Abb Research Ltd.

Asea Brown Boveri Ab

Anders Bjorklund

Henrik Hillborg

Mats Leijon

Stefan Valdemarsson

Tommy Holmgren

Dan Windmar

Urban Astrom

An electrical insulation system includes a first insulation layer having a first polymer and a first filler in the form of nanoparticles, and a second insulation layer including a second polymer and a second filler in the form of either chromium oxide, CrO, iron oxide, FeO, or a mixture of chromium oxide and iron oxide. At least one of the insulation layers is in the form of a solid and flat sheet. An insulation system combining the first insulation layer with well dispersed nanoparticles and the second insulation layer filled with CrOparticles and/or FeOparticles.

Electrical insulation system

An electrical conductor provided with an electrical insulation system surrounding the conductor, the insulation includes a first insulation layer surrounding the conductor and a second insulation layer surrounding the first insulation layer. The second insulation layer includes a second polymer and a second filler in the form of chromium oxide (CrO), iron oxide (FeO), or a mixture of chromium oxide and iron oxide, wherein the first insulation layer includes a first polymer and a first filler including dispersed nanoparticles.

Electrical conductor with surrounding electrical insulation

An arrangement with a conductor (15) intended to be on a high potential and a part (12) connected to ground and separated therefrom by at least a voltage receiving air gap (16, 17), comprising an insulating envelope (18) surrounding said conductor and at least a first member (9) of electrical insulating material arranged to screen off said ground part from said conductor. Said air gap is dimensioned to get such a high electrical field strength by possible sudden, strong voltage raises of said conductor, that air molecules in said air gap will be ionized. Said insulating envelope (18) and the insulating member (9) have surfaces arranged to receive electrical charges generated through said ionizing for creating a voltage over their thicknesses and decreasing the voltage drop in the air gap between the conductor (15) and the ground part (12).

Arrangement at a conductor on high voltage potential

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Vasteras, Sweden

Anders Bjorklund