Technical Programs
Dissolved Gas Analysis in Transformer Insulating Oil
OVERVIEW
This seminar enhances a better understanding of how transformer insulating oil reacts after long use and for maintenance management and its technical team to prepare for its maintenance programs. This will also guide non-chemist staff at the site to understand how to read insulating oil analysis, specifically DGA and Oil Quality tests.
WHO SHOULD ATTEND
- Electrical Technicians
- Asset Engineers & Managers
- Transformer Operation & Maintenance Personnel
- Chemists & Chemical Technicians
LEARNING OBJECTIVES
By the end of this training, the participants will be able to:
- Understand the mechanisms of gas formation in transformer insulating oil.
- Apply dissolved gas analysis (DGA) diagnostic tools for transformer condition assessment.
- Identify and interpret the different insulating oil tests used in transformer analysis.
- Perform proper sampling procedures for transformer insulating oil.
- Monitor and evaluate dissolved gas trends to support preventive maintenance and fault diagnosis.
TOPICS TO BE DISCUSSED
DAY 1
Course Introduction
A. Oil Quality Test
- Understand the purpose and importance of standard insulating oil quality tests, enabling accurate assessment of transformer health and reliability in daily operations.
- Identify the different oil quality tests used for transformer assessment, enhancing technical competence and problem-solving skills.
- Interpret test results in relation to oil condition and transformer performance, supporting informed maintenance decisions and operational efficiency.
- Recognize abnormal results that may indicate deterioration or faults, improving troubleshooting skills and positioning participants for advanced roles in asset management.
B. IEEE Specifications
- Become familiar with relevant IEEE standards for transformer insulating oil and DGA, ensuring compliance and demonstrating professional expertise.
- Understand acceptable limits and criteria defined in the standards, supporting accurate decision-making in maintenance and operations.
- Apply IEEE specifications when evaluating oil test and DGA results, enhancing credibility and reliability in technical roles.
- Ensure compliance with standards in transformer condition monitoring, strengthening professional reputation and career growth opportunities.
C. Principles of Dissolved Gas Analysis
- Understand the mechanisms of gas generation in transformer insulating oil, enabling early fault detection and reducing operational risk.
- Identify key gases associated with different fault types, improving diagnostic skills and technical competency.
- Understand the relationship between gas patterns and transformer operating conditions, enhancing ability to assess transformer health effectively.
- Interpret basic DGA results using established principles, supporting proactive maintenance and professional development in power system operations.
- D. Factors Influencing Gas-in-Oil Concentrations During Storage
- Identify factors affecting gas concentrations during oil sampling and storage, ensuring accuracy of DGA results in real-world operations.
- Understand the impact of handling and storage conditions on DGA accuracy, reducing errors and demonstrating reliability in technical work.
- Recognize sources of contamination or gas loss in oil samples, enhancing sample integrity and operational confidence.
- Apply best practices to preserve sample integrity, supporting consistent results and positioning participants as skilled professionals in transformer maintenance.
E. Gas-in-Oil Standards
- Understand international and industry gas-in-oil standards, enabling adherence to best practices and regulatory compliance.
- Identify acceptable gas concentration limits and trending criteria, supporting accurate condition assessment and risk management.
- Compare results against standard thresholds for condition assessment, improving analytical skills and decision-making in maintenance planning.
- Use standards as a basis for maintenance and operational decisions, strengthening technical judgment and professional credibility.
F. Different DGA Diagnostic Tools
- Understand the principles of various DGA diagnostic methods, enhancing technical expertise and analytical capability.
- Compare the strengths and limitations of different diagnostic tools, supporting selection of appropriate tools for operational needs.
- Apply appropriate DGA tools for fault identification, improving troubleshooting skills and proactive maintenance performance.
- Support maintenance decisions using diagnostic tool results, demonstrating leadership and advanced competency in transformer asset management.
