Tunnels

  • Overview
  • Related products
  • Related applications
  • Case studies

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

  • Enhanced VLT® HVAC Drive FC 102
    VLT® HVAC Drive FC 102
    This tough and savvy FC102 drive enhances pump and fan applications in building management systems, and runs outdoors in most climates.
  • VLT® Refrigeration Drive FC 103
    VLT® Refrigeration Drive FC 103
    FC103 is dedicated to controlling compressors, pumps and fans for significant energy savings in refrigeration plants.
  • VACON® 100 FLOW
    VACON® 100 FLOW
    Dedicated functionality that improves flow control and saves energy in industrial pump and fan applications.
  • DrivePro® Life Cycle Services
    Every AC drive application is different. DrivePro® Life Cycle Services is a collection of tailor-made products designed around your needs. From optimized spare part packages to condition-monitoring solutions, customize our products to support your business through the different stages of your AC drive’s life cycle.

Related applications

  • Drives for fans
    Drives for fans in commercial buildings
    With user-friendly interfaces, distributed intelligence and reduced power consumption, Danfoss AC drives optimize the performance of fans.
  • Drives for pumps in commercial buildings
    Drives for pumps in commercial buildings
    Protect your pump and optimize commercial ventilation and air conditioning performance using AC drives.

Case studies

  • The fans of the Doha Metro achieve – maximum energy efficiency and reliability
    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.
  • Copenhagen Cityringen – Tight spaces made manageable
    Copenhagen Cityringen – Tight spaces made manageable
    Cityringen brings a new, completely automated underground line to the center of the Danish capital.