2. Overview - B.H.E.L
 BHEL is the largest
engineering
&manufacturing enterprise
in India.
 Established 40 years ago.
 Earns profits continuously
since 1971-72,& paying
dividends since 1976-77

3. Vision, Mission & Values
Vision
Mission
Values
• A world class engineering enterprise committed to enhancing
stakeholder values.
• To be an Indian multinational engineering enterprise
providing total business solution through quality products.
• Meeting commitments made to external & internal customers.
• Respect for dignity & potential of individuals.
• Integrity and fairness in all matters.

4. BHEL
HEEP(Heavy
Electrical
Equipment
[Plant)
CFFP(Central
Foundary
Forged Plant)

5. Heep(Heavy Electrical
Equipment Plant)
Block 1 : Electrical Machine Shop
Block 2 : Heavy Fabrication Shop
Block 3 : Turbine Manufacturing
Block 4 : CIM( Coils & Insulation Manufacturing )
Block 5 : Condenser fabrication & Forgr
Block 6 : Fabrication Shop,Die Shop, Stamping
Shop
Block 7 : Carpantry Shop
Block 8 : Heat Exchanger shop

6. Block 1
 Machine section
 Assembly section
 Stator winding







Machine section
Iron assembly
Heavy rotor assembly section
Stator winding section
Armature/Rotor section
General assembly section
Test stands
Hydro generator
Turbo generator

7. TURBO
GENRATOR
210 MW
500 MW

8. Sailent feature of Turbo Genrator
 Rated output
:
588 MVA,500 MW
 Terminal voltage
:
21 KV
 Rated stator current
:
16 KA
 Rated frequency
:
50 Hz
 Rated power factor
:
0.85 Lag
 Efficiency
:
98.55%

9. Turbo Genrator

Turbo generator consists of
following parts:
o
o
o
o

STATOR
ROTOR
BEARINGS
SHAFT BEARINGS
Other additional auxiliaries:
o Excitation system

10. Stator
 Stator frame
 Stator core
 Stator winding
 End shields
 Terminal bushing
 Phase connector
 Hydrozen cooler

11. Stator frame
 Stator body is a totally
enclosed gas tight fabricated
structure made up of high
quality mild steel
 At top of the stator frame U-
shape pipe is situated which
are used to flow of water
for cooling .

12. Stator Core
 The laminated core made by
cold rolled high quality
silicon steel
 It is stacked with lamination
segments & Segments are
assembled in an interleaved
manner from layer to layer
for uniform permeability.

13. Stator Winding
 The stator has a three phase,
double layer, short pitched and
bar type of windings having two
parallel paths
 Each bar consist of hollow
conductor with cooling water
passing through the latter.
 Bhel used to epoxy mica
thermosetting insulation for
stator bars.

14. Vaccum Pressure Impregration
 In 1956 Dr. MEYER has
brought this system.
 In this process preheating,
impregration,post curing&
electrical testing are done.
 It remove the penetrating air
pockets in the winding.

15. Rotor
 Rotor shaft
 Rotor winding
 Rotor wedges
 Rotor retaining rings
 Field connections
 Fans

16. Rotor shaft
 Rotor shaft is a single piece
solid forging manufactured
from a vacuum casting.
 The longnitudnal slots are
distributed over the
circumfrence

17. Rotor winding
 The rotor winding distributed
symmetrical in the rotor pole
 The winding itself is made
up of many turns of copper .
 All of the turns associated
with a single slot are called a
coil.

18. Retaning Ring

19. Retaning Ring
 The overhang portion of the field winding is held by non-
magnetic steel forging of retaining against centrifugal forces.
 They are shrink fitted to the ends of the rotor body at one end.
 The other side of retaining ring does not make contact with the
shaft .
 To reduce stray losses, the retaining rings are made of non-
magnetic, austenitic steel and cold worked, resulting in high
mechanical strength.

20. Fans
 The generator cooling gas is
circulated by two single
stage axial flow propeller
type fans.
 The fans are shrink fitted on
either side of rotor body.
 Fan hubs are made of alloy
steel.
 Fan blades which are
precision castings with
special alloy are machined
in the tall portion.

21. Thank you !

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