G. Hands-On: Insulating Oil Analysis
- Perform proper transformer oil sampling procedures, ensuring accuracy and reliability in real-world applications.
- Conduct basic insulating oil tests safely and accurately, building practical technical skills and confidence.
- Analyze and interpret oil test and DGA results, supporting informed maintenance decisions and operational efficiency.
- Document findings and recommend appropriate follow-up actions, enhancing professional accountability and career development opportunities.
- H. DGA Sampling Procedures & Basic Interpretations of Lab Results
- Perform transformer oil sampling using syringe and bottle methods for DGA and oil quality tests, ensuring accurate results that support maintenance decisions and enhance professional credibility.
- Apply proper handling, storage, and preservation of oil samples, minimizing errors and demonstrating reliability in technical responsibilities.
- Interpret DGA results using IEEE C57.104-2008/IEC60599, DUVAL’s Triangle, and DUVAL’s Pentagon, enabling early fault detection and strengthening analytical skills valuable for career advancement.
- Apply case studies to correlate gas patterns with transformer faults, improving problem-solving abilities and preparing participants for higher-responsibility roles in asset management.
I. Online Dissolved Gas Monitoring
- Understand the evolution and capabilities of online DGA monitoring systems, providing context to implement modern solutions and stay current in the industry.
- Identify gases monitored at different stages (H₂, CO, 5 fault gases, 9 key gases) to select appropriate monitoring strategies, enhancing technical decision-making and operational expertise.
- Recognize practical applications and limitations of online DGA monitoring, supporting informed maintenance planning and demonstrating leadership in technical roles.
- Compare offline DGA testing with online monitoring, improving efficiency, proactive fault management, and positioning participants as forward-thinking professionals.
- J. Operating Principles of Online DGA Monitor
- Understand the fundamental operating principles of online DGA monitors to effectively oversee monitoring systems and build technical mastery.
- Identify the components and functions of online DGA systems to troubleshoot and maintain equipment, boosting confidence and competence in specialized roles.
- Recognize how online monitors detect and quantify gases in transformer oil, supporting accurate condition assessment and professional credibility.
- Analyze data output from online DGA systems to make informed decisions that improve transformer reliability and strengthen leadership skills in operations.
K. Advantages of Online DGA Monitor
- Understand the benefits of continuous transformer condition monitoring to enhance preventive maintenance practices and showcase proactive technical capabilities.
- Recognize how online DGA improves early fault detection and reliability, reducing operational risk and highlighting participants’ value to their organization.
- Compare efficiency and accuracy of online DGA versus periodic lab testing, enabling optimized workflows and demonstrating strategic thinking.
- Apply knowledge of advantages to implement effective monitoring strategies, improving asset management, decision-making, and career growth opportunities in technical leadership.
RESOURCE PERSON

Hope Pallones, RCh
Laboratory Chemist
Westco Electrical & Equipment Corp.
Ms. Pallones graduated Bachelor of Science in Chemistry in Pamantasan ng Lungsod ng Maynila. she has twenty years of experience in chemical laboratory analysis. She has a solid background on ISO 17025, ISO 9001, cGMP based on PICS and FDA In addition, she has significant experience in auditing based on ISO 17025 and ISO 9001. Also, a significant exposure in equipment calibration on the laboratory.
Extensive knowledge on quality control, good laboratory practices and good manufacturing practices. She attended a training on Condition Assessment through Laboratory Analysis by DOBLE Engineering.
REQUIREMENTS
- No strict requirements required.
- Open to Electrical Engineers, Registered Master Electricians, Electrical Technicians, Maintenance Personnel, Energy Auditors, Facility Engineers, Engineering Students, and individuals involved in electrical systems, power distribution, and energy management.
- Basic knowledge of electrical systems and power distribution is an advantage but not mandatory.
TRAINING INCLUSIONS
- Certificate of Attendance
- E-Handouts
- Meals (for in-person training)
- Earn CPD Points for ELECTRICAL ENGINEERING COUNCIL
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