SIEMENS SGT5-400DLE Gas Turbine – 290–540 MW - 2019

The SIEMENS SGT5-400DLE Gas Turbine, manufactured in 2019, is a robust, high-capacity turbine designed for both simple cycle and combined-cycle power generation. It offers exceptional fuel flexibility, including natural gas, LNG, and liquid fuels, and delivers output ranging from ~290 MW in simple cycle to ~540 MW in combined cycle, depending on configuration.

Featuring a two-shaft design, 15-stage axial-flow compressor, and DLE annular combustion system, the turbine ensures ultra-low emissions and high operational stability. Its combined-cycle thermal efficiency exceeds 60%, and it meets stringent NOx emission standards without water injection, achieving levels as low as 15 ppmvd at 15% O₂.

The SGT5-400DLE is ideal for large-scale grid power plants, CHP stations, or LNG facilities, offering high output, advanced combustion control, and low lifecycle costs.

Specifications:

– Model: Siemens SGT5-400DLE
– Year of Manufacture: 2019
– Type: Heavy-duty industrial gas turbine
– Configuration: Two-shaft, axial-flow compressor with annular DLE combustion
– Application: Simple cycle and combined-cycle power plants
– Output Class:
 • Simple Cycle: ~290–350 MW (ISO conditions)
 • Combined Cycle: ~460–540 MW (ISO conditions)
– Thermal Efficiency:
 • Simple Cycle: ~37–39%
 • Combined Cycle: ~60–62% (typically ~61.5% at ISO)
– Heat Rate (Combined Cycle): 8,800–9,100 kJ/kWh
– Compressor Type: Axial-flow
– Compression Stages: 15
– Compression Ratio: ~20:1
– Combustion System: Annular Dry Low Emissions (DLE) system
– Emissions Performance (Natural Gas):
 • NOx: ≤15 ppmvd @15% O₂ (without water injection)
– Fuel Flexibility:
 • Compatible with Natural Gas, LNG, Liquid Fuels, Biofuels
– Start-Up Time: Optimized for modern power grid needs (fast ramp-up capability)
– Control System: Siemens digital automation and monitoring suite
– Exhaust Temperature: High exhaust energy suitable for HRSG integration
– Cooling System: Air and oil-cooled subsystems
– Frequency Support: 50 Hz / 60 Hz models available
– Power Factor: Typically 0.85–0.90 lagging
– Voltage Output: High-voltage generator, 11 kV / 15 kV or site-specific
– Length: 14.0 meters
– Width: 3.1 meters
– Height: 4.3 meters
– Weight: Approx. 40,000 kg (excluding auxiliary systems)

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