Used Siemens EK1000-2 6.56 MW Steam Turbine Generator Plant

Manufacturer Information

Siemens is an established manufacturer of industrial power generation equipment, including steam turbines, synchronous generators, electrical controls, and related power systems.

This Siemens EK1000-2 multistage extraction/condensing steam turbine was manufactured in Germany in 1981. The system includes a Siemens speed reduction gearbox and Siemens Model 1DU7534-7FE82-Z synchronous generator, along with associated excitation, protection, lubrication, and cooling equipment.

The turbine and gearbox underwent extensive inspection and maintenance in July–August 2023, with supporting documentation available.

Main Product Description

Used Siemens Model EK1000-2 multistage extraction/condensing steam turbine generator plant, manufactured in Germany in 1981, with a rated turbine shaft output of 6,560 kW (6.56 MW), Serial No. T5719. The turbine is designed for 9,000 RPM operation with live steam conditions of 48.3 bar (700 PSI) at 404°C (759°F), intermediate steam extraction pressure of 7.3 bar (106 PSI), and condensing exhaust design pressure of 12 kPa absolute. The system features a Siemens 6:1 speed reduction gearbox rated for 6,900 kW continuous duty, reducing turbine speed from 9,000 RPM to 1,500 RPM. The driven generator is a Siemens Model 1DU7534-7FE82-Z three-phase synchronous alternator, Serial No. D8025106101, rated at 8,200 kVA, 11,000 volts, 50 Hz, 1,500 RPM, and 0.8 power factor. Associated equipment includes excitation and electrical control panels, Siemens and GE protection components, SEL digital relays, DECS-250 digital excitation controller, lubrication system with approximately 6,300-liter oil reservoir, and two Alfa Laval Model M10-BDFG plate heat exchangers manufactured in 2021. Main steam condenser and steam dump condenser equipment are associated with the plant, with inclusion in the sale subject to confirmation. Extensive major inspection and maintenance were performed in July–August 2023, including turbine rotor removal, internal inspections, non-destructive testing, dynamic balancing, gearbox and bearing inspections, generator electrical testing, and vibration assessment. Inspection records reported acceptable gearbox condition and low post-commissioning vibration levels at that time. Originally installed in an industrial cogeneration and energy recovery system at a sulphuric acid production facility, this Siemens steam turbine generator plant is supported by available engineering documentation, maintenance records, mechanical drawings, electrical schematics, and inspection reports.

Specifications

Steam Turbine:

• Equipment Type: Steam Turbine Generator Plant

• Turbine Manufacturer: Siemens

• Turbine Model: EK1000-2

• Turbine Configuration: Multistage Extraction/Condensing

• Condition: Used

• Manufacturing Year: 1981

• Country of Manufacture: Germany

• Turbine Serial Number: T5719

• Rated Shaft Output: 6,560 kW (6.56 MW)

• Turbine Operating Speed: 9,000 RPM

• Live Steam Pressure: 48.3 Bar (700 PSI)

• Live Steam Temperature: 404°C (759°F)

• Intermediate Extraction Pressure: 7.3 Bar (106 PSI)

• Condensing Exhaust Design Pressure: 12 kPa Absolute

Speed Reduction Gearbox:

• Manufacturer: Siemens

• Gear Ratio: 6:1

• Continuous Duty Rating: 6,900 kW

• Input Speed: 9,000 RPM

• Output Speed: 1,500 RPM

Synchronous Generator:

• Manufacturer: Siemens

• Generator Type: Three-Phase Synchronous Alternator

• Model: 1DU7534-7FE82-Z

• Serial Number: D8025106101

• Rated Apparent Power: 8,200 kVA

• Rated Voltage: 11,000V

• Frequency: 50 Hz

• Rated Speed: 1,500 RPM

• Rated Power Factor: 0.8

• Rated Real Power at 0.8 Power Factor: 6,560 kW (Calculated from Nameplate Ratings)

Electrical and Control Equipment:

• Associated Excitation Equipment: Included

• Electrical Control Panels: Included

• Electrical Protection Panels: Included

• Protection Component Manufacturers: Siemens and GE

• Digital Protection Relays: SEL

• Digital Excitation Controller: DECS-250

Lubrication and Cooling Equipment:

• Lubrication System: Included

• Approximate Oil Reservoir Capacity: 6,300 Liters

• Plate Heat Exchangers: 2

• Heat Exchanger Manufacturer: Alfa Laval

• Heat Exchanger Model: M10-BDFG

• Heat Exchanger Manufacturing Year: 2021

Associated Condenser Equipment — Sale Scope to Be Confirmed:

• Main Steam Condenser

• Steam Dump Condenser

• Main Condenser Retubing Year: 2012

• Main Condenser Inspection Year: 2023

Inspection and Maintenance:

• Major Inspection Period: July–August 2023

• Turbine Rotor Removal: Performed

• Internal Turbine Inspections: Performed

• Non-Destructive Testing: Performed

• Rotor Dynamic Balancing: Performed

• Gearbox Inspection: Performed

• Bearing Inspection: Performed

• Generator Electrical Testing: Performed

• Vibration Assessment: Performed

• Reported Gearbox Condition at Inspection: Acceptable

• Reported Post-Commissioning Vibration at That Time: Low

Documentation:

