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Large low-cost single-phase SEMIHEXTM motors

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1 Author(s)
O. J. M. Smith ; Smith & Sun, Berkeley, CA, USA

These low-cost single-phase motors are 3-phase high efficiency induction motors with the SEMIHEXTM connection of the windings to 2 run capacitors. The single-phase winding currents at full load are the same as if the motors were connected to a 3-phase source. The single-phase full-load efficiencies are the same as the 3-phase efficiencies. The line starting current is unity power factor and is approximately two times the full-load current for motors between 10 HP and 100 HP

Published in:

IEEE Transactions on Energy Conversion  (Volume:14 ,  Issue: 4 )