{"schemaVersion":1,"slug":"adjustable-core-inductor","name":"Adjustable-core inductor","kind":"symbol","abbreviation":"L ADJ","aliases":["HRT1L4","VRT1L4"],"category":"power-distribution","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"An adjustable-core inductor varies its documented inductive characteristic through a magnetic adjustment.","description":["An adjustable-core inductor varies its documented inductive characteristic through a magnetic adjustment. Its permissible range and adjustment method require equipment information."],"readingNotes":["Separate the adjustment mechanism from the electrical winding terminals.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["State adjustment range","Show winding connections","Reference adjustment instructions"],"distinction":"Adjustable inductance is not an on/off switching function.","facts":[{"label":"Drawing role","value":"Inductive component"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HRT1L4, VRT1L4 (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-reactors","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","capacitor"],"artwork":"edu-adjustable-core-inductor","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/adjustable-core-inductor","illustration":{"url":"https://eloragrid.ai/library/illustrations/adjustable-core-inductor.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-reactors","title":"AutoCAD Electrical: Reactors and inductors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-BAD50DBF-0951-44A0-BB4C-A57B4A4ED895.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."}]}