Transformers and Switchgear Technology for Power Systems

Course summary

Transformers and Switchgear technology has developed enormously in recent years and power distribution network engineers are encountering problems and choices today that are vastly different from those of just a few years ago.

This course is designed to give both experienced and newly qualified engineers a comprehensive overview of the role of transformers and an essential update on the latest switchgear technology to improve decision making for safe operation, maintenance and renewal.

The course covers a range of technical options and develops an understanding of switching phenomena essential for reliable system operation. The technology update will also give you an insight into future techniques and technology, by exploring new practices being developed to enhance system reliability.

This course can be enhanced by attending our one-day Oil Diagnostics and Analysis course.

Course itinerary

Basic Transformer Design

  • Ratings, classes of equipment, cooling systems, terminations, noise enclosures, tapchangers and standards

Specifications and Purchasing

  • Company specifications, losses/loss, capitalisation, manufacturers assessment, commercial, procurement, manufacturing and acceptance testing

Delivery, Installations, Commissioning and Operation

  • Site activities.

Maintenance and Oil Sample Analysis

  • Transformer and tapchanger maintenance
  • Oil sample analysis

Transformer and Tapchanger

  • Physical inspection and operation

Condition Monitoring, Health Indices and Failures

  • Diagnostic and condition assessment
  • Health Indices
  • Remedial measures, refurbishment and life extensions
  • Failures and repairs - case studies

Introduction to Switchgear

  • Types of switchgear, basic functions; components

Standards and Procurement

  • Switchgear standards and specifications
  • Assessment and procurement issues

Switching Phenomena and Arc Extinguishing Methods

  • Arc interruption theory
  • Air, Oil SF6, Vacuum

Switchgear Mechanisms

  • Types of operating mechanisms
  • Testing

View Examples of Switchgear

Switchgear Design Issues

  • Design features and vacuum integrity
  • Contact geometry and materials
  • Switchgear design

Auto Reclosing and Network Automation

  • Auto reclose methodology
  • Types of auto-recloser
  • Remote operating capability

Switchgear Environment

  • Temperature and humidity
  • Auxiliary Components

Installation and Commissioning

  • Sequence
  • Testing
  • Walked through example.

Failure Mechanisms and Analysis

  • Procedures and techniques in failure analysis
  • Causes of failure
  • Decisions following analysis
  • Case studies

Case Studies


  • Maintenance standards and policy
  • Maintenance requirements

Condition Assessment of Switchgear

  • Asset Management
  • Condition assessment
  • Asset life cycle
  • Condition monitoring
  • Health index

Technology Updates

  • Future for gas filled switchgear
  • Circuit breaker monitoring
  • Current and voltage sensors
  • Point on wave switching
  • Automation

Programme may be subject to amendment

Why attend?

Maximise the asset life of your organisations transformer assets

  • Develop essential knowledge and skills to implement best practice
  • Mitigate against premature deterioration of critical assets
  • Reduce the risk of disruptive transformer failure and associated financial losses
  • Develop the skills needed to specify and procure vital strategic assets
  • Update your knowledge of the latest transformer technology
  • Share best practice with leading transformer engineers

Enhance your knowledge of switching phenomena and their impact on switchgear design

  • Understand problems and failure modes associated with switchgear
  • Maximise asset life and protect your company’s investment in critical switchgear assets
  • Minimise the risk that switchgear will fail to operate effectively when critically required
  • Develop the skills needed to specify and procure vital strategic assets
  • Reduce the risk of disruptive switchgear failure and associated financial loss
  • Enhance your ability to create and manage safe and reliable switchgear systems
  • Update your knowledge of the latest switchgear technology
  • Share best practice with leading switchgear engineers

EA Technology has extensive expertise in transformers and switchgear engineering and asset management, has pioneered condition assessment techniques and equipment, and is a leading centre for forensic investigation of transformer and switchgear faults at all voltages. Our training is delivered by leading specialists in the field.

Covered a wide range of switchgear & transformers with lots of relevant knowledge to take into my job. Great, knowledgeable speakers, always willing to answer questions.

Ben, 28 June 2021

Course content was in depth and well presented. Any area that was harder to understand was explained well with knowledge and patience.

Dale, 28 June 2021

Excellent course, very well delivered with interesting case studies.

Ross, 8-9 Sept 2021

Great course, great tutors. Arc quenching module covered very quickly, more time to talk through the graphs.

Adam, 12-13 January 2022

Presenters are very knowledgeable and have many years experience. They provide great detail when questioned. A good range of topics were covered. Many things mentioned I will immediately use at work.

Josh, 12-13 January 2022

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