HOWDEN SERIES TWIN-CA 56 STEAM TURBINE AND TD POWER SYSTEMS AC GENERATOR 7.0MW MFG 2018 - PENDING RF

Howden 7MW TWIN Condensing Steam Turbine with A.C. Generator MFG 2018 50 HZ / 60 HZ

• OEM: Siemens Turbomachinery Equipment / TD Power systems Series SST-110

• Unit type: Twin-CA 56

• Power output: 7.0MW

• Main Steam Temp: 445°C

• Operates on 900°F superheated steam at 800psi.

• Provides plant process steam at 375°F at 46psi

RO make-up water treatment system

• Sole source of Plant processing power via gas fired boiler

Power output at coupling Normal 6155 kW

Maximum 5500 kW

Terminal output Normal kWe

Maximum kWe

Output speed Minimum --- rpm

Normal 1800 rpm

Maximum --- rpm

Trip speed Normal 1962 rpm

Gear ratio 8.48

Main steam pressure Minimum (limit) 49.4 bar

Minimum (operation) --- bar

Normal (operation) 54.6 bar

Maximum (operation) 59.1 bar

51

Maximum (limit) 59.6 bar

Maximum (safety

valve)

59.6 bar

Main steam temperature Minimum (limit) 425 °C

Minimum (operation) --- °C

Normal (operation) 471 °C

Maximum (operation) --- °C

Maximum (limit) 486 °C

Intermediate pressure Minimum (limit) 2.2 bar

Minimum (operation) --- bar

Normal (operation) 3.2 bar

Maximum (operation) 3.95 bar

Maximum (limit) 4.2 bar

Maximum (safety

valve)

4.2 bar

Intermediate temperature Maximum (limit) 388 °C

Intermediate temperature (uncoupled,

short-term)

Maximum (limit) 471 °C

Leakoff steam pressure Maximum 2 bar

Discharge leakoff steam to low-pressure system or atmosphere

Differential pressure Δ p4 at impeller Alarm bar

Shutdown of bar

See installation drawing for direction of rotation

Sound pressure level (turbine) dB (A)

Sound power level (turbine) dB (A)

Gear ratio 6.29

Exhaust steam pressure Minimum (limit) -0.848 bar

Minimum (operation) --- bar

Normal (operation) -0.828 bar

Maximum (operation) 0.2 bar

Maximum (limit) 0.5 bar

Maximum (safety

valve)

2 bar

Exhaust steam temperature Maximum (limit) 350 °C

Differential pressure Δ p4 at impeller Alarm 0.35 bar

Shutdown of 0.4 bar

Sound pressure level (turbine) 86.1 dB (A)

Sound power level (turbine) 101.1 dB (A)

Includes A.C. GENERATOR

This generator is a Brush less AC generator with an AC exciter and rotating rectifier

mounted on a common shaft. The specification of the generator is as follows:

AC GENERATOR DETAILS

1. Type Cylindrical Rotor type

2. Conforming standards. NEMA MG-1

3. Type of excitation system Brushless

4. Continuous rated output kW / kVA 7000 / 8750

5. Speed in (rpm) 1800

6. Voltage (Volts) 13800

7. Full load current (Amps) 366

8. Frequency (Hz) 60 Hz - Can be supplied with 50 HZ 11KV Generator

9. No. Of phases / No of terminals 3 ph / 6

10. Power factor 0.8 (Lag)

11. No. Of poles 4

12. Insulation Class

Stator: Class F

Rotor: Class F

13. Temperature rise class limited to Class B

14. Enclosure Main: IP 54

15. Cooling System Main: IC 81W

16. Bearings Two nos. sleeve Bearings

17. Bearing oil feed system Forced Lubrication

Used less than 1 year. Available due to complete plant closure.

• Still Under powertdps-generator-test-report-1-pdf
• bbf00257_gad_z-172443_revc-pdf
• 14791-d-anc-0-1-pdf
• tdps-generator-manual-pdf
• tdps-generator-cooler-manual-pdf
• steam-turbine-maintenance-section-of-manual-pdf