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 operating principles, types, construction, and major components
• Generator safety requirements and essential maintenance practices
• Maintenance planning for large industrial and utility-scale generators
• Stator core construction, inspection, and condition assessment
• Stator winding design, operation, and common failure mechanisms
• Stator winding and end-winding support inspection and maintenance
• Stator winding repair techniques and quality considerations
• Insulation system construction, aging mechanisms, and life assessment
• Insulation resistance, Polarization Index (PI), and Dielectric Absorption Ratio (DAR) testing
• DC Hi-Pot testing and interpretation of insulation test results

DAY 2

Advanced Generator Diagnostics, Rotor Systems, and Excitation Maintenance

• Partial discharge testing principles and application to generator condition assessment
• Tan Delta testing, analysis, and interpretation of results
• Advanced generator diagnostic techniques and condition assessment methodologies
• Diagnostic result interpretation and identification of developing generator faults
• Stator coil and bar replacement and rewinding procedures
• Quality control and acceptance criteria for stator repair and rewinding
• Rotor construction, operating characteristics, inspection, and maintenance requirements
• Rotor failure mechanisms and field winding testing
• Pole removal, retaining ring inspection, and rotor balancing fundamentals
• Vibration monitoring, analysis, and excitation system maintenance and troubleshooting
  
   

DAY 3

Generator Cooling Systems, Bearings, Alignment, and Reliability Management

• Air-cooled, hydrogen-cooled, and water-cooled generator systems
• Hydrogen system maintenance, safety, and leak detection methods
• Water quality management and cooling system maintenance
• Generator bearing types, applications, lubrication, inspection, and maintenance
• Generator seal inspection and maintenance practices
• Generator alignment principles, measurement, and correction methods
• Generator outage planning, scheduling, and maintenance preparation
• Safe disassembly, reassembly, post-maintenance testing, and commissioning
• Maintenance documentation, reporting, reliability-centered maintenance, and failure prevention
• Lessons learned from major generator failures and strategies for improving generator reliability