Development of insulation material for DC cables -- Space charge properties of metallocene catalyzed polyethylene
- Showa Electric Wire and Cable Co., Ltd., Kawasaki, Kanagawa (Japan)
Applicability of polyethylene polymerized using a metallocene catalyst to an insulation material for DC power cables has been investigated. The accumulation properties of space charge in a range from room temperature to 90 C was examined using the pulse electroacoustic method. The result indicated that hetero-charge was observed in the vicinity of the surface of sample at increased temperature, and that hetero-space charge produced by activation of an antioxidant added to the sample was increased or decreased with the increase of the temperature of sample. A hetero-charge absorber was added for controlling the hetero-space charge. As a result, hetero-charge was not observed on the sample in a high electric field extending from room temperature to high temperature. It was confirmed that the volume resistivity of sample was increased at high temperature.
- OSTI ID:
- 529605
- Report Number(s):
- CONF-960614--; ISBN 0-7803-3531-7
- Country of Publication:
- United States
- Language:
- English
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