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

EQ SRC

Symbols

Grid equivalent source

A grid equivalent source represents the upstream network in load flow, short circuit and stability studies as an ideal voltage source behind an impedance. The impedance is calculated from the declared fault level and X/R ratio at the connection point, often with separate maximum and minimum cases.

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

A distinction that matters

A grid equivalent is a study model; a utility grid connection symbol represents the real supply on construction drawings.

Full reference

GRID

Symbols

Utility grid connection

The utility grid connection symbol represents the public supply network as seen from the installation. It is drawn at the top or edge of a single-line diagram to show where power enters, and in a microgrid it is one of several sources, typically the reference source when the microgrid is grid-connected.

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

A distinction that matters

A utility connection represents the external network; a grid equivalent source is a study model with defined impedance.

Full reference

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