Electrical 3 Phase Power Transformers Fundamentals

person icon Graham Van Brunt

Electrical 3 Phase Power Transformers Fundamentals

The basic principles of high voltage transformers, from a protection & control perspective.

updated on icon Updated on Sep, 2023

language icon Language - English

person icon Graham Van Brunt

architecture icon Teaching & Academics,Science,Electrical Transformers


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Course Description

Electromagnetic forces interact with electrically charged particles and electromagnetic fields; this course will study how these forces lead to voltage & current transformation. Ratios and polarity are also studied leading to the introduction of potential transformers & current transformers, and their use in conjunction with the relevant instruments such as ammeters, voltmeters, watt meters, and energy meters.

Transformer core construction along with losses & cooling mitigation techniques. 3 phase transformer configurations are studied along with harmonic distortion, CT saturation, and on-load tap-changer problems and how these problems are dealt with. Over-current and restraint differential transformer protection is developed along with a look at some examples of " Old School relays" as well as modern IDE (intelligent Electrical Devices) relays.

Transformer Connections: (Y – Y; Delta - Delta; Y - Delta; Delta - Y & Y - Zag Zig) are examined along with Transformer Clock System Vector Nomenclature.

Oil Analysis and the Buchholz Relay are also studied.

Who this course is for:

  • Engineers; Technologists; Technicians; Electricians; Managers; Supervisors; Superintendents; Electrical Students


What will you learn in this course:

  • Electromagnetism, Voltage & Current Transformation, Ratios and Polarity, Potential & Current Transformers, 3 Phase Transformers Construction, Transformer Classifications, Losses & Cooling, Per Unit Equivalent Circuits, 3rd


What are the prerequisites for this course?

  • Basic Electrical; Mathematics; Trigonometry

Electrical 3 Phase Power Transformers Fundamentals


Check out the detailed breakdown of what’s inside the course

10 Lectures
  • play icon Introduction 09:30 09:30
  • play icon The Ideal Transformer 54:31 54:31
  • play icon The Real Transformer 09:09 09:09
  • play icon Instrument Transformers 18:42 18:42
  • play icon A ) Three Phase Power Transformers 01:49:42 01:49:42
  • play icon B) Transformer Clock System Vector Nomenclature 16:51 16:51
  • play icon Transformer Construction and Cooling 25:59 25:59
  • play icon Transformer Protection 53:42 53:42
  • play icon Transformer Relays 38:29 38:29
  • play icon Resources

Instructor Details

Graham Van Brunt

Graham Van Brunt

With an entire career in the power sector of engineering, Graham graduated from Queen's University coupled with subsequent studies with Wilfrid Laurier University to travel the globe and apply his skills and garner his protection and control experience internationally. 

His passion for staying in touch with his profession and his kinship for mentoring has kept him in front of an audience of learners.

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