Abb Technology Ag

Abb Research Ltd.

Abb Schweiz Ag

Hitachi Energy Ltd

Ole Granhaug

Robert Espeseth

Jan-Henrik Kuhlefelt

Thor Endre

Pal Skryten

Per Skarby

Tom-Rune Bjortuft

Maik Hyrenbach

Paal Kristian Skryten

Max-Steffen Claessens

Patrik Roseen

Stanley Lohne

Wojciech Piasecki

Magne Saxegaard

John-Anders Tveten

Magdalena Ostrogorska

Lukasz Malinowski

Dariusz Bednarowski

Alessandro Mattozzi

Gunn-Kristin Sonsteby

Grzegorz Bywalec

Dariusz Smugala

Lars-Johan Lindqvist

Silvio Stangherlin

Gerhard Salge

Kim Boe

Lars Johan Lindqvist

Jan-Henrik Ocean Express B303 Kuhlefelt

Sun Huigang

Deng Xianbo

ÖIvind Naper

Henrik Landsverk

Hakon Renskoug

Jan-Henrik Kuhelfelt

Pal Kristian Skryten

Thor Eendre

Gunn-Kristin Sönsteby

Pal Kristian Skyrten

An encapsulated switchgear that includes a housing defining, an insulating space, and an electrical active part arranged in the insulating space, the insulating space with an insulation medium. The switchgear is characterized in that the insulation medium with a dielectric compound having a boiling point of above &#x2212;5&#xb0; C.

Encapsulated switchgear

A device for suppressing very fast transients, applicable in protecting electric and/or electric power equipment, and especially transformers operating in electric power substations and in wind power plants, connected in a supply network circuit downstream of a circuit breaker and upstream of the protected equipment is disclosed. The device is a component of an induction character, comprising a high-frequency magnetic core arranged around the current-conducting lead. On the magnetic core is wound at least one winding with at least one pair of terminals used for connecting at least one damping resistor. The inventive device contains an insulating body in which there is a magnetic core, a damping resistor and a winding, or an insulating body in which there is a magnetic core together with a damping resistor, a winding and a section of a current-conducting lead.

Very fast transient suppressing device

An encapsulated switchgear that includes a housing defining, an insulating space, and an electrical active part arranged in the insulating space, the insulating space with an insulation medium. The switchgear is characterized in that the insulation medium with a dielectric compound having a boiling point of above &#x2212;25&#xb0; C.

A device for electric connection to an energy supply conductor for medium and/or high voltage having a voltage-carrying element with an outer periphery, and a tubular outer shell with an inner periphery, the outer shell being formed by a polymer, and along at least a part of the axial extension of the element the outer shell extends axially with a space between its inner periphery and the outer periphery of the element, at least along a section of said part of the axial extension of the element the space is filled with a filler of an electrically insulating material other than that of the outer shell. An electric installation including the device, and a method for producing the device.

Device for electric connection, a method for producing such a device, and an electric installation

A switch disconnector is disclosed. The switch disconnector has a main contact point and an arc interruption contact point, of which the main contact point opens before the arc interruption contact point during a disconnection operation and is closed after the arc interruption contact point during connection, with a stationary and a moving contact-piece arrangement, with the stationary contact-piece arrangement having a pot contact piece with contact fingers and with the moving main contact point having a contact cylinder which is connected to a contact mount, and with the arc interruption point having a contact pin as the stationary contact piece and an annular contact piece as the moving contact piece. The contact pin has a section composed of interruption-resistant material, whose external diameter is greater than the external diameter of the rest of the pin area. The contact pin has at least one slot which runs in the longitudinal direction and splits the pin into at least two pin fingers.

Switch disconnector

A device for electric connection to an energy supply conductor for medium and high voltage, including: a voltage-carrying element; a tubular outer shell formed by a thermoplastic polymer and connected to the voltage carrying element; wherein the voltage-carrying element extends in a longitudinal direction of the tubular shell, and wherein, at least along a part of the length of the voltage-carrying element, the outer shell extends in a longitudinal direction with a space between its inner periphery and an outer periphery of the voltage-carrying element; the outer shell being provided with an outer contact surface to be connected to a wall of a gas-tight container somewhere along the part of the length of the voltage-carrying element; wherein the outer shell is arranged so as to separate said space from an atmosphere outside a container to which the device may be connected. At least along a section of the part of the length of the voltage-carrying element the space is filled with a filler of an electrically insulating material other than that of the outer shell, the filler completely filling the space along the section.

Device for electric connection, a method for producing such a device, and an electric power installation provided therewith

The invention relates to a fuse system for a switchgear assembly, especially for a medium voltage switchgear assembly. The fuse system comprises a plurality of fuses which correspond to the number of phases, every fuse having a tripping bar that projects from the face of the fuse under the effect of the force of a spring when the fuse comes into action. A sealing body, with a spring arrangement interposed, pushes a sealing head into the interior of a receptacle receiving the fuse. A two-armed lever is received on the sealing head, one arm covering a tripping mechanism which actuates a power switch.

Fuse arrangement

A contact system for a short-circuiting device for a switchboard, the contact system including at least one fixed contact piece connected to a main voltage source. The contact system also includes at least one moving contact piece and an insulating screen penetrable using the at least one moving contact piece so as to make contact between the at least one moving contact piece and the at least one fixed contact piece. The screen is disposed between the at least one fixed contact piece and the at least one moving contact piece.

Contact system for a short-circuiting device in a medium-voltage or high-voltage switchboard plant

A current conductor for an electrical device including an electrically conducting central section having a first side and a second side. The central section is configured to receive at least one inserted electrical component. Two electrical conducting shield sections are each disposed on one of the first side and the side and configured to shield against an electric field. The shield sections cover the central section and the at least one inserted electrical component.

Current conductor for an electrical device, especially bus bar conductor for an electrical medium voltage installation

A load disconnecting circuit is disclosed with a housing that has a first housing section, which houses the drive, and has a second housing section, which houses a fixed contact element and a longitudinally extended moving contact element. The second housing section has a longitudinal extension adapted to the moving contact element. Field-control rings are placed on the second housing section while encircling it, of which the first are arranged in the vicinity of the fixed contact element and the second are arranged in the vicinity of the switch-off position of the moving contact element. Via a respective connection conductor, the first field-control ring is connected to the potential of the fixed contact element, and the second field-control ring is connected to the potential of the moving contact element when in its switch-off position.

Switch disconnector and switchgear assembly with a switch disconnector

Growing community of inventors

Skien, Norway

Ole Granhaug