COURSE OVERVIEW:

Distribution transformers are the workhorses of the electrical network, directly interfacing with industrial and residential consumers. This course provides a technical framework for the "Operation and Maintenance" of medium-voltage distribution units, focusing on pole-mounted, pad-mounted, and indoor substation configurations. Participants will explore the mechanics of "Voltage Transformation" at the edge of the grid, learning how to manage the unique stresses of load fluctuations, phase unbalance, and lightning surges.

The scope of this training addresses the practical maintenance requirements of small-to-medium power units, including "Oil Quality" management and "Bushing" integrity. It covers the technical nuances of "Overload Protection," focusing on the selection of "Expulsion Fuses" and "Bay-O-Net" protection in pad-mounted units. The curriculum provides a detailed focus on "Safe Operating Procedures," ensuring that participants can perform tap adjustments, oil sampling, and visual inspections without compromising personnel safety.

Coverage includes the implementation of rigorous diagnostic routines, such as "Infrared Thermography" and "Acoustic Detection" of internal tracking. Attendees will learn to manage "Grounding and Bonding" at the distribution level, troubleshoot "Neutral Overheating," and evaluate the impact of "Solar PV" backfeeding on transformer life. By combining practical fieldwork with distribution engineering principles, the course equips professionals with the expertise required to ensure the continuous and safe operation of the distribution infrastructure.

COURSE OBJECTIVES:

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

• Define the primary types of "Distribution Transformers" and their roles.
• Identify the components of "Pole-Mounted" and "Pad-Mounted" units.
• Execute "Visual Inspections" for leaks, rust, and bushing cracks.
• Perform "Oil Sampling" for basic chemical and dielectric testing.
• Adjust "Off-Circuit Tap Changers" safely for voltage correction.
• Select and replace "High-Voltage Fuses" and "Current-Limiting Fuses."
• Utilize "Infrared Thermography" to detect "Hot" connections.
• Execute "Insulation Resistance" (Megger) testing in the field.
• Manage "Neutral Grounding" and "Tank Bonding" for safety.
• Troubleshoot "Audible Noise" and "Vibration" complaints.
• Evaluate the impact of "Unbalanced Loading" on neutral current.
• Conduct "Site Audits" for environmental safety and clearance.

TARGET AUDIENCE:

This course is intended for Distribution Linemen, Substation Technicians, Industrial Electricians, and Electrical Maintenance 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.