Regulatory Language for State Equipment Standards
Electric motor means a machine which converts electrical power into rotational mechanical power and which:
- Is a general purpose motor, including but not limited to motors with explosion-proof construction; (A)General purpose motor@ means any motor which is designed in standard ratings with either: (A) Standard operating characteristics and standard mechanical construction for use under usual service conditions, such as those specified in NEMA Standards Publication MG 1[-2003] (see section 506.6 of the Part),[PDF] paragraph 14.02, A usual Service Conditions,@ and without restriction to a particular application or type of application; or (B) Standard operating characteristics or standard mechanical construction for use under unusual service conditions, such as those specified in NEMA Standards Publication MG 1[-2003] (see section 506.6 of the Part), [PDF] paragraph 14.03, A Unusual Service Conditions,@ or for a particular type of application, and which can be used in most general purpose applications.
- Is a single-speed, induction motor;
- Is rated for continuous duty operation, or is rated duty type S1;
- Contains a squirrel-cage or cage rotor, and has foot-mounting with flanges or detachable feet;
- Is built in accordance with NEMA T-frame dimensions, or International Electrotechnical Commission (IEC) metric equivalents;
- Has performance in accordance with NEMA Design A or B characteristics, or equivalent designs such as IEC Design N; and
- 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.
The minimum energy efficiency standards for open and totally enclosed fan cooled (TEFC) electric motors used in general purpose applications shall be the levels set forth in Table 5.6. [PDF] These levels are the same levels identified in the NEMA PremiumTM Efficiency Electric Motors Program. The efficiency of electric motors is to be determined in accordance with the procedures set forth in 10 Code of Federal Regulations (CFR) Part 431, Subpart B, [Section 431.24] Appendix B (see section 506.6 of this Part). [PDF]
Beyond State Equipment Standards
Consortium for Energy Efficiency
Premium-Efficiency Motors Initiative
Federal Energy Management Program
National Electrical Manufacturers Association
Electric Motor Equipment Product List