Patent ID: 8028540
Filing Date: 2011-10-04
Classification: H02K

Abstract:
1. A hermetic bushing assembly and circuit comprising: a first power-supply terminal and a second power-supply terminal for coupling with an external two-wire single-phase power supply, the first power-supply terminal coupled to a first wire or electrical conductor and the second power-supply terminal coupled to a second wire or electrical conductor; four electrically conducting metal bars, each bar electrically insulated, and each bar having first and second electrical terminals located proximate each end of the bar, and further including; a first bushing bar to electrically connect said first wire of said power supply to a first terminal of a first winding of a three-winding induction motor; a second bushing bar to electrically connect said second wire of said power supply to a first terminal of a second winding of said three-winding induction motor; a third bushing bar to electrically connect to both a second terminal of said first winding of said three-winding induction motor and to a second terminal of said second winding of said three-winding induction motor; said first bushing bar also electrically connecting said first terminal of a third winding of said three-winding induction motor to said first wire; means to electrically connect a first run capacitor between said first wire and said second terminal of said third bushing bar; and a fourth bushing bar to electrically connect a second run capacitor between said second wire and a second terminal of said third winding of said three-winding induction motor.