The right connection.
Whatever your plans are.  

SPIE SAG – Your reliable partner for projects of any size.  

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.