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

Senvion Technology

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

The Eco Blade Control generation of turbines, based on the EBC platform, was introduced in 2015. It 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 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


    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
          Nominal speed1,650 1/min
          Converter typeFull converter with DC intermediate circuit

            Sound power level

            Maximum sound power level105 db (A)

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

              Brochures 4.XM series

              Title File Size
              Senvion - 4.XM series PDF 1.4 MB
              Senvion - Portfolio Overview PDF 1.6 MB
              Senvion - Service PDF 1.9 MB

              Contact us

              Senvion Sales
              Überseering 10
              22297 Hamburg