must be accompanied by documentation that supports the narrative statement. The following provides additional guidance as to the specific criteria: (1) Standards and procedures. A copy of the standards and procedures for operating a certification system and for granting a certificate of conformity should accompany the petition. (2) Independent status. The petitioning organization should identify and describe any relationship, direct or indirect, that it or the certification program has with an electric motor manufacturer, importer, distributor, private labeler, vendor, trade association or other such entity, as well as any other relationship it believes might appear to create a conflict of interest for the certification program in operating a certification system for compliance by electric motors with energy efficiency standards. It should explain why it believes such relationship would not compromise its independence in operating a certification program. (3) Qualifications to operate a certification system. Experience in operating a certification system should be discussed and substantiated by supporting documents. Of particular relevance would be documentary evidence that establishes experience in the application of guidelines contained in the ISO/IEC Guide 65, General requirements for bodies operating product certification systems, ISO/IEC Guide 27, Guidelines for corrective action to be taken by a certification body in the event of either misapplication of its mark of conformity to a product, or products which bear the mark of the certification body being found to subject persons or property to risk, and ISO/IEC Guide 28, General rules for a model third-party certification system for products, as well as experience in overseeing compliance with the guidelines contained in the ISO/IEC Guide 25, General requirements for the competence of calibration and testing laboratories. (4) Expertise in electric motor test procedures. The petition should set forth the program's experience with the test procedures and methodologies in IEEE Standard 112–1996 Test Method B and CSA Standard C390–93 Test Method (1), (Incorporated by reference, see §431.15) and with similar procedures and methodologies. This part of the petition should include description of prior projects, qualifications of staff members, and the like. Of particular relevance would be documentary evidence that establishes experience in applying guidelines contained in the ISO/IEC Guide 25, General requirements for the competence of calibration and testing laboratories, to energy efficiency testing for electric motors. (d) Disposition. The Department will evaluate the petition in accordance with §431.21, and will determine whether the applicant meets the criteria in paragraph (b) of this section for classification as a nationally recognized certification program. (a) Filing of petition. Any petition submitted to the Department pursuant to §§431.19(a) or 431.20(a), shall be entitled “Petition for Recognition” (“Petition”) and must be submitted, in triplicate to the Assistant Secretary for Energy Efficiency and Renewable Energy, U.S. Department of Energy, Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 20585–0121. In accordance with the provisions set forth in 10 CFR 1004.11, any request for confidential treatment of any information contained in such a Petition or in supporting documentation must be accompanied by a copy of the Petition or supporting documentation from which the information claimed to be confidential has been deleted. (b) Public notice and solicitation of comments. DOE shall publish in the (c) Responsive statement by the petitioner. A petitioner may, within 10 working days of receipt of a copy of any comments submitted in accordance with paragraph (b) of this section, respond to such comments in a written statement submitted to the Assistant Secretary for Energy Efficiency and Renewable Energy. A petitioner may address more than one set of comments in a single responsive statement. (d) Public announcement of interim determination and solicitation of comments. The Assistant Secretary for Energy Efficiency and Renewable Energy shall issue an interim determination on the Petition as soon as is practicable following receipt and review of the Petition and other applicable documents, including, but not limited to, comments and responses to comments. The petitioner shall be notified in writing of the interim determination. DOE shall also publish in the (e) Public announcement of final determination. The Assistant Secretary for Energy Efficiency and Renewable Energy shall as soon as practicable, following receipt and review of comments and responsive statements on the interim determination, publish in the (f) Additional information. The Department may, at any time during the recognition process, request additional relevant information or conduct an investigation concerning the Petition. The Department's determination on a Petition may be based solely on the Petition and supporting documents, or may also be based on such additional information as the Department deems appropriate. (g) Withdrawal of recognition—(1) Withdrawal by the Department. If the Department believes that an accreditation body or certification program that has been recognized under §§431.19 or 431.20, respectively, is failing to meet the criteria of paragraph (b) of the section under which it is recognized, the Department will so advise such entity and request that it take appropriate corrective action. The Department will give the entity an opportunity to respond. If after receiving such response, or no response, the Department believes satisfactory correction has not been made, the Department will withdraw its recognition from that entity. (2) Voluntary withdrawal. An accreditation body or certification program may withdraw itself from recognition by the Department by advising the Department in writing of such withdrawal. It must also advise those that use it (for an accreditation body, the testing laboratories, and for a certification organization, the manufacturers) of such withdrawal. (3) Notice of withdrawal of recognition. The Department will publish in the
Title 10: Energy
PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT
Subpart B—Electric Motors
§ 431.11 Purpose and scope.
§ 431.12 Definitions.
Test Procedures, Materials Incorporated and Methods of Determining Efficiency
§ 431.15 Materials incorporated by reference.
§ 431.16 Test procedures for the measurement of energy efficiency.
§ 431.17 Determination of efficiency.
§ 431.18 Testing laboratories.
§ 431.19 Department of Energy recognition of accreditation bodies.
§ 431.20 Department of Energy recognition of nationally recognized certification programs.
§ 431.21 Procedures for recognition and withdrawal of recognition of accreditation bodies and certification programs.
Energy Conservation Standards
§ 431.25 Energy conservation standards and effective dates.
(a) Each electric motor manufactured (alone or as a component of another piece of equipment) after October 24, 1997, or in the case of an electric motor which requires listing or certification by a nationally recognized safety testing laboratory, after October 24, 1999, shall have a nominal full load efficiency of not less than the following:
---------------------------------------------------------------------------------------------------------------- Nominal full load efficiency ----------------------------------------------------------------------------- Motor horsepower/ standard Open motors (number of poles) Enclosed motors (number of poles) kilowatt equivalent ----------------------------------------------------------------------------- 6 4 2 6 4 2----------------------------------------------------------------------------------------------------------------1 / .75........................... 80.0 82.5 ........... 80.0 82.5 75.51.5 / 1.1......................... 84.0 84.0 82.5 85.5 84.0 82.52 / 1.5........................... 85.5 84.0 84.0 86.5 84.0 84.03 / 2.2........................... 86.5 86.5 84.0 87.5 87.5 85.55 / 3.7........................... 87.5 87.5 85.5 87.5 87.5 87.57.5 / 5.5......................... 88.5 88.5 87.5 89.5 89.5 88.510 / 7.5.......................... 90.2 89.5 88.5 89.5 89.5 89.515 / 11........................... 90.2 91.0 89.5 90.2 91.0 90.220 / 15........................... 91.0 91.0 90.2 90.2 91.0 90.225 / 18.5......................... 91.7 91.7 91.0 91.7 92.4 91.030 / 22........................... 92.4 92.4 91.0 91.7 92.4 91.040 / 30........................... 93.0 93.0 91.7 93.0 93.0 91.750 / 37........................... 93.0 93.0 92.4 93.0 93.0 92.460 / 45........................... 93.6 93.6 93.0 93.6 93.6 93.075 / 55........................... 93.6 94.1 93.0 93.6 94.1 93.0100 / 75.......................... 94.1 94.1 93.0 94.1 94.5 93.6125 / 90.......................... 94.1 94.5 93.6 94.1 94.5 94.5150 / 110......................... 94.5 95.0 93.6 95.0 95.0 94.5200 / 150......................... 94.5 95.0 94.5 95.0 95.0 95.0----------------------------------------------------------------------------------------------------------------
