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Power Transformer Protection

COURSE NO: E06-003
Power Transformer Protection
Course Highlights

This online engineering course presents transformer protection including interturns, tank faults and core faults. It presents information on over-voltages, magnetizing inrush, and overheating.


The advancement of electrical power systems has been reflected in the developments in power transformer manufacturing. This has led to a wide range of power transformers. Their ratings range from a few kVA to several hundred MVA and are used for a wide variety of applications. Power transformer protection varies with the application and transformer importance.


This 6 PDH online course is suitable for electrical engineers with a desire to understand the power transformers protection fundamentals. Upon successful completion engineers will be able to address the most important power transformer protection aspects, widely adopted protection schemes and arrangements and their proper application.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Power transformer fault background
  • Power transformer differential protection
  • Power transformer restricted earth fault and overcurrent protection
  • Phase correction and filtering of zero sequence currents
  • Overfluxing and tank-earth protection
  • Buchholz protection
  • Earthing transformer protection
  • Autotransformer protection
  • Non unit and unit protection schemes
  • Power transformer condition monitoring
Course Document

In this professional engineering CEU course, you need to review the course document titled, “Power Transformer Protection”.

To view, print and study the course document, please click on the following link(s):
Power Transformer Protection (2.5 MB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of thirty five (35) questions to earn 6 PDH credits. The quiz will be based on the entire document. 
The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: