Transformer Connections 2 - Videos and Related Books
Summary
This 56-minute video explains how common types of overhead transformers can be connected together. Covers both single-phase and three-phase transformers, with emphasis on three-phase connections of three single-phase transformers. Presents connection theory using phasor diagrams and demonstrates how each of the connections is made. Covers how to make three-phase connections in the following configurations: delta-wye, wye-delta, alternative delta-delta, and alternative wye-delta. Also shows these connections using phasor diagrams. Explains how to connect transformers to form an open bank in delta-delta and wye-delta.
Training Sessions
Introduction – 7 minutes
Describes the basic requirements for connecting units together to form a three-phase bank. Explains connection principles and theory using phasor diagrams. Demonstrates and explains why delta-wye and wye-delta three-phase connections have angular displacements of 30 degrees.
Demonstrates and explains how a delta-wye three-phase connection produces 30 degrees of angular displacement, using subtractive-polarity transformers.
Wye-Delta Connections – 9 minutes
Demonstrates and explains how a three-phase wye-delta connection produces 30 degrees of angular displacement.
Alternative Connections – 12 minutes
Demonstrates and explains: phasor diagrams and angular displacement using alternative connections, how an alternative delta-delta three-phase connection producing 180 degrees of angular displacement can be made, and how an alternative wye-delta three-phase connection producing 210 degrees of angular displacement can be made.
Open Banks – 9 minutes
Demonstrates and explains: an open delta-delta connection producing 0 degrees of angular displacement and an open wye-delta three-phase connection producing 30 degrees of angular displacement.
Additional Three-Phase Connections – 9 minutes
Demonstrates and explains one example of a three-phase transformer.
Videos
Watch this video now. Subscribers can watch more than 200 T&D videos any time, as often as they wish. If you're an instructor, we'll set up a virtual classroom for you. Contact us. More info
Show this video in your classroom, or load it on your company server so all your workers can watch and benefit. More info
Books
This book reinforces learning from the video. It has informative text and color pictures throughout. Also a good resourse for learning on your own. A handy, compact book. Approximately 40 pages. More info
Supplementary classroom exercises with quizzes for every session. Approximately 30 pages. More info