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(b) For purposes of determining the required minimum nominal full load efficiency of an electric motor that has a horsepower or kilowatt rating between two horsepowers or kilowattages listed consecutively in paragraph (a) of this section, each such motor shall be deemed to have a horsepower or kilowatt rating that is listed in paragraph (a) of this section. The rating that the motor is deemed to have shall be determined as follows: (1) A horsepower at or above the midpoint between the two consecutive horsepowers shall be rounded up to the higher of the two horsepowers; (2) A horsepower below the midpoint between the two consecutive horsepowers shall be rounded down to the lower of the two horsepowers, or (3) A kilowatt rating shall be directly converted from kilowatts to horsepower using the formula, 1 kilowatt = (1/0.746) horsepower, without calculating beyond three significant decimal places, and the resulting horsepower shall be rounded in accordance with paragraphs (b)(1) or (b)(2) of this section, whichever applies. (c) This section does not apply to definite purpose motors, special purpose motors, and those motors exempted by the Secretary. § 431.26 Preemption of State regulations.Any State regulation providing for any energy conservation standard, or other requirement with respect to the energy efficiency or energy use, of an electric motor that is not identical to a Federal standard in effect under this subpart is preempted by that standard, except as provided for in Section 345(a) and 327(b) and (c) of the Act. Labeling§ 431.30 Applicability of labeling requirements.The labeling rules in §431.31, established pursuant to Section 344 of EPCA, 42 U.S.C. 6315, apply only to electric motors manufactured after October 5, 2000. § 431.31 Labeling requirements.(a) Electric motor nameplate—(1) Required information. The permanent nameplate of an electric motor for which standards are prescribed in §431.25 must be marked clearly with the following information: (i) The motor's nominal full load efficiency (as of the date of manufacture), derived from the motor's average full load efficiency as determined pursuant to this subpart; and (ii) A Compliance Certification number (“CC number”) supplied by DOE to the manufacturer or private labeler, pursuant to §431.36(f), and applicable to that motor. Such CC number must be on the nameplate of a motor beginning 90 days after either: (A) The manufacturer or private labeler has received the number upon submitting a Compliance Certification covering that motor, or (B) The expiration of 21 days from DOE's receipt of a Compliance Certification covering that motor, if the manufacturer or private labeler has not been advised by DOE that the Compliance Certification fails to satisfy §431.36. (2) Display of required information. All orientation, spacing, type sizes, type faces, and line widths to display this required information shall be the same as or similar to the display of the other performance data on the motor's permanent nameplate. The nominal full load efficiency shall be identified either by the term “Nominal Efficiency” or “Nom. Eff.” or by the terms specified in paragraph 12.58.2 of NEMA MG1–1993, (Incorporated by reference, see §431.15) as for example “NEMA Nom. Eff. ____.” The DOE number shall be in the form “CC____. (3) Optional display. The permanent nameplate of an electric motor, a separate plate, or decalcomania, may be marked with the encircled lower case letters “ee”, for example, 
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or with some comparable designation or logo, if the motor meets the applicable standard prescribed in §431.25, as determined pursuant to this subpart, and is covered by a Compliance Certification that satisfies §431.36. (b) Disclosure of efficiency information in marketing materials. (1) The same information that must appear on an electric motor's permanent nameplate pursuant to paragraph (a)(1) of this section, shall be prominently displayed: (i) On each page of a catalog that lists the motor; and (ii) In other materials used to market the motor. (2) The “ee” logo, or other similar logo or designations, may also be used in catalogs and other materials to the same extent they may be used on labels under paragraph (a)(3) of this section. § 431.32 Preemption of State regulations.The provisions of §431.31 supersede any State regulation to the extent required by Section 327 of the Act. Pursuant to the Act, all State regulations that require the disclosure for any electric motor of information with respect to energy consumption, other than the information required to be disclosed in accordance with this part, are superseded. Certification§ 431.35 Applicability of certification requirements.Section 431.36 sets forth the procedures for manufacturers to certify that electric motors comply with the applicable energy efficiency standards set forth in this subpart. § 431.36 Compliance Certification.(a) General. Beginning April 26, 2003, a manufacturer or private labeler shall not distribute in commerce any basic model of an electric motor which is subject to an energy efficiency standard set forth in this subpart unless it has submitted to the Department a Compliance Certification certifying, in accordance with the provisions of this section, that the basic model meets the requirements of the applicable standard. The representations in the Compliance Certification must be based upon the basic model's energy efficiency as determined in accordance with the applicable requirements of this subpart. This means, in part, that either: (1) The representations as to the basic model must be based on use of a certification organization; or (2) Any testing of the basic model on which the representations are based must be conducted at an accredited laboratory. (b) Required contents—(1) General representations. Each Compliance Certification must certify that: (i) The nominal full load efficiency for each basic model of electric motor distributed is not less than the minimum nominal full load efficiency required for that motor by §431.25; (ii) All required determinations on which the Compliance Certification is based were made in compliance with the applicable requirements prescribed in this subpart; (iii) All information reported in the Compliance Certification is true, accurate, and complete; and (iv) The manufacturer or private labeler is aware of the penalties associated with violations of the Act and the regulations thereunder, and of 18 U.S.C. 1001 which prohibits knowingly making false statements to the Federal Government. (2) Specific data. (i) For each rating of electric motor (as the term “rating” is defined in the definition of basic model) which a manufacturer or private labeler distributes, the Compliance Certification must report the nominal full load efficiency, determined pursuant to §§431.16 and 431.17, of the least efficient basic model within that rating. (ii) The Compliance Certification must identify the basic models on which actual testing has been performed to meet the requirements of §431.17. (iii) The format for a Compliance Certification is set forth in appendix C of this subpart. (c) Optional contents. In any Compliance Certification, a manufacturer or private labeler may at its option request that DOE provide it with a unique Compliance Certification number (“CC number”) for any brand name, trademark or other label name under which the manufacturer or private labeler distributes electric motors covered by the Certification. Such a Compliance Certification must also identify all other names, if any, under which the manufacturer or private labeler distributes electric motors, and to which the request does not apply. (d) Signature and submission. A manufacturer or private labeler must submit the Compliance Certification either on its own behalf, signed by a corporate officer of the company, or through a third party (for example, a trade association or other authorized representative) acting on its behalf. Where a third party is used, the Compliance Certification must identify the official of the manufacturer or private labeler who authorized the third party to make representations on the company's behalf, and must be signed by a corporate official of the third party. The Compliance Certification must be submitted to the Department by certified mail, to Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Building Technologies (EE–2J), Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 20585–0121. (e) New basic models. For electric motors, a Compliance Certification must be submitted for a new basic model only if the manufacturer or private labeler has not previously submitted to DOE a Compliance Certification, that meets the requirements of this section, for a basic model that has the same rating as the new basic model, and that has a lower nominal full load efficiency than the new basic model. (f) Response to Compliance Certification; Compliance Certification Number (CC number)—(1) DOE processing of Certification. Promptly upon receipt of a Compliance Certification, the Department will determine whether the document contains all of the elements required by this section, and may, in its discretion, determine whether all or part of the information provided in the document is accurate. The Department will then advise the submitting party in writing either that the Compliance Certification does not satisfy the requirements of this section, in which case the document will be returned, or that the Compliance Certification satisfies this section. The Department will also advise the submitting party of the basis for its determination. (2) Issuance of CC number(s). (i) Initial Compliance Certification. When DOE advises that the initial Compliance Certification submitted by or on behalf of a manufacturer or private labeler is acceptable, either: (A) DOE will provide a single unique CC number, “CC____,” to the manufacturer or private labeler, and such CC number shall be applicable to all electric motors distributed by the manufacturer or private labeler, or (B) When required by paragraph (f)(3) of this section, DOE will provide more than one CC number to the manufacturer or private labeler. (ii) Subsequent Compliance Certification. When DOE advises that any other Compliance Certification is