Online Training – Circuit Breakers Operation and Maintenance

OBJECTIVE

• The importance of preventive maintenance check and servicing of the various types of circuit breakers
• Implementation of safe systems of work and operations
• Co-ordination of maintenance activities and maintaining system safety
• To be able to understand the component functionalities of the gas and vacuum circuit breakers
• Methods of arc extinction for MV HV circuit breakers
• Routine inspections and the functions of the micro processor component in the circuit breakers

MATERI Training Online – Circuit Breakers Operation and Maintenance

1. Introduction-Reasons for Faults-and Classification of Faults

• 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

2. 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
  • Circuit Breaking
  • 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 Requirement

3. 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

4. International Standards

• Importance and Relevance to Specifications
• ANSI and IEEE
• IEC and IEE
• Circuit Breakers and Power System

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Topik Training	: Online Training – Circuit Breakers Operation and Maintenance
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