STATOR OF ROTARY ELECTRICAL MACHINE

PROBLEM TO BE SOLVED: To provide a stator of a rotary electrical machine, capable of reducing a maximum potential difference between conductor segments composing a coil.SOLUTION: A stator coil is formed by inserting a plurality of conductor segments from one side in an axial direction of a stator core 120 to the other side so that the plurality of conductor segments are arranged along a radial direction of two slots 160 arranged in a unit coil interval, offsetting and folding leg parts of the conductor segments projected from an end surface of the other side in the axial direction and mutually connecting the leg parts of the conductor segments in unit coils adjacent to each other in the radial direction. An element wire of a winding start conductor segment 1 and an element wire of a winding end conductor segment 24 are arranged in the same slot S1. An element wire of another conductor segment 2 is arranged between the element wire of the winding start conductor segment 1 and the element wire of the winding end conductor segment 24.