Description Overview Siemens steam turbine generators Year: 1971 and 1973 180,004 hours / 34.46% 180,096 hours / 34.73% Capacity: 200 MW Maximum continuous generation capacity: 275,000 kWh Type: Re-heat, recycle, condensing Steam Turbine Specifications Main steam temperature: 535 Main steam pressure: 191 kg/cm² Reheating steam temperature: 442 Reheating steam pressure: 538 kg/cm² Back pressure: 46.09 mbar Extraction steps: 7 steps Turbine steps (HP/IP/LP): 70 steps (19/18/11x3) Critical speed: 1410, 1920, 2450, 2520, 2570, 3260 rpm RPM: 3600 Condenser Siemens, year 1971 Box type, surface condenser Generator Specifications Make: Siemens Year: 1971 and 1973 Model: FTHDD 540/60, hydrogen cooling Capacity: 275 MVA Voltage: 21,000 plus/minus 7.5% V Current: 7560 A Hz (power factor): 60 (0.8) Phase: 3 Generator volume: 53 m³ Hydrogen gas pressure: 4 kg/cm² RPM: 3600 Excitation: Siemens, year 1971/1973, box type, surface condenser, steam: 385.59 m³/h Exciter Specifications Make: Siemens Year: 1971/1973 Type: Indirect exciting type Capacity: 1910 kVA Voltage: 400 V Current: 2600 A Frequency: 180 Hz RPM: 3600 Phase: 3 Main Transformers Make: Hyundai (Korea), year 1997, voltage ratio: 164,000 V / 21,000 V, capacity: 260 MVA Make: Siemens, year 1971, voltage ratio: 164,000 V / 21,000 V, capacity: 260 MVA Start Transformer Make: Siemens, year 1970 Make: Hyundai, year 1999 Control Systems Turbine control system: make ABB, year 1991 Automatic boiler control system: make ABB, year 1991 Sequence of event recorder (SOE): make Rochester Instrument System (Germany), year 1999 Operator interface system unit (OIS): make ABB, year 2012/2005 Main Equipment Change History (2006-2012) 2012: Middle pressure turbine control valves changed into new ones; turbine control drive changed 2008: HP TBN assembly of #3 high pressure turbine 2008: Control valve all changed into brand-new ones of #3 middle pressure turbine 2008: Coupling bolts all changed into brand-new ones of #3 turbine 2008: Fixed wings all changed into brand-new ones of #3 low pressure turbine 2008: Exciter wheel units changed into brand-new ones 2008: Turbine main oil pump shaft changed into brand-new ones 2007: Blades 22 units changed into brand-new ones of #2 middle pressure turbine 2007: Crossed key 14 units changed into brand-new ones of #2 middle pressure turbine 2007: Locking strip changed into brand-new ones of #3 middle pressure 2007: IP TBN rotor blade 402 units changed into brand-new ones of #3 middle pressure 2006: HP TBN assembly of #2 high pressure turbine 2006: Control valve change of #2 middle pressure turbine