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

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

PCC

Symbols

Point of common coupling

The point of common coupling is the location on the network nearest to the installation where other customers are, or could be, connected. Harmonic, flicker and voltage limits in connection agreements are assessed at this point, and microgrid islanding decisions are often defined relative to it.

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

A distinction that matters

A PCC marks an assessment point; a utility grid connection symbol represents the supply itself.

Full reference

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