SGen-3000W generator series

High-power generator with proven water/ hydrogen cooling technology


    Fleet-proven design of water-cooled stator bars with hollow stainless steel conductors

    Proven Siemens MICALASTIC® insulation system with GVPI technology

    Low-maintenance, robust and reliable shaft sealing to prevent H2 leaks

    Easily accessible axial coolers for maintenance

    10,000 start/stop cycles without rotor removal for service flexibility

    Simplified ventilation circuit with single-stage axial blower

    Lower foundation loads with smaller footprint

    Performance range 540‐1,300 MVA

    Efficiency up to 99%

    Reliable generator for high-power applications

    Outstanding performance for large gas and steam power plant applications

    Our latest water-/hydrogen-cooled generators benefit from proven design and technologies as well as the application of our building-block approach. They share many features with other products across our portfolio. This  allows us to optimize material selection and performance to provide you with a low-cost, highly efficient, and easily maintained generator for high-power applications.


    Highlights of the SGen-3000W generator series

    Modern grids require high operational flexibility because of the increased integration of renewable energy sources. Our design supports high ramp-up/down rates, frequent start/stops while maintaining low thermal mechanical stress in the stator windings.

    Our proven MICALASTIC® insulation system and Global Vacuum Pressure Impregnation (GVPI) technology ensure maximum electrical endurance and outstanding availability.


    Your benefits:

    - Insensitive to thermal cycling
    - No maintenance required
    - Very low mechanical stress during operation
    - Non-flammable and self-extinguishing; no fire-extinguishing system needed

    Combining GVPI stators with water cooling enables uniform temperatures and low stress levels to enhance operational flexibility. The proven reliability is greater than 99.9% for more than 1,700 stator windings between 10 and 22 kV with an output of up to 1,300 MVA. Our fleet leader has over 150,000 operating hours and 3,320 start/stop cycles.

    Our generators display a high level of common parts across the portfolio (e.g. stator core assembly and rotor). The reusing of parts and components improves the availability of spare parts and increases the quality in manufacturing and assembly at our factory as well as on site.




    Generator technology

    The SGen-3000W implements technology featuring the latest verified design with more than 1,700 GVPI stators in operation across all operating ranges and a fleet-leading water-cooled GVPI stator with over 150,000 hours of operation and more than 3,320 start/stop cycles with no indication of thermal-mechanical stress-related  issues. Hydrogen cooling with water-cooled stator bars makes this generator series ideal for any operating regime.



    Service and maintenance

    The SGen-3000W generator series was designed for simplified service and maintenance. Along with eliminating hydrogen-related generator auxiliaries, various service-friendly design solutions have been implemented. Its components have been tried and tested over decades of operation, achieving a reliability rate of more than 99.9%.  To minimize downtime, the maintenance intervals have been aligned with those of the prime mover and now allow for longer intervals between servicing than ever before. The rotor is designed for lifetime operation without removal for service.



    State-of-the-art manufacturing

    Our reliable and robust generator is the result of our manufacturing and engineering design teams working in close collaboration throughout its development. By applying latest digital technologies, our manufacturing facilities stepped up to create a world-class product for you with excellent lead times.


    Tailor-made for today's flexible operating environment

    The SGen-3000W series utilizes proven technology with endurance verified in the field showing it can withstand the rigorous operating conditions of electrical grids impacted by the increasing integration of renewable energy sources.



    Technical data

    Technical data

    Download table as: PDF Excel
    Frequency 50 Hz 60 Hz
    Apparent power up to 1,300 MVA up to 1,300 MVA
    Efficiency up to 99% up to 99%
    Designed for power factor 0.80 0.85
    Terminal voltage up to 27 kV up to 26 kV
    Design insulation class Class F Class F
    Weight (approx.) up to 425 t up to 390 t

    Gas and steam applications

    Water-/hydrogen-cooled generators for high power demands

    Flexible gas and steam power plants will remain a key component of a demand-driven power supply.
    They form the solid foundation of a diverse and clean energy mix, which is indispensable for meeting the world's current and future challenges.
    Our water-/hydrogen-cooled generators complement the turbine packages of any manufacturer and meet grid and environmental requirements as well as your individual needs.

    Downloads, service and support

    Find out more about our products and services

    You would like a brochure, are interested in technical details or further information? Please visit our download section below, or contact us directly for specific inquiries – we are looking forward to talking to you.


    Proven in commercial operation: SGen-3000W reference highlights

    With over 27 years of fleet operation for the SGen-3000W series we can draw on our experience of more than 120 units.


    Reference map



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