Walk-In Step-Up Transformer Substation - NAUVA


Walk-In Step-Up Transformer Substation - NAUVA

Step-up transformer substation designed for renewable energy applications (co-generation, hydraulics, biomass, wind and solar) and energy storage. These substations are used to convert, distribute and meter produced energy and to protect operations and the network.

Main characteristics

Concrete enclosure comprising:

  • 50 to 3150 kVA step-up transformers
  • LV main distribution board
  • A GRANY modular MV board or NOGARIS fully insulated compact board (up to 42 units per substation)
  • Substation protection and automations (monitoring systems, remote management systems, DEIE information and exchange device, GTC centralised technical management and modbus/Ethernet/optical fibre converter)
  • MV network management equipment: ITI/PASA box or fault detection
  • Auxiliary substation power devices: 48 Vdc backup source, MV power supply unit for auxiliaries equipped with a dry step-up transformer, dry LV/LV transformer
  • Substation accessories: substation lighting, Enedis metering, heating, video monitoring, alarms, safety accessories, inverters, active filters, etc.


  • Sturdy substation: proven on-site manufacturing process certified by the energy distributor. Resistance to excess internal pressure that may occur in the event of an electric arc
  • Customisable substation: variable transformer position (right or left)
  • Attractive: optimised integration into all environments
  • CAHORS synergy: all substation components are designed and manufactured within the group


  • Renewable energy

More information

PDF Downloads

Download product file

Do you want to know more about our Walk-In Step-Up Transformer Substation - NAUVA solutions ?