Electrical Maintenance, Testing, Inspection and Risk Assessment

• • Introduction to Switchgear, Circuit Breaker and Transformer
• • Switchgear
• • Definitions, Ratings, Typical Construction
• • Control Power System
• • Electrical Maintenance of Protective Equipment & Instrument Transformers
• • Potential & Current Transformers
• • Transformer Differential Protection
• • Feeder & Motor Protection
• • Circuit Breaker
• • Construction and Contact Operation
• • Manual and Electrical operating Controls
• • Safe Operating Methods
• • Mechanical Inspections
• • Contact Resistance Tests
• • Insulation Resistance Tests
• • Insulating Gas and Oil Analysis
• • Transformer Construction
• • Tank, Core, Coils, Types and Ratings
• • Bushings, Tap Changers, Factory Testing
• • Dry, Oil and Liquid Filled Types

• • Operation
•  → Theory of Operation, Vector and Connection Diagrams
•  → Important Electrical Relationships & Formulas

• • Auxiliary Equipment
•  → Gas Relays, Fans and Pumps, Gauges, Tap Changer Controls

• • Failure Causes
•  → Detailed analysis of several case histories
•  → Lightening, Oil Decay, Component Failures
•  → Internal & External Faults

• • Testing Practices & Standards
•  → Oil Analysis, Chemical Analysis, Dissolved Gas Analysis
•  → Furan, Inhibitor, Power Factor Water and PCB Testing

• • Electrical Testing
•  → Insulation Resistance and Polarization Index Tests
•  → Turns Ratio, Excitation Current and Polarity Testing
•  → Capacitance and Power Factor Testing
•  → Winding Resistance Tests

• • Risk Assessment
• • The need and concept of risk assessment
• • Review of the existing work procedures
• • General risk assessment relating to electrical machinery.
• • Identification of deficiencies that relate to electrical safety
• • Manpower, Public and Equipment safety
• • Risk management, Problems and case studies
• • Identification of additional safety measure related labels and signage locations within your facility.

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