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Voltage Transformers

COURSE NO: E03-042
Voltage Transformers
Course Highlights

This online engineering PDH course presents information on voltage transformers, including basic engineering laws, measuring error, voltage factor, burden and accuracy class, non-linear burdens, different voltage transformer winding connections, Ferro resonance and specific applications for protection schemes.


There are two types of voltage transformers, magnetic voltage transformers (VT) and capacitive voltage transformers (CVT). The magnetic voltage transformers are most economical for voltages up to about 145 kV and the capacitive voltage transformers for voltages higher than 145 kV. A CVT can also be used together with the Power Line Carrier (PLC) devices that are used for communication over the high voltage transmission circuits.


This 3 PDH online course is suitable for engineers and technicians with a desire to understand the fundamental theory and operating principles of voltage transformers. Upon successful completion engineers will be able to address different terms related to voltage transformers, understand their operational principles and various applications.
Learning Objectives

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

  • Understanding the basic voltage transformer theory
  • Learning about the measuring error
  • Learning about the voltage factor
  • Knowing the burden and accuracy classes
  • Learning about the different voltage transformer winding connections
  • Learning about Ferro resonance
  • Understanding the specific applications for different protection schemes
Course Document
In this professional engineering CEU course, you need to review the document titled, “Voltage Transformers” by Velimir Lackovic, Char. Eng.
To view, print and study the course document, please click on the following link(s):
Voltage Transformers (1.5 MB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty (20) questions to earn 3 PDH credits. The quiz will be based on this 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: