Instrument transformers are the special purpose transformers that are used in power systems for taking measurements.

Two types of instrument transformers are there

  1. Current transformer
  2. Potential transformer

The Lecture Slide below introduces you to some basic terms and important concepts associated with instrument transformers.

List of Contents

  1. What is an instrument transformer
  2. What is Potential Transformer
  3. What is Current Transformer
  4. What is Burden
  5. What is CCVT
  6. How polarity of a CT is shown
  7. What is rating factor or RF of CT
  8. What is usual rating factor of CT
  9. What is burden rating of CT