COURSE OVERVIEW

# Fundamentals of three-phase electrical transformers

This course covers electromagnetism, voltage and current transformation, ratios and polarity, potential and current transformers, 3-phase transformer construction, transformer classifications, losses and cooling, per unit, etc. The final exam and certification are included.

## What's included

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 is 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.

## Course Content

• Chapter 0 - Introduction
• Chapter 1 - The Ideal Transformer
• Chapter 2 - The Real Transformer
• Chapter 3 - Instrument Transformers
• Chapter 4 - Three Phase Power Transformers
• Chapter 5 - Transformer Clock System Vector Nomenclature
• Chapter 6 - Transformer Construction and Cooling
• Chapter 7 - Transformer Protection
• Chapter 8 - Transformer Relays
• The Final Exam With 24 Questions
Total Course length: 5h 37min

## Who Is This Course For

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

## Requirements

Basic Electrical; Mathematics; Trigonometry.

### Graham Van Brunt

Lead Instructor and Founder of PSPT