{"schemaVersion":1,"slug":"ansi-three-phase-synchronous-motor","name":"ANSI/IEEE Three-phase synchronous motor form","kind":"symbol","abbreviation":"M 3PH SYNC","aliases":["HMO1M17","VMO1M17","IEEE 3 Phase Synchronous AC Motor","ANSI Three-phase synchronous motor"],"category":"power-distribution","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library form of three-phase synchronous motor: a synchronous motor operates with a documented synchronous relationship to the electrical supply.","description":["This reference locates three-phase synchronous motor in Autodesk's IEEE-oriented 3 phase motors family. A synchronous motor operates with a documented synchronous relationship to the electrical supply. Its excitation arrangement and starting/control system require device-specific information. The public library uses HMO1M17 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.","Identify any field or excitation supply separately from the main stator circuit. Synchronous operation is different from an induction motor's operating principle. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted."],"readingNotes":["Identify any field or excitation supply separately from the main stator circuit.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["State motor rating","Show excitation reference","Link starting and protection circuits"],"distinction":"Synchronous operation is different from an induction motor's operating principle.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: 3 Phase Motors; published form: 3 Phase Synchronous AC Motor."},{"label":"Public vendor block","value":"HMO1M17. Vendor library token, not an IEEE symbol number."},{"label":"Drawing role","value":"Rotating or linear load"},{"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."},{"label":"Artwork scope","value":"Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified."}],"references":[{"sourceId":"ansi-autodesk-392101fd-a88c-4bac-96cd-1c676094c262","relevance":"Public IEEE-oriented 3 Phase Motors table explicitly lists HMO1M17 as 3 Phase Synchronous AC Motor. This supports the vendor convention context, not reproduction of the publisher graphic."}],"related":["three-phase-synchronous-motor","motor","contactor"],"artwork":"s28-ansi-three-phase-synchronous-motor","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"3 Phase Synchronous AC Motor","reference":"Autodesk IEEE Symbol Preview: 3 Phase Motors, block HMO1M17. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.","counterpart":"three-phase-synchronous-motor"},"plainEnglish":{"title":"What does ANSI/IEEE Three-phase synchronous motor form mean?","introduction":"This reference locates three-phase synchronous motor in Autodesk's IEEE-oriented 3 phase motors family. A synchronous motor operates with a documented synchronous relationship to the electrical supply. Its excitation arrangement and starting/control system require device-specific information. The public library uses HMO1M17 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","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.","drawings":"Identify any field or excitation supply separately from the main stator circuit. Synchronous operation is different from an induction motor's operating principle. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.","terms":[{"name":"Winding","meaning":"A coil of conductor inside an electrical machine or transformer."},{"name":"Phase","meaning":"One of the related AC waveforms in a power system."},{"name":"Terminal","meaning":"An identified point where a conductor connects."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview — 3 Phase Motors","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-392101FD-A88C-4BAC-96CD-1C676094C262.htm"}],"detail":"IEEE-library form of three-phase synchronous motor: a synchronous motor operates with a documented synchronous relationship to the electrical supply. Synchronous operation is different from an induction motor's operating principle.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-three-phase-synchronous-motor","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-three-phase-synchronous-motor.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ansi-autodesk-392101fd-a88c-4bac-96cd-1c676094c262","title":"Autodesk IEEE Symbol Preview — 3 Phase Motors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-392101FD-A88C-4BAC-96CD-1C676094C262.htm","type":"cad-reference","scope":"Verified public IEEE-oriented vendor catalogue. Block names identify vendor symbols, not IEEE standard symbol numbers. Linked only; graphics and CAD files are not redistributed. IEEE/ANSI 315-1975 is a historical graphics reference with Inactive-Reserved status; this page does not certify current standards compliance.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public IEEE-oriented 3 Phase Motors table explicitly lists HMO1M17 as 3 Phase Synchronous AC Motor. This supports the vendor convention context, not reproduction of the publisher graphic."}]}