# Bidirectional-energy-flow qualifier

Canonical URL: https://eloragrid.ai/symbols/iec-bidirectional-energy-flow-qualifier
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: Q020508
Drawing use: SLD, Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Bidirectional-energy-flow qualifier
Autodesk IEC-60617 Symbol Preview — Energy-flow qualifiers; vendor family reference, not certified IEC geometry or database identifier.

This qualifier identifies an energy interface intended to operate in both directions.

## What it represents

This qualifier identifies an energy interface intended to operate in both directions. Storage and conversion systems can exchange energy in opposite directions under different modes. A bidirectional qualifier describes that capability without defining when either direction is enabled.
Name the charge/discharge or import/export modes and their interfaces. The operating strategy and protective controls are documented separately from the energy-flow mark.

## How to read it

- State the supported operating modes and associated control conditions.
- A bidirectional energy indication does not by itself certify grid-forming or islanding capability.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- State the supported operating modes and associated control conditions.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

A bidirectional energy indication does not by itself certify grid-forming or islanding capability.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: Q020508 (Autodesk token; not a verified IEC database ID)
- Information added: State the supported operating modes and associated control conditions.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [Autodesk IEC-60617 preview: Energy-flow qualifiers](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-2039C5DD-1C01-4D77-AD97-584052C53D75.htm) — Autodesk. Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.

## 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.