acceptable, it will provide a unique CC number for any brand name, trademark or other name when required by paragraph (f)(3) of this section. (iii) When DOE declines to provide a CC number as requested by a manufacturer or private labeler in accordance with §431.36(c), DOE will advise the requester of the reasons for such refusal. (3) Issuance of two or more CC numbers. (i) DOE will provide a unique CC number for each brand name, trademark or other label name for which a manufacturer or private labeler requests such a number in accordance with §431.36(c), except as follows. DOE will not provide a CC number for any brand name, trademark or other label name (A) For which DOE has previously provided a CC number, or (B) That duplicates or overlaps with other names under which the manufacturer or private labeler sells electric motors. (ii) Once DOE has provided a CC number for a particular name, that shall be the only CC number applicable to all electric motors distributed by the manufacturer or private labeler under that name. (iii) If the Compliance Certification in which a manufacturer or private labeler requests a CC number is the initial Compliance Certification submitted by it or on its behalf, and it distributes electric motors not covered by the CC number(s) DOE provides in response to the request(s), DOE will also provide a unique CC number that shall be applicable to all of these other motors. Appendix A to Subpart B of 10 CFR Part 431, Policy Statement for Electric Motors Covered Under the Energy Policy and Conservation ActThis is a reprint of a policy statement which was published on November 5, 1997 at 62 FR 59978. Policy Statement for Electric Motors Covered Under the Energy Policy and Conservation Act I. Introduction The Energy Policy and Conservation Act (EPCA), 42 U.S.C. 6311, et seq., establishes energy efficiency standards and test procedures for certain commercial and industrial electric motors manufactured (alone or as a component of another piece of equipment) after October 24, 1997, or, in the case of an electric motor which requires listing or certification by a nationally recognized safety testing laboratory, after October 24, 1999.1 1 The term “manufacture” means “to manufacture, produce, assemble or import.” EPCA §321(10). Thus, the standards apply to motors produced, assembled, imported or manufactured after these statutory deadlines. Section 340(13)(A) of EPCA defines the term “electric motor” based essentially on the construction and rating system in the National Electrical Manufacturers Association (NEMA) Standards Publication MG1. Sections 340(13)(B) and (c) of EPCA define the terms “definite purpose motor” and “special purpose motor,” respectively, for which the statute prescribes no efficiency standards. In its proposed rule to implement the EPCA provisions that apply to motors (61 FR 60440, November 27, 1996), DOE has proposed to clarify the statutory definition of “electric motor,” to mean a machine which converts electrical power into rotational mechanical power and which: (1) Is a general purpose motor, including motors with explosion-proof construction2 2 Section 342(b)(1) of EPCA recognizes that EPCA's efficiency standards cover “motors which require listing or certification by a nationally recognized safety testing laboratory.” This applies, for example, to explosion-proof motors which are otherwise general purpose motors. 3 Terms followed by the parenthetical “IEC” are referred to in the International Electrotechnical Commission (IEC) Standard 34–1. Such terms are included in DOE's proposed definition of “electric motor” because DOE believes EPCA's efficiency requirements apply to metric system motors that conform to IEC Standard 34, and that are identical or equivalent to motors constructed in accordance with NEMA MG1 and covered by the statute. Notwithstanding the clarification provided in the proposed rule, there still appears to be uncertainty as to which motors EPCA covers. It is widely understood that the statute covers “general purpose” motors that are manufactured for a variety of applications, and that meet EPCA's definition of “electric motor.” Many modifications, however, can be made to such generic motors. Motor manufacturers have expressed concern as to precisely which motors with such modifications are covered under the statute, and as to whether manufacturers will be able to comply with the statute by October 25, 1997 with respect to all of these covered motors. Consequently, motor manufacturers have requested that the Department provide additional guidance as to which types of motors are “electric motors,” “definite purpose motors,” and “special purpose motors” under EPCA. The policy statement that follows is based upon input from motor manufacturers and energy efficiency advocates, and provides such guidance. II. Guidelines for Determining Whether a Motor Is Covered by EPCA A. General EPCA specifies minimum nominal full-load energy efficiency standards for 1 to 200 horsepower electric motors, and, to measure compliance with those standards, prescribes use of the test procedures in NEMA Standard MG1 and Institute of Electrical and Electronics Engineers, Inc., (IEEE) Standard 112. In DOE's view, as stated in Assistant Secretary Ervin's letter of May 9, 1996, to NEMA's Malcolm O'Hagan, until DOE's regulations become effective, manufacturers can establish compliance with these EPCA requirements through use of competent and reliable procedures or methods that give reasonable assurance of such compliance. So long as these criteria are met, manufacturers may conduct required testing in their own laboratories or in independent laboratories, and may employ alternative correlation methods (in lieu of actual testing) for some motors. Manufacturers may also establish their compliance with EPCA standards and test procedures through use of third party certification or verification programs such as those recognized by Natural Resources Canada. Labeling and certification requirements will become effective only after DOE has promulgated a final rule prescribing such requirements. Motors with features or characteristics that do not meet the statutory definition of “electric motor” are not covered, and therefore are not required to meet EPCA requirements. Examples include motors without feet and without provisions for feet, and variable speed motors operated on a variable frequency power supply. Similarly, multi speed motors and variable speed motors, such as inverter duty motors, are not covered equipment, based on their intrinsic design for use at variable speeds. However, NEMA Design A or B motors that are single speed, meet all other criteria under the definitions in EPCA for covered equipment, and can be used with an inverter in variable speed applications as an additional feature, are covered equipment under EPCA. In other words, being suitable for use on an inverter by itself does not exempt a motor from EPCA requirements. Section 340(13)(F) of EPCA, defines a “small electric motor” as “a NEMA general purpose alternating current single-speed induction motor, built in a two-digit frame number series in accordance with NEMA Standards Publication MG 1–1987.” Section 346 of EPCA requires DOE to prescribe testing requirements and efficiency standards only for those small electric motors for which the Secretary determines that standards are warranted. The Department has not yet made such a determination. B. Electrical Features As noted above, the Department's proposed definition of “electric motor” provides in part that it is a motor that “operates on polyphase alternating current 60-Hertz sinusoidal power, and * * * can be operated on 230 volts or 460 volts, or both.” In DOE's view, “can be operated” implicitly means that the motor can be operated successfully. According to NEMA Standards Publication MG1–1993, paragraph 12.44, “Variations from Rated Voltage and Rated Frequency,” alternating-current motors must operate successfully under running conditions at rated load with a variation in the voltage or the frequency up to the following: Plus or minus 10 percent of rated voltage, with rated frequency for induction motors;4 4 For example, a motor that is rated at 220 volts should operate successfully on 230 volts, since 220 + .10(220) = 242 volts. A 208 volt motor, however, would not be expected to operate successfully on 230 volts, since 208 + .10(208) = 228.8 volts. 