Turbine ANSALDO Turbine

Manufacturer: Ansaldo

Year of Manufacture: 1999

Technical Data Listing

Generator

- Type: Three-phase synchronous generator GSCR 800Y4
- Power: 7,250 KVA
- Voltage: 10,500V
- Frequency: 50 Hz
- Phase Number: 3
- Number of Poles: 4
- Rated Current: 398.8A
- Power Factor: 0.80
- Rated Speed: 1,500 rpm
- Spin Speed: 1,800 rpm
- Insulation Heat Resistance Class: F
- Ambient Temperature: 40°C
- Moment of Inertia of the Rotor: 118.75 kgm²
- Winding Connection: Star
- Excitation Voltage Rating: 41.2/158.3V
- Rated Excitation Current: 54.2/152.3A
- Operation Mode: Continuous
- Protection Class: IP 4
- Cooling Water Quantity: 660 l/min
- Cooling Water Inlet Temperature: 40°C
- Cooling Water Inlet Pressure: 4 bar
- Air Inlet Temperature: 45°C
- Bearing Type: Rolling bearing
- Bearing A-side: EMZLB18-200
- Bearing B-side: EMZLQ18-200
- Min. Clearance Shaft/Bearing: 0.267mm
- Max. Clearance Shaft/Bearing: 0.342mm
- Permitted Max. Clearance Shaft/Bearing: 0.410mm
- Lubrication Type of Bearings: Oil, pressure circulation
- Oil Type: L-HM46 ISO 3498
- Oil Quantity per Bearing: 8 l/min
- Oil Pressure: 0.2 – 0.5 bar
- Direction of Rotation: Counterclockwise (total on A-side)
- Total Weight of the Machine: 23,200 kg
- Runner Weight: 6,970 kg

Transmission

- Manufacturer: Flender

Turbine

- Type: CD 433DR
- Rated Speed: 9,400 rpm
- Steam Inlet Temperature: 399°C
- Steam Inlet Pressure: 39 bar
- Pressure Exhaust Steam: 0.1 bar
- Temperature Extraction/Tapping: Approx. 210/120°C
- Pressure Extraction/Tapping: Approx. 4.4/1.9 bar

Both turbines were in operation for over 20 years. One of the two turbines was damaged and could no longer be put back into operation two years ago. The extent of the damage is not known. Significant vibrations were detected during start-up, meaning that it was no longer possible to recommission the turbine.

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