Circuit Breaker Maintenance

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  • Fees : 2900 $
  • Date 06 Jan 2019
  • Location Abu Dhabi, English

Circuit Breakers Maintenance


Course Introduction:


Electric Power Systems are designed to serve loads in a safe and reliable manner. One of the major considerations in the design of any power network is adequate control of short-circuits or “faults” as they are generally referred to. If faults are not controlled they can cause unnecessary loss of electricity service with all of its many ramifications.


Electric Power Systems are designed to be as fault free as possible through appropriate network design, equipment design, proper installation and on-going maintenance. The Circuit breaker and its associated fault detection equipment, protective relaying, is an extremely important device, through its role of clearing short-circuit currents, disconnecting faulty elements from the power network, and thus maintaining the overall integrity of the power network.

Course Learning Objectives:


On completion of the course the trainees will understand


  • The Role and basic principles of the Circuit Breaker
  • Types of circuit breakers and selection including those specifically employed by the client
  • Testing and Maintenance policies
  • Safe working practices


Course Duration:  Five Days



Training Methodology


The latest educational methods and strategies are employed. The course is designed to maximize delegate participation. From the outset, the goals of each participant are discussed to ensure needs are fulfilled as far as possible. Questions and Answers are encouraged throughout, during the case studies, practical demonstrations and at the daily wrap-up sessions



Course Contents


  • Introduction – Reasons for Faults – and Classification of Faults
  • Distinction between Load and Fault Current
  • Sources of Short-Circuit Current
  • Rotating Machine Reactance Changes
  • Introduction to Fault Calculations





  • Overview of Power System Protection
  • Measurement – Voltage and Current Transformers
  • Protective Device Characteristics
  • Principles of Co-ordination
  • Types of Protection Systems
  • The Role and importance of the Circuit Breaker in Power Systems
  • General Principles of Operation of Circuit Breakers
  • Introduction to types of Circuit Breaker and Selection Principles
  • Oil
  • Vacuum
  • Air Break
  • Gas-Insulated Breakers


  • Design, Construction and Operation of Circuit Breakers employed by Client
  • Testing Procedures and Test Equipment
  • Maintenance Procedures
  • Troubleshooting
  • Refurbishing a low oil and vacuum type circuit breakers


  • Other Related Switching Devices


  • Motor Starting Systems employed by the client.
  • Testing Procedures and Test Equipment
  • Maintenance Procedures
  • Troubleshooting


  • Introduction to Safe Working


  • Alternative Circuit Breaker Maintenance Strategies and Selection


  • Case studies, exercises and discussions


Course Evaluation & Summary


Who Should Attend:


Engineers and Technicians who are directly involved in the design, specification, purchasing, maintenance or day to day Operation of Circuit Breakers

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