SANJAY GANDHI POLYTECHNIC, BALLARI
AN INTERNSHIP REPORT
ON
“MANUFACTURING OF FUSES”
AT
"MERSEN INDIA PRIVATE LIMITED, BENGALURU"
Submitted in partial fulfillment of the requirement for the award of degree of
diploma Engineering for the academic year 2024-25.
SUBMITTED BY:
MAHESH.G
REGISTER NO: 459EE22121
Cohort Owner Training Supervisor
Mr. M. GANESH BABU MTech, MISTE Mr. PRAVEEN Btech,
Head of Department Principal
Mr. SYED FAKRUDDIN Mr. GOURI SHANKAR HIREMATH MTech(PhD)
DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING
SANJAY GANDHI POLYTEHNIC
"Vidya Soudha", Sanjay Gandhi Nagar Ballari 583101
i
SANJAY GANDHI POLYTECHNIC, BALLARI
(T.E.H.R.D) TRUST'S
(Recognized by AICTE, New Delhi & Govt. of Karnataka)
"Vidya Soudha", Sanjay Gandhi Nagar, Ballari- 583101.
CERTIFICATE
This is to certify that MAHESH.G Bearing Register, no (459EE22121) student of Sanjay
Gandhi Polytechnic 3rd year in Electrical and Electronics Engineering, have carried out the
study and completed the internship report on the topic “MANUFACTURING OF FUSES”
in “MERSEN INDIA PRIVATE LIMITED”, BENGALURU. During the period from 02-
01-2025 To 04-042025. During the training period their conduct was good and internship
training report is satisfactory.
Signature of Cohort Owner Signature of Head of Department
Mr. M. GANESH BABU MTech, MISTE Mr. SYED FAKRUDDIN
Signature of Principal
Mr. GOURI SHANKAR HIREMATH (PhD)
Examaniar:1 Examinar:2
ii
INTERNSHIP COMPLETION CERTIFICATE
iii
DECLARATION
I, Mahesh. G hereby declare that the presented report of the internship Titled
“Manufacturing of fuses” in “Mersen India Private Limited”, Bengaluru is uniquely prepared
by me after the completion of 16 weeks Internship. I also confirm that the report is only
prepared for my academic requirement, not for any other purpose.
MAHESH.G
REG- 459EE22121
DIPLOMA IN ELECTRICAL AND ELECTRONICS ENGINEERING
SANJAY GANDHI POLYTECHNIC, BALLARI- 583101.
iv
ACKNOWLEDGEMENT
I would like to express our regards and acknowledgement to all those who helped in making
this internship work possible.
I am grateful to our beloved director Mrs. Y NAMRATA for providing facilities and
untiring zeal, which constantly inspired me towards the attainment of everlasting Knowledge
throughout the course.
I am grateful to our beloved principal MR. GOURI SHANKAR HIREMATH MTech (Ph.D.) for
providing facilities and untiring zeal, which constantly inspired me towards the attainment of
everlasting knowledge throughout the course.
I am deeply indebted to HOD Mr. SYED FAKRUDDIN of Electrical & Electronics
Engineering department for the valuable suggestions and constant encouragement provided
for the successful completion of the internship work.
I am grateful to our beloved internship cohort owner Mr. M. GANESH BABU MTech, MISTE of
Electrical & Electronics Engineering department for their valuable suggestions and constant
support during internship program.
I would like to thank training supervisor Mr. PRAVEEN for the constant guidance for the
successful completion of internship program.
Finally, I would like to thank all the teaching and non-teaching staff members of Electrical
and Electronics Engineering department for their guidance and support.
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EXECUTIVE SUMMARY
The report gives an overview of Mersen India private limited, Bommasandra industrial area
Bengaluru. The Internship as been carried out in the Mersen India private limited company
which is located at Bommasandra, Bengaluru India. Our internship is related to
manufacturing of fuses. which is used in industries, commercial & residential buildings,
hospitals etc. to prevent or control the short circuit or overload while there is unbalanced flow
of current or uneven wiring.
