# Polyphase Systems 2 - Videos and Related Books

##### Summary

This 31-minute video discusses when and where various meters should be used. Blondel's theorem is introduced and used to show how a polyphase system is accurately metered. Explains how balanced and unbalanced polyphase systems are metered.

##### Training Sessions

Metering Polyphase Systems – 10 minutes
States the characteristics of delta systems and wye systems. States Blondel's theorem and describes how it can be applied to meter a three-phase, four-wire wye system, and to a three-phase, three-wire delta system.

Polyphase Meters – 10 minutes
Describes the features of a three-phase, three-wire socket-type meter, and describes how it can be connected to meter a three-phase, three-wire delta system. Describes the features of a three-element meter, and describes how a three-element socket-type meter can be connected to meter a three-phase four-wire wye system.

Balanced and Unbalanced Loads – 11 minutes
Defines balanced load and unbalanced load. Describes how a balanced load and an unbalanced load on a polyphase system can be accurately metered.

Item Code: PP2
##### Videos
Polyphase Systems 2 - Instant Video
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
##### Books
Polyphase Systems 2 - Study Guide
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

### \$ 15.00

Polyphase Systems 2 - Instructor Guide
Supplementary classroom exercises with quizzes for every session. Approximately 30 pages. More info