Symbols · TX 1PH

Single-phase two-winding transformer

A single-phase two-winding transformer transfers energy between separate primary and secondary windings.

SLD / Schematic · TX 1PHSingle-phase two-winding transformer: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

A single-phase two-winding transformer transfers energy between separate primary and secondary windings. Voltage ratio, power rating, earthing and terminal polarity require annotations beyond a generic drawing outline.

How to read it

  • Identify winding connections before tracing the supplied control or auxiliary circuit.
  • The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.

Information to show or reference

  • State winding voltages
  • Identify terminal polarity
  • Reference rating and earthing

A distinction that matters

A two-winding transformer is different from an autotransformer with an electrically shared winding.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

Power, potential and autotransformer symbols

Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.

Autodesk · Public reference checked 13 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 13 October 2026

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