5 The Department understands that a motor that can operate at such voltage and frequency, based on variations defined for successful operation, will not necessarily perform in accordance with the industry standards established for operation at the motor's rated voltage and frequency. In addition, under the test procedures prescribed by EPCA, motors are to be tested at their rated values. Therefore, in DOE's view a motor that is not rated for 230 or 460 volts, or 60 Hertz, but that can be successfully operated at these levels, must meet the energy efficiency requirements at its rated voltage(s) and frequency. DOE also notes that when a motor is rated to include a wider voltage range that includes 230/460 volts, the motor should meet the energy efficiency requirements at 230 volts or 460 volts. NEMA Standards Publication MG1 categorizes electrical modifications to motors according to performance characteristics that include locked rotor torque, breakdown torque, pull-up torque, locked rotor current, and slip at rated load, and assigns design letters, such as Design A, B, C, D, or E, to identify various combinations of such electrical performance characteristics. Under Section 340(13)(A) of EPCA, electric motors subject to EPCA efficiency requirements include only motors that fall within NEMA “Design A and B * * * as defined in [NEMA] Standards Publication MG1–1987.” As to locked rotor torque, for example, MG1 specifies a minimum performance value for a Design A or B motor of a given speed and horsepower, and somewhat higher minimum values for Design C and D motors of the same speed and horsepower. The Department understands that, under MG1, the industry classifies a motor as Design A or B if it has a locked rotor torque at or above the minimum for A and B but below the minimum for Design C, so long as it otherwise meets the criteria for Design A or B. Therefore, in the Department's view, such a motor is covered by EPCA's requirements for electric motors. By contrast a motor that meets or exceeds the minimum locked rotor torque for Design C or D is not covered by EPCA. In sum, if a motor has electrical modifications that meet Design A or B performance requirements it is covered by EPCA, and if its characteristics meet Design C, D or E it is not covered. C. Size Motors designed for use on a particular type of application which are in a frame size that is one or more frame series larger than the frame size assigned to that rating by sections 1.2 and 1.3 of NEMA Standards Publication MG 13–1984 (R1990), “Frame Assignments for Alternating Current Integral-Horsepower Induction Motors,” are not, in the Department's view, usable in most general purpose applications. This is due to the physical size increase associated with a frame series change. A frame series is defined as the first two digits of the frame size designation. For example, 324T and 326T are both in the same frame series, while 364T is in the next larger frame series. Hence, in the Department's view, a motor that is of a larger frame series than normally assigned to that standard rating of motor is not covered by EPCA. A physically larger motor within the same frame series would be covered, however, because it would be usable in most general purpose applications. Motors built in a T-frame series or a T-frame size smaller than that assigned by MG 13–1984 (R1990) are also considered usable in most general purpose applications. This is because simple modifications can generally be made to fit a smaller motor in place of a motor with a larger frame size assigned in conformity with NEMA MG 13. Therefore, DOE believes that such smaller motors are covered by EPCA. D. Motors With Seals Some electric motors have seals to prevent ingress of water, dust, oil, and other foreign materials into the motor. DOE understands that, typically, a manufacturer will add seals to a motor that it manufactures, so that it will sell two motors that are identical except that one has seals and the other does not. In such a situation, if the motor without seals is “general purpose” and covered by EPCA's efficiency requirements, then the motor with seals will also be covered because it can still be used in most general purpose applications. DOE understands, however, that manufacturers previously believed motors with seals were not covered under EPCA, in part because IEEE Standard 112, “Test Procedure for Polyphase Induction Motors and Generators,” prescribed by EPCA, does not address how to test a motor with seals installed. The efficiency rating of such a motor, if determined with seals installed and when the motor is new, apparently would significantly understate the efficiency of the motor as operated. New seals are stiff, and provide friction that is absent after their initial break-in period. DOE understands that, after this initial period, the efficiency ratings determined for the same motor with and without seals would be virtually identical. To construe EPCA, therefore, as requiring such separate efficiency determinations would impose an unnecessary burden on manufacturers. In light of the foregoing, the Department believes that EPCA generally permits the efficiency of a motor with seals to be determined without the seals installed. Furthermore, notwithstanding the prior belief that such motors are not covered by EPCA, use of this approach to determining efficiency will enable manufacturers to meet EPCA's standards with respect to covered motors with seals by the date the standards go into effect on October 25, 1997. III. Discussion of How DOE Would Apply EPCA Definitions, Using the Foregoing Guidelines Using the foregoing guidelines, the attached matrix provides DOE's view as to which motors with common features are covered by EPCA. Because manufacturers produce many basic models that have many modifications of generic general purpose motors, the Department does not represent that the matrix is all-inclusive. Rather it is a set of examples demonstrating how DOE would apply EPCA definitions, as construed by the above guidelines, to various motor types. By extension of these examples, most motors currently in production, or to be designed in the future, could probably be classified. The matrix classifies motors into five categories, which are discussed in the following passages. Category I—For “electric motors” (manufactured alone or as a component of another piece of equipment) in Category I, DOE will enforce EPCA efficiency standards and test procedures beginning on October 25, 1997. The Department understands that some motors essentially are relatively simple modifications of generic general purpose motors. Modifications could consist, for example, of minor changes such as the addition of temperature sensors or a heater, the addition of a shaft extension and a brake disk from a kit, or changes in exterior features such as the motor housing. Such motors can still be used for most general purpose applications, and the modifications have little or no effect on motor performance. Nor do the modifications affect energy efficiency. Category II—For certain motors that are “definite purpose” according to present industry practice, but that can be used in most general purpose applications, DOE will generally enforce EPCA efficiency standards and test procedures beginning no later than October 25, 1999. General Statement EPCA does not prescribe standards and test procedures for “definite purpose motors.” Section 340(13)(B) of EPCA defines the term “definite purpose motor” as “any motor designed in standard ratings with standard operating characteristics or standard mechanical construction for use under service conditions other than usual or for use on a particular type of application and which cannot be used in most general purpose applications.” [Emphasis added.] Except, significantly, for exclusion of the italicized language, the industry definition of “definite purpose motor,” set forth in NEMA MG1, is identical to the foregoing. Category II consists of electric motors with horsepower ratings that fall between the horsepower ratings in Section 342(b)(1) of EPCA, thermally protected motors, and motors with roller bearings. As with motors in Category I, these motors are essentially modifications of generic general purpose motors. Generally, however, the modifications contained in these motors are more extensive and complex than the modifications in Category I motors. These Category II motors have been considered “definite purpose” in common industry parlance, but are covered equipment under EPCA because they can be used in most general purpose applications. According to statements provided during the January 15, 1997, Public Hearing, Tr. pgs. 238–239, Category II motors were, until recently, viewed by most manufacturers as definite purpose motors, consistent with the industry definition that did not contain the clause “which cannot be used in most general purpose applications.” Hence, DOE understands that many manufacturers assumed these motors were not subject to EPCA's efficiency standards. During the period prior and subsequent to the hearing, discussions among manufacturers resulted in a new understanding that such motors are general purpose under EPCA, since they can be used in most general purpose applications. Thus, the industry only recently recognized that such motors are covered under EPCA. Although the statutory definition adopted in 1992 contained the above-quoted definition of “definite purpose,” the delay in issuing regulations which embody this definition may have contributed to industry's delay in recognizing that these motors are covered. The Department understands that redesign and testing these motors in order to meet the efficiency standards in the statute may require a substantial amount of time. Given the recent recognition that they are covered, it is not realistic to expect these motors will be able to comply by October 25, 1997. A substantial period beyond that will be required. Moreover, the Department believes different manufacturers will need to take different approaches to achieving compliance with respect to these motors, and that, for a particular type of motor, some manufacturers will be able to comply sooner than others. Thus, the Department intends to refrain from taking enforcement action for two years, until October 25, 1999, with respect to motors with horsepower ratings that fall between the horsepower ratings in Section 342(b)(1) of EPCA, thermally protected motors, and motors with roller bearings. Manufacturers are encouraged, however, to manufacture these motors in compliance with EPCA at the earliest possible date. The following sets forth in greater detail, for each of these types of motors, the basis for the Department's policy to refrain from enforcement for two years. Also set forth is additional explanation of the Department's understanding as to why manufacturers previously believed intermediate horsepower motors were not covered by EPCA. Intermediate Horsepower Ratings Section 342(b)(1) of EPCA specifies efficiency standards for electric motors with 19 specific