Full definition
Rotating machine converting electrical energy into mechanical torque and speed. Dominant industrial type: three-phase squirrel-cage induction motor (AC), covering 90%+ of industrial applications. Other types: single-phase (fractional HP), wound-rotor (high starting torque), synchronous (constant speed), DC (precise speed control), permanent-magnet servo (positioning). Classification per NEMA MG-1: frame size (143T-449T), power (0.5-500+ HP), speed (900/1200/1800/3600 RPM at 60 Hz), efficiency (Standard, Energy Efficient, NEMA Premium per NEMA MG-1 Table 12-12). IE efficiency classes per IEC 60034-30-1: IE1 to IE5. Insulation classes: B (130°C), F (155°C), H (180°C). Enclosures: ODP, TEFC, TENV, XPRF. Voltage: 230/460V common in Mexico. Brands: WEG, Siemens, ABB, Nidec, Baldor (ABB).