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Federal Register / Vol. 86, No. 1 / Monday, January 4, 2021 / Rules and Regulations TABLE II1SYNOPSIS OF THE NOTICE OF TEST PROCEDUREContinued Current test procedure
NOPR test procedure
Does not incorporate by reference IEC
6003421:2014.

For Small Electric Motors: Specifies testing at rated load but does not define that term.

For Small Electric Motors: Specifies testing at rated voltage and rated frequency, but does not define those terms.

2 Alignment of core loss calculation with CSA 39010 and Method 21
1B of IEC 6003421:2014.
Proposed adding Method 211B of IEC 6003421:2014 as an alternative to IEEE 1122004 Test Method B, IEEE 1122017 Test Method B
and CSA C39010.
Proposed adding Method 211A of IEC 6003421:2014 as an alternative to IEEE 1142010, IEEE 112
2004, IEEE 1122017 Test Method A and CSA C74709.
Proposed defining rated load and rated output power and breakdown torque to support the definition of rated load of small electric motors based on NEMA MG 12016.

Proposed defining rated voltage, which provides that manufacturers select the voltage that is used for testing, and rated frequency.

DOE has determined that the amendments described in section III of this notice will not alter the measured efficiency of small electric motors or electric motors, and that the test procedures will not be unduly burdensome to conduct. Discussion of DOEs actions are addressed in detail in section III of this document.
III. Discussion A. Scope of the Test Procedures for Currently Regulated Small Electric Motors and Electric Motors This final rule does not change the scope of the test procedure with respect to small electric motors and electric motors. The scope of the test procedure as applied to currently regulated motors is discussed in sections III.A.1 through III.A.3.
1. Definition of Small Electric Motor EPCA defines the term 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. 42 U.S.C. 631113G In the July 2009 final rule, DOE adopted a modified version of this definition at 10 CFR
431.442 to specify that the term also encompasses those motors that are built as IEC metric equivalent motors. 74
FR 32059, 32062; 10 CFR 431.442. This specification ensures that motors that otherwise satisfy the small electric motor definition but are built in accordance with metric-units are treated in a like manner as their counterparts
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Final rule test procedure
Reason
Identical to the NOPR

Addresses suggestions offered in industry petition EERE2017BTTP
00470030.

Similar to the NOPR. Clarifies that DOE will not require additional testing and measurement of breakdown torque. Also clarifies the definition of breakdown torque.

Reflects industry practice and improves the representativeness of the test procedure.
Addresses comments to the April 2019 NOPR regarding testing and reporting. See section III.C for further discussion.
Improves repeatability of the test procedure.

Similar to the NOPR. Clarifies further that the rated voltage must be one of the voltages used by the manufacturer for making representation of the small electric motor performance.

that are built in accordance with U.S.
customary units of measurement.
The current definition at 10 CFR
431.442 lists the criteria that must be met for a motor to be defined as a small electric motor. Under these criteria, a small electric motor is:
A NEMA general purpose motor 8
that:
Uses alternating current, Is single-speed, Is an induction motor; and Is built in a two-digit frame size in accordance with NEMA Standards Publication MG 11987, including IEC
metric equivalent motors. See 10 CFR
431.442.
DOE did not propose to modify the definition of small electric motor in the April 2019 NOPR See 84 FR 17004, 17007 and DOE did not receive any comments suggesting that it do so.
Accordingly, DOE is not modifying the current definition of small electric motor.
2. Scope of the Small Electric Motor Test Procedure In the March 2010 final rule, DOE
concluded that the following motor topologies satisfy the small electric motor definition: Capacitor-start induction-run CSIR, capacitor-start capacitor-run CSCR, and certain polyphase motors. 75 FR 10874, 10882
8 In response to questions from NEMA and various motor manufacturers, DOE issued a guidance document that identifies some key design elements for consideration when determining whether a given individual motor meets the small electric motor definition and is subject to the energy conservation standards promulgated for small electric motors. See https www.regulations.gov/
document?D=EERE-2017-BT-TP-0047-0082.

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10883. DOE determined for purposes of its regulations that only CSIR, CSCR, and polyphase motors are able to meet the performance requirements in NEMA
MG1 and are widely considered general purpose alternating current motors, as shown by the listings found in manufacturers catalogs. Id. As such, DOE concluded that CSIR, CSCR, and polyphase motors are the only motor categories that would satisfy the relevant criteria set by EPCA to be regulated as small electric motors. 75 FR
10874, 10883. DOE established test procedures for these three topologies in subpart X of 10 CFR part 431.
In response to the April 2019 NOPR, DOE received a number of comments relevant to the scope of applicability for the small electric motors test procedures. NEMA commented that there have been no significant technological advancements for small electric motors since the last rulemaking and that it supported maintaining the current scope of applicability. NEMA, No. 84 at p. 2 9 AHAM and AHRI also supported the current scope of the test procedure, AHAM and AHRI, No. 85 at pp. 12, and opposed developing separate test procedures and energy conservation standards for special and definite purpose motors. In their view, an expanded test procedure scope would increase costs equipment cost, 9 A notation in the form NEMA, No. 84 at p. 2
identifies a written comment: 1 Made by NEMA;
2 recorded in document number 84 that is filed in the docket of this test procedure rulemaking Docket No. EERE2017BTTP0047 and available for review at http www.regulations.gov;
and 3 which appears on page 2 of document number 84.

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