PCS
Power converter / inverter
An identified interface converting electrical power between documented circuit forms.
SLD / Schematic
IEC · Q020508
Bidirectional-energy-flow qualifier
This qualifier identifies an energy interface intended to operate in both directions.
IEC · Bidirectional-energy-flow qualifier
Autodesk IEC-60617 Symbol Preview — Energy-flow qualifiers; vendor family reference, not certified IEC geometry or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
SLD / Schematic · Q020508
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.
A distinction that matters
A bidirectional energy indication does not by itself certify grid-forming or islanding capability.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Energy-flow qualifiers
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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