INDUSTRIAL SUMMER TRAINING (IST) Introduction Layout of Tbea energy (india) pvt ltd Basics of transformer Information flow diagram Transformer manufacturing process Testing of transformer Main Unit & Trailer Packing Check Dispatch Conclusion

1. Shroff S.R. Rotary Institute of Chemical Technology
Principal Supporter & Sponsor- UPL LTD./ Shroff family
Managed By Ankleshwar Rotary Education Society
Approved by AICTE, New Delhi, Govt. of Gujarat & GTU Affiliated
A
PRESENTATION ON
INDUSTRIAL SUMMER TRAINING (IST)
AT
TBEA ENERGY (INDIA) PVT LTD
B. E. Semester – VI
(Branch: ELECTRICAL ENGINEERING)
SUBMITTED BY:
RAVIRAJSINH SOLANKI ( 150990109011 )
Academic year 2018-19

4. OUTLINE
• Introduction
• Layout of Tbeaenergy (india) pvt ltd
• Basics of transformer
• Information flow diagram
• Transformer manufacturing process
• Testing of transformer
• Main Unit & Trailer Packing Check
• Dispatch
• Conclusion

5. INTRODUCTION
• TBEA group invested 19.1cr USD in UHV exported job
centre of TBEA energy (india) PVTLTD.
• The investment was allowed to the 265000m uhv main
workshop and r&d is export base of the largest research
and production facility for transformer products.
• The annual gross transformer manufacturing capacity is
200 million KVA, which is third highest in the world.
• It is equipped by over 300 sets of machines including the
most advanced cut to length line and hydraulic roll over
table.
• Tebian electric apparatus (tbea) is a chinese manufacturer
of power transformers and other electrical equipment, and
a developer of transmission projects.

6. LAYOUT OF TBEA ENERGY PVT. LTD.

7. BASICS OF TRANSFORMER
• The transformer is a electrostatic device which is used to transfer electrical energy from
one circuit to another by mutual induction of two electric circuits without change in
frequency.
• Each phase of a transformer is composed of two separate coil windings wound on a
common Core.
• The low-voltage winding is placed nearest the core; the high voltage winding is then
Placed around both the low voltage winding and core.
• The core is typically made from very thin Steel laminations, each coated with insulation.
By insulating between individual laminations,
• The steel core provides a low resistance path for magnetic flux. Both high And low
voltage windings are insulated from the core and from each other, and leads are brought
Out through insulating bushings.
• A three-phase transformer typically has a core with three legs and has both high voltage
and Low voltage windings around each leg. Special paper and wood are used for
insulation and Internal structural support.

8.  INFORMATION FLOW DIAGRAM

9. CORE ASSEMBLY
Receive And Study Drawings
Incoming Material Inspection
Surface Of Lamination And Pallet
Laying Of Core Table &
Arrangment Of Clamp Assembly
Stacking Of CRGO Lamination
Clamping Of Core
Core Assembly
Welding Of TIE Rods
Upending Of Core Table
Core Inspection Before Storage

11. TRANSFORMER WINDING
Drawing Study
Acceptance of material
mould insullation
conductor drum loading
insullation of cylinder on the mould
winding manufacturing

12. LEAD ASSEMBLY
1.Preparation
2. Cabling And
Connection
3.Brazing/
Crimping
4.Surface
Treatment
5.Lead Shielding &
Insulation
Wrapping
6.Pre Assembly Of
Tap Changer
7.Tap Changer
Connection
Sheilding And
Wrapping
8.Cleaning And
Testing

14. FINAL ASSEMBLY

15.  TESTING OF TRANSFORMER
Routine tests :
• Measurement of winding resistance
• Measurement of voltage ratio
• Measurement of no-load loss
• Measurement of short-circuit impedance
• Measurement of insulation resistance
• Switching impulse voltage test
• Lightning impulse voltage test
• Temperature rise test
• Determination of capacitances and tan delta between winding to earth and between
windings.
Mechanical Tests :
• Jacking Test
• Vacuum test on transformer tank
• Oil pressure test on completely assembled transformer

16. MAIN UNIT & TRAILER PACKING CHECK SHEET
POINTS :
(1 ) Trailer Details
 Transporter name.
 Details of the trailer.
 Details of driver.
(2) Transport Dimension Of The Tank
 Ensure that the transport dimension is within the limits as per drawing requirements.
(3) Lashing Of The Job To Trailer
 Lashing should be adequate thickness.
 Lashing should not foul with the Transformer tank at any place.
 Locations of lashing should be proper.
 Lashing should be tight.
 Rubber pads should be put below lashing lug.
(4) Final Dispatch Clearance
 All gate points cleared.
 Job cleared for dispatch by quality.

17. (5) Loading Of Other Accessories On Trailer
 Packing list of all accessories loaded on trailer.
 Should be placed properly with rubber pad and wrapped with stretchable
plastic cover.
(6) Condition Of Trailer After Loading And To Prior To Movement
 Trailer should be healthy and should not tilt to one side.
 All tyre should be in good condition.
(7) Any Possibility Of Transit Damage
 There should be any sharp and unsupported protections outside the tank
(8) Check Nitrogen/Dry Air
 Nitrogen/dry air pressure should be 5 psi.
 No leak/drop in pressure.
 The pipes should be protected.
 Gauges in working condition.

18. (9) Rain Protection Cover On Main Unit(If Applicable)
 Main unit shall be covered with rain protection cover from all sides and
cover.
(10) Painting Of Transformer Main Unit And All Blanking Plate
 All temporary blanking plates should be red colour.

19. (11) The Main Tank Prior To Loading
 Clean and free from dust and air.
 No visible damage to Transformer tank.
 Hardware should be with respective item approved vendor( if applicable).
(12) Loading Of Tank On Trailer
 Ensure that the tank is in centre of trailer with respect to the centre of gravity
of job.
(13) Photographs Prior To Dispatch
 Take photographs from all sides.

20.  DISPATCH :
• After successful completion of testing,
transformer is handed over to dispatch
sections. At this stage after checking oil
leakage, etc. and covered with the blanking
plates and the tank is fitted with nitrogen gas
and then the transformer is dispatched to the
concerned site.

21.  There are generally three separate shipments made
• The main tank c/w core and coils

22. • The accessories that have been removed and
packaged

23. • The insulating oil.

25. CONCLUSION
• I would like to say that this summer training is an excellent
opportunity for me to get to the ground level and experience the
things that we would have never gained through going straight into
a job.
• I am grateful to the Shroff S R Rotary Institute of Chemical
Technology for giving me this wonderful opportunity.
• The main objective of the industrial training is to provide an
opportunity to undergraduates to identify, observe and practice
how engineering is applicable in the real industry. It is not only to
get experience on technical practices but also to observe
management practices and to interact with fellow. Workers.
• During 21 days training period, a lot of experience, knowledge and
exposure that I have handy the training was more than hope to me
and also help me to understand about manufacturing of
transformer more.