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A Study on the Dependence of Water Tree Permittivity with Time


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Opened Access A Study on the Dependence of Water Tree Permittivity with Time

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Author: Radu, I.
Acedo García, Miguel
Notingher, P.
Frutos Rayego, Fabián
Filippini, Jean César
Department: Universidad de Sevilla. Departamento de Física Aplicada I
Date: 1996
Published in: 1996 IEEE Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, (2), 772-775, San Francisco, October 20-23,1996
ISBN/ISSN: 0-7803-3580-5
Document type: Presentation
Abstract: During the growth of water trees in the insulation of a cable the distribution of the electric field is modified because of the local change of the dielectric properties of the material. It results a local enhancement of the electric field which could increase the risk of breakdown. The key factor is the permittivity of the water tree and the aim of the work is to determine its possible values and, particularly, the law of its increase with time during the of the trees. The paper presents permittivity measurements in uniform field in MV and power
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