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Technology

Trusted power, everywhere

With class-leading reliability and availability, the SGT-A30 RB and SGT-A35 RB (Industrial RB211) are your proven, dependable choice in power generation and mechanical drive applications.
They are qualified to meet the stringent standards of the oil and gas industry and have earned a solid reputation in both onshore and offshore service. The SGT-A30 RB and SGT-A35 RB fleet has matured over 37 million hours in service.

The SGT-A35 RB is the latest evolution in a portfolio continuously improved by 40 years of technology development. Utilizing components already proven in industrial, marine and aerospace service, the SGT-A35 RB offers class-leading power density for power generation and mechanical drive applications. The efficient SGT-A35 RB gas turbine, with Rolls-Royce aero engine technology, is integrated in a compact, lightweight and highly maintainable package designed for oil and gas applications by Dresser-Rand, now a Siemens business.

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Highlights of the SGT-A30 RB and SGT-A35 RB (Industrial RB211) gas turbines

The SGT-A30 RB and SGT-A35 RB portfolio includes two variants of gas generators and three variants of free power turbines, allowing multiple combinations with power output ranging between 28 MW and 34 MW in mechanical drive, and different drive shaft speed. Each variant is available with or without DLE combustion and can be configured for electrical generation or mechanical drive, onshore or offshore. Such a diverse portfolio ensures that the gas turbine can be ideally matched to your requirements of each application. Add the ability to operate with a broad range of gaseous and liquid fuels, rapidly increase or decrease power output and maintain efficient operation at part load, and it's no wonder the SGT-A30 RB and SGT-A35 RB are regarded as two of the most flexible gas turbines on the market.

The SGT-A30 RB and SGT-A35 RB have earned the trust of operators in a large spectrum of applications, in the power industry as well as in oil and gas. The SGT-A30 RB and SGT-A35 RB legacy spans over 40 years of continuous improvement through the incremental injection of aero engine technology. Over 790 SGT-A30 RB and SGT-A35 RB units have been sold to date, accumulating a service experience of over 37 million operating hours. The SGT-A30 RB and SGT-A35 RB are regarded as class-leaders for their reliability.

All variants of the SGT-A30 RB and SGT-A35 RB can be restarted at any time following a shutdown from any condition, without any delay due to "hot lock-out" conditions. Unlike some of its competitors, the GT-A30 RB and SGT-A35 RB can achieve this reliably by inherent design. Thanks to its agile twin-spool architecture, the GT-A30 RB and SGT-A35 RB provide the most robust solution to restoring power quickly when its availability is most critical.

The SGT-A35 RB (Industrial RB211 GT30) is the latest evolution in the portfolio, introducing a lightweight free power turbine coupled to the proven gas generator. The power turbine utilizes proven components with millions of service hours in the Siemens Industrial Trent as well as the Rolls-Royce Aerospace and Marine Trent products. The output speed of the power turbine is optimized for direct drive of an electrical generator at either 60 Hz or 50 Hz with no need for a gearbox.
The SGT-A35 RB can also be utilized in mechanical drive applications, making it one of the most flexible gas turbines in its range. Its performance is optimized for hot climates, delivering  significantly more power at 30°C than its predecessors.
Technologically advanced and true to its legacy, the SGT-A35 RB is made to enhance value creation in multiple applications.

The SGT-A30 RB and SGT-A35 RB bring to oil and gas operators the trusted technologies acquired by Siemens through the recent additions of Dresser-Rand and the Rolls-Royce Energy aero-derivative gas turbine portfolio. The reliable SGT-A30 RB and SGT-A35 RB gas turbines, with over 700 units supporting oil and gas operations worldwide, are now packaged with the oil and gas expertise of Dresser-Rand, which has supplied over 1000 aero-derivative gas turbine packages to the oil and gas industry over the years.
SGT-A30 RB and SGT-A35 RB packages leverage the best designs and know-how of two trusted names in the oil and gas industry to produce superior customer value.

Ingenious design to the core

The SGT-A30 RB and SGT-A35 RB use an aero-derivative, two-spool gas generator aerodynamically coupled to a free power turbine. Two variants of gas generators and three variants of power turbines are available to perfectly match your requirements of each application.
The two-spool architecture allows the maximum operational flexibility, resulting in a gas turbine with high tolerance to transient excursions and challenging mission cycles, fast-starting and with no "hot lock-outs". All variants can operate on gaseous and liquid fuel, and can be configured with an optional dry low emission (DLE) combustor.

 

 

SGT-A30 RB and SGT-A35 RB packages

Fit-for-purpose packaging features, and configurable options have been demonstrated across various oil and gas applications. Choices in mechanical systems, instrumentation, electrical devices, and materials cater to a range of international and API standards, environmental conditions, facility cooling schemes, and availability requirements.

