# ANSI/IEEE compound-excited DC generator symbol Canonical URL: https://eloragrid.ai/symbols/ansi-compound-excited-dc-generator Publisher: Elora Grid Updated: 2026-10-28 Lookup label: G DC CMP Drawing use: Schematic Reference families: IEEE / ANSI, Manufacturer ## Symbol convention Convention: IEEE / ANSI Form: Autodesk IEEE-oriented DC Generator with Compound Excitation functional form Autodesk publishes this block under its IEEE Symbol Preview for generators. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted. Related representation: [Compound-excited DC generator](https://eloragrid.ai/symbols/compound-excited-dc-generator) IEEE-oriented library form of a DC generator with both series and shunt field windings, for drawing lookup. ## In plain English ### What does ANSI/IEEE compound-excited DC generator mean? A compound-excited DC generator combines a shunt field across the armature with a series field carrying load current. Depending on whether the series field aids or opposes the shunt field, terminal voltage can stay nearly flat, rise or fall with load. Such machines survive in legacy battery charging, traction and test installations. ### A simple example IEEE-style schematics draw the armature circle with brushes, the series field as a winding in the armature lead and the shunt field as a separate winding across the terminals. This entry is a convention-specific lookup based on a publisher's IEEE-labelled preview; the geometry here is independently drawn and is not a certified reproduction of the standard graphic. ### What the drawings help you do Identify whether the shunt field is connected across the armature only (short shunt) or across the series field as well (long shunt). The vendor block identifier is a library name, not a standard number. A compound generator has both series and shunt fields; a plain DC generator symbol does not specify the field arrangement. ### This particular reference IEEE-oriented library form of a DC generator with both series and shunt field windings, for drawing lookup. A compound generator has both series and shunt fields; a plain DC generator symbol does not specify the field arrangement. ### Terms - DC: Direct current: electricity flowing in one direction. - Winding: A coil of conductor inside an electrical machine or transformer. - 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 — Generators](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-6A9FA93B-3010-4274-AE51-20DB3520999C.htm) - [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/) ## What it represents A compound-excited DC generator combines a shunt field across the armature with a series field carrying load current. Depending on whether the series field aids or opposes the shunt field, terminal voltage can stay nearly flat, rise or fall with load. Such machines survive in legacy battery charging, traction and test installations. IEEE-style schematics draw the armature circle with brushes, the series field as a winding in the armature lead and the shunt field as a separate winding across the terminals. This entry is a convention-specific lookup based on a publisher's IEEE-labelled preview; the geometry here is independently drawn and is not a certified reproduction of the standard graphic. ## How to read it - Identify whether the shunt field is connected across the armature only (short shunt) or across the series field as well (long shunt). - The vendor block identifier is a library name, not a standard number. ## Information to show or reference - State field connection: short or long shunt, cumulative or differential. - Show field rheostat if fitted. - Cross-reference the IEC-style counterpart entry. ## Important distinction A compound generator has both series and shunt fields; a plain DC generator symbol does not specify the field arrangement. ## Facts - Convention evidence: Autodesk IEEE Symbol Preview, Generators - Public vendor block name: HPW1G10, VPW1G10 (Autodesk identifiers; not IEEE symbol numbers) - Field windings: Series and shunt - Artwork scope: Original functional illustration; exact standard glyph and compliance are not certified ## Public references - [Autodesk IEEE Symbol Preview — Generators](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-6A9FA93B-3010-4274-AE51-20DB3520999C.htm) — Autodesk. Public IEEE-oriented generator category page listing the compound-excitation DC generator block. - [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/) — IEEE Standards Association. Graphic-symbol standards context; not a source of reproduced artwork. ## 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.