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:
Mar. 15, 2012
Elmar Schaper, Luegde, DE;
Rainer Durth, Horn-Bad Meinberg, DE;
Lutz Heuer, Blomberg, DE;
Bernd Schulz, Steinheim, DE;
Elmar Schaper, Luegde, DE;
Rainer Durth, Horn-Bad Meinberg, DE;
Lutz Heuer, Blomberg, DE;
Bernd Schulz, Steinheim, DE;
PHOENIX CONTACT GMBH & CO KG, Blomberg, DE;
Abstract
An apparatus for short-circuit protection of a three-phase load in a three-phase system includes an input for connection of the apparatus to a three-phase network, an output for connection of the three-phase load to the apparatus, a means for producing an auxiliary short circuit in the three-phase network by ignition of the means, a means for identifying a short circuit at the three-phase load, and a means for generating an ignition pulse upon identification of the short circuit. The means for producing the auxiliary short circuit and the means for identifying the short circuit are provided in the current path between the input and the output. The means for producing the auxiliary short circuit is ignitable by the ignition pulse. The means for generating the ignition pulse is formed so that the ignition pulse can be generated by a short-circuit current established by the means for identifying the short circuit.