Course Details

This course is appropriate for a wide range of professionals but not limited to:

• Generator Maintenance Technicians
• Power Plant Engineers
• Electrical Supervisors
• Rotating Equipment Specialists
• Reliability and Asset Managers

• Expert-led sessions with dynamic visual aids
• Comprehensive course manual to support practical application and reinforcement
• Interactive discussions addressing participants’ real-world projects and challenges
• Insightful case studies and proven best practices to enhance learning

By the end of this course, participants should be able to:

• Develop comprehensive maintenance and testing programs for large generators.
• Diagnose and correct common mechanical and electrical faults in generator rotors and stators.
• Master inspection and testing procedures for insulation and winding health using advanced tools.
• Apply best practices for cooling system maintenance, including hydrogen, water, and air systems.
• Execute safe and efficient procedures for generator outage planning, disassembly, and reassembly.
• Analyze excitation system performance and troubleshoot common control issues.

DAY 1

Generator Fundamentals, Stator Systems & Insulation
Generator Fundamentals

• Generator operating principles and types 
• Generator construction and major components 
• Generator safety requirements and maintenance practices 
• Maintenance planning fundamentals 

Stator Core and Winding Maintenance

• Stator core construction and inspection 
• Stator winding design and operation 
• Common stator winding failure mechanisms 
• Stator winding repair techniques 
• End-winding support systems and maintenance 

Insulation Systems and Testing

• Insulation system construction and aging mechanisms 
• Insulation life assessment 
• Insulation resistance testing 
• Polarization Index (PI) and Dielectric Absorption Ratio (DAR) 
• DC Hi-Pot testing 
• Interpretation of insulation test results 

DAY 2

Advanced Diagnostics, Rotor Systems & Excitation
Advanced Generator Diagnostics

• Partial discharge testing principles 
• Tan Delta testing and analysis 
• Condition assessment methodologies 
• Diagnostic result interpretation 

Stator Repair and Rewinding

• Coil and bar replacement techniques 
• Rewinding procedures 
• Quality control and acceptance criteria

Rotor Maintenance and Testing

• Rotor construction and operating characteristics 
• Rotor inspection and maintenance requirements 
• Rotor failure mechanisms 
• Field winding testing 
• Pole removal procedures 
• Retaining ring inspection methods 
• Rotor balancing fundamentals 
• Vibration monitoring and analysis 
   

Excitation Systems

• Excitation system principles and operation 
• Brushless excitation systems 
• Static excitation systems 
• Excitation system maintenance and troubleshooting 
  
   

DAY 3

Cooling Systems, Bearings, Alignment & Reliability
Generator Cooling Systems

• Air-cooled generator systems 
• Hydrogen-cooled generator systems 
• Water-cooled generator systems 
• Hydrogen system maintenance and safety 
• Leak detection methods 
• Water quality management and cooling system maintenance 

Bearings, Seals and Alignment

• Generator bearing types and applications 
• Lubrication practices 
• Bearing inspection and maintenance 
• Seal inspection and maintenance 
• Generator alignment principles and correction methods 

Outage Management and Reliability Improvement

• Generator outage planning and scheduling 
• Disassembly and reassembly considerations 
• Post-maintenance testing and commissioning 
• Maintenance documentation and reporting 
• Reliability-centered maintenance concepts 
• Failure prevention strategies 
• Lessons learned from major generator failures