- L&T-MHI Power Turbine Generators
- Products
- Generators
LMTG combines the proven design and quality standards of Mitsubishi with L&T’s state-of-the-art manufacturing and project execution capabilities. We bring more than 80 years of manufacturing experience in Generators, with a supply record of more than 240 GW and 1800 units.
We offer Turbine Generators with output ranging from:
- 660 / 800 / 1000 MW DRIVEN BY SUPER-CRITICAL STEAM TURBINE FOR COAL-FIRED THERMAL POWER PLANT
- 150 / 300 MW DRIVEN BY STEAM TURBINE FOR GAS-FIRED COMBINED CYCLE POWER PLANT
| MW RATING (MW) | 660 | 800 | 1,000 | |
|---|---|---|---|---|
| COOLING SYSTEM | STATOR WINDING | WATER COOLED | ||
| STATOR CORE | HYDROGEN INNER COOLED | |||
| ROTOR | HYDROGEN INNER COOLED | |||
| EXCITER | STATIC / BRUSHLESS | STATIC | STATIC | |
STANDARD SPECIFICATIONS OF L&T MHI POWER TURBINE GENERATORS
| Type | 2-POLE, 3-PHASE, 50 HZ, 3000 RPM, CONTINUOUS DUTY, STAR CONNECTED STATOR COIL, HORIZONTALLY MOUNTED CYLINDRICAL ROTOR, ROTATING FIELD TYPE WITH EXPLOSION PROOF STRUCTURE |
| VOLTAGE VARIATION | ± 5% OF RATED VOLTAGE |
| FREQUENCY VARIATION | -5% TO +3% OF RATED FREQUENCY |
| ABSOLUTE COMBINED VOLTAGE AND FREQUENCY VARIATION | 5% |
| EXCITATION SYSTEM | STATIC / BRUSHLESS |
| DESIGN STANDARD | IEC 60034 |
| INSULATION CLASS OF STATOR AND ROTOR COIL | CLASS F, B RISE (IEC) |
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FEATURES
The following features mark our Turbine Generators:
- Highly standardised and of type tested quality to meet all requirements stipulated in IEC 60034. This makes our Turbine Generators competitive for global markets.
- The most efficient cooling circuits with combined application of Hydrogen and de-mineralized water for higher output range.
- Hydrogen seal oil system and H2-CO2 gas system - The gas and seal oil control systems are designed for easy operation, and high reliability.
- Hydrogen explosion safe stator frame design - the use of hydrogen as a cooling media is hazardous when it mixes with air in range of 4 - 75% by volume. The 'explosion-proof’ design of LMTG’s Turbine Generators’ stator frame is designed to mitigate the catastrophic risk of hydrogen explosion, which can withstand maximum 8 (eight) bar-g while explosion pressure of atmospheric mixture of air and hydrogen is not more than 7 (seven) bar-g.
- Hydrogen gas cooler: The H2 gas coolers are of sectionalized design and are vertically mounted on the exciter side of the turbine generator to bring down the temperature of hot H2 gas to desired cold condition.
Constructional features
- Rotor: The rotor is machined from a single alloy steel forging. The rotor coil ends are supported by floating type retaining rings, shrink-fitted over the rotor body.
- Stator: A combination of hollow and solid strands is used to achieve high cooling and low eddy-current loss in the stator coil.