Gas-insulated load break switch and switchgear comprising a gas-insulated load break switch

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...

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Bibliographic Details
Main Authors Saxegaard, Magne, Lohne, Stanley, Ranjan, Nitesh, Attar, Elham, Talmo, Ståle, Carstensen, Jan, Kristoffersen, Martin, Schwinne, Michael, Seeger, Martin
Format Patent
LanguageEnglish
Published 27.04.2021
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary: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.
Bibliography:Application Number: US201816626199