ID 11
Name multifunction device
Description A device that performs three or more comparatively important functions that could only be designated by combining several device function numbers. All of the functions performed by device 11 shall be defined in the drawing legend, device function definition list or relay setting record. See Annex B for further discussion and examples.
Notes If only two relatively important functions are performed by the device, it is preferred that both function numbers be used, as described in 3.6.