# ANSI/IEEE Minimum active-power relay form Canonical URL: https://eloragrid.ai/symbols/ansi-minimum-active-power-relay Publisher: Elora Grid Updated: 2026-10-28 Lookup label: P LOW Drawing use: SLD, Schematic Reference families: IEEE / ANSI, Manufacturer ## Symbol convention Convention: IEEE / ANSI Form: Minimum Active Power Relay Autodesk IEEE Symbol Preview: Miscellaneous Relays, block HCR1F43. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier. Related representation: [Minimum active-power relay](https://eloragrid.ai/symbols/minimum-active-power-relay) IEEE-library form of minimum active-power relay: a minimum active-power relay operates according to a configured low active-power condition. ## In plain English ### What does ANSI/IEEE Minimum active-power relay form mean? This reference locates minimum active-power relay in Autodesk's IEEE-oriented miscellaneous relays family. A minimum active-power relay operates according to a configured low active-power condition. The measurement direction and enable logic determine what low power means in the control sequence. The public library uses HCR1F43 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 Identify the directional convention before evaluating the threshold. Minimum active power and reverse power are different operating criteria. 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 minimum active-power relay: a minimum active-power relay operates according to a configured low active-power condition. Minimum active power and reverse power are different operating criteria. ### 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: Miscellaneous Relays](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-DA549E3E-4ABB-426E-9331-0226EF55EAA7.htm) ## What it represents This reference locates minimum active-power relay in Autodesk's IEEE-oriented miscellaneous relays family. A minimum active-power relay operates according to a configured low active-power condition. The measurement direction and enable logic determine what low power means in the control sequence. The public library uses HCR1F43 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. Identify the directional convention before evaluating the threshold. Minimum active power and reverse power are different operating criteria. 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 - Identify the directional convention before evaluating the threshold. - 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 - Show voltage/current inputs - State power direction - Reference threshold and enabling logic ## Important distinction Minimum active power and reverse power are different operating criteria. ## Facts - Convention evidence: Autodesk IEEE Symbol Preview: Miscellaneous Relays; published form: Minimum Active Power Relay. - Public vendor block: HCR1F43. Vendor library token, not an IEEE symbol number. - Drawing role: Monitoring element - 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: Miscellaneous Relays](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-DA549E3E-4ABB-426E-9331-0226EF55EAA7.htm) — Autodesk. Public IEEE-oriented Miscellaneous Relays table explicitly lists HCR1F43 as Minimum Active Power Relay. 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.