High Inertia Motors

ABB modular induction motor designed for for driving large axial fans.

Comments Off on High Inertia Motors August 14, 2013
by Design Engineering Staff

Baldor Electric Company is now offering ABB’s new high inertia motors designed to withstand the increased temperature rise during start and stall conditions, and have stall times longer than their start times. The 6 – 10 pole motors are designed in accordance with NEMA standards. They cover the power range 7,000 to 18,500 HP in frame sizes 710-900. Voltages can be supplied up to 13.2kV 60 Hz, with cooling systems available as WPII, TWEAC and TEAAC.

Based on ABB’s modular induction motor, the high inertia motors utilize optimized rotor bar designs made from selected materials, including higher resistivity copper alloys. The motors have also been re-dimensioned to accommodate the temperature rise associated with high inertia starts, and the overall design has been optimized to achieve balance between torque and temperature performance.