Stadtwerke Forchheim operates the energy supply network for the City of Forchheim, Germany, and is actively expanding it to ensure reliable supply. As part of this effort, an additional feed-in will specifically strengthen the 20 kV city network. Currently, Forchheim's distribution network is supplied by two 31.5 MVA transformers operated by Bayernwerk Netz GmbH. The changing requirements for the distribution network necessitate a second connection to the higher-level network. For this purpose, a new substation, Forchheim West, is being constructed in collaboration with Bayernwerk GmbH. This project includes the technical equipment of the new switchgear building for the 20 kV switchgear on the site of the new Forchheim West substation. 

Project Scope:

• 20 kV switchgear, including auxiliary system delivery, installation, and commissioning 
• Delivery of combined devices for medium-voltage switchgear protection and control 
• Integration into the control system 
• Cable installation work

• New medium-voltage switchgear: blue GIS 8DAB 24 double busbar system (18 fields)
• Clean Air as an insulating medium, consisting of naturally occurring gases, free of SF6 or other F-gases
• New SIPROTEC 5 protection technology (7SX85)
• Construction of the raised floor, including base frames and cable support framework for the new switchgear
• Delivery of the control cabinet (A8000)
• Delivery of the 0.4 kV auxiliary power system SIVACON S1
• Delivery and installation, including all cabling work up to the 110 kV transformer of the upstream network operator
• Parameterization and commissioning