horsepower ratings, ranging from one through 200 horsepower. Each is a preferred or standardized horsepower rating as reflected in the table in NEMA Standards Publication MG1–1993, paragraph 10.32.4, Polyphase Medium Induction Motors. However, an “electric motor,” as defined by EPCA, can be built at other horsepower ratings, such as 6 horsepower, 65 horsepower, or 175 horsepower. Such motors, rated at horsepower levels between any two adjacent horsepower ratings identified in Section 342(b)(1) of EPCA will be referred to as “intermediate horsepower motors.” In the Department's view, efficiency standards apply to every motor that has a rating from one through 200 horsepower (or kilowatt equivalents), and that otherwise meets the criteria for an “electric motor” under EPCA, including an electric motor with an intermediate horsepower (or kW) rating. To date, these motors have typically been designed in conjunction with and supplied to a specific customer to fulfill certain performance and design requirements of a particular application, as for example to run a certain type of equipment. See the discussion in Section IV below on “original equipment” and “original equipment manufacturers.” In large part for these reasons, manufacturers believed intermediate horsepower motors to be “definite purpose motors” that were not covered by EPCA. Despite their specific uses, however, these motors are electric motors under EPCA when they are capable of being used in most general purpose applications. Features of a motor that are directly related to its horsepower rating include its physical size, and the ratings of its controller and protective devices. These aspects of a 175 horsepower motor, for example, which is an intermediate horsepower motor, must be appropriate to that horsepower, and would generally differ from the same aspects of 150 and 200 horsepower motors, the two standard horsepower ratings closest to 175. To re-design an existing intermediate horsepower electric motor so that it complies with EPCA could involve all of these elements of a motor's design. For example, the addition of material necessary to achieve EPCA's prescribed level of efficiency could cause the size of the motor to increase. The addition of magnetic material would invite higher inrush current that could cause an incorrectly sized motor controller to malfunction, or the circuit breaker with a standard rating to trip unnecessarily, or both. The Department believes motor manufacturers will require a substantial amount of time to redesign and retest each intermediate horsepower electric motor they manufacture. To the extent such intermediate horsepower electric motors become unavailable because motor manufacturers have recognized only recently that they are covered by EPCA, equipment in which they are incorporated would temporarily become unavailable also. Moreover, re-design of such a motor to comply with EPCA could cause changes in the motor that require re-design of the equipment in which the motor is used. For example, if an intermediate horsepower electric motor becomes larger, it might no longer fit in the equipment for which it was designed. In such instances, the equipment would have to be re-designed. Because these motors were previously thought not to be covered, equipment manufacturers may not have had sufficient lead time to make the necessary changes to the equipment without interrupting its production. With respect to intermediate horsepower motors, the Department intends to refrain from enforcing EPCA for a period of 24 months only as to such motor designs that were being manufactured prior to the date this Policy Statement was issued. The Department is concerned that small adjustments could be made to the horsepower rating of an existing electric motor, in an effort to delay compliance with EPCA, if it delayed enforcement as to all intermediate horsepower motors produced during the 24 month period. For example, a 50 horsepower motor that has a service factor of 1.15 could be renameplated as a 57 Thermally Protected Motors The Department understands that in order to redesign a thermally protected motor to improve its efficiency so that it complies with EPCA, various changes in the windings must be made which will require the thermal protector to be re-selected. Such devices sense the inrush and running current of the motor, as well as the operating temperature. Any changes to a motor that affect these characteristics will prevent the protector from operating correctly. When a new protector is selected, the motor must be tested to verify proper operation of the device in the motor. The motor manufacturer would test the locked rotor and overload conditions, which could take several days, and the results may dictate that a second selection is needed with additional testing. When the manufacturer has finished testing, typically the manufacturer will have a third party conduct additional testing. This testing may include cycling the motor in a locked-rotor condition to verify that the protector functions properly. This testing may take days or even weeks to perform for a particular model of motor. Since it was only recently recognized by industry that these motors are covered by EPCA, in the Department's view the total testing program makes it impossible for manufacturers to comply with the EPCA efficiency levels in thermally protected motors by October 25, 1997, especially since each different motor winding must be tested and motor winding/thermal protector combinations number in the thousands. Motors With Roller Bearings Motors with roller bearings fit within the definition of electric motor under the statute. However, because the IEEE Standard 112 Test Method B does not provide measures to test motors with roller bearings installed, manufacturers mistakenly believed such motors were not covered. Under IEEE Standard 112, a motor with roller bearings could only be tested for efficiency with the roller bearings removed and standard ball bearings installed as temporary substitutes. Then on the basis of the energy efficiency information gained from that test, the manufacturer may need to redesign the motor in order to comply with the statute. In this situation, the Department understands that testing, redesigning, and retesting lines of motors with roller bearings, to establish compliance, would be difficult and time consuming. Categories III, IV and V—Motors not within EPCA's definition of “electric motor,” and not covered by EPCA. Close-Coupled Pump Motors NEMA Standards Publication MG1–1993, with revisions one through three, Part 18, “Definite-Purpose Machines,” defines “a face-mounting close-coupled pump motor” as “a medium alternating-current squirrel-cage induction open or totally enclosed motor, with or without feet, having a shaft suitable for mounting an impeller and sealing device.” Paragraphs MG1–18.601–18.614 specify its performance, face and shaft mounting dimensions, and frame assignments that replace the suffix letters T and TS with the suffix letters JM and JP. The Department understands that such motors are designed in standard ratings with standard operating characteristics for use in certain close-coupled pumps and pumping applications, but cannot be used in non-pumping applications, such as, for example, conveyors. Consequently, the Department believes close-coupled pump motors are definite-purpose motors not covered by EPCA. However, a motor that meets EPCA's definition of “electric motor,” and which can be coupled to a pump, for example by means of a C-face or D-flange end shield, as depicted in NEMA Standards Publication MG1, Part 4, “Dimensions, Tolerances, and Mounting,” is covered. Totally-Enclosed Non-Ventilated (TENV) and Totally-Enclosed Air-Over (TEAO) Motors A motor designated in NEMA MG1–1993, paragraph MG1–1.26.1, as “totally-enclosed non-ventilated (IP54, IC410)”6 6 IP refers to the IEC Standard 34–5: Classification of degrees of protection provided by enclosures for rotating machines. IC refers to the IEC Standard 34–6: Methods of cooling rotating machinery. The IP and IC codes are referenced in the NEMA designations for TENV and TEAO motors in MG1–1993 Part 1, “Classification According to Environmental Protection and Methods of Cooling,” as a Suggested Standard for Future Design, since the TENV and TEAO motors conform to IEC Standards. Details of protection (IP) and methods of cooling (IC) are defined in MG1 Part 5 and Part 6, respectively. A motor designated in NEMA MG1–1993 as “totally-enclosed air-over (IP54, IC417)” is intended to be cooled by ventilation means external to (i.e., separate and independent from) the motor, such as a fan. The motor must be provided with the additional ventilation to prevent it from overheating. Consequently, neither the TENV motor nor the TEAO motor would be suitable for most general purpose applications, and, DOE believes they are definite-purpose motors not covered by EPCA. Integral Gearmotors An “integral gearmotor” is an assembly of a motor and a specific gear drive or assembly of gears, such as a gear reducer, as a unified package. The motor portion of an integral gearmotor is not necessarily a complete motor, since the end bracket or mounting flange of the motor portion is also part of the gear assembly and cannot be operated when separated from the complete gear assembly. Typically, an integral gearmotor is not manufactured to standard T-frame dimensions specified in NEMA MG1. Moreover, neither the motor portion, not the entire integral gearmotor, are capable of being used in most general purpose applications without significant modifications. An integral gearmotor is also designed for a specific purpose and can have unique performance characteristics, physical dimensions, and