Introduction:

This 3-day intensive course equips participants with the knowledge and skills necessary for the safe and effective inspection, maintenance, design, repair, and troubleshooting of circuit breakers and switchgear across low, medium, and high voltage applications.

Objectives:

• Understand the fundamental principles of electrical engineering and power systems.

• Identify different types of switchgear and their components.

• Apply safety protocols for working with electrical equipment.

• Perform routine inspections and maintenance procedures on circuit breakers and switchgear.

• Analyze and interpret data from inspections and testing.

• Design circuit breakers based on short circuit current levels and arc characteristics.

Day 1 : Fundamentals and Applications

• Review of electrical engineering basics, three-phase systems, and per-unit system.

• Introduction to voltage classifications (LV, MV, HV) and power system layouts (generation, transmission, distribution).

• Introduction to switchgear components: fuses, auto-reclosers, circuit breakers, isolators, load switches, relays, transformers.

• In-depth exploration of circuit breakers: operating principles, types (molded case, air blast, SF6), construction features.

• Hands-on practice: identifying components, understanding operational sequences, recognizing safety features.

Day 2:  Design, Maintenance, and Troubleshooting

• Short circuit analysis: per-unit system, fault types, transient phenomena, network connection for various faults.

• Circuit breaker design considerations: short circuit current rating, interrupting capacity, arc quenching methods.

• Introduction to switchgear maintenance programs: preventive, predictive, corrective.

• Hands-on workshop: performing routine maintenance procedures on circuit breakers (cleaning, lubrication, contact inspection).

• Introduction to troubleshooting methodologies: analyzing symptoms, identifying potential causes, performing isolation tests.

Day 3: Advanced Topics and Conclusion

• Advanced arc management techniques in circuit breakers.

• Introduction to relay protection schemes and their coordination with circuit breakers.

• Standards and regulations related to switchgear operation and maintenance.

• Open forum for Q&A and discussion of specific industry challenges.

• Course wrap-up: key takeaways, resources, and ongoing professional development opportunities.

Conclusion:

By successfully completing this comprehensive training, participants will gain the confidence and competence to effectively manage the lifecycle of circuit breakers and switchgear, ensuring the safe, reliable, and efficient operation of electrical power system