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e-CFR data is current as of March 4, 2021

Amendment


10 CFR--PART 431

View Printed Federal Register page 86 FR 22 in PDF format.

Amendment(s) published January 4, 2021, in 86 FR 22

Effective Dates: Feb. 3, 2021

6. Appendix B to subpart B of part 431 is amended by:

a. Removing the introductory note;

b. Adding Section 0;

c. Revising Section 2;

d. Removing Section 3;

e. Redesignating Sections 4, 4.1,4.2, 4.3, 4.4, 4.5, 4.6, 4.7, and 4.8 as Sections 3, 3.1, 3.2, 3.4, 3.5, 3.6, 3.7, and 3.8 respectively;

f. Revising newly redesignated Section 3; and

g. In newly redesignated Section 3.8, remove “IEEE 112 (Test Method B)” at each occurrence and add in its place, “IEEE 112-2017 Test Method B.”

The additions and revisions read as follows:

Appendix B to Subpart B of Part 431—Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors

0. Incorporation by Reference

(a) In §431.15, DOE incorporated by reference the entire standard for CSA C390-10, IEC 60034-1:2010, IEC 60034-2-1:2014, IEC 60051-1:2016, and IEEE 112-2017; however, only enumerated provisions of those documents are applicable as follows:

(i) CSA C390-10:

(1) Section 1.3 “Scope,” as specified in section 2(1) of this appendix;

(2) Section 3.1 “Definitions,” as specified in section 2(1) of this appendix;

(3) Section 5 “General test requirements—Measurements,” as specified in section 2(1) of this appendix;

(4) Section 7 “Test method,” as specified in section 2(1) of this appendix;

(5) Table 1 “Resistance measurement time delay,” as specified in section 2(1) of this appendix;

(6) Annex B “Linear regression analysis,” as specified in section 2(1) of this appendix; and

(7) Annex C “Procedure for correction of dynamometer torque readings” as specified in section 2(1) of this appendix.

(ii) IEC 60034-1:2010:

(1) Section 7.2 as specified in section 2(2) of this appendix;

(2) Section 8.6.2.3.3 as specified in section 2(2) of this appendix; and

(3) Table 5 as specified in section 2(2) of this appendix.

(iii) IEC 60034-2-1:2014:

(1) Method 2-1-1B as specified in section 2(2) and section 3, of this appendix;

(2) Section 3 “Terms and definitions” as specified in section 2(2) of this appendix;

(3) Section 4 “Symbols and abbreviations” as specified in section 2(2) of this appendix;

(4) Section 5 “Basic requirements” as specified in section 2(2) of this appendix; and

(5) Section 6.1.3 “Method 2-1-1B—Summation of losses, additional load losses according to the method of residual losses” as specified in section 2(2) of this appendix.

(iv) IEEE 112-2017:

(1) Test Method B, Input-Output With Loss Segregation as specified in section 2(3), section 3, and section 3.8 of this appendix;

(2) Section 3 “General” as specified in section 2(3) of this appendix;

(3) Section 4 “Measurements” as specified in section 2(3) of this appendix;

(4) Section 5 “Machine losses and tests for losses” as specified in section 2(3) of this appendix;

(5) Section 6.1 “General” as specified in section 2(3) of this appendix;

(6) Section 6.4 “Efficiency test method B—Input-output with loss segregation” as specified in section 2(3) of this appendix; and

(7) Section 9.4 “Form B—Method B”, and Section 9.5 “Form B2—Method B calculations” as specified in section 2(3) of this appendix.

(b) In §431.15, DOE incorporated by reference the following enumerated provisions of NEMA MG 1-2009:

(i) Paragraph 12.58.1, “Determination of Motor Efficiency and Losses” as specified in the introductory paragraph to section 2 of this appendix, and

(ii) [Reserved]

(c) In cases where there is a conflict, the language of this appendix takes precedence over those documents. Any subsequent amendment to a referenced document by the standard-setting organization will not affect the test procedure in this appendix, unless and until the test procedure is 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 Federal Register.

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2. Test Procedures

Efficiency and losses must be determined in accordance with NEMA MG 1-2009 (incorporated by reference, see §431.15), paragraph 12.58.1, “Determination of Motor Efficiency and Losses,” and one of the following testing methods:

(1) CSA C390-10 (incorporated by reference, see §431.15), Section 1.3 “Scope”, Section 3.1 “Definitions”, Section 5 “General test requirements—Measurements”, Section 7 “Test method”, Table 1 “Resistance measurement time delay”, Annex B “Linear regression analysis” and Annex C “Procedure for correction of dynamometer torque readings.”

(2) IEC 60034-2-1:2014 (incorporated by reference, see §431.15), Method 2-1-1B, Section 3 “Terms and definitions”, Section 4 “Symbols and abbreviations”, Section 5 “Basic requirements”, Section 6.1.3 “Method 2-1-1B—Summation of losses, additional load losses according to the method of residual losses.” The supply voltage shall be in accordance with section 7.2 of IEC 60034-1:2010 (incorporated by reference, see §431.15). The measured resistance at the end of the thermal test shall be determined in a similar way to the extrapolation procedure described in section 8.6.2.3.3 of IEC 60034-1:2010, using the shortest possible time instead of the time interval specified in Table 5 therein, and extrapolating to zero. The measuring instruments for electrical quantities shall have the equivalent of an accuracy class of 0,2 in case of a direct test and 0,5 in case of an indirect test in accordance with IEC 60051-1:2016 (incorporated by reference, see §431.15), or

(3) IEEE 112-2017, (incorporated by reference, see §431.15), Test Method B, Input-Output With Loss Segregation, Section 3 “General”, Section 4 “Measurements”, Section 5 “Machine losses and tests for losses”, Section 6.1 “General”, Section 6.4 “Efficiency test method B—Input-output with loss segregation”, Section 9.4 “Form B—Method B”, and Section 9.5 “Form B2—Method B calculations.”

3. Procedures for the Testing of Certain Electric Motor Types

Prior to testing according to CSA C390-10, IEC 60034-2-1:2014 Method 2-1-1B, or IEEE 112-2017 Test Method B, each basic model of the electric motor types listed below must be set up in accordance with the instructions of this section to ensure consistent test results. These steps are designed to enable a motor to be attached to a dynamometer and run continuously for testing purposes. For the purposes of this appendix, a “standard bearing” is a 6000 series, either open or grease-lubricated double-shielded, single-row, deep groove, radial ball bearing.

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