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.

Answers for energy.

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.

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 Water­to-Air Cooling), CACA (Closed Air-to-Air
Cooling) or DAC (Direct Air Cooling,
cooling air intake via filter).

11

1

Cross slots

2

Slot wedges

3

14

13

12

10

9

8

7

1

2

5

4

6

3

Rotor winding

4

Rotor coils

5

Rotor shaft

6

Multi-piece liner

7

Insulation tube

8

Radial / axial leads

9

Slip rings

10

Integrated blower hub

11

Blower blades

12

End plate

13

Retaining ring

14

Key assembly

2