Val SarentinoTunnels Individual lighting points management with alternate LED strings as to extend lifetime
Management of the single light point with alternating LED plates to extend its lifetime - Val Sarentino TunnelsManagement of the single light point with alternating LED plates to extend its lifetime - Val Sarentino TunnelsManagement of the single light point with alternating LED plates to extend its lifetime - Val Sarentino Tunnels

An innovative lighting control system has been designed and built within the Grafenstein (1520 m) and Goldegg (2000 m) tunnels, which are part of the new national road linking the Val Sarentino to Bolzano.

The project makes the journey faster and safer, and replaces old lighting over 15 tunnels, no longer suitable for modern traffic and the daily passage of 1400 workers and 400 students. Inauguration was in December 2016 with a total investment of about 63 million euros.

As said, the peculiarity lies in the fact that there are two LPCs nodes for each permanent lighting luminaire, each connected to a LED string. Each LPC node belongs to a different group, associating it with particular event scenarios (controlled through tunnel's SCADA software) and allowing to turn it off and on once in a while, dimming the one switched-on through PLC. The use of a LED string or the other is alternating each month with the goal of doubling luminaires’ lifetime.

Thanks to the flexibility of Reverberi devices, all these configurations have been performed directly from the control panel and can be modified in the future via the Maestro software installed in the Tunnel Control Room.

Stats for Val Sarentino tunnels:

  • No. 4 switchboards each with DIM, SDLx and 3 LPM devices
  • No. 4 veil luminance sensors, one for each tunnel entrance
  • No. 192 reinforcement lighting LED luminaires with powers of 305W, 205W, 135W, 105W, 75W, 45W with LPC module
  • No. 174 permanent lighting 65W LED luminaires with twin LPC module