Siemens SGen-100A-2P User Manual

Siemens Air-Cooled Generators

SGen-100A-2P Series

with ratings from 25 MVA up to 300 MVA

Final assembly of SGen-100A-2P series at Siemens Generator Plant Erfurt, Germany

As one of the international market leaders in the manufacturing of synchronous machines, Siemens has accumulated many decades of experience in the production of generators. Proven two-pole air-cooled generators, from our SGen-100A-2P series, are available for various types of power plants e.g. fossil-fueled power plants – for both gas and steam turbine generators. They can be driven by Siemens turbines or by turbines from other manufacturers.

Our air-cooled generators are developed by using state-of-the-art methods. By working with special computer programs for calculation, design and production, we can optimally match the generators to the customers’ needs.

Answers for energy.

Two-pole three-phase synchronous generator

Outstanding design features of the Siemens air-cooled SGen-100A-2P series generators include:

■high efficiency,

■low noise emissions,

■low installation and commissioning costs,

■high serviceability and

■long service life.

For each customer project, a customized generator is developed according to the individual technological specifications, output and customer needs. Using a building-block system, the required generator type is designed by choosing from different diameters and by making adjustments to length. This enables us to supply our customers with generators specially tailored to their requirements.

Siemens two-pole three-phase synchronous generators are used as high-voltage generators with a laminated cylindrical rotor or a solid salient-pole rotor. Their rotor windings have direct radial air cooling and their stators indirect air cooling.

These generators use either brushless excitation with a stationary field exciter and rotating bridge-connected rectifier or static excitation, whereby the exciter

power is taken from static excitation equipment and supplied to the rotor winding via the brush gear, carbon brushes and slip rings.

The standard design is IM 7215 according to IEC 34-7 and features pedestal type sleeve bearings which are supplied by the oil system of the prime mover.

Other designs are available as options.

2-pole generators are customized for the use on gas and steam turbines. SGen-100A-2P series generators are available with different types of cooling systems: TEWAC (Totally Enclosed Water- to-Air Cooling), CACA (Closed Air-to-Air Cooling) or DAC (Direct Air Cooling, cooling air intake via filter).

																								1	Cross slots
																								2	Slot wedges
																								3	Rotor winding
									14
						13
																								4	Rotor coils
				12
														1										5	Rotor shaft
11
																						3
																			2					6	Multi-piece liner
																	5							7	Insulation tube
											10
																								8	Radial / axial leads
																								9	Slip rings
																				4
																								10	Integrated blower hub
																								11	Blower blades
			9
																								12	End plate
																								13	Retaining ring
																								14	Key assembly
	8
													6
							7

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