Stator assembly having a phase-to-phase insulator, and a method of assembling a stator assembly

A stator assembly for an electric machine, the stator assembly comprising;

• a stator core extending along and concentric about a longitudinal axis;
• a plurality of coils supported by the stator core, disposed radially about and equidistant from the longitudinal axis and extending along the longitudinal axis;
• wherein each adjacent pair of the plurality of coils is spaced from each other and is configured for a different electrical phase;
• an insulator assembly defining a rigid form and including a non-conductive material, the insulator assembly including an annular ring attached to the stator core and a plurality of coil separators supported by the annular ring and extending from the annular ring axially along the longitudinal axis, with one of the plurality of coil separators disposed between each adjacent pair of the plurality of coils to prevent contact between adjacent coils having a different electrical phase;
• and
• an attachment mechanism for attaching the insulator assembly to the stator core, wherein the attachment mechanism aligns the insulator assembly concentrically about the longitudinal axis and positions each of the plurality of coil separators between one of the adjacent pairs of the plurality of coils;
• wherein the attachment mechanism includes at least one peg extending axially along the longitudinal axis from the stator core, and wherein the annular ring defines at least one aperture aligned with and in sliding engagement with the at least one peg, with the at least one peg extending through the at least one aperture.