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New cable passes under the Main

New cable passes under the Main

System change successfully implemented

The overhead lines between the Seligenstadt and Dettingen am Main substations were replaced by an underground cable system. SAG took on the challenging project.


SAG was contracted by Energieversorgung Offenbach (EVO) to dismantle the 2-feed 110 kV overhead lines between the Seligenstadt and Dettingen an Main substations and replace them with two new cable connections. This meant that two 270 metre-long cable systems had to be passed underneath the Main.

In order to safeguard the supply to the Seligenstadt substation during construction works, a replacement temporary cable was run from the last pylon to the substation in Seligenstadt. Alterations were also required to the substation itself in order to install the new cabling there.

Overview of SAG services

  • Cable dimensioning (in collaboration with Südkabel (supplier))
  • Supply and infeed of 8,445 metres of 110 kV XLPE cable into the existing conduit system
  • Supply and installation of cable assemblies consisting of six 110 kV cable joints and twelve 110 kV cable terminations
  • Supply and installation of replacement temporary cables
  • Disassembly of the overhead lines
  • Conversion of the Seligenstadt substation cable riser

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