 

 

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3x SGT-A30 RB and SGT-A35 RB compact offshore packages

SGT-A35 RB package: optimized for offshore

The lightweight SGT-A35 RB gas turbine is integrated into the compact Dresser-Rand package, proven in offshore oil and gas applications.
The result is a product that offers you a minimal footprint and the highest power density in its class to maximize production while reducing topside weight; therefore lowering upfront capital investment and increasing long-term value creation.
All this while preserving the reliability of designs proven in service and compliant to the requirements of offshore oil and gas applications, including floating production, storage and offloading (FPSO) vessels.

Comprehensive services to support you

We offer long term programs (LTP), overhaul services, field service, spare parts, reconditioning of components and modernization upgrades. Whether scheduled service or short-term support, our specialists are there for you, on-site all over the world.
Maintenance of the SGT-A30 RB and SGT-A35 RB engines can be accomplished quickly and easily due to the aero engine design.

 

 

High fuel flexibility for a broad application range

 

 

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--PLACEHOLDER-- / Cristiano: Do we habe a good image representing fuel flex? Maybe from combustor? Included a photo from the fuel flex demonstration testing. An image of the combustor would not be very useful

The SGT-A30 RB and SGT-A35 RB are dual-fuel gas turbines, capable of operating on gaseous and liquid fuel and enabling an automatic changeover between these two fuels while running as required.
A broad variety of gaseous and liquid fuels can be utilized. In particular, the SGT-A30 RB and SGT-A35 RB have been tested with an extended range of gaseous fuel compositions with high proportions of inert gases, as found in several applications such as deep sea offshore. Through a dedicated engine test program, the SGT-A30 RB and SGT-A35 RB have demonstrated operation with gaseous fuels containing as much 50% inert gas by volume.
A dry low emission (DLE) option is available for all variants of the SGT-A30 RB and SGT-A35 RB.

DLE option available

All variants of the SGT-A30 RB and SGT-A35 RB are available with a dry low emission (DLE) option, to achieve emission levels of 25 vppm (dry at 15% O₂) for NOₓ and CO.

Technical data

SGT-A35 RB: Performance data for simple cycle power generation

Download table as: PDF Excel
SGT-A35 RB DLE 60Hz (34 MW)
SGT-A35 RB 60Hz (34 MW)
SGT-A35 RB 60Hz (38 MW)
SGT-A35 RB DLE 50Hz (34 MW)
SGT-A35 RB 50Hz (34 MW)
SGT-A35 RB 50Hz (38 MW)
(Industrial RB211-GT30 DLE 34 MW) (Industrial RB211-GT30 DLE 34 MW) (Industrial RB211-GT30 DLE 38 MW) (Industrial RB211-GT30 DLE 34 MW) (Industrial RB211-GT30 DLE 34 MW) (Industrial RB211-GT30 DLE 38 MW)
Power output 31.9 MW(e) 32.2 MW(e) 36.6 MW(e) 32.5 MW(e) 33.2 MW(e) 37.4 MW(e)
Fuel* Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel
Frequency 60 Hz 60 Hz 60 Hz 50 Hz 50 Hz 50 Hz
Gross efficiency 38.3% 38.5% 39.7% 37.3% 37.5% 38.7%
Heat rate 9,397 kJ/kWh 9,362 kJ/kWh 9,074 kJ/kWh 9,644 kJ/kWh 9,611 kJ/kWh 9,298 kJ/kWh
Turbine speed 3,600 rpm 3,600 rpm 3,600 rpm 3,000 rpm 3,000 rpm 3,000 rpm
Pressure ratio 22.3 : 1 22.7 : 1 25.0 : 1 22.6 : 1 22.9 : 1 25.4 : 1
Exhaust mass flow 97.9 kg/s 98.9 kg/s 109.1 kg/s 99.2 kg/s 99.8 kg/s 111.0 kg/s
Exhaust temperature 500° C (932 °F) 501 °C (933 °F) 487 °C (909 °F) 504° C (939 °F) 503 °C (937 °F) 489 °C (912 °F)
NOₓ emissions** ≤ 25 ppmvd ≤ 25 ppmvd

SGT-A30 RB: Performance data for simple cycle power generation

Download table as: PDF Excel
SGT-A30 RB (27 MW)
SGT-A30 RB (30 MW)
SGT-A30 RB (32 MW)
(Industrial RB211-G62) (Industrial RB211-G62) (Industrial RB211-G61)
Power output 27.2 MW(e) 29.9 MW(e) 32.1 MW(e)
Fuel* Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel
Frequency 50/60 Hz 50/60 Hz 50/60 Hz
Gross efficiency 36.4% 37.5% 39.3%
Heat rate 9,904 kJ/kWh 9,589 kJ/kWh 9,159 kJ/kWh
Turbine speed 4,800 rpm 4,800 rpm 4,850 rpm
Pressure ratio 20.6 : 1 21.7 : 1 21.6 : 1
Exhaust mass flow 91.0 kg/s 95.0 kg/s 94.0 kg/s
Exhaust temperature 501 °C (934 °F) 503 °C (937 °F) 509 °C (948 °F)
NOₓ emissions** ≤ 25 ppmvd ≤ 25 ppmvd ≤ 25 ppmvd

*Other fuels on request. Automatic changeover from primary to secondary fuel at any load

**NOₓ emissions at 15% O₂ on fuel gas (with DLE)

Performance data for combined cycle power generation

Download table as: PDF Excel
27 MW
27 MW DLE
30 MW DLE
Net power output 37.7 MW(e) 39.8 MW(e) 42.6 MW(e)
Net plant efficiency 50.2% 51.4% 52.8%
Net heat rate 7,175 kJ/kWh (6,801 Btu/kWh) 7,005 kJ/kWh (6,639 Btu/kWh) 6,820 kJ/kWh (6,464 Btu/kWh)
Pressure/ Reheat Dual/ No Dual/ No Dual/ No

All combined cycle performance is based on 2 pressure, no reheat.