casing, flange and shafting configurations. Consequently, integral gearmotors are outside the scope of the EPCA definition of “electric motor” and are not covered under EPCA. However, an “electric motor,” as defined by EPCA, which is connected to a stand alone mechanical gear drive or an assembly of gears, such as a gear reducer connected by direct coupling, belts, bolts, a kit, or other means, is covered equipment under EPCA. IV. Electric Motors That Are Components in Certain Equipment The primary function of an electric motor is to convert electrical energy to mechanical energy which then directly drives machinery such as pumps, fans, or compressors. Thus, an electric motor is always connected to a driven machine or apparatus. Typically the motor is incorporated into a finished product such as an air conditioner, a refrigerator, a machine tool, food processing equipment, or other commercial or industrial machinery. These products are commonly known as “original equipment” or “end-use equipment,” and are manufactured by firms known as “original equipment manufacturers” (OEMs). Many types of motors used in original equipment are covered under EPCA. As noted above, EPCA prescribes efficiency standards to be met by all covered electric motors manufactured after October 24, 1997, except that covered motors which require listing or certification by a nationally recognized safety testing laboratory need not meet the standards until after October 24, 1999. Thus, for motors that must comply after October 24, 1997, once inventories of motors manufactured before the deadline have been exhausted, only complying motors would be available for purchase and use by OEMs in manufacturing original equipment. Any non-complying motors previously included in such equipment would no longer be available. The physical, and sometimes operational, characteristics of motors that meet EPCA efficiency standards normally differ from the characteristics of comparable existing motors that do not meet those standards. In part because of such differences, the Department is aware of two types of situations where strict application of the October 24, 1997, deadline could temporarily prevent the manufacture of, and remove from the marketplace, currently available original equipment. One such situation is where an original equipment manufacturer uses an electric motor as a component in end-use equipment that requires listing or certification by a nationally recognized safety testing laboratory, even though the motor itself does not require listing or certification. In some of these instances, the file for listing or certification specifies the particular motor to be used. No substitution could be made for the motor without review and approval of the new motor and the entire system by the safety testing laboratory. Consequently, a specified motor that does not meet EPCA standards could not be replaced by a complying motor without such review and approval. This re-listing or re-certification process is subject to substantial variation from one piece of original equipment to the next. For some equipment, it could be a simple paperwork transaction between the safety listing or certification organization and the OEM, taking approximately four to eight weeks to complete. But the process could raise more complex system issues involving redesign of the motor or piece of equipment, or both, and actual testing to assure that safety and performance criteria are met, and could take several months to complete. The completion time could also vary depending on the response time of the particular safety approval agency. Moreover, in the period immediately after October 24, the Department believes wholesale changes could occur in equipment lines when OEMs must begin using motors that comply with EPCA. These changes are likely to be concentrated in the period immediately after EPCA goes into effect on October 24, and if many OEMs seek to re-list or re-certify equipment at the same time, substantial delays in the review and approval process at the safety approval agencies could occur. For these reasons, the Department is concerned that certain end-user equipment that requires safety listing or certification could become unavailable in the marketplace, because an electric motor specifically identified in a listing or certification is covered by EPCA and will become unavailable, and the steps have not been completed to obtain safety approval of the equipment when manufactured with a complying motor. Second, a situation could exist where an electric motor covered by EPCA is constructed in a T-frame series or T-frame size that is smaller (but still standard) than that assigned by NEMA Standards Publication MG 13–1984 (R1990), sections 1.2 and 1.3, in order to fit into a restricted mounting space that is within certain end-use equipment. (Motors in IEC metric frame sizes and kilowatt ratings could also be involved in this type of situation.) In such cases, the manufacturer of the end-use equipment might need to redesign the equipment containing the mounting space to accommodate a larger motor that complies with EPCA. These circumstances as well could result in certain currently available equipment becoming temporarily unavailable in the market, since the smaller size motor would become unavailable before the original equipment had been re-designed to accommodate the larger, complying motor. The Department understands that many motor manufacturers and OEMs became aware only recently that the electric motors addressed in the preceding paragraphs were covered by EPCA. This is largely for the same reasons, discussed above, that EPCA coverage of Category II motors was only recently recognized. In addition, the Department understands that some motor manufacturers and original equipment manufacturers confused motors that themselves require safety listing or certification, which need not comply until October 25, 1999, with motors that, while not subject to such requirements, are included in original equipment that requires safety listing or certification. Consequently, motor manufacturers and original equipment manufacturers took insufficient action to assure that appropriate complying motors would be available for the original equipment involved, and that the equipment could accommodate such motors. OEMs involved in such situations may often be unable to switch to motors that meet EPCA standards in the period immediately following October 24. To mitigate any hardship to purchasers of the original equipment, the Department intends to refrain from enforcing EPCA in certain limited circumstances, under the conditions described below. Where a particular electric motor is specified in an approved safety listing or certification for a piece of original equipment, and the motor does not meet the applicable efficiency standard in EPCA, the Department's policy will be as follows: For the period of time necessary for the OEM to obtain a revised safety listing or certification for that piece of equipment, with a motor specified that complies with EPCA, but in no event beyond October 24, 1999, the Department would refrain from taking enforcement action under EPCA with respect to manufacture of the motor for installation in such original equipment. This policy would apply only where the motor has been manufactured and specified in the approved safety listing or certification prior to October 25, 1997. Where a particular electric motor is used in a piece of original equipment and manufactured in a smaller than assigned frame size or series, and the motor does not meet the applicable efficiency standard in EPCA, the Department's policy will be as follows: For the period of time necessary for the OEM to re-design the piece of equipment to accommodate a motor that complies with EPCA, but in no event beyond October 24, 1999, the Department would refrain from enforcing the standard with respect to manufacture of the motor for installation in such original equipment. This policy would apply only to a model of motor that has been manufactured and included in the original equipment prior to October 25, 1997. To allow the Department to monitor application of the policy set forth in the prior two paragraphs, the Department needs to be informed as to the motors being manufactured under the policy. Therefore, each motor manufacturer and OEM should jointly notify the Department as to each motor they will be manufacturing and using, respectively, after October 24, 1997, in the belief that it is covered by the policy. The notification should set forth: (1) The name of the motor manufacturer, and a description of the motor by type, model number, and date of design or production; (2) the name of the original equipment manufacturer, and a description of the application where the motor is to be used; (3) the safety listing or safety certification organization and the existing listing or certification file or document number for which re-listing or re-certification will be requested, if applicable; (4) the reason and amount of time required for continued production of the motor, with a statement that a substitute electric motor that complies with EPCA could not be obtained by an earlier date; and (5) the name, address, and telephone number of the person to contact for further information. The joint request should be signed by a responsible official of each requesting company, and sent to: U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Research and Standards, EE–41, Forrestal Building, 1000 Independence Avenue, SW., Room 1J–018, Washington, DC 20585–0121. The Department does not intend to apply this policy to any motor for which it does not receive such a notification. Moreover, the Department may use the notification, and make further inquiries, to be sure motors listed in the notification meet the criteria for application of the policy. This part of the Policy Statement will not apply to a motor in Category II, discussed above in Section III. Because up to 24 months is contemplated for compliance by Category II motors, the Department believes any issues that might warrant a delay of enforcement for such motors can be addressed during that time period. V. Further Information The Department intends to incorporate this Policy Statement into an appendix to its final rule to implement the EPCA provisions that apply to motors. Any comments or suggestions with respect to this Policy Statement, as well as requests for further information, should be addressed to the Director, Building Technologies, EE–2J, U.S. Department of Energy, Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 20585–0121. |
