Patent ID: 8861148
Filing Date: 2014-10-14
Classification: F24F,G01R,H02H

Abstract:
1. An HVAC unit, comprising: a condensing coil; a compressor fluidly coupled to said condensing coil; a condenser fan having a motor and configured to move air over said condensing coil; terminals electrically coupled to said condenser fan and said compressor and configured to receive a split-phase, three-wire AC voltage supply, wherein a first hot leg of said split-phase, three-wire AC voltage is supplied to said compressor and a second hot leg of said split-phase, three-wire AC voltage is supplied to said motor of said condenser fan; and a surge protector collocated in a housing with said compressor and said condenser fan to provide dedicated surge protection for said compressor and said condenser fan motor, including: a protective network having three surge protection units with a first one of said three surge protection units coupled between said first and said second leads, a second one of said three surge protection units coupled between said second and said third leads, a third one of said three surge protection units coupled between said third and said first leads, said first, second and third surge protection units having equal protection capacities and configured to provide simultaneous surge protection between each of said distinct combinations.