A rotary electric machine comprising: a stator structured such that a stator coil is incorporated in a stator iron core; a rotor arranged so as to oppose said stator and structured such that a rotor coil is incorporated in a rotor iron core; said stator and said rotor being stored within a stator frame, wherein the rotary electric machine further comprises: an acoustic absorbent which is disposed on an outer surface of the stator frame; a plurality of noise insulation plates which are disposed in a divided manner on an outer surface of the acoustic absorbent; an L-shaped section noise insulation plate attaching seat which is fixed to the stator frame and extends along edge parts of a side surface portion in the stator frame at the edge parts thereof; and a T-shaped section noise insulation plate attaching seat which is fixed to the stator frame and extends in an axial direction from a center part of the side surface portion in the stator frame, wherein said noise insulation plates disposed in a divided manner are fixed to said L-shaped section noise insulation plate attaching seat and said T-shaped section noise insulation plate attaching seat by using fastening means (5, 7), and wherein elastic bodies are installed between said noise insulation plates and said L-shaped section and T-shaped section noise insulation plate attaching seats (3, 3A), and are installed between said noise insulation plates and said fastening means (5, 7). a stator structured such that a stator coil is incorporated in a stator iron core; a rotor arranged so as to oppose said stator and structured such that a rotor coil is incorporated in a rotor iron core; said stator and said rotor being stored within a stator frame, wherein the rotary electric machine further comprises: an acoustic absorbent which is disposed on an outer surface of the stator frame; a plurality of noise insulation plates which are disposed in a divided manner on an outer surface of the acoustic absorbent; an L-shaped section noise insulation plate attaching seat which is fixed to the stator frame and extends along edge parts of a side surface portion in the stator frame at the edge parts thereof; and a T-shaped section noise insulation plate attaching seat which is fixed to the stator frame and extends in an axial direction from a center part of the side surface portion in the stator frame, wherein said noise insulation plates disposed in a divided manner are fixed to said L-shaped section noise insulation plate attaching seat and said T-shaped section noise insulation plate attaching seat by using fastening means (5, 7), and wherein elastic bodies are installed between said noise insulation plates and said L-shaped section and T-shaped section noise insulation plate attaching seats (3, 3A), and are installed between said noise insulation plates and said fastening means (5, 7). an acoustic absorbent which is disposed on an outer surface of the stator frame; a plurality of noise insulation plates which are disposed in a divided manner on an outer surface of the acoustic absorbent; an L-shaped section noise insulation plate attaching seat which is fixed to the stator frame and extends along edge parts of a side surface portion in the stator frame at the edge parts thereof; and a T-shaped section noise insulation plate attaching seat which is fixed to the stator frame and extends in an axial direction from a center part of the side surface portion in the stator frame, wherein said noise insulation plates disposed in a divided manner are fixed to said L-shaped section noise insulation plate attaching seat and said T-shaped section noise insulation plate attaching seat by using fastening means (5, 7), and wherein elastic bodies are installed between said noise insulation plates and said L-shaped section and T-shaped section noise insulation plate attaching seats (3, 3A), and are installed between said noise insulation plates and said fastening means (5, 7).