protecfire GmbH - logo - Fire Suppression


Fire Suppression Systems for Wind Turbines

vds fire suppression - fire protection VdS
wind turbine fire protection system


“Operations were interrupted for approximately 150 days; the total loss amounted to approximately EUR 2 million.”

Your protection, your gain!

  • Protection against total loss of the wind turbines
  • Shorter downtimes
  • Greater acceptance from investors
  • Insurability of the wind turbines
  • More favorable insurance premiums
  • Avoidance of damage to image
  • Construction conditions, e.g. in wooded areas
  • Protection of the environment
  • Essential components of the system in wind turbines
  • Extinguishing agent container with internal control unit
  • Pneumatic trigger elements
  • Fine-spray nozzles
  • Control valves
  • Design of the extinguishing concept

In the design of the extinguishing concept, the focus is not on protecting the nacelle as an area but instead on protecting individual objects. In wind turbines, the following critical points are to be protected:

  • Control cabinets
  • Transformers
  • Generators / slipring
  • Brakes and clutches
  • Hydraulics

Fires can thus be detected quickly and efficiently so that a spread of the fire source is prevented in the initial phase.

vds fire suppression - fire protection VdS

Our Fine Spray fire protection is certified to protect:

Room/Installation wind turbine

  • Nacelle with generator, transformer, hydraulic systems, gearbox, brake, azimuth drive
  • Hub with pitch drive and generator, if applicable
  • Raised floors with oil sump and cable and electrical installations
  • Central electric power substation, switchgear rooms (without transformer)
  • Tower base/platform with available installations, if applicable

Installation protection, e.g.,

  • Control, inverter, switchgear cabinets (LV/MV), closed
  • Transformer
  • Control, inverter, switchgear cabinets (LV/MV), open
  • Hydraulic system, open

Functionality and operation of a fine-spray extinguishing system

The extinguishing system will be automatically activated by a pneumatic trigger in the event of a critical rise in temperature (e.g. 30° above the maximum expected operating temperature). Our fire-fighting system is a fine-spray extinguish ing system which uses special nozzles to spray the extinguishing agent as a fine mist.

The droplet size selected is large enough to ensure that the droplets have enough kinetic energy to reach the source of the fire. This is particularly important in wind turbines as there may be air flows in the nacelle which prevent this.
The enormous reaction surface of the mist droplets in relation to the quantity of extinguishing agent means that the fire is quickly deprived of a great deal of its energy. The temperature level therefore falls rapidly, preventing re-ignition. The cooling effect disrupts the thermal reaction conditions in the seat of the fire, thereby reducing the reaction speed so that the fire will be extinguished.

In addition to the cooling effect, the fine-spray technology also has a smothering effect, as is the case with fine water mist fire extinguishing.

To intensify the extinguishing effects described, the extinguishing agent contains a foam-forming additive. The purpose of this is to achieve greater adhesion and thus more successful extinguishing of the burning materials. This mixture plays a crucial role in the effectiveness of the system for specific risks in areas where there are combustible liquids.

Ownership Advantages:

  • VdS Approved 
  • No pressure
  • No electricity
  • (nearly) maintenance free
  • Ultrafast detection & extinguishing
  • Hybrid system (liquid/gas)
  • Works in all angles and positions
  • No false alarms – due to patented Spy detector
  • Robust fire suppression system (temp from -30ºc to 80ºc)


Go to recommended product:

Developed with wind turbines leading manufacturers, Firespy is a proved and reliable system.

Go to recommended product:

Protect more than 1 compartment with the same tank with directional valves.
Electrical Cabinets | Hydrogen and electric Buses |Wind Turbines |others