Examples of Many Common Features or Motor Modifications To Illustrate How the EPCA Definitions and DOE Guidelines Would Be Applied to Motor Categories: General Purpose; Definite Purpose; and Special Purpose---------------------------------------------------------------------------------------------------------------- Category\1\ Motor modification --------------------------------------------- Explanation I II III IV V----------------------------------------------------------------------------------------------------------------A. Electrical Modifications----------------------------------------------------------------------------------------------------------------1 Altitude............................. X ....... ....... ....... ....... General purpose up to a frame series change larger.2 Ambient.............................. X ....... ....... ....... ....... General purpose up to a frame series change larger.3 Multispeed........................... ....... ....... ....... ....... X EPCA applies to single speed only.4 Special Leads........................ X ....... ....... ....... ....... ..........................5 Special Insulation................... X ....... ....... ....... ....... ..........................6 Encapsulation........................ ....... ....... ....... X ....... Due to special construction.7 High Service Factor.................. X ....... ....... ....... ....... General purpose up to a frame series change larger.8 Space Heaters........................ X ....... ....... ....... ....... ..........................9 Wye Delta Start...................... X ....... ....... ....... ....... ..........................10 Part Winding Start.................. X ....... ....... ....... ....... ..........................11 Temperature Rise.................... X ....... ....... ....... ....... General purpose up to a frame series change larger.12 Thermally Protected................. ....... X ....... ....... ....... Requires retesting and third party agency approval.13 Thermostat/Thermistor............... X ....... ....... ....... ....... ..........................14 Special Voltages.................... ....... ....... ....... ....... X EPCA applies to motors operating on 230/460 voltages at 60 Hertz.15 Intermediate Horsepowers............ ....... X ....... ....... ....... Round horsepower according to 10 CFR 431.42 for efficiency.16 Frequency........................... ....... ....... ....... ....... X EPCA applies to motors operating on 230/460 voltages at 60 Hertz.17 Fungus/Trop Insulation.............. X ....... ....... ....... ....... ..........................----------------------------------------------------------------------------------------------------------------B. Mechanical Modifications----------------------------------------------------------------------------------------------------------------18 Special Balance..................... X ....... ....... ....... ....... ..........................19 Bearing Temp. Detector.............. X ....... ....... ....... ....... ..........................20 Special Base/Feet................... ....... ....... ....... ....... X Does not meet definition of T-frame.21 Special Conduit Box................. X ....... ....... ....... ....... ..........................22 Auxiliary Conduit Box............... X ....... ....... ....... ....... ..........................23 Special Paint/Coating............... X ....... ....... ....... ....... ..........................24 Drains.............................. X ....... ....... ....... ....... ..........................25 Drip Cover.......................... X ....... ....... ....... ....... ..........................26 Ground. Lug/Hole.................... X ....... ....... ....... ....... ..........................27 Screens on ODP Enclosure............ X ....... ....... ....... ....... ..........................28 Mounting F1,F2; W1-4; C1,2.......... X ....... ....... ....... ....... Foot-mounting, rigid base, and resilient base.----------------------------------------------------------------------------------------------------------------C. Bearings----------------------------------------------------------------------------------------------------------------29 Bearing Caps........................ X ....... ....... ....... ....... ..........................30 Roller Bearings..................... ....... X ....... ....... ....... Test with a standard bearing.31 Shielded Bearings................... X ....... ....... ....... ....... ..........................32 Sealed Bearings..................... X ....... ....... ....... ....... Test with a standard bearing.33 Thrust Bearings..................... ....... ....... ....... X ....... Special mechanical construction.34 Clamped Bearings.................... X ....... ....... ....... ....... ..........................35 Sleeve Bearings..................... ....... ....... ....... X ....... Special mechanical construction.----------------------------------------------------------------------------------------------------------------D. Special Endshields----------------------------------------------------------------------------------------------------------------36 C Face.............................. X ....... ....... ....... ....... As defined in NEMA MG-1.37 D Flange............................ X ....... ....... ....... ....... As defined in NEMA MG-1.38 Customer Defined.................... ....... ....... ....... X ....... Special design for a particular application.----------------------------------------------------------------------------------------------------------------E. Seals----------------------------------------------------------------------------------------------------------------39 Contact Seals....................... X ....... ....... ....... ....... Includes lip seals and taconite seals_test with seals removed.40 Non-Contact Seal.................... X ....... ....... ....... ....... Includes labyrinth and slinger seals_test with seals installed.----------------------------------------------------------------------------------------------------------------F. Shafts----------------------------------------------------------------------------------------------------------------41 Standard Shafts/NEMA Mg-1........... X ....... ....... ....... ....... Includes single and double, cylindrical, tapered, and short shafts.42 Non Standard Material............... X ....... ....... ....... ....... ..........................----------------------------------------------------------------------------------------------------------------G. Fans----------------------------------------------------------------------------------------------------------------43 Special Material.................... X ....... ....... ....... ....... ..........................44 Quiet Design........................ X ....... ....... ....... ....... ..........................----------------------------------------------------------------------------------------------------------------H. Other Motors----------------------------------------------------------------------------------------------------------------45 Washdown............................ X ....... ....... ....... ....... Test with seals removed.46 Close-coupled pump.................. ....... ....... X ....... ....... JM and JP frame assignments.47 Integral Gear Motor................. ....... ....... ....... ....... X Typically special mechanical design, and not a T-frame; motor and gearbox inseparable and operate as one system.48 Vertical_Normal Thrust.............. ....... ....... ....... ....... X EPCA covers foot-mounting.49 Saw Arbor........................... ....... ....... ....... X ....... Special electrical/ mechanical design.50 TENV................................ ....... ....... X ....... ....... Totally-enclosed non- ventilated not equipped for cooling (IP54, IC410).51 TEAO................................ ....... ....... X ....... ....... Totally-enclosed air-over requires airflow from external source (IP54, IC417).52 Fire Pump........................... X ....... ....... ....... ....... When safety certification is not required. See also EPCA § 342(b)(1).53 Non-continuous...................... ....... ....... ....... ....... X EPCA covers continuous ratings.54 Integral Brake Motor................ ....... ....... ....... X ....... Integral brake design factory built within the motor.----------------------------------------------------------------------------------------------------------------\1\ Category I_General purpose electric motors as defined in EPCA.Category II_Definite purpose electric motors that can be used in most general purpose applications as defined in EPCA.Category III_Definite purpose motors as defined in EPCA.Category IV_Special purpose motors as defined in EPCA.Category V_Outside the scope of ``electric motor'' as defined in EPCA.
