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Development of prefabricated type straight through joint for 275 kV XLPE cable

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4 Author(s)
Tanaka, T. ; Tokyo Electric Power Co., Japan ; Sekii, Yasuo ; Satoh, H. ; Yamaguchi, M.

The research involved in developing a prefabricated-type straight-through joint for 275 kV cross-linked polyethylene (XLPE) cable is described. Based on a review of the results of electric field analysis, a compact insulation structure using a molded epoxy insulation unit and a molded ethylene propylene rubber (EPR) stress-relieving cone was designed. The AC and lightning impulse voltage test as well as the short-circuit test and the offset test were conducted on the joint developed. The results have shown that the joint possesses excellent assembly properties and superb insulation performance. The accelerated long-term aging test was also conducted for six months and provided verification that the joint developed has adequate long-term reliability

Published in:

Transmission and Distribution Conference, 1991., Proceedings of the 1991 IEEE Power Engineering Society

Date of Conference:

22-27 Sep 1991