NDLI: DC characteristics of cable insulating materials

Content Provider	IEEE Xplore Digital Library
Author	Suzuki, T. Katakai, S. Kanaoka, M. Sekii, Y.
Copyright Year	1989
Description	Author affiliation: Tokyo Electr. Power Co. Inc., Tokyo, Japan (Suzuki, T.)
Abstract	The insulation performance of PE (polyethylene) under DC voltage was investigated using sheet samples and miniature cables. Pressed sheets of various kinds of PE, which differed in material density and polymerization process, were prepared, and their thermally stimulated current and breakdown strength were measured. To confirm that insulating properties obtained in the experiments using sheet samples can also be obtained in thicker samples, experiments were conducted using miniature cables with 3.5-mm insulation thickness and a conductor cross-sectional area of 60 mm/sup 2/ to evaluate breakdown strength and to measure the thermally stimulated current. Both sets of results showed that HDPE (high-density PE) has excellent insulating properties under DC voltage. The breakdown strength is high and the space charge accumulation is small. These properties of HDPE are considered to be due to its molecular structure, with its short lengths of molecular branches.<>
Starting Page	66
Ending Page	71
File Size	296132
Page Count	6
File Format	PDF
DOI	10.1109/ICSD.1989.69163
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-07-03
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cable insulation Electric breakdown Sheet materials Voltage Cables Conducting materials Current measurement Polyethylene Polymers Density measurement
Content Type	Text
Resource Type	Article

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