TX
Power transformer
Equipment transferring electrical power between winding circuits.
SLD / Schematic
Symbols · TX ADJ
Adjustable-ratio transformer
An adjustable-ratio transformer includes a documented means of varying its voltage ratio.
SLD / Schematic · TX ADJ
What it represents
An adjustable-ratio transformer includes a documented means of varying its voltage ratio. The functional drawing should identify the adjustment or tap connection without assuming on-load operation.
How to read it
- Establish whether changes are permitted energised or only under the manufacturer's off-circuit conditions.
- 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
- Record adjustment range
- Identify operating mechanism
- Reference tap-position notation
A distinction that matters
Adjustable ratio does not automatically imply an on-load tap changer.
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.
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.
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