the winding comprises at least two poles and at least one phase , with which the poles are wound . the phase comprises at least two parallel - wired winding branches . at least two of the winding branches are different from each other in the winding of at least one of the poles . at least one pole is wound from at least two winding branches . at least one of the winding branches is included in the winding of at least two poles . the poles are wound with the winding branches in the sense of an essentially symmetrical current loading of the phase .