WES - Model 250 Series - Wind Turbine
From Wind Turbine
The WES250 is a two bladed, high performance, reliable midsize 250kW wind turbine with a rotor diameter of 30 meters.The mechanical part of the WES250 is based on the original, proven design from 1983. For the electrical parts providing power conversion and control, the latest technology is used.WES250 turbines are manufactured and exported by WES in the Netherlands, and are sold, installed and maintained all over the world by a global network of certified and trained dealers.
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Specification
WES250 General
- Supplier/manufacturer WES BV
- Life expectancy 20 years
- Maintenance Twice a year
- Rated power 250 kW
- Cut in wind speed <3 m/sec. (6.7mph)
- Cut out wind speed 25 m/sec. (56mph)
- Rated wind speed 13 m/sec. (29mph)
- Survival wind speed 60 m/sec. (134mph)
- Passive power regulation Pitching (blade-angle adjustment)
- Active power regulation Fully variable back-to-back IGBT system
- Noise emission at 8 m/s 45dB(a) at 100m
- Operating temperatures From -20°C up to +40°C
WES250 Applied standards
- Degree of protection IP55
- Standards NEN1010 (electrical) EN50308 (safety) EN6096 (wind turbines) UL1741 (anti islanding) IIEC61346-2000 (cabinet)
- CE-mark Yes
WES250 Electrical
- Grid voltage 400V ±10%
- Grid frequency 50/60Hz ±3Hz
- # Phases 3 phase + neutral
- Specific power 354 W/m2
- Converter type Back-to-back IGBT converter
WES250 Blades
- Number of blades 2
- Diameter 30 m
- Position Upwind
- Direction Clockwise
- Angle of the main shaft 7° with horizontal
- Swept area 707 m2
- Speed Variable 35 -75 rotations per minute
- Power regulation Passive pitching (blade-angle adjustment)
- Min. blade-angle 1
- Flapping angle 183 -170,5°
- Blade length 13,4 m
- Weight (1 blade) 315kg
- Chord 500 – 1.200mm
- Twist 15°
- Mounted Flexible
WES250 Gearbox
- Brand Siemens (Flender)
- Number of stages 2
- Weight 1850kg (incl. oil)
- Ratio 1:26,60
WES250 Generator
- Brand ABB
- Type A-synchronous
- Nominal power 250 kW
- Number of poles 6
- Nominal voltage 230/400 volt
- Frequency Variable: 25 - 75 Hz.
- Weight 1320kg
- Protection IP 55
WES250 Tower
- Type Tubular
- Number of sections 3 or 4
- Tower height 30, 39, 48m
- Material Painted steel
- Location ladder Internal
WES250 Controller
- Control by IPC (Beckhoff)
- Remote monitoring Yes
- Data logging Optional
WES250 Yaw-system
- Yaw system Active
- Signal from Wind vane
- Driven by Electro motor with worm-wheel reduction
- Power yaw-motor 2x 1,5 kW
- Yaw speed 0,77°/sec.
- Yaw bearing Single ball bearing; externally geared (Rothe Erde)
- Yaw-brakes Constant friction-brakes; 4 pcs.
WES250 Safety
- First safety system Passive blade pitching
- activated by: rotor speed (70 rpm)
- Second safety system Yawing out of the wind
- activated by Rotor speed (>90 rpm)
- Excessive vibrations
- Failure anemometer or wind vane
- Grid failure
- Fault in yawing system
- Blocking system
- Rotor blocking system Pin in high speed shaft; for service purposes
- Activation Manual
WES250 Weights
- Rotor incl. blades 3.600 kg
- Nacelle excluding rotor 7.100 kg
- Control cabinet 600 kg
- Tower 12.500 kg (30 m. tower)
WES250 Material specifications
- Blades Carbon and fibre glass reinforced epoxy
- Nacelle/rotor Steel
- Covers Polyester
- Tower Steel (painted)
- Foundation Concrete Block with steel anchor
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