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Start Date : 15 Sep,2024
End Date   : 19 Sep,2024
Duration    : 5 Days
Price          : $ 3,995 ( SAR 14,981.25 )




This program is designed to update participants with the latest development of Circuit Breakers and to present some of the more common and updated aspects of low, medium and high voltage switchgear maintenance. 


Course Objectives: 

This course is designed to enable participants to:  

  • List the voltage convention classifications used in this course.  

  • Describe switchgear construction.  

  • Describe a ground fault relay system.  

  • Describe the three basic types of low and medium voltage circuit breaker contacts.  

  • Describe the molded case circuit breaker 


    Course Content: 


    1. General Introduction  

    • Electrical engineering basic concepts 

    • Three phase review and per unit  

    • Voltage levels 

    • One line and three line diagram 

    • Generation system layout 

    • Transmission system layout 

    • Substation system layout 

    • Distribution system layout 


    2. Industrial Switchgears 

    • Fuses 

    • Auto-recloses 

    • Automatic sectionalizer 

    • Circuit Breakers 

    • Isolator switches 

    • Load switches 

    • Relays 

    • Current transformer 

    • Voltage transformers 


    3. CB Design Specification Based on Short Circuit Current Level 

    • Per unit system 

    • Faults on power systems 

    • Transient phenomena in power system. 

    • Symmetrical component analysis of three phase network 

    • Network connection for various fault types 

    • Current and voltage distribution in system due to a fault 

    • Effect of system on zero sequence quantities 

    • Computer programs based short circuit calculation. 


    4. CB Design Specification Based on Arc Phenomena and Circuit Interruption 

    • Arc phenomena 

    • Maintenance of the Arc 

    • Properties of Arc 

    • Arc Interruption theory 

    • Circuit Breaker Rating 

    • Circuit constants and circuit conditions 

    • Conditions of severity 

    • Restriking voltage transient 

    • Class A ultra fast transients 

    • Class B system transients 

    • Class C low transients 

    • Transmission line transient 

    • Switching transients 

    • Duties of Switchgear 


    5. LV Circuit Breakers 

    • Low voltage molded case current limiting circuit breakers 

    • Low voltage molded case circuit breakers with high breaking capacity 

    • Insulated case circuit breakers 

    • Low voltage air circuit breakers 

    • Low voltage circuit breakers specification 


    6. Modern MV and HV Vacuum CB 

    • Introduction 

    • Advantages of vacuum interruption 

    • Vacuum contactors and interrupters 

    • The vacuum medium 

    • The vacuum arc 

    • Vacuum arc stability 

    • Vacuum break down 

    • Vacuum switch construction 

    • Applications of vacuum circuit breakers 


    7. Modern MV and HV SF6 CB Introduction 

    • Basic Features of SF6 Breakers 

    • Dielectric properties of SF6 

    • Quenching properties of SF6 

    • Construction of SF6 breaker 

    • SF6 CB types 

    • Puffer type SF6 breakers 

    • Double Pressure System 

    • Single Pressure Puffer Piston System 

    • Single-Pressure Self Blast System 

    • Improvement in SF6 Breakers for HV 


    Targeted Audience: 

    • Electricians 

    • Electrical supervisors 

    • Plant electricians 

    • Operations & maintenance engineers, supervisors & technicians 

    • Maintenance technicians 

    Fundamentals of Circuit Breakers and Switchgear

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