GE, 7500 KW, 1949, Condensing Steam Turbine Generator, 850 PSIG, 4160V

Description

  1. Overview
    1. Inventory number: E-2090
    2. 7,500 kw general electric condensing automatic extraction steam turbine generator unit
    3. Manufactured in 1949-50
    4. Start-up date: early 1960s
    5. Retirement date: 1993
    6. The unit was in good operating condition when it was shut down due to plant decommissioning and was carefully removed from the original installation site.
    7. Being a multi valve inlet and extraction unit, it operates more efficiently than a single valve unit at part load.
    8. This steam turbine generator unit is offered loaded on trucks.
  2. Steam Turbine
    1. General electric rated 7,500 kw, 14 stages, 3600 rpm
    2. Inlet steam conditions: 850 psig at 825°f
    3. 50 psig automatic extraction and 2.0 inch hga exhaust pressure; and 2.5 inch hga exhaust pressure
    4. Single cylinder, automatic extraction, multi valve, 14 stage design
    5. 1 main stop valve
    6. 1 mechanical hydraulic control system
    7. 6 main control valves and operating mechanisms
    8. 1 extraction pressure regulator
    9. 1 pressure governor
    10. 6 extraction control valves
    11. 1 extraction non-return valve
    12. 1 lubrication oil reservoir
    13. 1 shaft driven main lubrication oil pump
    14. 1 auxiliary lubrication oil pump
    15. 1 lubrication oil (to water) cooler
    16. 1 gland seal system
    17. 1 turbine gauge panel
    18. 1 surface condenser
    19. 2 electric motor driven condensate pumps
    20. 1 circulating water pump driven by a 150 horsepower 1178 rpm frame 444ts electric motor
    21. 1 steam turbine throttle flow/performance curve (copy available on request)
    22. 1 set of manuals
    23. 1 set of steam turbine generator unit related drawings
  3. Generator
    1. General electric, 2 pole, 3 phase, 60 hertz, 9375 kva, 1301 armature amps, 4160 volts wye; 0.80 power factor
    2. Air (to water) cooled synchronous generator
    3. 1 rotor mounted ventilation fan
    4. 4 vertical air (to water) coolers designed for 180 gallons of 90°f cooling water
    5. 1 general electric type edf, frame 93, shunt connected, rotating 125 vdc, 40 kw, 320 amp exciter
  4. Engineering And Performance Data
    1. Normal output power with extraction: 7,500 kw
    2. Normal output power (straight condensing): 6,000 kw
    3. Steam turbine manufacturer: general electric
    4. Steam turbine serial number: 128458
    5. Generator manufacturer: general electric
    6. Generator serial number: 8287206
    7. Exciter manufacturer: general electric
    8. Exciter serial number: wr 45-94
    9. Exciter type: edf, direct connected, rotating
    10. Rated throttle steam pressure: 850 psig
    11. Rated throttle steam temperature: 825°f
    12. Maximum throttle flow: 128,000 lb/hr
    13. Automatic extraction pressure: 50 psig
    14. Automatic extraction minimum/maximum flow: 0-100,000 lb/hr
    15. Rated exhaust pressure: 2.0 inches hga
    16. Approximate straight condensing steam rate: 9.3 lb/kwhr
    17. Steam turbine speed: 3600 rpm
    18. Generator speed: 3600 rpm
    19. Generator capacity: 9375 kva
    20. Generator voltage: 4160 volts wye
    21. Rated power factor: 0.80
    22. Generator phase/frequency: 3/60
    23. Exciter capacity: 40 kw
    24. Exciter capacity: 320 amp
    25. Exciter voltage: 125 vdc