The development of longer last stage blades for steam turbines is one of the most effective solutions to achieve a compact and highly efficient turbine design at large unit capacities. As such, Hitachi has successfully developed multiple kinds of long last stage blades based on its own proven technology and processes.
| Frequency (Hz) | Rotation Speed (rpm) | Last Stage Blade Length (inch) |
|---|---|---|
| 50 | 3000 | 23 / 26 / 33.5 / 40 / 43 / 48 |
| 1500 | 41 / 52 | |
| 60 | 3600 | 23 / 26 / 30 / 33.5 / 36 / 40 / 45 |
| 1800 | 38 / 43 / 52 |
