NEMA Design C motor
NEMA Design C motor means a squirrel-cage motor that:
(1) Is Designed to withstand full-voltage starting and developing locked-rotor torque for high-torque applications up to the values shown in NEMA MG1-2009, paragraph 12.38.2 (incorporated by reference, see ยง 431.15);
(2) Has pull-up torque not less than the values shown in NEMA MG1-2009, paragraph 12.40.2;
(3) Has breakdown torque not less than the values shown in NEMA MG1-2009, paragraph 12.39.2;
(4) Has a locked-rotor current not to exceed the values shown in NEMA MG1-2009, paragraphs 12.35.1 for 60 hertz and 12.35.2 for 50 hertz; and
(5) Has a slip at rated load of less than 5 percent.
Source
10 CFR § 431.12
Scoping language
The following definitions apply for purposes of this subpart, and of subparts U and V 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.