Verfahren zum Installieren einer gasisolierten Rohrleiter-Kabelanlage

摘要

When installing a cable system insulated by gas within pipes, several prefabricated individual lengths (11, 12, 13) are at first assembled into a subsection (16, 17) and the subsection is laid into a ditch. A second subsection, a third subsection and so on are then assembled and joined to the previous subsections in the ditch (7). While the subsections are assembled and joined, a flow of dried air (1, 10, 21) is maintained therein from their outer ends. The momentary junction area is surrounded and sealed by a mobile mounting chamber (1, 20) out of which the inflowing air is sucked away (3).