The new TM21-G family of induction motors is designed for driving pumps, compressors, fans, conveyors and mine hoists. Standard features include frame sizes ranging from 315 to 900 mm, with maximum output power of 23,000 kW. Rated voltages range up to 11 kV. The maximum speed, operating from a variable frequency drive (VFD), is 3,600 rpm. Various cooling options are available, including fan cooling, air-to-air cooling and water-to-air cooling. Users can choose either anti-friction bearings or sleeve bearings. — Toshiba Mitsubishi-Electric Industrial Systems Corp. (TMEIC), Roanoke, Va.
