The Harris Institute of Technical Training has published a “Distribution Transformer Connections Training Manual and Field Reference Guide.” This book offers instruction on how to understand transformer nameplates, and learn about primary and secondary coils and bushings. It covers transformer polarity, losses, kilovolt-amps, and the taps and turns ratio. Users can learn about primary sources, systems and lines, and discover information about three-phase banks. The manual also helps technicians and linemen to determine how transformer banks are connected and how to tell the difference between wye and delta. Quick-reference flow charts keep this information at field professionals' fingertips.

Harris Institute of Technical Training | www.metergod.com