{"schemaVersion":1,"slug":"transformer-fed-indicator-lamp","name":"Transformer-fed indicator lamp","kind":"symbol","abbreviation":"LAMP TX","aliases":["HLT1H23A","VLT1H23A"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A transformer-fed indicator lamp includes a documented internal voltage-conversion arrangement.","description":["A transformer-fed indicator lamp includes a documented internal voltage-conversion arrangement. Its supply terminals and lamp indication are shown according to the selected assembly."],"readingNotes":["Use the assembly input rating rather than the internal lamp voltage as the wiring supply requirement.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["State input voltage","Name indicated condition","Reference assembly terminals"],"distinction":"A built-in lamp transformer is different from a separately drawn panel control transformer.","facts":[{"label":"Drawing role","value":"Visual signal"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HLT1H23A, VLT1H23A (Autodesk identifiers; not IEC symbol numbers)"},{"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-transformer-lights","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["indicator-lamp","relay-coil"],"artwork":"edu-transformer-fed-indicator-lamp","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/transformer-fed-indicator-lamp","illustration":{"url":"https://eloragrid.ai/library/illustrations/transformer-fed-indicator-lamp.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-transformer-lights","title":"AutoCAD Electrical: Transformer-fed indicator lamps","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-CCA59550-27D3-4BC0-B576-617C8934EC2B.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."}]}