Overview

Overhauling of Distribution Transformers

Course Overview

Distribution transformers are essential components of electrical networks, and their reliability directly impacts service continuity. Proper overhauling restores performance, prevents failures, and extends equipment life.

This technical two-day program provides practical knowledge of transformer overhaul procedures, including inspection, repair, testing, and recommissioning. The course emphasizes safety, precision, and adherence to industry standards.

Participants will gain the expertise needed to support effective maintenance and ensure reliable transformer operation.

 Learning Outcomes

• Understand the complete process of dismantling, inspecting, repairing, and reassembling distribution transformers
• Identify common faults and deterioration requiring overhaul intervention
• Apply safety procedures and technical standards during overhaul activities
• Perform essential testing to verify transformer performance after repair
• Support maintenance practices that extend transformer life and reliability

Course Outline (2 Days)

Module 1: Transformer Fundamentals

• Construction and operation
• Types of distribution transformers
• Common faults

Module 2: Inspection & Testing

• Visual inspections
• Electrical testing
• Oil analysis

Module 3: Overhauling Procedures

• Disassembly steps
• Core and winding checks
• Reassembly techniques

Module 4: Maintenance Best Practices

• Preventive maintenance
• Condition monitoring
• Documentation

Module 5: Safety & Compliance

• Electrical safety standards
• Risk assessment
• Environmental considerations