Hitachi Energy Ltd

Abb Technology Ltd

Hitachi Energy Switzerland Ag

Abb Schweiz Ag

Richard Thomas

Francesco Agostini

Magnus Backman

Sami Kotilainen

Jakub Korbel

Ener Salinas

Benny Wedin

Peter Stengard

Hauke Peters

Matt D Cuppett

Staffan Jacobsson

Dierk Bormann

Brian Christopher

Loic Fave

A power device includes a gas chamber adapted to include an insulation gas under a set of use conditions including a predetermined installation pressure, and an insulation component including a material in which said insulation gas is soluble and being arranged in relation to said gas chamber so as to be at least partly exposed to said insulation gas when the power device is in said use state. The power device has a delivery state, being a state of said power device before and/or at an installation time at which the power device is installed in said electric energy power arrangement under said set of use conditions including said installation pressure of said insulation gas in said gas chamber, wherein, in said delivery state, said insulation component includes an amount of pre-filled insulation gas which is dissolved in the material of the insulation component.

Power device comprising an insulation gas for use in an electric energy power arrangement

Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (&#x3b1;) of the radius (R) relative to a base angle (&#x3b1;), and whereby a rate (dR/d&#x3b1;) defined by a change of the radius (R) per change of the angle (&#x3b1;) is &#x2264;0.3 mm/&#xb0;.

Spring drive cam for a spring drive of a circuit breaker

A circuit breaker including a first and a second contact movable relative each other between an open position, in which the contacts are at a distance from each other, and a closed position, in which the contacts are in electrical contact with each other. The first contact includes one or more contact elements adapted to be in electrical contact with the second contact when the contacts are in the closed position, and a mesh made of metal arranged in thermal contact with the contact elements. The mesh is arranged to at least partly surround the contact elements to allow heat to conduct from the contact elements to the mesh.

Circuit breaker

Growing community of inventors

Borlänge, Sweden

Richard Thomas