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Pat. 11177647 United States, Int. Cl.22 H02H 7/122, H02H 3/16, H02M 7/537, G01R 31/52, H02H 3/04. Ground fault detector and power conditioner with input-side ground fault detection : Appl. N 16/494452 : Filed 18.07.2017 : Pub. 16.11.2021 : / Tomoya Katsukura, Tomonori Ujiie, Masahiro Kinoshita ; Assignee Toshiba Mitsubishi Electric Industrial Systems Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11177647/en?oq=US11177647.html (дата обращения: ДД.ММ.ГГГГ).