Tunnels

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  • Related products
  • Related applications
  • Case stories

Safe travels

Danfoss AC drives work with the complex HVAC systems in underground subway and train services as well as road tunnels. Providing reliable operation of cooling, ventilation and safety systems, our solutions ensure pollution-free and safe environments for millions of passengers the world over.

  • Ensures continued operation of smoke extraction fans in the event of a fire
  • Multi-zone feature allows for independent speed controls and airflow directions
  • Secure uptime with condition-based monitoring
  • Continuous control of motor cable connection to motor even in standby
  • State-of-the-art EMC performance even with long motor cables

Related products

Related applications

Case stories

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    The fans of the Doha Metro achieve – maximum energy efficiency and reliability

    Tailored for HVAC, flexible, modular and adaptable applications, the frequency control has played a key role in the ventilation system. It was the perfect fit, both in terms of EMC requirements, safety, harmonics, long cable lengths and dimensions, as well as its ability to function in temperatures of up to 50°C without loss of power.

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    Copenhagen Cityringen – Tight spaces made manageable

    Cityringen brings a new, completely automated underground line to the center of the Danish capital.