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Pat. 10461689 United States, Int. Cl.22 G01R 31/26, G01R 31/40, H02J 3/38, H02S 40/32, H02S 50/10, H02M 1/00, H02M 7/44, H02M 7/5387. Method for testing the strings of solar modules of a photovoltaic system, and photovoltaic inverter for carrying out the method : Appl. N 15/569935 : Filed 28.04.2016 : Pub. 29.10.2019 : / Thomas Ringer, Hannes Schwarzkogler, Johannes Schubert, Thomas Sieberer ; Assignee Fronius International Gmbh ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10461689/en?oq=US10461689.html (дата обращения: ДД.ММ.ГГГГ).