Cable diagonal Berlin - Construction of a 6.7 km long cable tunnel with 4 shafts as supply / rescue shafts
As part of the grid reinforcement of the 380 kV cable diagonal Berlin, the construction of a new underground 380 kV line between the final pylon Rudolf-Wissel-Brücke and the Mitte transformer station by 50Hertz Transmission GmbH (50Hertz) is planned. The new line will serve to increase the transmission capacity and will replace the existing line upon completion. As a result of a preliminary study, it was decided to construct a 6.7 km long, underground accessible tunnel tube to accommodate the two cable systems to be replaced.
Spatial classification The 6.7 km long tunnel structure is divided into three successive sections from west to east by four shafts. The tunnel starts on the site of the final mast at the Rudolf-Wissel-Bridge and leads via the intermediate shafts at the Charlottenburg substation and the Tiergarten park to the final shaft at the Mitte substation.