Selection, Operation & Troubleshooting of Transformers Training Course

Overview Objectives Audience Methodology Contents Certificate FAQ's

Course Overview

This course aims are to provide understanding of the basic fundamentals and constructional features of Power Transformers with particular reference to the design, testing, operation and maintenance of transformers in power systems. Transformer is a very complex and valuable device with many mechanical and chemical processes taking place all the time. The course also highlights the necessary safe procedures relating to Transformer Isolations, energizing and related circuitry. Special emphasis is also placed on the Testing and maintenance of transformers.

This course is a must for utility and industrial electrical Engineers, who have the responsibility of keeping their electrical system “on-line.” This course combines theoretical and practical aspects of transformer design, operation, maintenance, testing and troubleshooting. This course gives the participant the information necessary in helping him prevent premature failure and costly unplanned outages. The participant will learn the oil and electrical test requirements and how to interpret the test data as well as setting up a proper preventative maintenance program.

Important Features

The important features of the Selection, Operation & Troubleshooting of Transformers training course are:

Developing a maintenance procedure of power transformers
Understanding the selection criteria of transformers
Management of all hazards associated with power transformers
Management related issues such as risk and safety

Learning Objectives

Explain the basic operation of a transformer as a main component in any electrical network.
Determine different shapes and designs of transformers.
Discuss turns ratios and calculate terminal voltage and current.
Discuss terminal markings and various single phase and three phase wiring schemes. (WYE vs DELTA).
Discuss the electrical testing performed on transformers such as insulation resistance testing, excitation and power factor testing.
Discuss the various tests performed on insulating oil.
Understand Safe and proper maintenance and troubleshooting procedures on power transformer.
Learn practical new solutions for specifying, operating and maintaining power transformers in a utility or plant environment
Avoid costly errors from specifying the wrong transformer for your application and from failing to recognize the importance of specifying the right core design
Examine the possibilities of maximizing efficiency and economic performance of your transformer fleet
Determine precise transformer specifications for every application
Become familiar with what makes a power transformer tick
Gain knowledge of both the underlying principles and practical applications of power transformers in today’s competitive world

Target Audience

This course is recommended for skilled trades, supervisors, and anyone involved in the maintenance of industrial power circuit breakers, especially: Engineers and technicians from electricity supply industry – Engineering professionals from companies manufacturing, importing and distributing Power and Distribution Transformers – Engineers and technical personnel in power utilities, co-generation operators, petrochemical plants, service managers of buildings and hospitals. Participants need no specific requirements other than the basic understanding of electricity and magnetism and circuit theory and general knowledge of nature and operation of Power Transformers.

Training Methodology

The latest educational methods and strategies are employed. The course is designed to not only give the required fundamental knowledge but also to provide a strong background for all attendees towards practical industrial applications. The course will be highly interactive, with opportunities to advance your opinions and ideas. Participation is encouraged in a supportive environment. To ensure the concepts introduced during the course are understood, they will be reinforced through a mix of learning methods, including lecture style presentation, open discussion, case studies, simulations and group work.

Pre & Post course assessments will be used to measure the effectiveness of this training.

Course Contents

Module 1 -Basics and theory of transformers

Key Topics

Introduction
Magnetic field
Magnetic and electric fields
Electromagnetism
Electromagnetic induction
Generating electrical current
Three phase system
Worldwide AC voltages and frequencies
Per-unit values

Transformer Theory

Purpose and Scope
Types of transformers
Transformer applications
Magnetic and electric circuits of a transformer
Winding, current and voltage ratios
Laws of transformer
Principle of operation of a transformer
Transformer equivalent circuit and transformer losses
Efficiency and why is transformer efficiency usually high?
Regulation and transformer’s voltage per turns
Significance of volts per hertz

Transformer Construction

Introduction
Core material
Core configurations
Transformer core types
Transformer windings
Bushings
Tank and Transformer tank fittings

Module 2 - Transformer cooling and Performance

Key Topics

Introduction
Cooling arrangement
- ONAN type cooling
- ONAF type cooling
- OFAF type cooling
- OFWF type cooling
Gas insulated transformer
Comparisons
Temperature gauges and Oil level gauge
Thermal time constant of power transformer
Power transformer sealing systems
Effect of oil expansion
Silica gel breather and moisture

Transformer Performance

Nameplate data
Transformer parameters
Three phase transformer
Auto-transformer
Transformer tap changer
Parallel operation
Maximum efficiency
Dry type transformer
Transformer noise
Permissible loading of oil-immersed transformers
Special transformers

Module 3 -Transformer Power Factor and Harmonics

Key Topics

Introduction
Causes of low power factors
Known loads power factors
Annual power factor penalty
Unfavourable effects of low power factor loads
Capacitor price simple payback
Power factor improvement
Power factor improvement for power transformer
Transformer reactance
Capacitor sizes required to compensate the no-load reactive power of transformers
Voltage rise
Harmonics and Waveform
Useful parameters
Sources of harmonics
Problems created by harmonics
Third harmonics generate large neutral currents
Third harmonic filter and Installation of THF in different networks
Active filter (power quality filter)
K-rated transformer

Module 4 -Transformers Protection

Key Topics

Transformer faults
Differential relays
Biased differential relays
Restricted earth fault protection
Over current protection
Overload protection
Gas operated (Buchholz) relay
Sudden pressure relay
The internal fault detector
Explosion vents
Temperature indicator
Tank earth protection

Module 5 - Transformer Testing and Diagnostics

Classroom Session

Dubai

23 - 27 Nov 2026

$5,600

Dubai

01 - 05 Feb 2027

$5,600

Abu Dhabi

05 - 09 Apr 2027

$5,600

Kigali

14 - 18 Jun 2027

$5,600

Dubai

30 Aug - 03 Sep 2027

$5,600

Dubai

29 Nov - 03 Dec 2027

$5,600

More Schedules

Online Session

Duration: 2 Hrs X 8 Days

Starting Date

07-Dec-2026

$3,000

Starting Date

22-Mar-2027

$3,500

Starting Date

09-Aug-2027

$3,500

Starting Date

18-Oct-2027

$3,500

Starting Date

20-Dec-2027

$3,500

More Schedules

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Certificate

Upon successful completion of this training, participants will receive a PROMISE Certificate of Completion.

Certificate

Upon successful completion of this training, participants will receive a PROMISE Certificate of Completion.

This Program has been approved for 25.00 HR (General) recertification credit hours toward aPHR , aPHRi , PHR®, PHRca®, SPHR®, GPHR®, PHRi and SPHRi recertification through HR Certification Institute® (HRCI®)

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An exceptional learning experience. This stands out as one of the most comprehensive and well-structured courses I have encountered in my career.