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General
design acc. NEN 6096
cut in wind speed
3 m/sec.
rated wind speed
12 m/sec.
cut out wind speed
25 m/sec.
survival wind speed
60 m/sec.
nominal power 80 kW
grid voltage
400V ±10%
grid frequency
50/60Hz ±3Hz
specific power
315 W/m2
calculated lifetime min. 20 years
Rotor
number
of blades 2
rotor
position
upwind
angle
of the main shaft 7º with
horizon
diameter
18 m
swept
area
254 m2
speed
variable
60 -120 rotations per minute
power
regulation passive:
blade-angle adjustment
active:
fully variable mutator system
min.
blade-angle 1.0
cone-angle
180
-164º (flapping range)
direction
clockwise
location
main bearing attached
to gearbox
Blades
blade
length
7,8 m
weight
one blade 86kg
chord
500-625mm
twist
5º
material
carbon fibre reinforced epoxy
mounted
flexible
Gearbox
number of stages
2
weight
700kg
ratio
1:20
Generator
Type asynchronous
nominal
power
80 kW
number
of poles 4
nominal
voltage 230/400
volt
frequency variable: 40 - 80 Hz.
weight 450kg
protection
IP 55
Grid
connection
converter
diode bridge - mutator
converter principle
AC - DC - AC
power supply
400 V / 3 phase / 50 or 60 Hz.
(deviating voltage and frequency are available as an option)
Tower
type cylindrical tube
number
of sections 3
hub
height
31 m
or 41 m
material
hot dip galvanised steel
location ascent external
Controller
control
by
PLC
remote
monitoring optional
Yaw
system
system active
signal
based on wind
vane
driven
by e-motor with worm-wheel reduction
power
yaw-motor 0,55 kW
yaw
speed
1,2º/sec.
yaw
bearing
crown-bearing; externally geared
yaw-break
constant friction-break; 4 pcs.
safety
first
safety system passive
blade pitch
-
activation
rotor
speed (110 rpm)
second
safety system yawing
out of the wind
-
activation
rotor speed (120 rpm)
excessive
vibrations
failure
anemometer or wind vane
failure
in one of PLC´s
grid
failure
too
high generator or inverter temperature
fault
in yawing system
blocking
system
-
rotor blocking system pin
in high speed shaft; for service purposes- activation manual
weights
rotor
900 kg
nacelle including rotor
3000 kg
tower excluding nacelle
10000 kg
Measured
actual power
The
curve data are valid for standard atmospheric conditions of 15° C air
temperature, 1013 mbar air pressure and 1.225 kg/m 3air density, clean
rotor blades and horizontal undisturbed air flow.
The
curve data are valid for standard atmospheric conditions of 15° C air
temperature, 1013 mbar air pressure and 1.225 kg/m 3air density, clean
rotor blades and horizontal undisturbed air flow.
The
annual energy production data for different annual mean wind speeds at
hub height are calculated from the above power curve data assuming a
Rayleigh wind speed distribution, 100% availability and no reductions
due array losses, grid losses, or other external factors effecting the
production. 
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