Recent Advances in Transmission Insulators

By Prof. Subba Reddy   |   IISc Bangalore
Learners enrolled: 1576
This course introduces the recent advances in EHV/UHV transmission Insulators. The course emphasizes learning and understanding the newer design criteria for the UHV transmission insulation. The course starts with an introduction to the importance of EHV /UHV transmission, its present and future growth. The discussion on the various components used for UHV transmission, design considerations etc are strengthened with the aid of lectures, practical video demonstrations and assignment exercises.

INTENDED AUDIENCE  3rd or 4th year UG, 1st year masters and research students UG/PG course, industry/utility participants can also register.
PREREQUISITES Basic knowledge of Electrical Engineering.
Course Status : Completed
Course Type : Elective
Duration : 4 weeks
Category :
  • Electrical, Electronics and Communications Engineering
Credit Points : 1
Level : Undergraduate/Postgraduate
Start Date : 24 Jan 2022
End Date : 18 Feb 2022
Enrollment Ends : 07 Feb 2022
Exam Date : 27 Mar 2022 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1 :  Introduction, Important components of transmission system,Insulation coordination ,Design and selection of insulators for transmission/distribution ,
Week 2 :   Non ceramic insulators performance-service experience ,Pollution/contamination flashover phenomena, modelling etc ,Failures, importance of reliability and testing 
Week 3 : High Voltage testing and techniques employed ,HV testing techniques for Ceramic/glass Insulators ,HV testing on Composite Insulators 
Week 4 :  Surface degradation studies on composite insulators ,Recent studies on composite insulators / Summary 

Books and references

1.Rakosh Das Begamudre, “ Extra High Voltage AC Transmission Engineering”, New Age International(P) Ltd, New Delhi, 2000. 
2.E Kuffel, W S Zaengl and J Kuffel, “High Voltage Engg. Fundamentals”, textbook published by Newness publishers, second edition, 2000. 
3.Recent IEEE Journal / Conference and CIGRE publications. • “Outdoor Insulators”, Ravi group, Edward Cherney & Jeffery Burnham Text book, 1999 
4.Insulators for High Voltage – J S T Looms, text book, Peregrines, 1988 • K Papailiou and F Schmuck, “Silicone Composite Insulators: Materials, design, Applications for Power systems, Springer Berlin Heidelberg, 2012.

Instructor bio

Prof. Subba Reddy

IISc Bangalore
Dr.Subba Reddy B is a Principal Research Scientist at the High Voltage Laboratory, Dept. of Electrical Engineering, Indian Institute of Science, Bangalore, India. He received Bachelor’s in Electrical Engineering degree from Karnatak university, Dharwad, and MSc(Engg) and PhD from Indian Institute of Science, Bangalore, India.

His research interests are high voltage engineering, transmission line insulators, numerical techniques for high voltage applications, condition monitoring and diagnostics of HV equipment, surge arresters, renewable energy systems etc. He has received national and international recognition for his research work. He is a Fellow of Institution of Engineers (India), Fellow, Society of Power Engineers (India) and Senior member IEEE

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 27 March 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 3 assignments out of the total 4 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IISc Bangalore.It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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