Technical Report

Extrusion-molded joints for world's first long-distance XLPE cable line

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The features of a long-distance underground line using 275-kV cross-linked polyethylene (XLPE) cable with extrusion-type molded joints (EMJs) are described. The line has a transmission capacity of 440 MW/cct and a 9.5-km section length. The cable has a cross-sectional area of 1400 mm2 and an insulation thickness of 17 mm. The EMJ, which was developed to withstand the higher stresses of the 275-kV cable, has the following features: (1) the conductor is connected using a copper ferrule, (2) semiconducting heat-shrinkable tubes are used for both inner and outer semiconducting layers, and (3) the insulation unit, applied on top of the stress-relieving cone, is made of insulating and semiconducting XLPE parts cured together in the factory. The fabrication of the joint is described.

Original languageEnglish
Pages (from-to)31-33
Number of pages3
JournalIEEE Electrical Insulation Magazine
Volume7
Issue number3
DOIs
Publication statusPublished - 1991 May
Externally publishedYes

Fingerprint

Extrusion
Cables
Insulation
Stress relief
Polyethylene
Industrial plants
Polyethylenes
Cones
Copper
Fabrication
Hot Temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Technical Report : Extrusion-molded joints for world's first long-distance XLPE cable line. / Ohki, Yoshimichi.

In: IEEE Electrical Insulation Magazine, Vol. 7, No. 3, 05.1991, p. 31-33.

Research output: Contribution to journalArticle

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