Invention Grant
- Patent Title: 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
- Patent Title (中): 试验体，试验装置，试验体的制造方法以及干燥时电力变压器的绝缘水分含量的判定方法
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Application No.: US12958034Application Date: 2010-12-01
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Publication No.: US08525535B2Publication Date: 2013-09-03
- Inventor: Thomas Eriksson , Uno Gafvert
- Applicant: Thomas Eriksson , Uno Gafvert
- Applicant Address: CH
- Assignee: ABB Technology Ltd.
- Current Assignee: ABB Technology Ltd.
- Current Assignee Address: CH
- Agency: St. Onge Steward Johnston & Reens LLC
- Priority: EP08159112 20080626
- Main IPC: G01R27/08
- IPC: G01R27/08
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.
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