Power cable joint device having pre-expanded sleeve and grease

摘要

The invention concerns a connecting cord junction or power cable joint device comprising at least a rigid tubular support element (4) including two cylindrical or conical half-supports, lubricated over most of its outer surface, with a grease which does not creep under of the pressure exerted by the retractile sleeve. The grease is based on silicon or glycol with talc filling containing at least a pressure-resistant additive including a filler in proportions ranging from 15 to 45% by weight and/or a pressure-withstanding additive in proportions ranging from 2 to 10% by weight. A pre-expanded and cold-retractable sleeve (5), encloses support element (4) over most of its length and on its internal end, and locking means capable of being unlocked, maintains support element (4) locked with respect to the pre-expanded sleeve (5).