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

MIRI

Symbols

Microgrid intentional-island request interface

Receives the authorized request to prepare the defined microgrid for separation from the utility. A microgrid operating-mode function coordinates how local sources and loads relate to the utility connection. The selected mode, the measured electrical condition and the actual switching configuration can differ during a transition.

Drawing use: Schematic
Application: Microgrid systems
Reference family: Manufacturer

A distinction that matters

A request is not proof of successful separation. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.

Full reference

MGC

Symbols

Microgrid controller

A microgrid controller coordinates the sources, storage and controllable loads within a microgrid. It sets operating points for inverters and gensets, maintains spinning reserve, sheds and restores load, and manages transitions between grid-connected and islanded operation, including black start and resynchronisation.

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

A distinction that matters

A microgrid controller supervises the whole system; a genset or inverter controller controls one device.

Full reference

Follow the full entry for source drawings and the appropriate standard or selected product. Equipment previews show a manufacturer drawing where available, otherwise a 3D thumbnail.