Capacitive voltage-sensor assembly
AssigneeG & W Electric Company
InventorsLorenzo Peretto, Alberto Bauer
Life of this patent
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Abstract
A constructive system regarding a capacitance electric voltage sensor comprises a source electrode (110, 210), a shielding tubular body (120, 220), an electric field sensor (130, 230) and a mass of dielectric insulating material (140, 240). The electric field sensor (130, 230) comprises at least one first inner sheet (131, 231) and a second outer sheet (132, 232) superimposed and joined together, wherein said first inner sheet (131, 231) is made by means of a conductive metal material, wherein said second outer sheet (132, 232) is made by means of an electrically insulating material, and wherein said second outer sheet (132, 232) made of insulating material is constrained with respect to the inner face (124, 224) of the shielding tubular element (120, 220).
Claims10
A capacitive voltage sensor comprising:
- an elongated source electrode extending along a longitudinal axis and having first and second axially opposite electrode ends;
- a tubular shield surrounding the electrode and having
- a first axial portion,
- a second axial portion spaced axially from the first portion,
- an inner surface spaced radially outward from the electrode, and
- an outer surface;
- a tubular electric field sensor inside the tubular shield, between the first and second portions thereof, spaced radially outward from the source electrode, and formed by a first inner layer of electrically conductive material spaced radially outward from the source electrode and a second outer layer of electrically insulating material bonded to and covering the first layer and fixed to the inner surface of the tubular shield;
- and
- a mass of dielectric insulating material surrounding the tubular shield and filling the tubular shield between the inner surface thereof and the source electrode, thereby embedding the field sensor.
Dependencies are inferred from the claim text.