Time-resolved space charge observation in water-treed XLPE

S. Mukai, Y. Ohki, Y. Li, T. Maeno

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Using an improved PEA system which is capable of measuring space charge distribution at minimum intervals of 25 μs, the charge distribution inside water-treed polyethylene was examined. When a power-frequency ac voltage (50 Hz) was applied, charges were observed around the tip of water trees and on the electrode at the non-degraded side, but not on the electrode at the water-treed side. This means that the conductivity of water trees is high. When the frequency of applied voltage was as high as 2 kHz, charges became observable also on the electrode at the water-treed side. This implies that the conductivity of water trees is slightly low at this frequency.

Original languageEnglish
Pages (from-to)645-648
Number of pages4
JournalConference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
Volume2
Publication statusPublished - 1998 Dec 1
EventProceedings of the 1998 67th IEEE Annual Conference on Electrical Insulation and Dielectric Phenomena. Part 1 (of 2) - Atlanta, GA, USA
Duration: 1998 Oct 251998 Oct 28

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Building and Construction

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