reil summer training

1. A
Presentation
On
Solar Photo Voltaic Modules
&
Electronic Milk Tester
At
Rajasthan Electronics & Instruments Limited
(Kanakpura , Jaipur)
Submitted by
Pradeep Kumar kumawat
31-8-2015 1

2. Contents
 Introduction about REIL
 Solar Photo Voltaic Module
(i) Working Principle
(ii) Block Diagram
(iii) Manufacturing Process of SPV Module
(iv) Advantages & Disadvantages
 Electronics Milk Tester
(i) Working Principle
(ii) Features of EMT
 Conclusion
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3. Introduction About REIL
 REIL was established in 1981.
 It has an important place among the Electronic Industry Of
Rajasthan.
 It is a Public Sector Unit.
 It is a joint venture between Gov. of India And Gov. of
Rajasthan.
 Shareholding Pattern
1) Gov. of India 51% Holding
2) Gov. of Rajasthan 49% Holding
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4. Solar Photo Voltaic Module
 SPV module is used to convert sun light into electrical energy.
 It has connected assembly of solar cells.
 Cells are made up of silicon.
 Output Of each cell is approximately 0.5 volt dc.
SPV Module
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5. Working Principle
 It is based on the principle of Photoelectric Effect.
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6. Block Diagram
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7. Manufacturing Process Of SPV Module
 Tabbing Of Cells
 Row Making
 Stringing
 Lay- Up
 Lamination
 Curing
 Trimming
 Channeling
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8. 1. Tabbing of cells
 Process of making terminals of a Bare cell by soldering copper
strips to the Bus bar.
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9. 2. Row making
 A row of cells is made by connecting positive surfaces of one
cell to the negative surface of another cell.
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10. 3. Stringing
 The rows of SPV cells are connected in series to get desired
power rating.
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11. 4. Lay-Up
 It is a process of placing laminating material to the either side
of the string. The laminating materials are-
(i) Top Glass (Toughened Glass)
(ii) Ethylene Vinyl Acetate sheet
(iii) Polyester Taddler
5. Lamination
 The SPV module after lay-up process is placed in the
laminator for 11 minutes.
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12. 6.Curing
 In this process the laminating material attain full strength by
placing the module into 1200c temperature for 20 minutes.
7.Trimming
 The final module is obtained by cutting the extra laminating
material.
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13. 8.Channeling
 Modules are channelled from all the four sides.
 Anodized aluminium frames are used for channelling.
 Channels prevent any damage to the module.
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14. Advantages
 It have no moving parts.
 No noise pollution or any othe type of pollution.
 Requires minimum maintenance.
 Have long service lifetimes (upto 20 years).
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15. Disadvantages
 High cost.
 Doesn’t work at night.
 Efficiency levels are low.
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16. Electronic Milk Tester
 It is an instrument which is used for the measurement of fat
percentage in milk.
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17. Working Principle
 It works on the photometric measurement of light scattered by
the fat globules present in the milk sample.
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18. Features of EMT
 Operate on AC mains as well as battery.
 Performs 110-130 samples per hour.
 Instant measurement and display of milk fat.
 Instant calculation of amount payable.
 Printing facility.
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19. Conclusion
This training made me learn the practical aspects of
engineering.It gave me experience of working in a professional
environment with professional people at a professional place. I
have learnt adjusting myself to the busy schedule and workload
which I will have to face in the future.
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20. Thank You
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