GE Mechinical Hold For 3 Protection Turbine IS230TDBTH6A

Whatever the configuration, GE steam turbines provide high-efficiency returns. The D650 turbine delivers the highest level of energy conversion efficiency—more than 42 percent—and operability for HA gas turbines. Separate high- and intermediate-pressure sections enable excellent section efficiencies and reduce leakagesand fixed losses. The A650 and D600 steam turbines offer efficiencies up to 41.5 and 42 percent, respectively. They are developed to run at up to 2,400 psi main steam inlet pressure and are sized around F- and HA-class gas turbines. Offering efficiencies up to 39.5 and 40 percent, respectively, the A450 and D400 steam turbines, which also are sized around F- and HA-class gas turbines, are targeted to run at up to 1,800 psi main steam inlet pressures. The A200 and D200 non-reheat steam turbines (up to 35.5 and 36.5 percent efficiency, respectively) are applied to combined cycle plants with low-cost fuel and at low annual operating hours. They sync up with GE’s B- and E-class gas turbines.

The mix of advanced steam turbine technologies delivers world-class overall performance. The inner carriers of the double-shell architecture is designed to reduce thermal distortion during startup and shutdown, so radial clearances and performance are maintained over time. Drum rotor construction with high reaction blading sets the steam path diameter to deliver high performance for a given steam flow. In addition, the rotor shaft diameter can be maintained for reduced rotor flexibility, stable rotor dynamics, and improved clearance control.

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