Polyphase Transformer-Rated Application 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. Explains how to size, select, and verify in the field, correct CTs and VTs for a given job.
5-1/2" x 8-1/2" 26 pages By Alexander Publications