Test Body, Test Arrangement, Method For Manufacturing Of A Test Body, And Method For Determining A Moisture Content Of The Insulation Of A Power Transformer During Drying Thereof
First Claim
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 having a laminated structure of the same material as said laminated insulation, and having a shape and a size to obtain moisture content characteristics that resembles the moisture content characteristics of said laminated insulation, characterized in that said test body further comprises electrodes which are embedded in said laminated structure.
1 Assignment
0 Petitions
Accused Products
Abstract
A test body for use in determining moisture content in a laminated insulation of a power transformer by measuring a dielectric frequency response of the test body. The test body has a laminated structure of the same material as the laminated insulation, and has a shape and a size to obtain moisture content characteristics that resembles the moisture content characteristics of the laminated power transformer insulation. The test body further includes electrodes, which are embedded in the laminated structure.
-
Citations
16 Claims
- 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 having a laminated structure of the same material as said laminated insulation, and having a shape and a size to obtain moisture content characteristics that resembles the moisture content characteristics of said laminated insulation, characterized in that said test body further comprises electrodes which are embedded in said laminated structure.
-
12. A method for manufacturing 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 method comprising the steps of:
-
laminating together a plurality of plates of the same material as said laminated insulation and of a shape and a size to obtain moisture content characteristics of the plurality of plates laminated together that resembles the moisture content characteristics of said laminated insulation, characterized by the step of; forming electrodes on one or more surfaces of one or more of the plates prior to the step of laminating, wherein the step of laminating comprises the step of embedding said electrodes in said plurality of plates laminated together. - View Dependent Claims (13)
-
-
14. A method for determining a moisture content in a laminated insulation of a power transformer during or after drying thereof, comprising the steps of:
-
providing a laminated test body with electrodes embedded therein, wherein the moisture content characteristics of said test body corresponds to the moisture content characteristics of said laminated insulation; connecting a test device for measuring the dielectric frequency response to said electrodes; subjecting said test body to an atmosphere corresponding to an atmosphere that said laminated insulation is subjected to; determining the moisture content of said test body by means of measuring the dielectric frequency response thereof, and determining the moisture content of said laminated insulation based on the determined moisture content of said test body. - View Dependent Claims (15, 16)
-
Specification