The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2016
Filed:
Feb. 12, 2014
Fronius International Gmbh, Pettenbach, AT;
Friedrich Oberzaucher, Wels, AT;
Joachim Danmayr, Nussbach, AT;
Fronius International GmbH, Pettenbach, AT;
Abstract
The invention relates to a method for checking a separation point () between a photovoltaic inverter () and a power supply network () having multiple phases (L, L, L) and a neutral conductor (N), wherein multiple switching contacts of the separation point () are controlled by the photovoltaic inverter (), and to a photovoltaic inverter (). To allow a simple and quick check of the functionality of the separation point (), the switching contacts of the separation point () are each formed by single-pole relays (-) and switched in steps according to a switching pattern. For checking switching contacts, a voltage () is measured at at least one phase (L, L, L) with respect to the neutral conductor (N), upstream of the separation point (), and compared to voltage values assigned in accordance with the switching pattern, thereby to deduce the functionality of the switching contacts.