Safety Operation and Maintenance in Electrical Power Supply Course

Course Overview:

This course has been designed to equip participants with the knowledge and skills related to the technology, operation, maintenance and troubleshooting of circuit breakers and switchgear.

Participants will delve into substation layouts, types of interrupting devices, and methods of controlling motors within the scope of low, medium, and high voltage systems. 

The course encompasses the maintenance of SF6 gas-insulated high voltage circuit breakers leak detection and purity analysis. The participants will also be taught the use of advanced testing instruments, routine tests and fault analysis. 

This course helps beginners grasp the fundamentals, enabling supervisors, electricians and maintenance personnel to operate and maintain electrical systems that include circuit breakers and switchgear.

Course Objectives:

Upon successful completion of this course, the delegates 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
• Analyze the common faults in an electrical installation
• Inculcate greater confidence, working safely on circuit breakers and switchgears

Who Should Attend?

This training course is suitable for a wide range of technical professionals but will greatly benefit:

• Electricians
• Electrical supervisors
• Plant electricians
• Operations & maintenance engineers, supervisors & technicians
• Maintenance technicians

Course Outlines:

The Technology of Circuit Breakers and Switchgear

• Typical substation arrangements with circuit breaker arrangements
• Low and medium voltage motors operations and characteristics
• Motor starting methods and motor control centers
• Nameplate ratings and interpretation
• Motor and generator fault contributions
• Low, medium, and high voltage equipment in an electrical installation

Operation of Various Types of Interrupting Equipment

• CT's and VT's operation, construction, and classifications
• Basic protection requirements and LSIG
• Molded Case circuit breakers
• Air and load break switches, reclosers operation and construction
• Vacuum contactors applications
• Vacuum circuit breakers operations and characteristics

Maintenance of Gas-Filled Circuit Breakers

• Conventional Sulphur hexafluoride (SF6) gas circuit breaker construction and operation
• New green grid gas for electrical switchgear
• SF6 gas leak detection methods
• Dew point and purity tests
• IAC and partition classes
• Vacuum interrupter and SF6 circuit breakers

The Use of Test Equipment for Operations and Maintenance

• Digital voltmeter (DVM), oscilloscope, insulation tester applications
• State of the art circuit breaker tester
• Motor diagnostics instrument
• Circuit breaker routine tests
• NEC checklists to ensure the correct installation
• Troubleshooting methodology for electrical equipment

The Identification and Repair of Problems/Failures

• Common electrical installation faults
• Harmonics and its effects
• Phase imbalance and phase sequence effects
• Procedures for fault finding
• Discussion on common faults and incidents