Patent · US Active

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

US8525535B2 · kind B2 · utility

0Cited by

20References

16Claims

0Family size

Assignee

ABB TECHNOLOGY AG · CH

Inventors

Thomas Eriksson · Ludvika, SE
Uno Gafvert · Hagfors, SE

Key dates

Filing date	Dec 1, 2010
Grant date	Sep 3, 2013
Priority date	—
Expiry date	Dec 1, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49002
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.