An electric generator phase ring handling tool, a phase ring loading tool, base loader, and a system and a method for servicing or installing one or more phase rings in an electric generator using the handling tool, the loading tool and the base loader. Phase rings can be picked up and transported to a generator, inserted into the generator, adjusted while inside the generator, and removed. Installation, removal and servicing of the rings in a generator avoids use of a crane and allows shorten generator outage duration. Without using a crane for installation, removal and servicing, the safety of workers performing these operations is enhanced. Also, increased precision in transporting, placing, installing, removing, and adjusting the rings is obtained, minimizing the risk of damage to the rings and the generator.

A rotary electric machine has a rotor and a stator. The stator comprises a stator coil. The stator coil has a bus bar made of a conductive member that is electrically connected to a coil terminal included in a coil end. The stator has a holder which accommodates the bus bar and is made of an insulating member. The holder is positioned so that the opening or the resin member faces towards the stator core.

A rotating electric machine having high efficiency and high reliability without causing an increase in size and cost is realized. Each of the rectangular wire segment coils has a first region portion and a second region portion connected to the first region portion and formed in the circumferential direction. Adjacent pairs of wire coils include a conductive portion to which the first region portion of one of the rectangular wire segment coils and the second region portion of the other of the rectangular wire segment coils are connected. Each of the plurality of layers includes a first layer in which the first region portion appears at an axial end portion and a second layer in which the second region portion appears at an axial end portion when the coil end is viewed in an axial direction of the rotating electric machine.

An electric generator phase ring handling tool, a phase ring loading tool, base loader, and a system and a method for servicing or installing one or more phase rings in an electric generator using the handling tool, the loading tool and the base loader. Phase rings can be picked up and transported to a generator, inserted into the generator, adjusted while inside the generator, and removed. Installation, removal and servicing of the rings in a generator avoids use of a crane and allows shorten generator outage duration. Without using a crane for installation, removal and servicing, the safety of workers performing these operations is enhanced. Also, increased precision in transporting, placing, installing, removing, and adjusting the rings is obtained, minimizing the risk of damage to the rings and the generator.

An electric generator phase ring handling tool, a phase ring loading tool, base loader, and a system and a method for servicing or installing one or more phase rings in an electric generator using the handling tool, the loading tool and the base loader. Phase rings can be picked up and transported to a generator, inserted into the generator, adjusted while inside the generator, and removed. Installation, removal and servicing of the rings in a generator avoids use of a crane and allows shorten generator outage duration. Without using a crane for installation, removal and servicing, the safety of workers performing these operations is enhanced. Also, increased precision in transporting, placing, installing, removing, and adjusting the rings is obtained, minimizing the risk of damage to the rings and the generator.

A method for manufacturing a stator for a rotary electric machine including: a first disposing process of disposing one workpiece for stator in a first station (ST1); a first welding process of completing welding of a first part of stator coil in the one workpiece in ST1; a second disposing process of disposing an other one workpiece for stator in a second station (ST2); and a second welding process of completing welding of a second part of stator coil in other one workpiece in ST2, wherein first welding process includes first irradiation process of irradiating first part with a laser beam for welding, second welding process includes second irradiation process of irradiating second part with a laser beam for welding, first and second irradiation processes have a time difference, and laser beam used in each of the first and second irradiation processes are generated based on the same oscillator.

A method for manufacturing a stator for a rotary electric machine including: a first disposing process of disposing one workpiece for stator in a first station (ST1); a first welding process of completing welding of a first part of stator coil in the one workpiece in ST1; a second disposing process of disposing an other one workpiece for stator in a second station (ST2); and a second welding process of completing welding of a second part of stator coil in other one workpiece in ST2, wherein first welding process includes first irradiation process of irradiating first part with a laser beam for welding, second welding process includes second irradiation process of irradiating second part with a laser beam for welding, first and second irradiation processes have a time difference, and laser beam used in each of the first and second irradiation processes are generated based on the same oscillator.