{"schemaVersion":1,"slug":"ansi-combined-line-and-phase-voltmeter-selector","name":"ANSI/IEEE Combined line and phase voltmeter selector form","kind":"symbol","abbreviation":"HSW1S92","aliases":["HSW1S92","VSW1S92","IEEE 3 Voltage Phase-to-Phase and Phase-to-Neutral Switch","ANSI Combined line and phase voltmeter selector"],"category":"measurement-protection","drawingTypes":["Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library form of combined line and phase voltmeter selector: this representation identifies a selector covering phase-to-phase and phase-to-neutral voltage measurements.","description":["This reference locates combined line and phase voltmeter selector in Autodesk's IEEE-oriented miscellaneous switches family. This representation identifies a selector covering phase-to-phase and phase-to-neutral voltage measurements. One selector covers both line-to-line and line-to-neutral measurements. The measurement function changes with position even though the meter and its physical terminals remain the same. The public library uses HSW1S92 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.","List the selected conductor pair or phase/reference path for every position. Use the selected switch’s contact programme instead of inferring connections from the face labels alone. Provide a position table specifying each measurement path. The symbol cannot replace the actual switch contact programme. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted."],"readingNotes":["Provide a position table specifying each measurement path.","The symbol cannot replace the actual switch contact programme."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","Provide a position table specifying each measurement path.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"The symbol cannot replace the actual switch contact programme.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: Miscellaneous Switches; published form: 3 Voltage Phase-to-Phase and Phase-to-Neutral Switch."},{"label":"Public vendor block","value":"HSW1S92. Vendor library token, not an IEEE symbol number."},{"label":"Information added","value":"Provide a position table specifying each measurement path."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"},{"label":"Artwork scope","value":"Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified."}],"references":[{"sourceId":"ansi-autodesk-278f6c21-b1a6-4ea1-a535-e78d53bbd10d","relevance":"Public IEEE-oriented Miscellaneous Switches table explicitly lists HSW1S92 as 3 Voltage Phase-to-Phase and Phase-to-Neutral Switch. This supports the vendor convention context, not reproduction of the publisher graphic."}],"related":["iec-combined-line-and-phase-voltmeter-selector","current-transformer","voltage-transformer"],"artwork":"s28-ansi-combined-line-and-phase-voltmeter-selector","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"3 Voltage Phase-to-Phase and Phase-to-Neutral Switch","reference":"Autodesk IEEE Symbol Preview: Miscellaneous Switches, block HSW1S92. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.","counterpart":"iec-combined-line-and-phase-voltmeter-selector"},"plainEnglish":{"title":"What does ANSI/IEEE Combined line and phase voltmeter selector form mean?","introduction":"This reference locates combined line and phase voltmeter selector in Autodesk's IEEE-oriented miscellaneous switches family. This representation identifies a selector covering phase-to-phase and phase-to-neutral voltage measurements. One selector covers both line-to-line and line-to-neutral measurements. The measurement function changes with position even though the meter and its physical terminals remain the same. The public library uses HSW1S92 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","example":"Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.","drawings":"List the selected conductor pair or phase/reference path for every position. Use the selected switch’s contact programme instead of inferring connections from the face labels alone. Provide a position table specifying each measurement path. The symbol cannot replace the actual switch contact programme. 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":"Normally open / normally closed","meaning":"The contact state in the normal condition defined for the drawing."},{"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 — Miscellaneous Switches","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-278F6C21-B1A6-4EA1-A535-E78D53BBD10D.htm"}],"detail":"IEEE-library form of combined line and phase voltmeter selector: this representation identifies a selector covering phase-to-phase and phase-to-neutral voltage measurements. The symbol cannot replace the actual switch contact programme.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-combined-line-and-phase-voltmeter-selector","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-combined-line-and-phase-voltmeter-selector.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-278f6c21-b1a6-4ea1-a535-e78d53bbd10d","title":"Autodesk IEEE Symbol Preview — Miscellaneous Switches","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-278F6C21-B1A6-4EA1-A535-E78D53BBD10D.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 Miscellaneous Switches table explicitly lists HSW1S92 as 3 Voltage Phase-to-Phase and Phase-to-Neutral Switch. This supports the vendor convention context, not reproduction of the publisher graphic."}]}