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:
Apr. 27, 2021
Filed:
Jun. 12, 2018
Abb Schweiz Ag, Baden, CH;
Nitesh Ranjan, Niederrohrdorf, CH;
Elham Attar, Porsgrunn, NO;
Jan Carstensen, Waldshut-Tiengen, DE;
Magne Saxegaard, Porsgrunn, NO;
Martin Kristoffersen, Porsgrunn, NO;
Ståle Talmo, Skien, NO;
Stanley Lohne, Porsgrunn, NO;
Michael Schwinne, Ehrendingen, CH;
Martin Seeger, Oberentfelden, CH;
ABB Schweiz AG, Baden, CH;
Abstract
A load-break switch has a housing holding insulation gas at ambient pressure; a first main contact and a second main contact being movable relative to each other in an axial direction of the switch; a first arcing contact and a second arcing contact being movable relative to each other in the axial direction and defining an arcing region where an arc is formed during a current breaking operation, wherein the arcing region is located radially inward from the first main contact; a pressurizing system pressurizing a quenching gas during the current breaking operation; and a nozzle system arranged to blow the pressurized quenching gas onto the arc. The first main contact includes at least one pressure release opening to allow gas flow in a radial outward direction. A total area of the pressure release opening suppresses a reduction of gas flow out of the pressure release opening.