Development of prefabricated joint for 275-kV XLPE cable
- Kansai Electric Power Co., Inc., Osaka (Japan)
- Sumitomo Electric Industries, Ltd., Osaka (Japan)
- Furukawa Electric, Ltd., Chiba (Japan)
- Hitachi Cable, Ltd. (Japan)
- Fujikura, Ltd., Tokyo (Japan)
- Mitsubishi Cable Industries, Ltd., Saitama (Japan)
Application of XLPE cables to extra-high-voltage (EHV) transmission lines is expanding due to its excellent electrical properties and ease of maintenance, and 275-kV long-distance underground transmission lines are reaching the stage of practical utility. Extrusion molded joints (EMJs) are widely used as the XLPE cable joint for EHV transmission lines. However, EMJs have presented problems because of their insulation, which are formed on site through extruding and molding of crosslinkable PE as like as the cable, need for long time installation on site and higher jointing technique. The prefabricated joints (PJs), which are already applied for 154-kV transmission line, are installed on site by using the parts manufactured and tested in the factory, they require shorter installation environment. This report introduces the results obtained regarding the improvement of electrical property, workability and the performance of PJs, designed for 275-kV XLPE cable. These joints are planned to be used for 275-kV transmission lines from 1995.
- OSTI ID:
- 136543
- Report Number(s):
- CONF-950103--
- Journal Information:
- IEEE Transactions on Power Delivery, Journal Name: IEEE Transactions on Power Delivery Journal Issue: 3 Vol. 10; ISSN 0885-8977; ISSN ITPDE5
- Country of Publication:
- United States
- Language:
- English
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