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LTW 77-1.5
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Specification
T 250
LTW 77-1.5
Specification
Generator
Construction
Direct drive synchronous generator Permanent magnets
Rated power
1575 kW
Rated voltage
650 V
Protection class
IP55
Control and safety system
Main brake
Aerodynamic, pitch 3 independent drives
Service brake
Electrical
Rotor lock
Hydraulic
Remote control
Leitwind SCADA
Power electronic
Converter type
4Q-IGBT
Rated power and frequency (grid-side)
3 ~ 690 V + -10% 50 Hz
Power factor (grid-side)
0.9 ind - 1 - 0.9 cap, adjustable
Design Data
Hub height
65 / 80 m
Rated power
1500 kW
Tower
Conical steel tower
Cut-in wind speed
3 m/s
Cut-out wind speed
25 m/s
Yaw control system
Active, electrical
Wind class
IIA according to IEC 61400-1
IIIA according to IEC 61400-1
Number of blades
3
Rotor diameter
77m / 80m
Swept area
4657 m² / 5062 m 2
Rotational speed
18.2 rpm, variable
Blade material
Fibre-glass reinforced/ polyester
Power and rotor speed control
Pitch
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