Day 1: Introduction to SF6 Switchgear & Visual Inspection:

• Overview of 33kV SF6 Switchgear
• • Definition and purpose
• • Basic components and functions
• Importance of SF6 in Switchgear
• • Characteristics of SF6 gas
• • Advantages of SF6 over other insulating mediums
• • Environmental considerations and safety
• Visual Inspection
• • Insulation: Check the condition of the SF6 gas tank and its sealings
• • Arc Chambers & Contact Surfaces: Inspect the arc extinguishing chambers and contact surfaces for wear or signs.
• • Busbars and Connections: Check all busbar connections, cables, and busbar support insulators for tightness, corrosion, and damage.
• • SF6 Gas Pressure: Measure the pressure of the SF6 gas.

Day 2: Troubleshooting Techniques

• Common Faults in SF6 Switchgear
• • Insulation failures
• • Gas leaks
• • Contact wear and mechanical faults
• • Malfunction of relays and protection devices
• Diagnostic Methods
• • Visual inspections
• • Gas pressure and SF6 leak detection
• • Temperature and vibration monitoring
• • Electrical testing (e.g., insulation resistance, contact resistance)
• SF6 gas analysis techniques
• • Troubleshooting Tools and Equipment
• • Portable gas analyzers
• • Thermal imaging cameras
• • SF6 leak detectors
• • Pressure gauges and analyzers

Day 3 : Maintenance Procedures

• Routine Maintenance Tasks
• • Checking SF6 gas levels and pressure
• • Inspections for gas leaks and moisture contamination
• • Cleaning of electrical contacts and components
• • Mechanical operations (manual and automated)
• Preventive Maintenance
• • SF6 gas refilling and purging procedures
• • Tightening connections and replacement of worn parts
• • Ensuring correct pressure and gas purity levels
• • Insulating materials inspection
• Predictive Maintenance
• • Vibration analysis and trending
• • Thermal monitoring and infrared scanning
• • SF6 gas quality and moisture content testing

Day 4 : Safety Procedures and Precautions

• Safety Protocols for Handling SF6 Gas
• • Personal protective equipment (PPE)
• • Handling and storage of SF6 gas
• • Handling leaks and emergency response
• Emergency Shutdown Procedures
• • Isolation and de-energization steps
• • Evacuation and first-aid responses
• • Containment and recovery of SF6 gas
• Training and Certifications
• • Safety training for technicians
• • Regulatory standards and compliance

Day 5: Case Studies and Practical Applications

• Real-World Troubleshooting Scenarios
• • Hands-on exercises in diagnosing faults
• • Group discussions on solutions and methods
• Maintenance Best Practices
• • Case studies of successful maintenance projects
• • Lessons learned from real-world challenges
• Documentation and Reporting
• • Maintain proper records of all maintenance actions including gas pressure readings,
• • Document all parts replaced or repaired for future reference.
• Review and Final Assessment