Power Transformer Pre-Commissioning Tests Course

Course Overview:

The aim of the course is to empower participants with the knowledge of power transformers construction and their practical use.

By the end of the course, students would have a good grasp on installing, inspecting and designing electrical transformer equipment.

Students are expected to acquire practical skills in areas that can make them experts in the field of electrical and mechanical engineering. On a broader scale, the standard maintenance required such as cooling, loading and deploying of transformers is also covered thoroughly. 

The course covers topics like defect handling, fixing of busted transformers and the analysis of transformer structures and systems. This allows the students to thoroughly understand what goes into transformer management alongside the skill itself.

Course Objectives:

By the end of the training, participants will be able to:

Have a clear understanding of the basic constructional features of power transformers, various processes during manufacturing, various fittings and accessories, type tests and routine tests in manufacturers works, pre-dispatch precautions, Nondestructive diagnostic measurements to access the present condition of transformers, installation at site, pre-commissioning testing including diagnostic tests and commissioning of the transformer and preventive maintenance practices.

Who Should Attend?

This course is intended for Electrical and Mechanical/Power Engineers, Project Engineers, Maintenance Engineers, and Supervisors and Operating Staff of electrical substations will find this course very useful for enhancing their knowledge related to transformers and its working principles, design, operation & maintenance. The course will also definitely be beneficial for all the other department people concerned with the plant operations, production, maintenance, and safety. It could be also useful for procurement and quality personnel.

Course Outlines:

Transformer Categories and Type

• Insulating Medium
• Dry Type
• Liquid-Filled Transformer
• Construction Tank Construction
• Core Construction

Application and Use

• Distribution Transformers
• Network Transformer
• Arc-Furnace Transformer
• Rectifier Transformer
• Power Transformer

Transformer Fundamentals

• Voltage Relationship
• Current Relationship
• Impedance Relationship Summary

Transformer Polarity, Terminal Markings, and Connections

• Single-Phase Transformers
• Subtractive Polarity
• Additive Polarity
• Three-Phase Transformers
• Transformer Characteristics

Preventive Maintenance of Transformers

• Transformer Installation, Acceptance, and Maintenance
• Unscheduled Maintenance
• Ordinary Maintenance
• Protective Maintenance
• Dry-Type Transformers
• Installation
• Inspection
• Acceptance Tests
• Maintenance
• Drying-Out Methods
• Storage
• Liquid-Type Transformer
• Installation
• Inspection
• Acceptance Tests
• Maintenance
• Drying-Out Methods
• Storage
• Transformer Diagnostic Guide

Transformer Testing

• AC Hi-Pot Test
• TTR Test
• Alternative Test for TTR TTR Capacitor
• Polarity Test
• Induced Potential Test
• FRA
• DC Winding Resistance
• Transformer Core Ground Test
• Polarization Recovery Voltage Test
• The Measuring Instrument
• Test Setup for Recovery Voltage Measurement on Power Transformers
• Evaluation of Measured Polarization Spectra

Online Condition Monitoring of Transformers

• Online Monitoring of Transformers
• Online Monitoring of Bushings and Lightning Arrestors