Mersen is a global expert in electrical Specialties and advanced materials for high tech
industries with more than 50 industries sites and 13 R&D and Centers in 33 countries around
the world, Mersen develops customize the solutions and delivers key products to its clients in
order to meet the new technology challenges shaping to tomorrow’s world be it in wind
power, solar power, electronics electric vehicles, aeronautics, optical Fibre and countless
other sectors.
In India the operations of this company started in 1978 as ELCA carbon technologies private
limited. Later it was further classified as ferrous Shawmut private limited and carbon Lauren
private limited for both the divisions. The name was changed to Mersen India private limited
in 2010. Mersen delivers its expertise in essential products categories such as carbon brushes,
brush holders, SPD (surge protection devices), PV fuses, fuses, for segments like Renewable
energy wind and solar, electronics, rail road and automobiles, optical fibre, chemical and
various other process industries.
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CONTENTS
Chapter 1----------------------------------------------------------------------------------------01
1.1 Introduction--------------------------------------------------------------------------------01
1.2 Overview of the Organization-----------------------------------------------------------03
1.3 Organization structure--------------------------------------------------------------------05
1.4 Roles and Responsibilities of Personnel in the organization------------------------05
1.5 Product and Market Performance-------------------------------------------------------08
Chapter 2----------------------------------------------------------------------------------------10
2.1 Manufacturing of fuses-------------------------------------------------------------------10
2.2 spot welding-------------------------------------------------------------------------------16
2.3 Soldering-----------------------------------------------------------------------------------18
2.4 Fuses machine setting----------------------------------------------------------------------20
Chapter 3----------------------------------------------------------------------------------------22
3.1 SPD- surge protection devices----------------------------------------------------------22
3.2 Key features and benefits----------------------------------------------------------------24
3.3 2P-SPD-------------------------------------------------------------------------------------25
3.4 3P-SPD-------------------------------------------------------------------------------------26
3.5 4PGM-SPD--------------------------------------------------------------------------------28
3.6 YPVM--------------------------------------------------------------------------------------29
3.7 YPV-SPD-----------------------------------------------------------------------------------30
3.8 Mersen technology-------------------------------------------------------------------------31
Chapter 4----------------------------------------------------------------------------------------32
4.1 Steps to manufacture PSC fuses----------------------------------------------------------32
4.2 Used case-1 by an inter during OJT-1---------------------------------------------------35
4.3 Used case-2 by an inter during OJT-2---------------------------------------------------40
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STUDENT PROFILE/RESUME-----------------------------------------------------------44
PHOTO GALLERY--------------------------------------------------------------------------47
APPENDICES----------------------------------------------------------------------------------48
CONCLUSION--------------------------------------------------------------------------------49
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List of Figures
Fig Name of the Figure Page
NO NO
1.1 Logo of Mersen India Pvt. Ltd 01
1.2 Overview of Organization 03
1.3 Organization Structure 05
1.4 Market performance 08
2.1 Inner caping of fuses 11
2.2 Pad printing 12
2.3 M-effect 14
2.4 Fuse element cutting machine 15
2.5 Spot welding 16
2.6 Spot welding machine 20
2.7 Symbol of single blade 21
3.1 4PGM 23
3.2 YPVM 23
3.3 4P 23
3.4 2P 23
3.5 4P-SPD 24
3.6 2P-SPD 25
3.7 3P-SPD 26
3.8 4PGM-SPD 28
3.9 YPVM-SPD 29
3.10 YPV 30
4.1 Brazing machine 32
4.2 Labelling 34
5.1 Surge protection device 40
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LIST OF TABLES
Table No Name Page No.
4.1 Brazing temperature 33
4.2 Components and functions of fuses 37
4.3 Faults and remedies 38
