Transformer Operational Principles, Selection and Troubleshooting
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Transformer Operational Principles, Selection and Troubleshooting Course
Introduction:
Power and distribution transformers play a vital role in power systems and are considered critical and expensive components. Failure of these transformers can result in significant costs and pose a safety risk to other major equipment and personnel, in addition to imposing substantial financial burdens on the electrical installation. The use of both oil-filled and dry-type transformers is becoming increasingly prevalent due to their exceptional qualities.
Course Objectives:
Upon the successful completion of the workshop, each participant will be able to:-
§ Describe the various classifications and types of transformer
§ Appreciate the importance of transformer maintenance
§ Analyze the various transformer test results
§ Classify the transformer cooling methods
§ Recognize the merits of transformer designs
§ Understand the principles of operation and construction of the various types of transformer
§ Identify the different components in the transformers
§ Appreciate the testing and maintenance procedures for transformers
§ Be familiar with construction of the transformer, transformer winding connections and cooling systems
§ Recognize the effects of transformer off-load and on-load tap changers
Who Should Attend?
This course is intended for technicians and maintenance staff that will be able to comprehend the types, construction, operations, function of transformers. This will enable them to carry out effective maintenance activities. This course is suitable for a wide range of professionals but will greatly benefit those who are working as Electrical Engineers, Maintenance Technicians, Electrical Supervisors, Engineering Professionals, and Managers of the electrical engineering department.
Course Outlines:
Introduction, General Principles, and Classification
- General classification and types of transformer
- Transformer windings, the interconnection of windings and tertiary windings
- Parallel operation of transformers and paralleling requirements
- Standards for transformers, types, and requirements
- Transformer tapings and connections
- Ability to withstand short circuit, impedance Percentage, and Sound Level
- Case studies
Transformer Constructional Details
- Transformer oil, characteristics, oil oxidation, and breakdown voltage
- Effect of oil expansion, breathing action, Buchholz relay, explosion vents
- Instrument transformers
- Transformers for Industrial Applications
- Internal and external cooling of transformers
- Construction and details of transformer Cooling systems
Transformer Features and Thermal Performance
- Thermal performance and cyclic rating of transformers
- Transformer electromagnetic forces radial and axial
- Transformer winding and core construction
- Transformer tanks, radiators and tank Losses
- Sound and noise levels in transformers
- Gas-insulated transformers
Transformer Operation and Maintenance
- Distribution voltage adjustment, off-load and on-load tap changing
- Earth fault and over-current protection of distribution transformers
- Transformer components maintenance
- Condition-based maintenance for transformers
- Guidelines on how to care for your distribution transformer
- Remote monitoring of transformers
Transformer Testing and Troubleshooting
- Troubleshooting transformer faults
- Site acceptance tests
- Transformer routine tests
- Measurement of winding resistance and voltage ratio
- Insulation resistance tests
- Manufacturer and transformer type tests