Power System Protection: Part One

  • 16 available

Course summary

This course provides an essential introduction to the principles of power system protection.

It covers the role of protection, why it is required, components of protection systems and their principles of operation. It goes on to provide an understanding of basic protection theory, grading principles and fault calculations. The course includes practical exercises and builds a fundamental understanding of protective systems on electrical networks from LV up to 132kV.

Course itinerary

Role of Protection

  • Legislative duties
  • Basic terminology
  • Safety requirements
  • Principles

Components & Operation

  • LV and MV fuses – characteristics and construction
  • Time limit fuses and CT release
  • Relays, basic principles, Inst, DT, IDMT, O/C & EF

Introduction to Grading

  • Current and time grading
  • Fuses
  • IDMT
  • Definite time
  • Practical exercise

LV Networks Protection

  • Principles
  • Walk through the LV system

HV Networks Protection

  • Principles
  • Walk through HV network system

Basic Fault Calculation


  • Construction and operation
  • HV and LV fuses
  • LV fuse grading

LV ACB Electronic Relays

  • Basic principles
  • Settings explained
  • Plotting characteristics on log-log paper
  • Additional features
  • Protection management

Programme may be subject to amendment.

Very well run, with good course content and facilities, first class. Thanks

David, 15 & 16 November 2023

Extremely well presented by an extremely knowledgeable and industry experienced trainer.

Gareth, 15 & 16 November 2023

This course was a great way of introducing the fundamentals whilst providing enough info for further reading and research. Steve was very knowledgeable and approachable. A great tutor with vast experience to call upon and use as real world examples.

Adam, 15 & 16 November 2023

The course ran well, and it is clear Steve has vast experience in the subject.

Chris, 15 & 16 November 2023

Very interactive course with good discussion and excellent industry knowledge. Worked examples worked well to underpin learning.

Joshua, 15 & 16 November 2023

Good course - recap on a lot of things I've covered previously. Felt the pace was good for myself. Well presented. Looking forward to part 2.

Toby, 1-2 November 2022

The course was excellent as was Tony. I found it really relevant to my current role with regards to providing me with a better understanding of deriving fault currents with respect to my earthing study works.

Ian, 30-31 March 2022

Tony's knowledge and experience was very well absorbed, his ability to simplify advanced subject matter was well received, certainly by me.

Justin, 23-24 November 2021

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