COURSE OVERVIEW:

The thermal management of a power transformer is the single most important factor determining its operational life and load-carrying capacity. This course provides a technical exploration of "Cooling Systems," focusing on the physics of heat transfer from the core and windings to the external environment. Participants will explore the mechanics of "Natural" versus "Forced" convection, learning how the degradation of cooling efficiency can lead to accelerated paper insulation aging and premature failure.

The scope of this training addresses the full spectrum of cooling hardware, including radiators, fans, oil pumps, and heat exchangers. It covers the technical nuances of "Cooling Control" logic, focusing on the settings for "Winding Temperature" and "Top Oil" alarms. The curriculum provides a detailed focus on the maintenance of auxiliary components, ensuring that participants can troubleshoot failures in fan motors, control contactors, and flow indicators before they impact the transformer's "Hot-Spot" temperature.

Coverage includes the implementation of rigorous inspection protocols for "Radiator Corrosion" and "Oil Leakage." Attendees will learn to utilize "Infrared Thermography" to detect blocked cooling fins and to analyze the impact of ambient conditions on "Transformer Derating." By combining thermal engineering with practical maintenance workflows, the course equips professionals with the expertise required to maximize the cooling performance and reliability of critical substation assets.

COURSE OBJECTIVES:

After completion of this course, the participants will be able to:

• Define the primary "Cooling Classes" (ONAN, ONAF, OFAF, ODWF).
• Explain the physics of "Convection" and "Radiation" in transformers.
• Identify the components of a "Radiator Bank" and "Cooling Manifold."
• Configure "Winding Temperature Indicators" (WTI) and "Oil Temperature" (OTI).
• Maintain "Cooling Fan" motors and "Oil Circulation" pumps.
• Troubleshooting "Control Cabinet" wiring and "Auto/Manual" logic.
• Utilize "Infrared Thermography" to identify cooling obstructions.
• Execute "Cleaning and Corrosion Protection" for cooling fins.
• Analyze the impact of "Ambient Temperature" on transformer MVA rating.
• Inspect and test "Oil Flow" and "Pressure" sensors.
• Manage "Gasket Integrity" and "Oil Leak" repair techniques.
• Document "Thermal Performance" logs for asset health trending.

TARGET AUDIENCE:

This course is intended for Substation Maintenance Technicians, Transformer Engineers, Plant Electricians, and Operations Supervisors.

TRAINING COURSE METHODOLOGY:

A highly interactive combination of lectures, discussion sessions, and case studies will be employed to maximize the transfer of information, knowledge, and experience. The course will be intensive, practical, and highly interactive. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. The attendants will also be encouraged to raise more of their questions and to share in developing the right answers using their analysis and experience. There will also be some indoor experiential activities to enhance the learning experience. Course material will be provided in PowerPoint, with necessary animations, learning videos, and general discussions.

The course participants shall be evaluated before, during, and at the end of the course.

COURSE CERTIFICATE:

National Consultant Centre for Training LLC (NCC) will issue an Attendance Certificate to all participants completing a minimum of 80% of the total attendance time requirement.