Title :
Basic studies on extrusion molded joints for high-voltage XLPE cables
Author :
Fukunaga, Sadao ; Yatuka, Ken ; Ban, Shun-ichiro ; Hirotu, Ken-ichi
Author_Institution :
Sumitomo Electr. Ind. Ltd., Osaka, Japan
Abstract :
The relation between jointing condition and interface microcavity generation was investigated for extrusion molded joints (EMJs) for XLPE (cross-linked polyethylene) cable. In addition, the relation between jointing condition and water generation in the cable´s reheated part was studied for the purpose of finding the optimum jointing condition that does not degrade electrical characteristics. Ways to eliminate microcavities on the interface and extra-long bow-tie trees in the middle layer of the reheated part have been investigated
Keywords :
cable jointing; high-voltage techniques; insulation testing; organic insulating materials; polymers; power cables; bow-tie trees elimination; cross-linked polyethylene; extra-long bow-tie trees; extrusion molded joints; high-voltage XLPE cables; interface microcavity generation; jointing condition; microcavities elimination; on-site extrusion; optimum jointing condition; water generation; Breakdown voltage; Cable insulation; Noise generators; Optical noise; Partial discharges; Polyethylene; Power transformer insulation; Semiconductivity; Semiconductor device noise; Trees - insulation;
Conference_Titel :
Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
DOI :
10.1109/ELINSL.1990.109760
