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Power for Germany's longest road tunnel

Power for Germany's longest road tunnel

From supply to commissioning

The Rennsteigtunnel is fitted with complex electro-technical infrastructure. SAG supplied and installed a 10 kV substation for power supply.

In order to safeguard the power supply to the Rennsteigtunnel, public utilities Suhl/Zella-Mehlis contracted SAG to construct a 10 kV substation. The project involved the supply and installation of the substation (manufacturer: Alstom) including protection relays and a 4 MVA transformer. 

The SAG experts supplied and installed the cabling and fittings, both primary and secondary. In addition, zero-voltage switching converters were also installed.

The commissioning of the entire system including the calibration of protection systems was performed according to the client's specifications.