Power and Distribution Transformers Training Course

Introduction

The Power & Distribution Transformers training course is designed to equip professionals with essential skills in testing, analyzing, and troubleshooting transformers to enhance performance and prevent failures. Power and distribution transformers are critical to the reliability of medium to large power systems, particularly in sectors like utilities, oil & gas, mining, and heavy industry. This interactive power transformer training course explores key strategies for preventative and condition-based maintenance, online monitoring, insulating oil analysis, and dissolved gas diagnostics. Participants will gain a practical understanding of both power and distribution transformers, their roles in electrical distribution, and the best practices for extending their operational life. Through guided discussions and real-world examples, attendees of the Distribution Transformers Course will be able to apply learned techniques to improve system reliability and reduce equipment downtime.

Key topics include:

• Distinction between power and distribution transformers
• Predictive and preventative maintenance strategies
• Online monitoring tools and techniques
• Oil testing and dissolved gas analysis (DGA)
• Causes and implications of transformer failures
• Troubleshooting and repair approaches for field conditions

Objectives

By the end of this Power & Distribution Transformers Course, participants will be able to:

• Enhance their understanding of transformer functionality in power systems
• Identify core principles of periodic and predictive transformer maintenance
• Apply various testing methods to assess transformer condition
• Analyze transformer oil properties and interpret diagnostic results
• Utilize online monitoring systems for early fault detection
• Recognize and address common failure modes in transformers
• Develop effective repair and reconditioning strategies for transformers in service

Training Methodology

The Power & Distribution Transformers Training Course employs an interactive and practical approach to knowledge transfer. It includes:

• Instructor-led presentations with technical illustrations
• Case studies highlighting real-world transformer issues
• Group activities and knowledge-sharing discussions
• Video demonstrations and diagnostic tool overviews
• Hands-on exercises in fault analysis and maintenance planning

Participants are encouraged to share operational challenges and apply learned techniques to their specific workplace environments.

Who Should Attend?

This training course is ideal for professionals involved in electrical maintenance, testing, and reliability in high-demand industries such as:

• Utilities
• Oil & Gas
• Mining and Mineral Processing
• Heavy Industry and Manufacturing

Specific roles who will benefit include:

• Maintenance Professionals and Technicians
• Electrical Support Engineers and Superintendents
• Testing and Protection Engineers
• Experienced Electrical Technicians across process industries

This course is suitable for both experienced personnel and those seeking to strengthen their foundational knowledge of transformer operations and reliability.

Course Outline

Day 1: Major Transformer Components and Operation

• Fundamentals of Power and Distribution Transformers

• Transformer Design

• Transformer Impedance

• Transformer Cores, Windings and Terminations

• Tap Changers and Voltage Control

• Cooling methods and Classifications to IEC standards

Day 2: Transformer Inspections and Maintenance

• Characteristics and Maintenance Procedures for Insulating Oil

• Maintenance of Transformer Cooling Systems

• Maintenance of Bushings and Insulators

• Maintenance of Transformer Mounted Ancillary Equipment

  • Temperature Gauges

  • Oil Level Gauges

  • Silica Gel Breathers

  • Overpressure Devices

  • Buchholz relay

• Maintenance and inspection of gaskets

• Detection of Leaks and Seepages

Day 3: Test Types and Methods, Interpretation of Results

• Partial Discharge On-Line Monitoring

• Oil Quality Index and the Breakdown Voltage Test

• Turn Ratio Test

• Winding Resistance Test

• Sweep Frequency Response Analysis Test

• Tan Delta Test and Polarisation Index

Day 4: Additional Maintenance and Testing of Transformers

• The Importance of Maintenance and Testing

• Dissolve Gas Analysis

• Methods and interpretation of Dissolved Gas Analysis results

• Thermography

• Transformer Noise Suppression

• Testing Transformer Protection and Controls

Day 5: Failures and Preventative Measures

• Types and Causes of Failures

• Internal Transformer Defects

• Transformer Oil Regeneration

• Insulation Drying

• Case Studies and Examples of Failures

• Discussion