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. With Smart Power Mode the nominal power of the 4.2M140 can be maximized to 4,500 kW.

  • 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
  • Smart Power Mode

    Increased nominal power to 4,500 kW
  • Rotor Blades

    Rodpack technology for highly efficient rotor blades
  • Modularity

    Project specific hub heights available

Technical data 4.2M140 EBC

Design data

Nominal power4,200 kW / 4,500 kW *
Cut-in wind speed3 m/s
Cut-out wind speed22 m/s
Operating temperature range-20 – +45 °C *
  • * with Smart Power Mode
  • * de-rating above 35°C

Certification

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

    Rotor

    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 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) / 106 db (A) *
          • * with Smart Power Mode

          Power curve

          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.

          Smart Power Mode

          With our tried-and-tested and modular technology, Smart Power Mode enables the optimization of the wind turbine without component changes. By evaluating the project conditions and adjusting operational parameters, the nominal power can be increased by 300 kW. This maximizes the output from 4.2 MW to 4.5 MW. A combination of both Smart Power Mode and standard operation mode can be implemented to allow the best possible output from each wind farm.

          Smart Power Mode
          Nominal Power4,500 kW
          Max. sound power level108 db [A]


          Requirements

           
          • Temperature < 45°C
          • Wind and loading conditions evaluation
          • Grid compatibility
           
          Power Curve - Smart Power Mode 4.2M140

          Eco Blade Control

          The Eco Blade Control (EBC) 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

            Azimuth

            • 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

            Tower

            • 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

          Downloads

          Title File Size
          Technical specifications 4.2M140 PDF 170 KB
          Senvion - Portfolio Overview PDF 1.6 MB