Safe Operations & Maintenance of Circuit Breakers & Switch gears

Details :

This training course will provide delegates a solid understanding on the safe use of circuit breakers, switchgears and associated equipment that requires correct initial selection, operation and maintenance. Strong emphasis on detailed understanding of how these devices should be installed, the local substation and system ratings, and how the various breakers operate; in order to enable accurate troubleshooting and subsequent repair.

On completion, delegates will be equipped or will have enhanced skills to ensure that circuit breakers and switchgear are installed, operated safely and maintained in a fashion that ensures safe and stable operation. Delegates will be exposed to recognize faults and ensure the underlying causes are identified to reduce possible further failures.

This training course will feature:

  • Understanding the types and functions of circuit breakers
  • Operation principle of medium voltage circuit breakers
  • Identification of testing equipment and instruments
  • Interpretation of single line drawings
  • Troubleshooting and maintenance of switch gears

By the end of this training course, participants will be able to:

  • Understand the various types and operations of circuit breakers
  • Determine the components and operations switchgears
  • Explain the different types of testing instruments
  • Analyse the common faults in an electrical installation
  • Inculcate greater confidence, working safely on circuit breakers and switchgears
  • Electricians
  • Electrical supervisors
  • Plant electricians
  • Operations & maintenance engineers, supervisors & technicians
  • Maintenance technicians

Day One: The Technology of Circuit Breakers and Switchgear

  • Typical substation arrangements and motor control centres
  • Motor and generator fault contributions
  • Low, medium and high voltage equipment in an electrical installation
  • Name plate ratings - interpretation
  • CT's and VT's operation, construction and classifications
  • Basic protection requirements


Day Two: Operation of Various Types of Interrupting Equipment

  • High voltage fuses and fused switches
  • Moulded case circuit breakers
  • Air and load break switches operation and construction
  • Vacuum contactors applications
  • Vacuum circuit breakers operations and characteristics
  • SF6 circuit breakers types and operation principles


Day Three: The Use of Test Equipment for Operations and Maintenance

  • Digital voltmeter (DVM), oscilloscope, insulation tester applications
  • Temperature probes/ IR pyrometers
  • Cable fault locators and techniques
  • NEC check lists to ensure the correct installation
  • Troubleshooting methodology for electrical equipment
  • Group exercises and case studies


Day Four: The Interpretation and Use of Drawings and Job Plan

  • Single-line electrical drawings control schematics
  • Switchgear name plate information
  • Logic and standard symbols
  • Procedure preparation for fault finding
  • Documentation and follow up safety procedures for switchgears
  • Safety considerations and training


Day Five: The Identification and Repair of Problems/Failures

  • Common mode failures in switchgears
  • Phase imbalance and phase sequence effects
  • Ground faults - cable and busbar faults
  • A review of Safety Requirements
  • Hazardous area classifications
  • NEC electrical codes applications
  • All lectures are in colorful presentation
  • All lectures are interspersed with interactive discussion
  • All lectures include group discussion, case history and exercises
  • Actual major incidents as well as industry experience are reviewed
  • Participants receive a multicolor course manual
  • Pictures of real incidents and case history are shown
  • Videos on the subject are shown

daily from 09:00 to 14:00