Power Transformer Testing & Maintenance 28th July – 1st April 2025 (Weekdays)
- Description
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This course aims to equip participants with the knowledge and skills necessary for effective testing, maintenance, and troubleshooting of power transformers to ensure their reliability and longevity.
This course is ideal for electrical engineers, technicians, and maintenance personnel involved in the operation and maintenance of power transformers. It balances theoretical knowledge with practical skills to ensure participants are ready to handle real-world challenges.
Course Objectives:
1. Understand Transformer Fundamentals: Gain a thorough understanding of transformer design, operation, and principles.
2. Identify Common Issues: Learn to identify and diagnose common transformer faults and operational problems.
3. Perform Testing Procedures: Develop skills in conducting various testing procedures, including electrical and mechanical tests.
4. Maintenance Practices: Learn preventive and corrective maintenance practices to extend transformer lifespan.
5. Safety Protocols: Understand safety standards and procedures for working with high-voltage transformers.
6. Interpretation of Test Results: Learn to analyze and interpret test results for effective decision-making.
7. Develop Troubleshooting Skills: Build troubleshooting skills for resolving issues during transformer operation.
Course Contents:
1. Introduction to Power Transformers:
Overview of transformer types and applications
Transformer construction and components (core, winding, insulation)
Principles of operation (magnetic flux, core losses, etc.)
Importance of testing and maintenance
2. Transformer Testing Methods:
Electrical Testing:
Insulation resistance testing (Megger testing)
Transformer turns ratio (TTR) testing
Power factor and dissipation factor testing
Sweep frequency response analysis (SFRA)
Dielectric testing (AC and DC Hi-pot tests)
Leakage reactance testing
Mechanical Testing:
Core inspection and tests
Bushing tests and inspection
Tap changer testing and inspection (manual and automatic)
Diagnostic Testing:
Dissolved gas analysis (DGA)
Partial discharge testing
Infrared thermography for hot spot detection
3. Transformer Maintenance Practices:
Preventive Maintenance:
Visual inspections and routine checks
Cleaning, oil testing, and analysis (moisture content, dielectric strength)
Importance of maintaining cooling systems (oil, air, water cooling)
Corrective Maintenance:
Identifying and repairing oil leaks
Replacing faulty components (bushings, tap changers, etc.)
Reconditioning and refurbishing transformers
4. Safety Standards and Procedures:
Electrical safety rules for high-voltage equipment
Personal protective equipment (PPE) and safety gear
Lockout/Tagout (LOTO) procedures
Handling and disposal of transformer oil (environmental safety)
5. Analysis and Interpretation of Test Results:
Understanding normal vs. abnormal test results
Interpreting dissolved gas analysis results for fault diagnosis
Using test data for predictive maintenance planning
Transformer life assessment and remaining life estimation
6. Troubleshooting and Fault Diagnosis:
Identifying symptoms of common transformer issues (e.g., overheating, noise, oil quality deterioration)
Troubleshooting methods for internal and external faults
Case studies of transformer failures and resolutions
7. Practical Hands-On Sessions:
Conducting actual tests on a transformer
Case studies and hands-on troubleshooting exercises
Understanding test equipment and software tools used in transformer diagnostics
8. Course Wrap-up and Assessment:
Review of key concepts
Q&A sessions for participant queries
Course assessment (written or practical tests)
