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

Q020204

IEC

Alternating-current supply qualifier

An alternating-current qualifier identifies the supply character of a represented circuit.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / Manufacturer
Form evidence: Alternating-current supply qualifier. Autodesk IEC-60617 Symbol Preview — Winding connection and supply-character qualifiers; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

An AC qualifier alone does not identify the number of phases.

Full reference

Symbols

Three-phase motor

A motor representation identifies an electrical machine operating as a load in the stated system arrangement. Connection count, motor type and additional winding or rotor detail can change the representation. Its nameplate and equipment schedule provide the selected machine data.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / IEEE / ANSI

A distinction that matters

A contactor switches the motor circuit. Motor protection and short-circuit interruption may be provided by additional specified equipment.

Full reference

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