U4 PlatformU136–4.2MWU151–4.3MW

2

Technical Specifications

Operational data

Rated power

Cut-in wind speed

Cut-out wind speed

Wind class

Operating temperature range

Max. sound power

Rotor diameter

Swept area

Nacelle (for transportation)

Hub (for transportation)

Blade

Tower

Frequency

Generator

Converter

Pitch system

50 / 60 Hz

Permanent magnet, Synchronous

Full capacity

Electric motor drive

50 / 60 Hz

Permanent magnet, Synchronous

Full capacity

Electric motor drive

136 m

14,470 m

L14.7 m x W4.5 m x H4.2 m

L4.5 m x W3.9 m x H4.2 m

66.5 m

95 / 117 mhh

2 2

151 m

17,908 m

L14.7 m x W4.5 m x H4.2 m

L4.5 m x W3.9 m x H4.2 m

74.0 m

95 / 117 mhh

4,200 kW

3 m/s

22 m/s

IEC IA

-15 °C ~ 40 °C

105.9 dB(A)

4,300 kW

3 m/s

22 m/s

IEC S(IIIA+)

-15 °C ~ 40 °C

107.9 dB(A)

U136

Dimensions

Electrical

Main bearing

Gearbox

Dual, cylindrical and tapered roller

2 planetary + 1 helical stages

Dual, cylindrical and tapered roller

2 planetary + 1 helical stages

Drivetrain

Max. weight (for transportation) 78 ton 78 ton

Module

U151

IEC III IEC I

0

00

5000

4500

4000

3500

3000

2500

2000

1500

1000

500

25000

20000

15000

10000

5000

3 4 5 6 7 8 9 10 11 125 10 15 20 25

Power curve AEP

U151

U136

Power [kW] Power Production [MWh]

Wind Speed [m/s]Wind Speed [m/s]

U151

U136

Blades

Outstanding aerodynamic performance

Vortex generator and T-spoiler applied

Low noise through trailing edge serrations

Robust lightning protection system (IEC level 1)

Near maintenance free electrical pitch

Dual independent blade angle detection

Ultra capacitor back-up

Pitch System

Main Bearing System Gearbox

Yaw System

Tower

Dual, cylindrical and tapered roller bearings

Zero-play rigid structure

Minimal non-torque bending moment

Wet-sump lubrication

Active oil cooler

Hydraulic damper support

Electric inching drive for rotor maintenance

Pressure accumulator for fail safe function

Lubricant leakage protection

Tubular steel construction

High corrosion protection level (C5-M)

Stiff and soft towers

Electrical SystemFull AC/DC/AC conversion decoupled from grid

Compliant to various international grid code requirements

Optimal grid integration through support features

LVRT and droop control available

Cooling System

Main Transformer

External passive cooling

No noise emission

Near maintenance free

No oil leakage (dry type)

Up-tower location to minimize electrical losses

GeneratorPermanent magnet, synchronous

Air to water cooling system

High efficiency at rated power (98%)

Fully encapsulated (IP54)