3.4M140 EBC

More renewable energy in the grid

The 3.4M140 EBC was developed for low-wind locations. With a rotor diameter of 140 m, a swept surface of 15,394 m² and hub heights between 110 and 130 meters, it achieves a 20% higher energy yield compared to our 3.0M122 turbine. The Eco Blade Control label (EBC) represents significant design and performance improvements including an extended operational lifespan of 25 years, a low, maximum sound power level of 104 dB(A) and a light-weight blade construction. The 3.4M140 EBC is also available as a cold-climate version which can be operated in extreme conditions at temperatures of down to -30°C.

  • Nominal power: 3,400 kW
  • Rotor diameter: 140 m
  • Hub height: 110 / 130 m

  • Wind class: Low to Medium Wind
  • Operating temperature range: -20 – +40 °C
  • Rotor surface: 15,394 m²

Senvion Technology

The 3.XM series features a well-proven modular and evolutionary technology concept. The smart and robust design results in a highly efficient and reliable turbine concept: from the aerodynamically optimized rotor blade, compact and efficient drivetrain, advanced control technology right through to the transformer. This flawless interplay delivers high energy yields while keeping sound emissions low.

The EBC platform - Dependable, durable and suitable for higher wind classes

The Eco Blade Control generation of turbines boasts high yields at low-wind locations, an outstanding operational lifespan of 25 years, and a low sound power level. Light weight construction of the blade due to our Rodpack Technology and an advanced load management technology completes the benefits of this turbines.

  1. 1

    Generator/frequency converter

    • Variable speed range for optimum yields
    • Fully encapsulated generator with air-air heat exchanger
    • Optimum temperature inside generator, even at high ambient temperatures
    • Water-cooled converter power electronics for optimised cooling
    • The converter and controllers are located in the tower base, leaving even more space in the nacelle and making operation that much easier

  2. 2

    Gear system

    • Planetary/spur gear
    • Satisfies stringent demands in terms of service life and operating smoothness in line with Senvion gear specifications
    • Elastomeric torque arm bearing for structure-borne sound insulation
    • Low temperature thanks to efficient oil cooling system
    • Three-stage oil filter system for excellent oil quality

  3. 3

    Rotor blade

    • Individual blade profiles for optimal aerodynamics of the rotor
    • Robust aerodynamic design guarantees best possible performance, even in difficult wind conditions or when dirty
    • Proven quality, tested statically and dynamically in accordance with IEC specifications
    • Fully integrated lightning protection in accordance with IEC protection class I

  4. 4

    Pitch system

    • Virtually maintenance free electrical system
    • High-quality, large blade bearing with permanent track lubrication and external gearing
    • Integrated deflector in the spinner as protection from the elements
    • Maximum reliability through redundant blade angle detection with two independent measuring systems
    • Fail-safe design with independent drive and control systems for each rotor blade

  5. 5

    Rotor bearing and rotor shaft

    • High quality spherical roller bearing with bearing with perfectly fitted bearing housing and permanent lubrication for maximum service life
    • Rotor shaft aligned with transfer of torque

  6. 6


    • Four-point contact bearing with external gearing, powered by top quality high-performance gear motors
    • Holding brakes with hydraulic pressure accumulator for fail-safe function relieve drive systems when inoperative and stabilise nacelle
    • Minimum stress on the drive trains thanks to low friction of four-point bearing and brake release during wind tracking

  7. 7

    Holding brake

    • Generously dimensioned disc brakes hold rotor safely
    • Soft brake function for minimum wear of gearbox

  8. 8


    • Natural frequency of tower higher than rotational speed of rotor (rigid design) ensures minimum stress on tower and nacelle
    • No speed restrictions, as no frequency interference
    • Maximum component safety thanks to L-shaped flange and stress-optimised door opening

Technical data 3.4M140 EBC

Design data

Nominal power3,400 kW
Cut-in wind speed3 m/s
Nominal wind speed11 m/s
Cut-out wind speed22 m/s
Operating temperature range-20 – +35 °C
Operating temperature range optional-30 – +40 °C


    Hub heightWind classDIBt Wind zone
    110 mIEC IIIA-
    130 mIEC IIIA-


      Diameter140 m
      Rotor area15,394 m²
      Rotor speed6.3 – 9.6 1/min (+25 %)
      Power controlElectrical pitch

        Rotor blade

        Blade length68.5 m
        TypeGlass fiber-reinforced plastic (GFRP)
        Max. chord width4 m

          Electrical system

          Nominal power3,400 kW
          Nominal voltage750 V
          Nominal frequency60 Hz
          GeneratorInduction generator (squirrel cage rotor)
          Generator protection classIP 54
          Speed range780 – 1,440 1/min
          Converter typeFull converter with DC intermediate circuit

            Sound power level

            Maximum sound power level104 db (A)

              Power curve

              Please contact the relevant company within the Senvion Group to check the availability of a given product in your country.


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              Technical overview 3.4M140 EBC PDF 249 kB
              Senvion - Portfolio Overview PDF 200 KB