Technical Datas of Wind Turbines - SRC 31 - 250 / 50 KW

        SRC 31 - 250 / 50 KW
TURBINE
CONFIGURATION 3 BLADES, HORIZONTAL AXIS, UPWIND
RATED POWER 250 KW
DESIGN LIFETIME 20 YEARS
HUB HEIGHT 30 M 36 M 45 M  
OVERALL WEIGHT 28 M.TONS 32 M.TONS 44 M.TONS  
NACELLE WEIGHT 8.5 M.TONS 8.5 M.TONS 8.5 M.TONS  
ROTOR WEIGHT 5.5 M.TONS 5.5 M.TONS 5.5 M.TONS  
TOWER WEIGHT 14 TONS 18 TONS 30 TONS  
ROTOR
DIAMETER 31 M
SWEPT AREA 755 M2
VNOM MAIN GENERATOR 1509 RPM
VNOM SMALL GENERATOR 1006 RPM
TILT ANGLE
ROTARY DIRECTION CLOCKWISE
POWER REGULATION STALL
TIP SPEED 66.92 M/S
BLADE
NO. OF BLADES 3
LENGTH 13.4
BLADE MATERIAL GLASS REINFORCED POLYESTER
AIRFOIL SECTION NACA63-4XX AND FFA-W3
HUB ATTACHMENT EXTENDER - FLANGE MOUNTING
WEIGHT 725 ± 25 KGS
OPERATIONAL DATA
CUT-IN WIND SPEED 4.0 M/S
CUT-OUT WIND SPEED 25 M/S
RATED WIND SPEED 13 M/S
SURVIAL WIND SPEED 67 M/S
ROTOR SPEED 41.23 RPM
TOWER
TYPE 24 SIDES - CONICAL
SURFACE SAND BLASTED, HOT SPRAY GALVANISED AND PAINTED
HEIGHT 28.6 / 34.6 / 43.7 M
SECTIONS 4,5 & 6
ASSEMBLING EACH SECTION OVER LAPPING SYSTEM-BOTTOM WITH FOUNDATION FLITCH PLATE MOUNTED
LADDER INSIDE THE TOWER
SAFETY FALL PROTECTION CLIMBING SYSTEM
MATERIAL IS 2062 GRADE B
GENERATOR
TYPE ASYNCHRONOUS, DUAL SPEED, 3 PHASE, 4/6 POLES
MIN. AMBIENT TEMPERATURE -20°C TO 40°C
NOMINAL OUTPUT 250 / 50 KW
DESIGNED OUTPUT 20% OVERLOAD FOR 30 MINUTES
CURRENT 395 / 85 A
VOLTAGE 400 V AC - 50 Hz
TOLERANCE IN VOLTAGE ± 10%
FREQUENCY 50 Hz
TOLERANCE IN FREQUENCY ± 5%
NOMINAL SPEED 1509 /1006 RPM
POWER FACTOR (50 % LOAD - 0.82) (100% LOAD - 0.88)
COUPLING FLEXIBLE
INSULATION CLASSIFICATION H
PROTECTION CLASSIFICATION IP 54
TEMPERATURE PROTECTION PT 100
FRAME SIZE CTFG - 355 M
TYPE OF COOLING FAN COOLED
GEAR BOX
TYPE 2 STAGE HELICAL
RATIO 1: 36.592
INPUT SPEED 41.23 RPM
OUTPUT SPEED 1509 RPM
NOMINAL EFFECT 436 KW
OIL VOLUME 70 LITRE
YAW SYSTEM
TYPE ELECTRICAL YAW GEAR UNIT WITH FRICTION BRAKE AND ELECTRO MAGNETIC BRAKES
METHOD ACTIVE YAW, ELECTRICAL
CONTROL WIND VANE
SLEWING RING BALL BEARING WITH INSIDE COGGING
NUMBER OF YAW GEARS 1 NO.
NUMBER OF YAW BRAKES 2 NOs.
NOMINAL ROTATION SPEED 5.5 RPM
WEIGHT 1100 KG
YAW MOTOR
TYPE COMBINED PLANET AND PARALLEL GEARS
RATIO 1 : 1201
TYPE ASYNCHRONOUS, IP 54,64
VOLTAGE / FREQUENCY 3 x 400 V
POWER RATING 0.37 KW
BRAKE & SAFETY SYSTEMS
AERODYNAMIC BRAKES TIP BRAKES ON EACH BLADE
MECHANICAL BRAKE FAIL SAFE BRAKE ON HIGH SPEED SHAFT
BRAKE TORQUE 2.0 TIMES OF NOMINAL TORQUE
AUTOMATIC SHUTDOWN TRIGGERED BY OVER SPEED
HIGH WIND SPEED
GRID FAILURE
ALL OTHER FAULT CONDITIONS
NACELLE COVER
TYPE FIBRE GLASS REINFORCED POLYESTER
CONTROL SYSTEM
TYPE MICRO PROCESSOR
USER INTERFACE SCADA
PROTECTION HRC FUSES, MCCB, MCB, VARISTORS
SOFT START THRISTORS
ELECTRICAL GRID CONNECTION
VOLTAGE FLUCTUATIONS ±15 %
FREQUENCY VARIATIONS -5% TO +4%
MAXIMUM ASYMMETRIC VOLTAGE (PHASE TO GROUND) FOR 60 SEC 2 %
MAXIMUM ASYMMETRIC CURRENT 10% OF NOMINAL CURRENT
MAXIMUM SHORT CIRCUIT CURRENT 27 KA AT 440 V AC (PHASE TO PHASE)
TURBINE WILL SHUT DOWN IMMEDIATELY, WHEN THE SET POINT LIMITS / SET VALUES FOR THE CRITICAL PARAMETERS ARE EXCEEDED.
CUT-IN SYSTEM SOFT-STARTERS USING THYRISTORS
POWER FACTOR COMPENSATION EXCLUDING TRANSFORMER
TYPE SWITCHING THROUGH MULTIPLE CAPACITOR BANKS.
VOLTAGE 3 PHASE - 400 V AC
POWER FACTOR AT NOMINAL POWER 0.92 (LAGGING) TO 0.99 (LEADING)
ENVIRONMENTAL SPECIFICATIONS
TEMPERATURE RANGE FOR OPERATION -10 DEG C.... TO +45 DEG C
TEMPERATURE RANGE FOR STRUCTURE -20 DEG C....TO +50 DEG C
CHARACTERISTIC TURBULENCE INTENSITY (AS PER IEC 61400-1 FOR 15 M/S) 18%
AIR DENSITY 1.225 KG/ M3
LIGHTNING PROTECTION IN ACCORDANCE WITH EN 61400-24
DESIGN
CLASS IEC CLASS
TYPE II B
CERTIFICATIONS
CERTIFIED CE
UNDER CERTIFICATIONS UL
NOISE LEVEL
Noise @ 5 m/s at 100 m 50 dbA


Disclaimer: Technical Specification, Power Curve etc. are subject to change without notice due to continual improvement with no liability attached to NEPC India Ltd or its affiliates