Systemair

[Translate to Germany - Deutsch:] Byfjordtunnel and Mastrafjordtunnel in Norway

[Translate to Germany - Deutsch:]

In the southwest of Norway, between high mountains and deep fjords, you will find the E39 Byfjord- & Mastrafjordtunnel. E39 is the European highway between Trondheim city in Norway and Ålborg in Denmark.

In 1992 the Byfjordtunnel was the world’s longest undersea tunnel, 5 875 meters long and its lowest point is 223 meters below sea level. The Mastrafjordtunnel is 4 424 meters long 133 meters below sea level. Today, more than 20 years after they first opened, these tunnels have been fully refurbished with new safety equipment. Systemair Norway has been a part of this refurbishment and has contributed on several levels. The fans were produced at Systemair in Germany.The tunnel has been open for traffic during the complete refurbishment period. The project’s order value is close to 2 million €.

Our hardware delivery consists of the following equipment:

Byfjord tunnel:

  • 43 MoJet AJ1120 fans with 37 kW IE3 motors, stainless steel version
  • 43 Mounting frames made from stainless steel
  • 43 Special made isolator switches
  • 43 Automatic lubrication systems with 5 years interval for re-filling of grease

Mastrafjord tunnel:

  • 45 MoJet AJ1120 fans with 37 kW IE3 motors, stainless steel version
  • 45 Mounting frames made from stainless steel
  • 45 Special made isolator switches
  • 45 Automatic lubrication system with 5 years interval for re-filling of grease
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