1. Heavy Electrical Equipment Plant
(HEEP)
Created By – Paramjeet Singh Jamwal
Submitted to – Mrs. Anuradha
Session – 2010-2011

2.  Largest Engineering and Manufacturing Enterprise.
 Manufacturing Electrical and Mechanical Equipment.
 Ranked among the top 10 companies in the world.
 10 Manufacturing Divisions, 8 Service Centers, 4
Power factor regional Centers, Projects sites.

3.  Production started in January 1967.
 In 1976, agreement with M/s Kraftwerk Union, AG of
Germany.
 More than 40% of Electrical Energy.

4. 250 MW Totally Impregnated

5. • Voltage - 16500
Main Output • Current – 10291
• Voltage – 299 V
Excitation • Current – 2497 A
• 294100 KVA
Power • 25000 KW
• Direct gas cooling of stator winding.
Cooling • Indirect gas cooling of rotor winding.
• Gas pressure – 4 kg/cm2
Other • Coolant - Hydrogen

6. Rotor
Stator
• Stator • Rotor shaft
frame • Rotor
• Stator core winding
• Core • Rotor
winding retaing
assembly rings

8.  Single piece construction of welded steel.
 Supports the laminated core and winding.
 Minimize core vibrations and ensure efficient cooling.
 Guide bars are welded inside the stator frame.
 Rigid casing is required.

10.  Mounted in outer casing by welded springs.
 Made by stacking from the insulated electrical sheet
steel lamination.
 mounted in supporting rings over the insulated
dovetail guide bars.
 Core is made of thin laminations in order to minimize
eddy current losses.
 Ventilation ducts are distribute the gas accurately over
the core.

11. Stacking of the stator core
Insulated guide bars are installed in the respective slots
The supporting rings are welded together to form a cage
Installation of core and winding assembly in the outer casing

13.  Single piece solid forging manufactured from a
vacuum casting.
 Rotor shaft is forged from a vacuum cast steel ingot.
 Aprox 60% of the rotor body circumference is provided
with logitudinal slots which hold the field winding.
 Non uniform slot distribution on the circumference.

14.  Consist of several coils which are inserted into the
slots.
 Two coil group form one pole.
 Several series connected turn each coil.
 Each turn consist of two longitudinal and two
transverse turns.
 Turns of the coils are insulated from each other by
interlayer.

15.  It contained the centrifugal force of the rotor end
windings.
 Made of non-magnetic high strength steel (reduce
stray losses).
 Secured in the axial position by a snap rings.

16. Different moment of inertia are obtained in the
main axis of the rotor.
Causes oscillating shaft deflection at twice the
system frequency.
To reduce these vibrations pole axis and natural
axis are compensated by transverse sloting of poles.