US 12,068,605 B2
Reverse flow automatic transfer switch
Julie M. Delago, Afton, MN (US); Timothy R. Beaucage, Coon Rapids, MN (US); and Dennis McDonald, Golden Valley, MN (US)
Assigned to Cummins Power Generation IP, Inc., Minneapolis, MN (US)
Filed by Cummins Power Generation IP, Inc., Minneapolis, MN (US)
Filed on Jul. 15, 2022, as Appl. No. 17/866,347.
Application 17/866,347 is a continuation of application No. 16/200,374, filed on Nov. 26, 2018, granted, now 11,394,201.
Prior Publication US 2022/0352716 A1, Nov. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 3/06 (2006.01); H01H 3/28 (2006.01); H02J 9/06 (2006.01)
CPC H02J 3/06 (2013.01) [H01H 3/28 (2013.01); H02J 9/06 (2013.01); H01H 2300/018 (2013.01); H02J 9/068 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
coupling a first source pole of a first reverse flow automatic transfer switch with a first power source;
coupling a first load pole of the reverse flow automatic transfer switch with a first load;
coupling a second load pole of the reverse flow automatic transfer switch with a second load;
selectively closing a first switch of the reverse flow automatic transfer switch to couple the first load pole to the source pole;
selectively closing a second switch of the reverse flow automatic transfer switch to couple the second load pole to the source pole;
coupling a second source pole of a second reverse flow automatic transfer switch with a second power source;
selectively coupling a third load pole with the second load pole of the first reverse flow automatic transfer switch and the second load; and
selectively coupling a fourth load pole to the first load pole of the first reverse flow automatic transfer switch and the first load to provide a ring bus topology.