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:
Nov. 20, 2012
Filed:
Dec. 01, 2009
Rainer Meisel, Vienna, AT;
Georg Ritzinger, Wolfpassing, AT;
Rainer Meisel, Vienna, AT;
Georg Ritzinger, Wolfpassing, AT;
Moeller Gebäudeautomation GmbH, Schrems, AT;
Abstract
A residual-current circuit breaker includes a summation current transformer having a core, a first secondary winding wound onto the core, and at least one second secondary winding wound onto the core, with lines of an electric network to be protected extending through the core. A tripping apparatus is operably connected to break contacts for opening the break contacts. A first arrangement is provided for detecting alternating residual currents and connected to the first secondary winding of the summation transformer. A second arrangement is connected to the second secondary winding for detecting direct residual currents, wherein a predeterminable alternating operation of the first and second arrangements is controlled by a timer device.