• Engineering Documentation: Available

• Maintenance Records: Available

• Mechanical Drawings: Available

• Electrical Schematics: Available

• Inspection Reports: Available

Previous Installation:

• Industrial Cogeneration and Energy Recovery System

• Sulphuric Acid Production Facility

Applications

• Industrial steam turbine power generation

• Cogeneration and combined heat and power (CHP)

• Industrial energy recovery

• Process steam energy utilization

• Extraction/condensing turbine applications

• Industrial electrical generation

• Steam-driven synchronous generation

• Chemical plant power generation

• Sulphuric acid plant energy recovery

• Industrial utility power systems

• Steam-to-electricity conversion

• Process steam and electrical energy integration

Suitable Industries and Process Environments

• Chemical manufacturing facilities

• Sulphuric acid production plants

• Industrial cogeneration facilities

• Combined heat and power installations

• Industrial steam utility systems

• Energy-intensive manufacturing facilities

• Process plants with suitable high-pressure steam supplies

• Industrial facilities requiring steam extraction and condensing operation

Actual suitability depends on steam conditions, extraction steam requirements, condenser performance, electrical grid compatibility, installation configuration, and the results of current equipment inspections.

Frequently Asked Questions (FAQs)

- What is the power rating of this Siemens steam turbine?

The Siemens EK1000-2 turbine has a rated shaft output of 6,560 kW, equivalent to 6.56 MW.

- What type of steam turbine is this?

It is a multistage extraction/condensing steam turbine designed for intermediate steam extraction and condensing exhaust operation.

- What year was the turbine manufactured?

The turbine was manufactured in Germany in 1981.

- What are the turbine's inlet steam requirements?

The specified live steam design conditions are 48.3 bar (700 PSI) at 404°C (759°F).

- What is the intermediate extraction pressure?

The turbine has a specified intermediate steam extraction pressure of 7.3 bar (106 PSI).

- What is the turbine exhaust design pressure?

The condensing exhaust design pressure is 12 kPa absolute.

- What speed does the turbine operate at?

The turbine is designed for 9,000 RPM operation. A Siemens 6:1 reduction gearbox reduces the speed to 1,500 RPM for the generator.

- What is the generator rating?

The Siemens synchronous generator is rated at 8,200 kVA, 11,000 volts, 50 Hz, 1,500 RPM, and 0.8 power factor.

- Does the generator produce 6.56 MW of electricity?

The generator's 8,200 kVA rating at 0.8 power factor corresponds to 6,560 kW of rated real electrical power. However, the turbine's stated 6.56 MW rating is shaft output. Actual net electrical generation depends on mechanical and electrical losses, steam conditions, operating configuration, and auxiliary loads.

- Is this a 50 Hz or 60 Hz generator?

The supplied generator is rated for 50 Hz operation.

- Has the turbine undergone recent major maintenance?

Yes. Extensive inspection and maintenance were performed in July–August 2023, including rotor removal, non-destructive testing, dynamic balancing, gearbox inspection, bearing inspection, generator electrical testing, and vibration assessment.

- What were the findings of the 2023 inspection?

The available inspection records reported acceptable gearbox condition and low post-commissioning vibration levels at that time. Current operating condition should be verified through the latest available records and inspection.

- Does the system include electrical controls and protection equipment?

Yes. Associated excitation equipment, control and protection panels, Siemens and GE protection components, SEL digital relays, and a DECS-250 digital excitation controller are identified.

- What lubrication equipment is included?

The system includes a lubrication arrangement with an approximately 6,300-liter oil reservoir.

- Are heat exchangers included?

Yes. Two Alfa Laval Model M10-BDFG plate heat exchangers manufactured in 2021 are included.

- Are the main steam condenser and steam dump condenser included?

Both condensers are identified as associated plant equipment. Their inclusion in the sale requires confirmation.

- Can this turbine be used in a cogeneration plant?

The turbine was originally installed in an industrial cogeneration and energy recovery system. Suitability for another cogeneration installation depends on the available steam supply, extraction requirements, condenser system, electrical integration, and plant operating conditions.

- Are engineering and maintenance records available?

Yes. Engineering documentation, maintenance records, mechanical drawings, electrical schematics, and inspection reports are available.

- Can Aaron Equipment assist with shipping this Siemens turbine generator plant?

Aaron Equipment can help coordinate specialized freight, rigging, and transportation arrangements for this industrial power generation system. Contact our team to discuss equipment location, component dimensions, shipping weights, disassembly requirements, and available transportation options.

- How can Aaron Equipment help determine whether this turbine generator meets my requirements?

Aaron Equipment can assist with available technical specifications, inspection reports, maintenance records, engineering drawings, equipment scope information, and purchasing questions to help buyers evaluate the Siemens EK1000-2 for their power generation or energy recovery application.