Performance data for mechanical drive

Download table as: PDF Excel
SGT-A30 RB DLE (32 MW)
SGT-A30 RB (32 MW)
SGT-A35 RB DLE (34 MW)
SGT-A35 RB (34 MW)
SGT-A35 RB (38 MW)
(Industrial RB211-G61) (Industrial RB211-G61) (Industrial RB211-GT30 34 MW) (Industrial RB211-GT30 34 MW) (Industrial RB211-GT30 38 MW)
Power output 33.0 MW 33.8 MW 33.1 MW 33.7 MW 38.1 MW
Fuel* Natural gas, liquid fuel, dual fuel* Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel* Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel
Efficiency 40.3% 40.4% 38.9% 39.1% 40.3%
Heat rate 8,922 kJ/kWh 8,912 kJ/kWh 9,255 kJ/kWh 9,219 kJ/kWh 8,938 kJ/kWh
Drive shaft speed 3,153 – 4,850 – 5,093 rpm 3,153 – 4,850 – 5,093 rpm 2,400 – 3,429 – 3,600 rpm 2,400 – 3,429 – 3,600 rpm 2,400 – 3,429 – 3,600 rpm
Pressure ratio 21.6 : 1 22.1 : 1 22.3 : 1 22.8 : 1 25.2 : 1
Exhaust mass flow 94.0 kg/s 95.0 kg/s 98.2 kg/s 99.3 kg/s 109.5 kg/s
Exhaust temperature 510° C (950° F) 509° C (948° F) 500° C (932° F) 501° C (934° F) 488° C (910° F)
NOₓ emissions** ≤ 25 ppmvd ≤ 25 ppmvd
Download table as: PDF Excel
SGT-A30 RB DLE (27 MW)
SGT-A30 RB (27 MW)
SGT-A30 RB DLE (30 MW)
SGT-A30 RB (30 MW)
(Industrial RB211-G62) (Industrial RB211-G62) (Industrial RB211-G62) (Industrial RB211-G62)
Power output 27.9 MW 29.1 MW 30.6 MW 30.9 MW
Fuel* Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel
Efficiency 37.3% 37.7% 38.5% 38.6%
Heat rate 9,648 kJ/kWh 9,542 kJ/kWh 9,341 kJ/kWh 9,336 kJ/kWh
Drive shaft speed 3,120 – 4,800 – 5,040 rpm 3,120 – 4,800 – 5,040 rpm 3,120 – 4,800 – 5,040 rpm 3,120 – 4,800 – 5,040 rpm
Pressure ratio 20.6 : 1 21.3 : 1 21.7 : 1 22.0 : 1
Exhaust mass flow 91.0 kg/s 93.0 kg/s 95.0 kg/s 96.0 kg/s
Exhaust temperature 501 °C (934 °F) 501 °C (934 °F) 503 °C (937 °F) 503 °C (937 °F)
NOₓ emissions** ≤ 25 ppmvd ≤ 25 ppmvd

*Other fuels on request. Automatic changeover from primary to secondary fuel at any load

**NOₓ emissions at 15% O₂ on fuel gas (with DLE)

Physical dimensions and weight

Download table as: PDF Excel
Power generation package
Mechanical drive package
Approx. weight 150,000 kg (330,693 lb) 99,000 kg (218,257 lb)
Length 16.0 m (52.5 ft) 9.2 m (30.2 ft)
Width 3.3 m (10.8 ft) 4 m (13.1 ft)
Height 5.4 m (17.7 ft) 5 m (16.4 ft)

Weight is for the installed unit, dry. Dimensions are for the main package enclosure. For power generation, AC generator is included.

The SGT-A30 RB and SGT-A35 RB are suitable for the following applications and industries

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Hundreds of installations worldwide

In their 40-year evolution, theSGT-A30 RB and SGT-A35 RB have accumulated over 37 million equivalent operating hours, with over 790 units sold worldwide.

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Find out more about our products and services

In our download section, you can find brochures, technical papers, and more. Or you can contact us directly for specific inquiries.

For more information, please contact our Customer Support Center.

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Germany

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References

Experience the SGT-A30 RB and SGT-A35 RB in commercial operation, worldwide

In its 40-year evolution, the SGT-A30 RB and SGT-A35 RB have accumulated over 37 million equivalent operating hours, with over 790 units sold worldwide.

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