This information is part of the Modelica Standard Library maintained by the Modelica Association.
This library contains components for modelling of multiphase electrical circuits. The number of phases m is not restricted to three. The connector (named plug) contains an array of m singlephase pins. Most of the components use an array of singlephase components from Modelica.Electrical.Analog.
For the orientation of an arbitrary number of phases m > 3, see the phase orientation concept.