Courses » Recent Advances in Transmission Insulators

Recent Advances in Transmission Insulators


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.

Important For Certification/Credit Transfer:

Weekly Assignments and Discussion Forum can be accessed ONLY by enrolling here

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Note: Content is Free!

All content including discussion forum and assignments, is free

Final Exam (in-person, invigilated, currently conducted in India) is mandatory for Certification and has INR Rs. 1100 as exam fee


3rd or 4th year UG, 1st year masters and research students UG/PG course, industry/utility participants can also register.


UG/PG: UG and PG

PREREQUISITES: Basic knowledge of Electrical Engineering.



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.


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


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.

  • The exam is optional for a fee.
  • Date and Time of Exam: October 28, 2018 (Sunday)
  • Time of Exams: Morning session 9am to 12 noon; Afternoon session: 2pm to 5pm.
  • Exam for this Course will be available in both morning & afternoon sessions.
  • 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.


  • Final score will be calculated as : 25% assignment score + 75% final exam score
  • 25% assignment score is calculated as 25% of average of  Best 3 out of 4 assignments
  • E-Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and Indian Institute of Science Banglore.It will be e-verifiable at http://nptel.ac.in/noc/