Engineering and Maintenance
Advanced Operation and Maintenance of Circuit Breakers and Switchgear
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Advanced Operation and Maintenance of Circuit Breakers and Switchgear Course
Introduction:
Circuit breakers play a vital role in ensuring the safe distribution of electrical power and maintaining uninterrupted supply to consumers. It is crucial to operate, maintain, and install this equipment in a manner that prioritizes safety.
Course Objectives:
By the end of the training, participants will be able to:
- Learn the importance of preventive maintenance check and servicing of the various types of circuit breakers
- Gain detailed information on the implementation of safe systems of work and operations
- Co-ordination of maintenance activities and maintaining system safety
- Understand the component functionalities of the gas and vacuum circuit breakers
- Familiarize with the methods of arc extinction for MV HV circuit breakers
- Familiarize with the routine inspections and the functions of the microprocessor component in the circuit breakers
Who Should Attend?
This course is intended for all Electrical Staffs.
Course Outlines:
Introduction - Reasons for Faults - and Classification of Faults
- The distinction between load and fault current
- Sources of short-circuit current
- Introduction to fault calculations
- Balanced and unbalanced faults
Overview of Power System Protection
- Measurement - voltage and current transformers
- Protective device characteristics
- Types of protection systems
- The role and importance of the circuit breaker in power systems
General Principles of Arc Extinction
- Overview of types of circuit breaker
- Air-Break
- Vacuum
- Gas
- Other related switching devices
- The single-line diagram
- Substation layouts
Air-Break
- Principles of arc extinction
- D.C. circuit breaking
- A.C. circuit breaking
- Contacts and arc initiation
- Arc chutes
- Performance characteristics
- General construction Principles
Vacuum
- History – The early years
- The vacuum arc – An overview
- Current interruption in vacuum
- Methods of keeping the arc diffuse
- Current chopping – general implications
- Vacuum interrupters in series
- Design of vacuum switchgear
- Maintenance and testing requirements
SF6 Gas
- Properties of SF6
- Principles of arc extinction
- Features of construction
- Mechanism principles
- Insulation principles
- Gas leak problems
- Specific supervision requirements
- Circuit power factor considerations
- Maintenance and testing requirements
International Standards
- Importance and relevance to specifications
- ANSI and IEEE
- IIEC and IEE
Circuit Breakers and Power System
- Circuit breaker failure and the effects on power system operation
- Circuit breaker inspection, testing, and maintenance program
- The Principles of modern substation control systems
- Power circuit breaker maintenance