4.2M140 EBC

Efficient energy production in low and medium wind conditions

The 4.2M140 is a powerful turbine in our four megawatt platform for low and medium wind-speed sites. With its bigger rotor, a rated power of 4,200 kW and highly efficient rotor blades it can achieve a high annual energy production. The rotor blades are based on our Rodpack technology which is already used in the 3.XM series. With an updated gearbox design, significantly longer blades and an advanced pitch bearing, as well as a generator and full converter system, the 4.2M140 stands for more efficiency, higher availability and lower service costs.

  • Nominal power: 4,200 kW
  • Rotor diameter: 140 m
  • Hub height: project specific

  • Wind class: Low to Medium Wind
  • Operating temperature range: -20 – +45 °C
  • Rotor surface: 15,394 m²
  • Rotor Blades

    Rodpack technology for highly efficient rotor blades
  • Wind class

    High performance at low to medium wind speeds
  • Modularity

    Project specific hub heights available

Technical data 4.2M140 EBC

Design data

Nominal power4,200 kW
Cut-in wind speed3 m/s
Cut-out wind speed22 m/s
Operating temperature range-20 – +45 °C *
  • * *de-rating above 35°C possible


Hub heightWind classDIBt Wind zone
Project specificIEC S (based on IEC IIB)-


    Diameter140 m
    Rotor area15,394 m²
    Rotor speed4.6 – 10.5 1/min
    Power controlElectrical pitch

      Rotor blade

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

        Electrical system

        Nominal power4,200 kW
        Nominal frequency50 Hz/60 Hz
        GeneratorSquirrel Cage Induction Generator
        Generator protection classIP 54
        Converter typeFull converter with DC intermediate circuit

          Sound power level

          Maximum sound power level105 db (A)

            Power curve

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

            Senvion Technology

            The 4.XM series features a well-proven modular and evolutionary technology concept based on the Senvion 3.XM series. 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


            Title File Size
            Technical specifications 4.2M140 PDF 90 KB
            Senvion - Portfolio Overview PDF 200 KB

            Contact us

            Senvion Sales
            Überseering 10
            22297 Hamburg