Siemens Energy Global GmbH & Co. KG

Siemens EnergyModel SST-5000 -Utility Steam Turbine Package

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A steam turbine with short start-up times and variable start-up modes to ensure grid stability. Siemens Energy Steam Turbines of the SST-5000 series are operated in combined cycle power plants (CCPP) and in steam power plants (SPP).  
The SST-5000 steam turbine combined with a gas turbine, is able to achieve a net plant efficiency of more than 64 percent in combined cycle applications.

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  • Power output:
    CCPP – 
    120 to 700 MW
    SPP – 200 to 500 MW (SPP)   
  • Efficiency:
    CCPP – 
    64% (CCPP)
    SPP – 43% for subcritical variant, 46,4% for supercritical variant
  • Frequency50 or 60 Hz
  • Main steam conditions
    CCPP – Inlet pressureup to 177 bar / up to 2,567 psi  
    Inlet temperature up to 565 °C / up to 1,050 ° F
    SPP – Inlet pressure up to 260 bar / up to 3,770 psi  
    Inlet temperature up to 600 °C / up to 1,112 ° F
  • Reheat steam conditions
    CCPP:610 °C / 1,130 °F
    SPP:
     610°C / 1,130°C
  • Last stage blade length: 
    50 Hz – 66 cm to 142 cm / 26 inches to 56 inches
    60 Hz – 66 cm to 103 cm / 26 inches to 41 inches