Abstract: A hollow metal part is used as a pipe component for a refrigerant flow path of a rotating electrical machine adapted to cool a stator coil with a refrigerant. The rotating electrical machine includes a connection arm that couples the stator coil and a power supply terminal at a stator coil end portion of the stator coil, and an insulating hose that is coupled to the stator coil and the connection arm through a first hollow metal part in order to supply the refrigerant to the stator coil and the connection arm. The first hollow metal part is formed integrally by joining a part formed of stainless steel to a part made of oxygen-free copper.

Abstract: A rotating electrical machine includes: a rotor; a stator; a high voltage bushing; power lines connecting the stator coil to the bushing; a support insulator that supports the power lines; a rotating electrical machine outer casing that contains at least the rotor, the stator and a connection portion between the stator coil and the power lines, and is filled with hydrogen gas; and a terminal box which communicates with the outer casing and is attached to a lower portion of the outer casing, the insulator installed in the terminal box, and terminal box containing at least the power lines supported by the insulator and a part of the bushing connected to the supported power lines. The insulator is installed vertically on a bottom face of the terminal box, and the vertically installed insulator and a portion of the bushing in the terminal box are disposed in parallel with each other.

Abstract: A rotating electrical machine includes: a rotor; a stator; a high voltage bushing; power lines connecting the stator coil to the bushing; a support insulator that supports the power lines; a rotating electrical machine outer casing that contains at least the rotor, the stator and a connection portion between the stator coil and the power lines, and is filled with hydrogen gas; and a terminal box which communicates with the outer casing and is attached to a lower portion of the outer casing, the insulator installed in the terminal box, and terminal box containing at least the power lines supported by the insulator and a part of the bushing connected to the supported power lines. The insulator is installed vertically on a bottom face of the terminal box, and the vertically installed insulator and a portion of the bushing in the terminal box are disposed in parallel with each other.

Abstract: Rotating machinery includes a rotor of 2n poles, 84n slots, and three-phase stator windings, where n is an integer equal to or greater than 1. A top coil and a bottom coil accommodated at the diametrically inner and outer sides of the slot are connected to each other to form the stator winding. The stator windings have 2n phase belts per one phase, the phase belt including two parallel windings. In at least one of the phase belts, the one coils are disposed in the order of the second, first, first, second, first, second, first, second, second, first, second, first, second, and first parallel windings; the other coils connected to the one coils are disposed in the order of the first, second, second, first, second, first, second, first, second, first, first, second, first, and second parallel windings.

Abstract: A hollow metal part is used as a pipe component for a refrigerant flow path of a rotating electrical machine adapted to cool a stator coil with a refrigerant. The rotating electrical machine includes a connection arm that couples the stator coil and a power supply terminal at a stator coil end portion of the stator coil, and an insulating hose that is coupled to the stator coil and the connection arm through a first hollow metal part in order to supply the refrigerant to the stator coil and the connection arm. The first hollow metal part is formed integrally by joining a part formed of stainless steel to a part made of oxygen-free copper.

Abstract: Rotating machinery includes a rotor of 2n poles, 84n slots, and three-phase stator windings, where n is an integer equal to or greater than 1. A top coil and a bottom coil accommodated at the diametrically inner and outer sides of the slot are connected to each other to form the stator winding. The stator windings have 2n phase belts per one phase, the phase belt including two parallel windings. In at least one of the phase belts, the one coils are disposed in the order of the second, first, first, second, first, second, first, second, second, first, second, first, second, and first parallel windings; the other coils connected to the one coils are disposed in the order of the first, second, second, first, second, first, second, first, second, first, first, second, first, and second parallel windings.

Abstract: In an electrical machinery and apparatus, a storage space is formed along an extension direction of a strand, and a temperature sensor is installed in the storage space of the strand, so that temperature of the strand can be immediately measured, and no pressure is applied to the temperature sensor in the process of forming a ground wall insulation thereby the temperature of the strand can be accurately measured.

Abstract: In an electrical machinery and apparatus, a storage space is formed along an extension direction of a strand, and a temperature sensor is installed in the storage space of the strand, so that temperature of the strand can be immediately measured, and no pressure is applied to the temperature sensor in the process of forming a ground wall insulation thereby the temperature of the strand can be accurately measured.