
SG 3.4-145
Onshore wind turbine
The new variant of Siemens Gamesa’s top performing 3.X platform, the SG 3.4-145 wind turbine is designed to maximize the Annual Energy Production in its projects. Its addition to our portfolio is a clear response to the needs and expectations of the wind energy developers and investors. The SG 3.4-145 is optimized to deliver the lowest Levelized Cost of Energy (LCoE), through a balance of performance, minimization of BoP costs, and efficiency in the WTG design.
Would you like to know more about the SG 3.4-145? Are you interested in partnering up with Siemens Gamesa? Please contact us!
marketingindia@siemensgamesa.com | comercial_consultas@siemensgamesa.com- Optimized design for low wind conditions
- Benchmark solution with high capacity factor
- 48% more AEP than the previous SG 2.2-122
- Up to 3.6 MW with flexible rating strategy
For low and medium wind conditions
Model | Rotor Diam. | Wind type |
---|---|---|
SG 5.0-145 | 145 m | For medium winds |
SG 6.6-170 | 170 m | For low and medium winds |
General details | |
---|---|
Rated power | 3.465 MW |
IEC class | IEC III/S |
Flexible Power rating | 3.0-5.0 MW |
Control | Pitch and variable speed |
Standard operating temperature | Range from 0ºC to 45ºC (with de-rating) |
Rotor | |
---|---|
Diameter | 145 m |
Swept area | 16,513 m² |
Power density | 209.8 W/m² |
Blades | |
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Length | 71 m |
Airfoils | Siemens Gamesa |
Material | Fiberglass reinforced with epoxy resin |
Tower | |
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Type | Multiple technologies available |
Height | 127.5 m and site-specific |
Gearbox | |
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Type | 3 stages |
Generator | |
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Type | Doubly-fed induction machine |
Voltage | 690 V AC |
Frequency | 50 Hz |
Protection class | IP 54 |
Power factor | 0.95 CAP-0.95 IND throughout the power range (1) |
(1) Power factor at generator-output terminals, on low voltage side before transformer input terminals.


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