Understanding Parallel Operation of Transformers-1 — Lesson 4

This lesson covers the concept of parallel operation of transformers, a crucial topic in electrical engineering. It explains why parallel operation of transformers is necessary and how it is achieved. The lesson illustrates the process using two transformers, A and B, connected in parallel. It highlights the conditions for parallel connection, emphasizing that the voltage ratings of the primary and secondary must be the same. The lesson also discusses the practical application of this concept in power distribution systems, particularly when the demand for power is growing in a locality.

Video Highlights

01:03 - Description of how transformers are connected in parallel
09:49 - Discussion on the benefits of operating transformers in parallel
22:00 - Calculation of current distribution in transformers operating in parallel
34:58 - Explanation of how load current is shared between transformers operating in parallel

Key Takeaways

• Parallel operation of transformers involves connecting the primaries and secondaries of two or more transformers in parallel.
• The voltage ratings of the primary and secondary of the transformers must be the same for parallel connection.
• Parallel operation of transformers is particularly useful in power distribution systems, especially in growing localities where the demand for power is increasing.
• Careful consideration of the transformer's KVA rating is crucial when catering to growing power demands.