This connection consists in two 110-kV-systems with three 110-kV underground cables each (connection of the 0922 “Rühle-Ost” and 1502 “Hanekenfähr-Holthausen” circuits) and leads from Hanekenfähr to the 1110 cable lifting mast. The first segment involved an underpass of the railway tracks connecting Münster and Norddeich using the pipe jacking method for DN 1,200 mm covering a tunnel length of approx. 100 meters. Subsequently, two cable conduit bundles including the relevant tracer pipes were inserted into the jacking pipe. For the second segment, which was approx. 700 meters long, the open-trench method was applied. For this purpose, egeplast Power Protect PE-RT protective layer pipes for high-voltage and very high voltage pipes featuring a low-friction internal layer and individual identification were used to guarantee a correct connection to the supply system in question along with the subsequent insertion of the underground cables, as civil engineer (M.Sc.) Till Ruland from Heckmann Bau explains: “Here, the high degree of precision required when inserting the pipe bundles into the DN 1,200 mm jacking pipe under very confined space conditions represents a major challenge. In this case, a suitable system solution for cable protection pipes is indispensable”.