Polyphase Transformer-Rated Application - Videos and Related Books


This 36-minute video examines transformer-rated installations and discusses where and why instrument transformers are used. Instrument transformer basics are reviewed, their polyphase connections are shown, and common polyphase transformer-rated installations are examined. Installation procedures are discussed, with close attention to transformer polarity markings. How to size, select, and verify in the field, correct CTs and VTs for a given job.

Training Sessions

Polyphase Transformer-Rated Metering – 10 minutes
Describes the functions of the two basic types of instrument transformers commonly used in metering. Identifies variables that affect the installation of current transformers and meters.

Delta Transformer-Rated Meter Installations – 9 minutes
Describes a typical three-phase, three-wire, delta transformer-rated meter installation. Describes a typical three-phase, four-wire, delta transformer-rated meter installation. Describes one way to determine the instrument transformer requirements for a given delta transformer-rated meter installation.

Wye Transformer-Rated Meter Installations – 7 minutes
Describes a typical three-phase, four-wire, wye transformer-rated meter installation. Shows one way to determine the transformer requirements for a typical wye transformer-rated meter installation.

Instrument Transformer Verification – 10 minutes
Describes problems that can develop with instrument transformers. Shows how some of the electrical properties of instrument transformers can be checked. Demonstrates how a meter on a polyphase installation can be checked to ensure proper registration.

Item Code: PPT
Polyphase Transformer-Rated Application - 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
Polyphase Transformer-Rated Application - DVD
Show this video in your classroom, or load it on your company server so all your workers can watch and benefit. More info

$ 145.00

Polyphase Transformer-Rated Application - 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 Transformer-Rated Application - Instructor Guide
Supplementary classroom exercises with quizzes for every session. Approximately 30 pages. More info

$ 15.00