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Mastering Electrical Transformers
Rating: 3.7 out of 5(11 ratings)
130 students

Mastering Electrical Transformers

Theory, Construction, types and Testing of transformers
Created byVikas Sinwar
Last updated 8/2025
English

What you'll learn

  • Working principle of transformer, Importance , advantages, limitations and applications of transformer
  • Construction of Transformer: Core, Windings, Insulation, Cooling System, Transformer Tank, Conservator Tank, Breather Unit, Buchholz Relay, Explosion Vent
  • Classification of Transformer: Core type and Shell type of Transformer, Power Transformer, Distribution Transformer, Instrument Transformer , Current Transform
  • Classification of Transformer: Potential Transformer (PT), Auto Transformer, Three-Phase Transformer, Ideal transformer, Isolation Transformer
  • Transformer losses: Copper Losses, Core Losses, Hysteresis and Eddy Current Losses, Stray Losses, Dielectric Losses
  • Transformer Testing: Open circuit test, Short Circuit test, Oil Breakdown Voltage (BDV) Test, Dissolved Gas Analysis (DGA)
  • Transformer Testing: Partial Discharge (PD) Testing, Dielectric Loss Test, High Potential (Hipot) Test, Insulation Resistance - IR Test, Polarity Test
  • Transformer Testing: Winding Resistance Testing, Vector Group Testing, Transformer Turns Ratio (TTR) Test, Acidity Test, Furan Testing
  • Miscellaneous: Practice sets, Earthing, Harmonics, Transformer Maintenance Checklist

Course content

6 sections • 42 lectures • 3h 54m total length

  • Introduction5:45
  • Transformer prinicple7:02
  • Importance , advantages, limitations and applications of transformer9:40

Requirements

  • Basic knowledge of electrical transformer is needed.
  • A willingness to learn and apply technical concepts

Description

Welcome to Mastering Electrical Transformers: Theory, Construction, Types, and Testing—a comprehensive e-learning program designed to provide you with in-depth knowledge and practical skills essential for the safe, efficient, and reliable operation of power transformers. As one of the most vital components in any electrical power system, a strong understanding of transformers is critical for engineers, technicians, and professionals involved in electrical infrastructure and diagnostics.

This course offers a well-structured exploration of transformer principles, constructional details, classifications, performance characteristics, and diagnostic testing procedures. It is ideal for professionals seeking to enhance their technical competencies in transformer design, maintenance, and condition assessment.

Key Topics Covered:

  • Fundamentals of Transformers

    • Working principle

    • Importance, advantages, limitations, and applications

  • Construction and Components

    • Core, windings, insulation systems

    • Cooling mechanisms, transformer tank, conservator tank

    • Breather unit, Buchholz relay, explosion vent

    • Terminals, bushings, and surge arresters

  • Transformer Classification

    • Core type and shell type

    • Power, distribution, and instrument transformers

    • Current and potential transformers (CT & PT)

    • Auto transformers, three-phase transformers

    • Ideal and isolation transformers

  • Transformer Losses

    • Copper and core losses

    • Hysteresis and eddy current losses

    • Stray and dielectric losses

  • Testing and Diagnostics

    • Open circuit and short circuit tests

    • Oil Breakdown Voltage (BDV) test

    • Dissolved Gas Analysis (DGA), Partial Discharge (PD) testing

    • Dielectric loss test, High Potential (Hipot) test

    • Insulation Resistance (IR) test, polarity test

    • Winding resistance test, vector group test

    • Transformer Turns Ratio (TTR) test, acidity test, furan testing

  • Additional Topics

    • Practical test sets and exercises

    • Transformer earthing and surge protection

    • Maintenance checklists and best practices

Learning Outcomes:

By the end of this course, you will be able to:

  • Comprehend the working and design aspects of various transformer types

  • Perform essential transformer tests and interpret diagnostic results

  • Apply maintenance strategies to enhance performance and operational safety

  • Identify and mitigate potential issues to prolong transformer lifespan and reliability

Who Should Enroll:

This course is tailored for electrical engineers, maintenance professionals, technicians, and anyone involved in transformer operations, diagnostics, or power system management. Whether you're expanding your foundational knowledge or sharpening your technical expertise, this program offers the tools and insights needed to advance in the field.

Who this course is for:

  • Electrical engineers and technicians working in power systems
  • Maintenance and reliability professionals
  • Engineering students or graduates looking to specialize in electrical equipment
  • Anyone preparing for roles in electrical diagnostics, power distribution, or transformer commissioning

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