Appendix B to Subpart B of Part 431—Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors1. Definitions. Definitions contained in §§431.2 and 431.12 are applicable to this appendix. 2. Test Procedures. Efficiency and losses shall be determined in accordance with NEMA MG1–1993 with Revisions 1 through 4, paragraph 12.58.1, “Determination of Motor Efficiency and Losses,” (Incorporated by reference, see §431.15) and either: (1) CSA International (or Canadian Standards Association) Standard C390–93 Test Method (1), (Incorporated by reference, see §431.15), Input-Output Method With Indirect Measurement of the Stray-Load Loss and Direct Measurement of the Stator Winding (I2 R), Rotor Winding (I2 R), Core and Windage-Friction Losses, or (2) IEEE Standard 112–1996 Test Method B, Input-Output With Loss Segregation, (Incorporated by reference, see §431.15) with IEEE correction notice of January 20, 1998, except as follows: (i) Page 8, subclause 5.1.1., Specified temperature, the introductory clause does not apply. Instead the following applies: The specified temperature used in making resistance corrections should be determined by one of the following (Test Method B only allows the use of preference (a) or (b).), which are listed in order of preference. (ii) Page 17, subclause 6.4.1.3., No-load test, the text does not apply. Instead, the following applies: See 5.3 including 5.3.3, the separation of core loss from friction and windage loss. Prior to making this test, the machine shall be operated at no-load until the input has stabilized. (iii) Page 40, subclause 8.6.3, Termination of test, the third sentence does not apply. Instead, the following applies: For continuous rated machines, the temperature test shall continue until there is 1 °C or less change in temperature rise over a 30-minute time period. (iv) Page 47, at the top of 10.2 form B, immediately after the line that reads “Rated Load Heat Run Stator Winding Resistance Between Terminals,” the following additional line applies: Temperature for Resistance Correction (ts) = − °C (See 6.4.3.2). (v) Page 47, at the bottom of 10.2 Form B, after the first sentence to footnote tt, the following additional sentence applies: The values for ts and tt shall be based on the same method of temperature measurement, selected from the four methods in subclause 8.3. (vi) Page 47, at the bottom of 10.2 Form B, below the footnotes and above “Summary of Characteristics,” the following additional note applies: (vii) Page 48, item (22), the torque constants “k = 9.549 for torque, in N·m” and “k = 7.043 for torque, in 1bf·ft” do not apply. Instead, the following applies: “k2 = 9.549 for torque, in N·m” and “k2 = 7.043 for torque, in 1bf·ft.” (viii) Page 48, at the end of item (27), the following additional reference applies: “See 6.4.3.2.” (ix) Page 48, item (29). “See 4.3.2.2, Eq. 4,” does not apply. Instead the following applies: Is equal to (10)·[k1 + (4) − (5) + 25 °C] / [k1 + (7)], see 6.4.3.3.” 3. Amendments to test procedures. Any revision to IEEE Standard 112–1996 Test Method B with correction notice of January 20, 1998, to NEMA Standards Publication MG1–1993 with Revisions 1 through 4, or to CSA Standard C390–93 Test Method (1), subsequent to promulgation of this appendix B, shall not be effective for purposes of test procedures required under Part 431 and this appendix B, unless and until Part 431 and this appendix B are amended. Appendix C to Subpart B of Part 431—Compliance CertificationCertification of Compliance With Energy Efficiency Standards for Electric Motors (Office of Management and Budget Control Number: 1910–5104. Expires 09/30/2007) 1. Name and Address of Company (the “company”): ________________________________________ ____________________ ____________________ 2. Name(s) to be Marked on Electric Motors to Which this Compliance Certification Applies: ________________________________________ ____________________ ____________________ 3. If manufacturer or private labeler wishes to receive a unique Compliance Certification number for use with any particular brand name, trademark, or other label name, fill out the following two items: A. List each brand name, trademark, or other label name for which the company requests a Compliance Certification number: ________________________________________ ____________________ B. List other name(s), if any, under which the company sells electric motors (if not listed in item 2 above): ________________________________________ ____________________ Submit by Certified Mail to: U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies (EE–2J), Forrestal Building, 1000 Independence Avenue, SW., Washington, DC 20585–0121. This Compliance Certification reports on and certifies compliance with requirements contained in 10 CFR Part 431 (Energy Conservation Program for Certain Commercial and Industrial Equipment) and Part C of the Energy Policy and Conservation Act (Pub. L. 94–163), and amendments thereto. It is signed by a responsible official of the above named company. Attached and incorporated as part of this Compliance Certification is a Listing of Electric Motor Efficiencies. For each rating of electric motor* for which the Listing specifies the nominal full load efficiency of a basic model, the company distributes no less efficient basic model with that rating and all basic models with that rating comply with the applicable energy efficiency standard. *For this purpose, the term “rating” means one of the 113 combinations of an electric motor's horsepower (or standard kilowatt equivalent), number of poles, and open or enclosed construction, with respect to which §431.25 of 10 CFR Part 431 prescribes nominal full load efficiency standards. Person to Contact for Further Information: Name:____________________Address:____________________ ____________________ ____________________ ____________________ Telephone Number:____________________ Facsimile Number:____________________ If any part of this Compliance Certification, including the Attachment, was prepared by a third party organization under the provisions of 10 CFR 431.36, the company official authorizing third party representations: Name:____________________Address:____________________ ____________________ ____________________ ____________________ Telephone Number:____________________ Facsimile Number:____________________ Third Party Organization Officially Acting as Representative: Third Party Organization:____________________Responsible Person at that Organization:____________________ Address:____________________ ____________________ ____________________ ____________________ Telephone Number:____________________ Facsimile Number:____________________ All required determinations on which this Compliance Certification is based were made in conformance with the applicable requirements in 10 CFR Part 431, subpart B. All information reported in this Compliance Certification is true, accurate, and complete. The company is aware of the penalties associated with violations of the Act and the regulations thereunder, and is also aware of the provisions contained in 18 U.S.C. 1001, which prohibits knowingly making false statements to the Federal Government. Signature:____________________Date:____________________ Name:____________________ Title:____________________ Firm or Organization:____________________ Attachment to Certification of Compliance With Energy Efficiency Standards for Electric Motors: Listing of Electric Motor Efficiencies Date:____________________Name of Company:____________________ ____________________ |
---------------------------------------------------------------------------------------------------------------- Rating of electric motor Least efficient------------------------------------------------------------------------------- basic Nominal full Open or enclosed model_(model load efficiency Motor horsepower / kilowatts Number of poles motor numbers(s))----------------------------------------------------------------------------------------------------------------1 or .75........................ 6....................... Open.............. ______ ______1 or .75........................ 4....................... Open.............. ______ ______1 or .75........................ 6....................... Enclosed.......... ______ ______1 or .75........................ 4....................... Enclosed.......... ______ ______1 or .75........................ 2....................... Enclosed.......... ______ ______1.5 or 1.1...................... 6....................... Open.............. ______ ______1.5 or 1.1...................... 4....................... Open.............. ______ ______1.5 or 1.1...................... 2....................... Open.............. ______ ______1.5 or 1.1...................... 6....................... Enclosed.......... ______ ______1.5 or 1.1...................... 4....................... Enclosed.......... ______ ______1.5 or 1.1...................... 2....................... Enclosed.......... ______ ______ ........................ .................. ______ ______Etc............................. Etc..................... Etc............... ______ ______----------------------------------------------------------------------------------------------------------------Note: Place an asterisk beside each reported nominal full load efficiency that is determined by actual testing rather than by application of an alternative efficiency determination method. Also list below additional basic models that were subjected to actual testing.Basic Model means all units of a given type of electric motor (or class thereof) manufactured by a single manufacturer, and which (i) have the same rating, (ii) have electrical design characteristics that are essentially identical, and (iii) do not have any differing physical or functional characteristics that affect energy consumption or efficiency.Rating means one of the 113 combinations of an electric motor's horsepower (or standard kilowatt equivalent), number of poles, and open or enclosed construction, with respect to which § 431.25 of 10 CFR Part 431 prescribes nominal full load efficiency standards.
Models Actually Tested and Not Previously Identified------------------------------------------------------------------------ Rating of electric motor-------------------------------------------- Basic model(s) Nominal Motor power (model full load output (e.g. 1 Number Open or number(s)) efficiency hp or .75 kW) of poles enclosed motor------------------------------------------------------------------------ ______ ___ ______ ______ ___ ______ ___ ______ ______ ___ ______ ___ ______ ______ ___ ______ ___ ______ ______ ___ ______ ___ ______ ______ ___ Etc. Etc. Etc. Etc. Etc.------------------------------------------------------------------------
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