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ENERCON E-70 E4

Design
Onshore/Offshore Onshore
Concept Gearless, variable speed, single blade adjustment
Wind class IEC IA / IEC IIA
Rated power 2,300 kW
Cut-in wind speed 3.00 m/s
Cut-out wind speed 25.00 m/s
Cut-out wind speed 28 - 34 m/s (with ENERCON stormcontrol*)
Main bearing Double row tapered/cylindrical roller bearings
Rotor
Type Upwind rotor with active pitch control
Rotational speed Variable, 6 - 21 rpm
Number of blades 3
Rotor diameter 71.00 m
Swept area 3,959 m2
Blade material GRP (epoxy resin); Built-in lightning protection
Tower
Hub height 57.0 / 64.0 / 75.0 / 85.0 / 98.0 / 114.0 m
Gear system
Electrical
Generator type ENERCON direct-drive annular generator
Grid feed ENERCON inverter
Control & Safety
Pitch control ENERCON single blade pitch system; one independent pitch system per rotor blade with allocated emergency supply
Brake systems
  • 3 independent pitch control systems with emergency power supply
  • Rotor brake
  • Rotor lock
Yaw system Active via yaw gear, load-dependent damping
Remote monitoring ENERCON SCADA
Operation
Dimensions & Weight
Power

Power coefficient

References

[1]

ENERCON GmbH. ENERCON product overview. URL: http://www.enercon.de/fileadmin/Redakteur/Medien-Portal/broschueren/pdf/en/ENERC.... [Date Accessed: 29/06/2016].