7.2 MW SST-400 STEAM TURBINE
Steam Turbine
Siemens Steam Turbine
SST-400 Steam Turbine

STEAM TURBINE SPECIFICATIONS

The condensing turbine SST-400 is designed as follows:
• blading rows are with shrouding and sealed by labyrinth strips two last rotor blading rows are without shrouding
• the HP steam is supplied to the turbine via an emergency stop flap by two control flaps; control flaps are actuated by high-pressure actuators with electro-hydraulic transducers
• the steam expands to a low pressure (vacuum)
• the rotor is forged from a solid piece, stress relieved after machining
• the symmetrical design of turbine casing and stationary blade carriers prevent distorted expansion
• the working medium contacts all sides of asymmetrical turbine casing and stationary blade carriers

STEAM TURBINE SPECIFICATIONS

TURBO SET OUTPUT norm.: 7,42 MW

SPEEDS:

-rated – turbine: 5323 rpm

-rated – generator: 1500 rpm

-emergency trip (turbine) 110%: 5855 rpm

NATURAL TORSIONAL FREQUENCY OF THE ROTOR ASSEMBLY

– 1. frequency: 14,2 Hz

– 2. frequency: 78,6 Hz

– 3. frequency: 130,4 Hz