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Pat. 9899953 United States, Int. Cl.22 G05B 5/00, G01R 31/02, G01R 31/42, H02H 7/08, H02M 1/32, H02M 7/537, H02P 27/06, H02P 29/024, G05B 19/042. Method and apparatus for detecting ground faults in inverter outputs on a shared DC bus : Appl. N 15/193181 : Filed 27.06.2016 : Pub. 20.02.2018 : / John R. Figie, Zoran Vrankovic, Mark A. Gries, Craig Winterhalter, Gennadi Sizov ; Assignee Rockwell Automation Technologies Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9899953/en?oq=US9899953.html (дата обращения: ДД.ММ.ГГГГ).