Patent ID: 8525535
Filing Date: 2013-09-03
Classification: G01N,Y10T

Abstract:
1. A test body for use in determining a moisture content in a laminated insulation of a power transformer by means of measuring a dielectric frequency response of said test body, said test body comprising: a laminated structure of the same material as said laminated insulation of the power transformer, said laminated structure having a shape and a size to obtain moisture content characteristics that resembles the moisture content characteristics of said laminated insulation of the power transformer, wherein the laminated structure further comprises: a plurality of plates, made of the same material as said laminated insulation of the power transformer, adhered to one another, the plurality of plates having an at least one top plate, an at least one bottom plate and at least one middle plate, the at least one middle plate being longer than the at least one top plate and the at least one bottom plate, the at least one middle plate having an end portion protruding past the at least one top plate and the at least one bottom plate; at least one electrode embedded in said laminated structure, the at least one electrode forming at least one layer on one or more surfaces of at least one middle plate, the at least one middle plate supporting section of said at least one electrode; and electrode connectors directly connected to said at least one electrode arranged on the end portion of the at least one middle plate, the electrode connectors being directly connected to connectors of a test device.