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Federal Register / Vol. 86, No. 1 / Monday, January 4, 2021 / Rules and Regulations
In preparation for the April 2019
NOPR, DOE reviewed each of the referenced industry standards to determine whether they still represent the most current procedures developed by industry. On February 14, 2018, IEEE
published an updated edition of the IEEE 112 standard. The other referenced industry standards incorporated into DOEs test procedure developed by CSA
and IEEE remain current or have been reaffirmed without changes.13 This final rule maintains the references to IEEE
1142010, CSA C39010, and CSA
C74709. As discussed in Section III.B.1
of this document, DOE is updating the reference to IEEE 112 to reference the updated IEEE 1122017 standard. As discussed in section III.B.2, DOE is also incorporating by reference IEC 60034
21:2014 as an additional alternative test procedure for small electric motors and electric motors. IEEE 1122017 and IEC 6003421:2014 are discussed in the following paragraphs.
1. IEEE 1122017
On February 14, 2018, IEEE approved IEEE 1122017, IEEE Standard Test Procedure for Polyphase Induction Motors and Generators. DOE
conducted a full review of that revised testing standard to identify any changes made relative to the industry test methods that are incorporated by reference from IEEE 1122004. In the April 2019 NOPR, DOE highlighted the following changes between the 2004 and 2017 version: 1 Section 4, Measurements of IEEE 1122017, includes several updates regarding instrument selection and measurement accuracy; and 2 the method for calculating core loss used in Section 6.4, Efficiency Test Method BInputOutput with Loss Segregation of IEEE
1122017 was revised and aligned with the efficiency test method specified in CSA C39010, currently incorporated by reference at 10 CFR 431.443b2. 84 FR
17004, 17011. DOE further noted that this change also aligns with the Method 211B approach of IEC 600342
1:2014. Id. In the April 2019 NOPR, DOE noted that the revisions in the 2017
version aligned measurement, calculation methods, and instrumentation requirements with industry practice, and that the differences between the IEEE 1122004
and IEEE 1122017 calculation methods were minimal, with both tests resulting in an accurate and similar measurement of efficiency. 84 FR 17004, 17011
17012. DOE noted that, in the small electric motor and electric motor final 13 Both CSA C74709 and CSA C39010 have been reaffirmed in 2014 and 2015, respectively.

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rule published on May 4, 2012, commenters indicated the difference in efficiency outcome between IEEE 112
2004 and CSA C39010 to be within 0.2
percent. 84 FR 17004, 17012 citing 77
FR 26608, 26622. DOE stated that the core loss calculation in IEEE 1122017
aligns with the core loss calculation in CSA C39010, and that based on this comparison of IEEE 1122004 and CSA
C39010, the impact of the core loss calculation between IEEE 1122004 and IEEE 1122017 should be no greater than 0.2 percent. 84 FR 17004, 17012.
To avoid any potential need to retest motors that have relied on IEEE 112
2004 for purposes of compliance, DOE
proposed to incorporate the IEEE 112
2017 test method as an alternative to the test methods incorporated in the current test procedure, while retaining the currently incorporated IEEE 1122004
method, and requested data comparing the results of the IEEE 1122004 and IEEE 1122017. 84 FR 17004, 17012.
In response to the April 2019 NOPR, NEMA supported updating the reference to IEEE 112 to its latest 2017 version and noted that IEEE 1122017 Method B resolves previous technical differences between IEEE 1122004
Method B and CSA C39010. NEMA
added that both versions of IEEE 112 led to equivalent results. NEMA, No. 84 at p. 2 The Efficiency Advocates supported referencing the latest version of IEEE 112 and urged DOE not to continue referencing the older version since referencing two different procedures introduces additional variability into the DOE test procedure.
Efficiency Advocates, No. 87 at p. 2
DOE has determined that IEEE 112
2017 will result in an accurate and similar measurement of efficiency as compared to IEEE 1122004. Given the expected variation of tested efficiency values for small electric motors and electric motors due to manufacturing and material differences, any minor differences between IEEE 1122004 and IEEE 1122017 will not result in any significant change in overall energy efficiency test results. This determination is consistent with DOEs prior comparison of IEEE 1122004 and CSA C39010, as affirmed by NEMAs comment. Given the functional equivalency of testing under IEEE 112
2004 and IEEE 1122017, DOE is incorporating IEEE 1122017 in place of IEEE 1122004. Referencing only the most recent version of IEEE 112 avoids the potential concerns identified by the Efficiency Advocates. Additionally, incorporating this update further aligns DOEs test procedures with current industry practice and reduces manufacturer test burden, while
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ensuring that motors that have demonstrated compliance under IEEE
1122004 methods do not require retesting see section III.F.1 for more details.
Therefore, the updates to IEEE 112
2017 are in the following sections of the CFR as amended by this final rule:
For small electric motors, 10 CFR
431.443 Materials incorporated by reference, paragraph d1; 10 CFR
431.444 Test procedures for the measurement of energy efficiency, paragraphs b1vi, b3i and b4i; and 10 CFR 431.447
Department of Energy recognition of nationally recognized certification programs, paragraphs b4 and c4.
For electric motors, 10 CFR 431.12
Definitions the definition for accreditation; 10 CFR 431.15
Materials incorporated by reference, paragraph d1; 10 CFR 431.19
Department of Energy recognition of accreditation bodies, paragraphs b4
and c4; 10 CFR 431.20 Department of Energy recognition of nationally recognized certification programs, paragraphs b4 and c4; and Appendix B to Subpart B of Part 431
Uniform test method for measuring nominal full load efficiency of electric motors, Sections 0d,14 23, 3.
2. IEC 6003421:2014
As discussed in section I.B, NEMA
and UL independently submitted written petitions requesting that certain portions of IEC 6003421:2014 be adopted as a permitted alternative test method for small electric motors and electric motors. Specifically, NEMAs petition requested that DOE incorporate IEC 6003421:2014 Method 211B 15
as an alternative to IEEE 1122004 Test Method B and CSA C39010, which are currently referenced in Appendix B.
NEMA, No. 28.2 at p. 1 UL requested that 1 IEC 6003421:2014 Method 2
11B be approved for Appendix B and section 431.444 of 10 CFR part 431 as an alternative to IEEE 1122004 Test 14 Appendix B to subpart B of part 431 was reorganized to include a new section 0 in this final rule. Section 0 details the applicability of the industry testing standards incorporated by reference and provides the specific provisions of the industry testing standards that are applicable to the DOE test procedure and the sections of the DOE test procedure in which the industry testing standards are incorporated. Because of this re-organization, the instruction in section 3 of Appendix B to subpart B of part 431 regarding the applicability of subsequent editions of the incorporated industry testing standards was duplicative to those in section 0, and therefore removed in this final rule.
15 IEC 6003421:2014 Method 211B 2014, Rotating Electrical MachinesPart 21: Standard methods for determining losses and efficiency from tests excluding machines for traction vehicles, Summation of losses, additional load losses according to the method of residual loss.

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