TX Y-D
Star-delta transformer
A star-delta transformer connects one winding set in star and the other in delta.
SLD / Schematic
IEEE / ANSI · TX Y-D
ANSI/IEEE Star-delta transformer form
IEEE-library form of star-delta transformer: a star-delta transformer connects one winding set in star and the other in delta.
In plain English
What does ANSI/IEEE Star-delta transformer form mean?
This reference locates star-delta transformer in Autodesk's IEEE-oriented 3 phase transformers family. A star-delta transformer connects one winding set in star and the other in delta. The notation identifies winding circuit arrangement; a clock-number or equivalent phase-displacement designation is still needed where system phase relationships matter. The public library uses HXF1P3SD for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Trace each winding, supply and accessible neutral through the complete machine or transformer connection diagram. Keep the phase arrangement, terminal labels and any clock notation attached to the device; neither the convention label nor this educational outline supplies its ratings.
What the drawings help you do
Read which side is star from the declared primary and secondary labels. Y-D circuit arrangement alone does not specify a complete transformer vector group. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
This particular reference
IEEE-library form of star-delta transformer: a star-delta transformer connects one winding set in star and the other in delta. Y-D circuit arrangement alone does not specify a complete transformer vector group.
- Winding
- A coil of conductor inside an electrical machine or transformer.
- Phase
- One of the related AC waveforms in a power system.
- Terminal
- An identified point where a conductor connects.
Read the source: Autodesk IEEE Symbol Preview: 3 Phase Transformers
IEEE / ANSI · 3 Phase Star/Delta
Autodesk IEEE Symbol Preview: 3 Phase Transformers, block HXF1P3SD. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
SLD / Schematic · TX Y-D
What it represents
This reference locates star-delta transformer in Autodesk's IEEE-oriented 3 phase transformers family. A star-delta transformer connects one winding set in star and the other in delta. The notation identifies winding topology; a clock-number or equivalent phase-displacement designation is still needed where system phase relationships matter. The public library uses HXF1P3SD for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Trace each winding, supply and accessible neutral through the complete machine or transformer connection diagram. Keep the phase arrangement, terminal labels and any clock notation attached to the device; neither the convention label nor this educational outline supplies its ratings.
Read which side is star from the declared primary and secondary labels. Y-D topology alone does not specify a complete transformer vector group. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
How to read it
- Read which side is star from the declared primary and secondary labels.
- 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
- Identify winding sides
- State complete vector group
- Show neutral availability
A distinction that matters
Y-D topology alone does not specify a complete transformer vector group.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEEE Symbol Preview: 3 Phase Transformers
Public IEEE-oriented 3 Phase Transformers table explicitly lists HXF1P3SD as 3 Phase Star/Delta. This supports the vendor convention context, not reproduction of the publisher 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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