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Figure 15   Ganged Switch Symbology
Electrical Diagrams  and Schematics  Summary

Engineering Symbology Prints and Drawings Volume 1 of 2
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DOE-HDBK-1016/1-93 ELECTRICAL DIAGRAMS AND SCHEMATICS Electrical Diagrams and Schematics depicting  three-phase  systems,  a  small  symbol  may  be  placed  to  the  side  of  the  transformer primary and secondary to indicate the type of transformer windings that are used. Figure 16 (A) shows the most commonly used symbols to indicate how the phases are connected in three-phase windings.   Figure 16 (B) illustrates examples of how these symbols appear in a three-phase single line diagram. Figure 16   Three-Phase Symbols PR-03 Rev. 0 Page 16







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