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Electrical Power Transformer Testing and Diagnostics
Rating: 4.3 out of 5(25 ratings)
77 students

Electrical Power Transformer Testing and Diagnostics

Techniques for Ensuring Safety, Efficiency, and Reliability in Power Systems
Created byVikas Sinwar
Last updated 8/2025
English
English [Auto],

What you'll learn

  • 1. Open Circuit and Short Circuit Test on Transformer
  • 2. Oil Breakdown Voltage (BDV) Test, Dissolved gas analysis (DGA) Test and Partial Discharge (PD) Test of Transformer
  • 3. Dielectric Loss Test, Hipot Test and Insulation Resistance Test
  • 4. Polarity Test, Winding Resistance Test and Vector Group Test of Transformer
  • 5. Acidity Test on Transformer Oil and Transformer Turns Ratio Test

Course content

16 sections • 16 lectures • 1h 35m total length

  • Introduction2:53

    Explore essential transformer testing and diagnostics, including open/short circuit tests, oil analysis, partial discharge, dielectric loss, insulation, polarity, turns ratio, and vector group checks to enhance reliability and maintenance.

  • Basics of Transformer7:02

    Explore the basics of transformers, including electromagnetic induction, Faraday's law, mutual inductance, and the turns ratio that determines step-up or step-down operation, core, and winding roles.

Requirements

  • Basic knowledge of electrical transformer is needed.

Description

Welcome to the Electrical Power Transformer Testing and Diagnostics Course!

This comprehensive course is designed to equip you with essential knowledge and practical techniques for ensuring the safety, efficiency, and reliability of power transformers—one of the most critical components in any electrical system.

Throughout the course, you will learn a variety of testing methods used to assess transformer performance, detect faults, and support both predictive and preventive maintenance strategies. These tests are also crucial prior to the commissioning of new systems to ensure optimal operation and long-term reliability.

Key Topics Covered:

  1. Open Circuit Test on Transformers

  2. Short Circuit Test on Transformers

  3. Oil Breakdown Voltage (BDV) Test

  4. Dissolved Gas Analysis (DGA)

  5. Partial Discharge (PD) Testing

  6. Dielectric Loss Test Procedures

  7. High Potential (Hipot) Test

  8. Megger Test (Insulation Resistance - IR Test)

  9. Polarity Test of Transformers

  10. Winding Resistance Testing

  11. Vector Group Testing

  12. Transformer Oil Acidity Test

  13. Transformer Turns Ratio (TTR) Test

These diagnostic techniques play a vital role in enhancing transformer lifespan, improving reliability, and reducing the risk of unexpected failures and costly outages.

By the end of this course, you will have a thorough understanding of how to safely and effectively conduct transformer tests, interpret results, and apply them to improve system performance and asset health.

Whether you're an electrical engineer, technician, maintenance manager, or anyone involved in transformer operation and diagnostics—this course will provide you with valuable, real-world skills to advance your expertise.

Who this course is for:

  • This course is ideal for electrical engineers, maintenance managers, technicians, and professionals involved in the operation, maintenance, and testing of transformers

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