Transformers


Description:

Explanation of the components that make up a transformer, how transformers are rated, and the different types of transformers in use today

Learning Outcome:

Upon the completion of this module, you will be able to:

  1. Explain the purpose of a transformer.
  2. Describe the components of a transformer.
  3. List the common defects you may encounter when working with transformers.
  4. Explain how the power-handling capacity of a transformer is measured.
  5. Describe the features of residential transformers.
  6. Describe the two types of fuses in transformers.
  7. Explain the procedure for testing residential transformers.
  8. Define open circuit voltage (OCV).
  9. Describe multi-tapped transformers.
  10. Explain the procedure for testing multi-tapped transformers.
  11. Describe the features of commercial transformers.
  12. Explain how multi-voltage commercial transformers can be used.

Topic 1: Components of a Transformer and Transformer Ratings

  • Topic Introduction and Objectives
  • Basic Components of a Transformer
  • Common Defects
  • Transformer Ratings
  • Check-point Question
  • Check-point Question
  • Check-point Question
  • Topic Summary

Topic 2: Residential Transformers

  • Topic Introduction and Objectives
  • Features of Residential Transformers
  • Transformer Fusing
  • Testing the Transformers
  • Testing the Transformers: A Short in the Secondary
  • Check-Point Question
  • Check-Point Question
  • Topic Summary

Topic 3: Multi-Tapped Primary Transformers

  • Topic Introduction and Objectives
  • Multi-Tapped Primaries
  • Testing the Transformers
  • Check-Point Question
  • Check-Point Question
  • Topic Summary

Topic 4: Commercial Transformers

  • Topic Introduction and Objectives
  • Features of Commercial Transformers
  • VA Ratings of Commercial Transformers
  • Multi-Voltage Commercial Transformers
  • Uses of Multi-Voltage Commercial Transformers
  • Testing Commercial Transformers
  • Calculating Current Draw of a Transformer
  • Check-Point Question
  • Check-Point Question
  • Topic Summary
  • Assessment