Patent application number | Description | Published |
20110309715 | DIELECTRIC INSULATION MEDIUM - A dielectric insulation medium. The insulation medium is characterized in that it comprises a fluoroketone having from 4 to 12 carbon atoms. | 12-22-2011 |
20120152904 | ENCAPSULATED SWITCHGEAR - 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 −25° C. | 06-21-2012 |
20120256711 | SWITCH HAVING TWO SETS OF CONTACT ELEMENTS AND TWO DRIVES - An exemplary medium or high voltage switch has a first set of contact elements and a second set of contact elements. Each contact element includes an insulating carrier carrying conducting elements. In the closed current-carrying state of the switch, the conducting elements align to form one or more current paths between terminals of the switch along an axial direction. For opening the switch, the contact elements are mutually displaced by through two drives along a direction perpendicular to the axial direction. The switching arrangement is arranged in a fluid-tight housing in a gas of elevated pressure or in a liquid. The switch has a high voltage withstand capability and fast switching times. | 10-11-2012 |
20130020881 | CIRCUIT ARRANGEMENT AND METHOD FOR INTERRUPTING A CURRENT FLOW IN A DC CURRENT PATH - A DC current path for DC power transmission includes at least a first switching element and a second switching element connected in series. A resonance circuit is configured to be connectable in parallel to the series connection of the at least one first switching element and second switching element by means of a switch. | 01-24-2013 |
20130098874 | SWITCH HAVING TWO SETS OF CONTACT ELEMENTS - An exemplary medium or high voltage switch has a first set of contact elements and a second set of contact elements. Each contact element includes an insulating carrier carrying conducting elements. In the closed state of the switch, the conducting elements align to form one or more current paths between terminals of the switch along an axial direction. For opening the switch, the contact elements are mutually displaced by means of one or two drives along a direction perpendicular to the axial direction. The switching arrangement is arranged in a fluid-tight housing in a gas of elevated pressure or in a liquid. The switch has a high voltage withstand capability and fast switching times. | 04-25-2013 |
20130265692 | Dielectric Insulation Medium - A dielectric insulation medium including a hydrofluoro monoether, the hydrofluoro monoether containing at least three carbon atoms. The insulation medium according has high insulation capabilities, in particular a high dielectric strength, and at the same time a low GWP. The invention further includes an insulation medium which is chemically and thermally stable also at temperatures above 140° C., which is non-toxic or has a low toxicity level, and which in addition is non-corrosive and non-explosive. | 10-10-2013 |
20130277334 | Dielectric Insulation Medium - A dielectric insulation medium including a fluoroketone containing 5 carbon atoms, in a mixture with a dielectric insulation gas component different from the fluoroketone, in particular air or an air component, the dielectric insulation medium, in particular the dielectric insulation gas, having a non-linearly increased dielectric strength that is larger than a sum of dielectric strengths of the gas components of the dielectric insulation medium. | 10-24-2013 |
20130278078 | METHOD, CIRCUIT BREAKER AND SWITCHING UNIT FOR SWITCHING OFF HIGH-VOLTAGE DC CURRENTS - A high voltage DC circuit breaker includes a semiconductor switching assembly in series with a mechanical switch. When the semiconductor switching assembly is switched off due to a current fault, a residual current flowing through arresters of the semiconductor switching assembly is switched off by the mechanical switch. A capacitor arranged parallel to the mechanical switch leads to passive resonance effects, which in turn induce current zero crossings in its arc. The current zero crossings allow for reliable extinguishing of the arc. The mechanical switch can be an AC circuit breaker. | 10-24-2013 |
20140151202 | Encapsulated Switchgear - 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 −5° C. | 06-05-2014 |
20140175341 | Dielectric Insulation Medium - A dielectric insulation medium. The insulation medium is characterized in that it comprises a fluoroketone having from 4 to 12 carbon atoms. | 06-26-2014 |