Electric Insulation Material, An Electric Device Comprising The Insulation Material And A Transformer
AssigneeABB Research Ltd.
InventorsOlof Hjortstam, Rongsheng Liu, Albert Jaksts, Gunilla Eken, Leif A. Pettersson
Life of this patent
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Abstract
An electric insulation material for an electric device includes one or several electrical conductors and an electric insulation material arranged around the conductor or between the conductors, which insulation material is impregnated with a dielectric insulation liquid. The electric insulation material includes a main layer that is provided with a surface layer that has a dielectric constant that is lower than the dielectric constant of the main layer.
Claims11
An electric insulation material for an electric device comprising one or several electrical conductors and an electric insulation material arranged around the conductor or between the conductors, and which insulation material is impregnated with a dielectric insulation liquid, characterized in that the electric insulation material comprises a main layer that is provided with a surface layer that has a dielectric constant that is lower than a dielectric constant of the main layer.
Dependencies are inferred from the claim text.