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

MIS

Symbols

Microgrid interconnection switch

The microgrid interconnection switch is the breaker or switch at the boundary with the utility that opens to island the microgrid and closes to reconnect it. Its control is tied to interface protection, which detects loss of mains, and to the microgrid controller, which manages planned islanding and resynchronisation.

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

A distinction that matters

The interconnection switch defines the island boundary; a generator breaker connects only one source.

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.