{"schemaVersion":1,"slug":"delta-winding-connection","name":"Delta winding connection","kind":"symbol","abbreviation":"DELTA","aliases":[],"category":"power-distribution","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A delta winding connects three phase windings in a closed loop.","description":["A delta winding connects three phase windings in a closed loop. This connection modifier describes topology within a transformer or machine representation and needs matching terminal labels."],"readingNotes":["Follow all three winding-to-winding connections before interpreting external line terminals.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Label line terminals","State winding voltage","Reference complete machine or transformer connection"],"distinction":"A delta connection has no inherent star neutral point.","facts":[{"label":"Drawing role","value":"Three-phase winding"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Identifier status","value":"The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name."}],"references":[{"sourceId":"pub-symbol-windings","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["power-transformer","generator"],"artwork":"edu-delta-winding-connection","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/delta-winding-connection","illustration":{"url":"https://eloragrid.ai/library/illustrations/delta-winding-connection.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-symbol-windings","title":"AutoCAD Electrical: Winding arrangements and AC/DC indications","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-3F5A759D-872A-4990-8AAE-7CCAFBBBD4C5.htm","type":"cad-reference","scope":"Public vendor catalogue naming and functional variants. Vendor block names are not IEC identifiers. Linked for reference; no graphics or CAD files are redistributed.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}]}