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Transformer Series


We create high quality illustrative and engaging educational video tutorials since 2014. Over the years, thousands of students have found our videos well explained and Millions of people have watched our content and thousands of people have been engaged with us.


Shamekh Power

You are gifted. Thanks for sharing your knowledge. I personally appreciated. Thanks generalPAC


Parminder Dhawan

This stuff is absolute, thanks for all the efforts you put in projecting this information in such an intuitive manner.



Man you make learning very easy



Really enjoy your videos. I'm an electrical engineer and its good to refresh on the fundamentals every once in a while


Benjamin Kalionzes

Very helpful and clear, thank you!


Marilana Deventer

Really enjoy your videos. I'm an electrical engineer and its good to refresh on the fundamentals every once in a while

Power Transformer Fundamental Series

Transformer is the #1 main electrical component in Power Distribution System. A huge amount of high voltage comes in transformer which is transformed to required voltage without incurring high interruption in supply. The need of supplying smooth power to the consumers require extensive development in the designing of transformer. The selection of transformer winding connections depends on the requirements of load, cost of insulation and inherited problems affecting the performance of system. It is important to understand all the transformer winding connections in depth. So, an electrical designer or student need to know transformer basics, their working mechanism, and different configurations of connecting transformer windings in their arsenal.

This course will teach you all the fundamentals of Power Transformer. We will start from very basics: introducing transformer winding connections Delta Wye and Wye Wye, how voltage and current quantities are related by phasor diagram, and methods to represent each transformer connections. In addition, you will build a strong concept on circulating currents and voltages. This module consists of three parts, each building upon your knowledge based on previous ones.

What you will learn ?

Introduction to Delta Wye Transformer Connection

  • 17 parts | 1.5 hours + | thorough
  • Unlock the complex equations of Line and Phase voltage by phasor diagrams

  • Learn how winding connections are represented in transformer nameplate

  • Explore methods to learn how transformer connection is represented

Introduction to Wye Wye Transformer Connection

  • 4 parts | 0.5 hours | thorough
  • How wye connection is made
  • Different ways to configure wye connected transformer
  • How voltage and current quantities are calculated
  • How balanced sets are created by phasors

Introduction to Delta Wye Transformer Connection and Circulating Currents and Voltages

  • 2 parts | 5 Minutes+ | thorough
  • How to hand calculate current and voltages during a faulted condition.
  • How to calculate both phase current and voltages as well as sequence current and voltages.
  • Ways to relate calculated short circuit currents with sequence network diagrams
  • Method to draw zero-sequence network for a delta wye transformer
Power Transformer Fundamentals

$230.00 USD

IEEE 1584-2018 | Guide for Performing Arc Flash Hazard Calculations

We have launched a new course i.e. IEEE 1584-2018 (Guide for performing Arc Flash Hazard Calculations). In this course, we talked about the introduction, history and some of the major changes in the approved IEEE 1584-2018 standard. Currently, we're offering 50% discount for a limited time. We hope you will join us and get benefit from it.

A quick word from GeneralPAC

We add value by creating very insightful, highly engaging, and simply intuitive power system video tutorials and courses. Our objective is to sharpen YOUR skills and further YOUR understanding on these concepts.

Our promise is to make the fundamental series available to everyone who cannot afford it. This promise is fueled by our community, our fans, and our sponsors. If you can afford to purchase this video, please be considerate and fair at the checkout window. Remember, our objective is to sharpen YOUR skills and further YOUR understanding on these concepts. 

It takes almost 12 hours to complete videos including making of conceptual script, audio and video recording as we put our efforts and time to brainstorm creative ways so that you have a strong understanding on each topic. It's no wonder why thousands of students and professionals have trusted our video and hundreds of thousands of people have watched, liked, subscribed, and left positive comments on our GPAC YouTube channel.

Lastly, our video tutorials are not here to replace the way we traditionally learn about power systems through classroom environment, or reading  textbooks, or learning from peers and tribal knowledge within your career, or hands-on & on-the-job learning. We simply supplement the traditional methods with modern, flexible, and intuitive approach. We believe in providing a platform where students from all community can ask their questions and to provide detailed answers to each question making Power System learning easy and captivating.