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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.:

US 10964498 B1

PDFFull Text
Date of Patent:
Mar. 30, 2021

Filed:

Dec. 03, 2018

Gas-insulated low- or medium-voltage load break switch

Applicant:

Abb Schweiz Ag, Baden, CH;

Inventors:

Bernardo Galletti, Nussbaumen, CH;

Elham Attar, Porsgrunn, NO;

Jan Carstensen, Waldshut-Tiengen, DE;

Magne Saxegaard, Porsgrunn, NO;

Martin Kristoffersen, Porsgrunn, NO;

Martin Seeger, Oberentfelden, CH;

Michael Schwinne, Ehrendingen, CH;

Nitesh Ranjan, Niederrohrdorf, CH;

Patrick Stoller, Illnau, CH;

Assignee:

ABB Schweiz AG, Baden, CH;

Attorney:

Taft Stettinius & Hollister LLP

Primary Examiner:

William A Bolton

Int. Cl.
CPC ...
H01H 33/12 (2006.01); H01H 33/56 (2006.01); H01H 33/70 (2006.01); H01H 33/88 (2006.01); H01H 33/91 (2006.01); H01H 9/52 (2006.01);
U.S. Cl.
CPC ...
H01H 33/7023 (2013.01); H01H 9/52 (2013.01); H01H 33/121 (2013.01); H01H 33/56 (2013.01); H01H 33/703 (2013.01); H01H 33/7038 (2013.01); H01H 33/88 (2013.01); H01H 33/91 (2013.01); H01H 2033/566 (2013.01);
Abstract

A gas-insulated low- or medium-voltage load break switch includes: a housing defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact and a second arcing contact arranged within the housing volume, the first and second arcing contacts being movable in relation to each other along an axis of the load break switch and defining a quenching region in which an arc is formed during a current breaking operation; a pressurizing system having a pressurizing chamber arranged within the housing volume for pressurizing a quenching gas from an ambient pressure pto a quenching pressure pduring the current breaking operation; and a nozzle system arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber onto the arc formed in the quenching region during the current breaking operation. The nozzle system includes at least one nozzle arranged for blowing the quenching gas from an off-axis position predominantly radially inwardly onto the quenching region.

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