TET4160 - Insulating Materials for High Voltage Applications


Examination arrangement

Examination arrangement: Home examination
Grade: Letters

Evaluation form Weighting Duration Examination aids Grade deviation
Home examination 100/100 4 hours

Course content

Properties of different insulation systems based on: gas, solids and liquid/paper. Mechanisms of electrical conduction, polarisation, dielectric loss and breakdown. Ageing mechanisms (partial discharges, thermal degradation,water treeing, etc.) and methods for condition assessment including environmental aspects.

Learning outcome

The course aims to give a thorough introduction to properties needed of different insulating materials used for design of High Voltage apparatus.

After completing this course the candidate shall:
- have in-depth knowledge about the terms regarding determining dimensions of high voltage power apparatus.
- be able to give an account of the basic breakdown mechanisms of gasses, oils and solid insulating materials.
- be able to give an account of relevant factors determining permittivity and dielectric loss values.
- know the structure and characteristic properties of insulation systems based upon different polymers, glass, ceramics, oils and gasses.
- be able to give an account of the gradual degradation mechanisms caused by partial discharges, water trees and electrical trees.

After completing this course the candidate have obtained advanced knowledge within the science of High Voltage insulation and specialized material knowledge to be able to:
- design insulation systems for simplified high voltage power apparatus.
- be able to use digital simulation tools for electric field stress at AC and DC voltages.
- to use instruments and equipment in high voltage laboratories.

General competence:
After completing the course, the candidate has increased:
- skills in cooperation and interdisciplinary collaboration
- ability to communicate effectively to professionals and non-specialists alike through reports and presentations
- ability to contribute to innovation and innovation processes

Learning methods and activities

Lectures, compulsory calculation and laboratory exercises. The laboratory exercises cover the topics: - Measurement of dielectric loss and detection of partial discharges in airgaps. Electric breakdown strength of airgaps exposed to typical stresses. Digital simulation tools will be used at least in one exercise. The course is given in English.

Compulsory assignments

  • Exercises
  • Laboratory work with report

Further on evaluation

Permitted examination aids, support material code D: No printed or hand-written support material is allowed. A specific basic calculator is allowed. In addition, calculator Casio fx-991EX is allowed. If there is a re-sit examination, the examination form may change from written to oral.

Specific conditions

Exam registration requires that class registration is approved in the same semester. Compulsory activities from previous semester may be approved by the department.

Course materials

Digital compendium.

Credit reductions

Course code Reduction From To
SIE1050 7.5
More on the course



Version: 1
Credits:  7.5 SP
Study level: Second degree level


Term no.: 1
Teaching semester:  AUTUMN 2020

No.of lecture hours: 3
Lab hours: 5
No.of specialization hours: 4

Language of instruction: English

Location: Trondheim

Subject area(s)
  • Electrical Power Engineering
  • Technological subjects
Contact information

Department with academic responsibility
Department of Electric Power Engineering



Examination arrangement: Home examination

Term Status code Evaluation form Weighting Examination aids Date Time Digital exam Room *
Autumn ORD Home examination (1) 100/100

Release 2020-12-07

Submission 2020-12-07

Release 09:00

Submission 13:00

Room Building Number of candidates
Summer UTS Home examination 100/100 INSPERA
Room Building Number of candidates
  • * The location (room) for a written examination is published 3 days before examination date. If more than one room is listed, you will find your room at Studentweb.
  • 1) Merk at eksamensform er endret som et smittevernstiltak i den pågående koronasituasjonen. Please note that the exam form has changed as a preventive measure in the ongoing corona situation.

For more information regarding registration for examination and examination procedures, see "Innsida - Exams"

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