# ANSI/IEEE High-speed relay form Canonical URL: https://eloragrid.ai/symbols/ansi-high-speed-relay Publisher: Elora Grid Updated: 2026-10-28 Lookup label: K FAST Drawing use: Schematic Reference families: IEEE / ANSI, Manufacturer ## Symbol convention Convention: IEEE / ANSI Form: High Speed Autodesk IEEE Symbol Preview: Relays and Contacts, block HCR1HSP. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier. Related representation: [High-speed relay](https://eloragrid.ai/symbols/high-speed-relay) IEEE-library form of high-speed relay: a high-speed relay has a documented operating response intended for duties where relay timing matters. ## In plain English ### What does ANSI/IEEE High-speed relay form mean? This reference locates high-speed relay in Autodesk's IEEE-oriented relays and contacts family. A high-speed relay has a documented operating response intended for duties where relay timing matters. Schematics need the specific model and circuit role rather than an unqualified speed claim. The public library uses HCR1HSP for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number. ### A simple example Trace the measured quantity or initiating control signal separately from the output contacts. The device tag links the sensing or operating element to the controlled circuit; settings, reset behaviour and the actual terminal arrangement belong in the selected equipment documentation. ### What the drawings help you do Read operate and release times under the specified coil and contact conditions. High-speed classification does not imply a complete protection scheme's total clearing time. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted. ### This particular reference IEEE-library form of high-speed relay: a high-speed relay has a documented operating response intended for duties where relay timing matters. High-speed classification does not imply a complete protection scheme's total clearing time. ### Terms - Normally open / normally closed: The contact state in the normal condition defined for the drawing. - Coil: A wound conductor that can produce a magnetic field when energised. - Terminal: An identified point where a conductor connects. Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram. - [Autodesk IEEE Symbol Preview — Relays and Contacts](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F8EAC387-53CF-45FE-BE6A-C0C8FB3C1B22.htm) ## What it represents This reference locates high-speed relay in Autodesk's IEEE-oriented relays and contacts family. A high-speed relay has a documented operating response intended for duties where relay timing matters. Schematics need the specific model and circuit role rather than an unqualified speed claim. The public library uses HCR1HSP for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number. Trace the measured quantity or initiating control signal separately from the output contacts. The device tag links the sensing or operating element to the controlled circuit; settings, reset behaviour and the actual terminal arrangement belong in the selected equipment documentation. Read operate and release times under the specified coil and contact conditions. High-speed classification does not imply a complete protection scheme's total clearing time. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted. ## How to read it - Read operate and release times under the specified coil and contact conditions. - The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation. ## Information to show or reference - Name relay model - Reference operate and release data - Show controlled circuit ## Important distinction High-speed classification does not imply a complete protection scheme's total clearing time. ## Facts - Convention evidence: Autodesk IEEE Symbol Preview: Relays and Contacts; published form: High Speed. - Public vendor block: HCR1HSP. Vendor library token, not an IEEE symbol number. - Drawing role: Relay operation - Identifier status: 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. - Artwork scope: Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified. ## Public references - [Autodesk IEEE Symbol Preview — Relays and Contacts](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F8EAC387-53CF-45FE-BE6A-C0C8FB3C1B22.htm) — Autodesk. Public IEEE-oriented Relays and Contacts table explicitly lists HCR1HSP as High Speed. This supports the vendor convention context, not reproduction of the publisher graphic. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.