Title :
A comparison between water tree structure in laboratory specimen and in cable
Author :
Moreau, E. ; Boudet, A. ; Mayoux, C. ; Laurent, C. ; Montagné, Ph ; Berdala, J.
Author_Institution :
CNRS, Toulouse, France
Abstract :
Observations of water trees in molded XLPE (cross-linked polyethylene) grown by the needle method have shown that they consist of a network of microchannels wandering through the polyethylene. This structure was evidenced even at the early stages of the growth. Their diameters vary from 0.1 μm to 1 μm. The same morphology was observed in a cable insulator aged in situ, at least for well-developed water trees. It is thus concluded that the artificially grown water trees could represent a good simulation for studying their development
Keywords :
cable insulation; electric breakdown of solids; organic insulating materials; polymers; power cables; XLPE insulation; artificially grown water trees; molded XLPE; network of microchannels; power cables; simulation; water tree structure; Cable insulation; Dielectrics; Fluorescence; Laboratories; Microcavities; Microstructure; Polyethylene; Scanning electron microscopy; Transmission electron microscopy; Trees - insulation;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172021
