Segment for the stator or the rotor of an electrical machine including a segment body circumferentially extending about a longitudinal axis of the stator segment or rotor segment between two circumferential ends (23a, 23b), the segment body including: - two end teeth (15a, 15b) at the two circumferential ends (23a, 23b) respectively, each end tooth having a first circumferential extension, - a plurality of N intermediate teeth protruding according to a radial direction orthogonal to the longitudinal axis from a yoke of the segment body to respective tooth radial ends, the plurality of intermediate teeth being circumferentially distributed between the two end teeth (15a, 15b), each of the plurality of N intermediate teeth having a second circumferential extension greater than the first circumferential extension, N being an integer greater than 1, - a plurality of N+1 slots circumferentially distributed between the two end teeth (15a, 15b), each pair of circumferentially adjacent intermediate teeth having a slot interposed therebetween, a slot being provided between each end tooth (15a, 15b) and a respective circumferentially adjacent intermediate tooth, wherein the segment includes: - a plurality of 2-pitch coils, the 2-pitch coils being in the number of N-1 and extending between an i-th slot and a (i+2)-th slot, the slots being progressively counted from one to the other of the two circumferential ends (23a, 23b), i being an integer between 1 and N-1, - a plurality of 1-pitch coils between two circumferentially adjacent slots of said plurality of N+1 slots, one said 1-pitch coil being adjacent to the first end tooth, a second 1-pitch coil being adjacent to the second end tooth - a fractional slot winding (30, 31) including said 2-pitch coils and, optionally, said 1-pitch coils, wherein each slot includes a bottom portion adjacent to the yoke and a top portion radially opposed to the bottom portion, the 2-pitch coils extending between a top portion of the i-th slot and a bottom portion of the (i+2)-th slot or between a bottom portion of the i-th slot and a top portion of the (i+2)-th slot. - two end teeth (15a, 15b) at the two circumferential ends (23a, 23b) respectively, each end tooth having a first circumferential extension, - a plurality of N intermediate teeth protruding according to a radial direction orthogonal to the longitudinal axis from a yoke of the segment body to respective tooth radial ends, the plurality of intermediate teeth being circumferentially distributed between the two end teeth (15a, 15b), each of the plurality of N intermediate teeth having a second circumferential extension greater than the first circumferential extension, N being an integer greater than 1, - a plurality of N+1 slots circumferentially distributed between the two end teeth (15a, 15b), each pair of circumferentially adjacent intermediate teeth having a slot interposed therebetween, a slot being provided between each end tooth (15a, 15b) and a respective circumferentially adjacent intermediate tooth, wherein the segment includes: - a plurality of 2-pitch coils, the 2-pitch coils being in the number of N-1 and extending between an i-th slot and a (i+2)-th slot, the slots being progressively counted from one to the other of the two circumferential ends (23a, 23b), i being an integer between 1 and N-1, - a plurality of 1-pitch coils between two circumferentially adjacent slots of said plurality of N+1 slots, one said 1-pitch coil being adjacent to the first end tooth, a second 1-pitch coil being adjacent to the second end tooth - a fractional slot winding (30, 31) including said 2-pitch coils and, optionally, said 1-pitch coils, - a plurality of 2-pitch coils, the 2-pitch coils being in the number of N-1 and extending between an i-th slot and a (i+2)-th slot, the slots being progressively counted from one to the other of the two circumferential ends (23a, 23b), i being an integer between 1 and N-1, - a plurality of 1-pitch coils between two circumferentially adjacent slots of said plurality of N+1 slots, one said 1-pitch coil being adjacent to the first end tooth, a second 1-pitch coil being adjacent to the second end tooth - a fractional slot winding (30, 31) including said 2-pitch coils and, optionally, said 1-pitch coils, wherein each slot includes a bottom portion adjacent to the yoke and a top portion radially opposed to the bottom portion, the 2-pitch coils extending between a top portion of the i-th slot and a bottom portion of the (i+2)-th slot or between a bottom portion of the i-th slot and a top portion of the (i+2)-th slot.