Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

Q070103

IEC

Isolation-function qualifier

An isolation qualifier identifies the documented disconnector function attached to a switching representation. Isolation is a device function that must be distinguished from the ability to interrupt load current or clear faults. A switching representation can therefore carry an isolation qualifier alongside other functional information.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / Manufacturer
Form evidence: Isolation-function qualifier. Autodesk IEC-60617 Symbol Preview — Operating-device and function qualifiers; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

The qualifier does not give isolation clearances or an equipment rating.

Full reference

PCS

Symbols

Power converter / inverter

A power converter changes electrical power between the circuit forms specified for its application. In a battery energy storage system, a power conversion system commonly provides the interface between DC storage and an AC system. Direction of power flow and operating capabilities are product-specific.

Drawing use: SLD / Schematic
Application: Microgrid systems
Reference family: IEC / IEEE / ANSI

A distinction that matters

Inverter, converter and PCS can denote different equipment boundaries. Define what is included in the represented assembly.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.