# Wound-rotor induction motor

Canonical URL: https://eloragrid.ai/symbols/wound-rotor-induction-motor
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: M WR
Drawing use: SLD, Schematic
Reference families: IEC, Manufacturer

A wound-rotor induction motor includes a rotor winding arrangement with documented external connections.

## What it represents

A wound-rotor induction motor includes a rotor winding arrangement with documented external connections. The schematic must identify the rotor circuit and any connected starting or control equipment.

## How to read it

- Trace stator and rotor circuits as separate winding systems.
- 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 stator connections
- Identify rotor terminals
- Reference rotor starter/control circuit

## Important distinction

A wound-rotor motor has an accessible rotor circuit unlike an ordinary cage-rotor representation.

## Facts

- Drawing role: Rotating or linear load
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Public vendor block reference: HMO1M4, VMO1M4 (Autodesk identifiers; not IEC symbol numbers)
- 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.

## Public references

- [Three-phase motor symbol variants](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-385CBE83-33A3-4314-913E-3B59A6D05F22.htm) — Autodesk. Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source 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.