Abstract: The present disclosure relates to a slip ring arrangement for an electric machine to transfer current from a current source to a rotor of an electric machine. It is an object of the invention to provide a slip ring arrangement for an electric machine which guarantees appropriate cooling properties and mechanical stability. Disclosed is a slip ring arrangement for an electric machine with a slip ring composed of a cylindrical body, an end section and a shrink seat, whereas in the cylindrical body radial openings are formed, the shrink seat is shrinkable on a shaft, the shaft has a reduced diameter under the cylindrical body in order to form a sloped annular air gap beneath the cylindrical body to direct cooling medium through the radial openings.

Abstract: A tool for assembly of an inner enclosure of a generator or a machine comprises a first part and a second part. The first part comprises a plate with one edge constructed to form a first half-ring. The second part comprises a second half-ring corresponding to the first half-ring of the first part. Upon assembly of the first part and the second part, the first half-ring and the second half-ring form a full-ring to encompass a shaft of the generator or the machine and to connect to an inner enclosure of the generator or the machine.

Abstract: The method for extraction or introduction of a rotor (4) from or into a stator (2) of an electric machine (1) includes removing the fan blades (20) from the seats (19) of the rotor shaft (26), connecting a first guide (16) into the seats (19) of the removed fan blades (20), connecting a second guide (23) to the stator or to an element fixed to the stator (2), extracting or inserting the rotor (4) by sliding the first guide (16) on the second guide (23).

Abstract: The arrangement of an electric machine, a connecting system and a converter, includes the connecting system connected between the electric machine and the converter. The connecting system has an enclosure that houses non-shielded conductors each non-shielded conductor is connected between a phase of the electric machine and the inner side of the converter. The non-shielded conductors of the connecting system that are connected to an operating phase of the electric machine are adjacent to conductors of the connecting system that are not connected to operating phases of the electric machine.

Abstract: The present disclosure relates to the technical field of tools for generators or machines and to methods for assembling parts to electrical generators or machines by means of tools. Objects of the invention are to ensure an easy, safe, and time-consuming assembly of an inner enclosure to a generator or a machine. The objects are solved by a tool for the assembly of an inner enclosure of a generator or a machine, whereby the tool comprises a first part and a second part, the first part comprises a plate which comprises at one side a half-ring, the second part comprises a half-ring corresponding to the half-ring of the first part to be assembled to a full-ring to encompass the shaft of the generator or the machine and be fixed to the inner enclosure in maintenance operation.

Abstract: The electric machine has a stator with windings connected to phase connections. An insulating cap protects the reciprocally connected portions of the phase connections and windings. The insulating cap has a box-shaped body with an opening for the introduction of a winding within it. The body defines a seat housing the phase connection. The seat is formed in one piece with the body.

Abstract: A press plate (5) for tightening the metal sheets (2) of a stator core of an electric machine has an annular element (16) with a plurality of holes (17) provided at a side wall (11) thereof. The holes (17) have an elongated recessed top portion (20) and a cylindrical recessed bottom portion (21) extending from the ceiling (22) of the elongated recessed top portion (20).

Abstract: A supporting basket for an end winding of a stator winding of an electrical machine, the supporting basket including: at least one supporting ring; a plurality of supporting brackets arranged circumferentially distributed along the at least one supporting ring and attached to the at least one supporting ring; and a plurality of round connectors arranged radially externally on the supporting brackets, the round connectors extending circumferentially and being attached to the supporting brackets; wherein the supporting brackets, the at least one supporting ring, and the round connectors comprise an impregnation formed by dip-impregnation as a preassembled unit.

Abstract: The arrangement of an electric machine, a connecting system and a converter, includes the connecting system connected between the electric machine and the converter. The connecting system has an enclosure that houses non-shielded conductors each non-shielded conductor is connected between a phase of the electric machine and the inner side of the converter. The non-shielded conductors of the connecting system that are connected to an operating phase of the electric machine are adjacent to conductors of the connecting system that are not connected to operating phases of the electric machine.

Abstract: The electrical connection of a sealed electrical machine is provided and includes a casing containing lead conductors each connected to a bushing via an electrical connector. The casing has at least an inlet and an outlet for a cooling fluid. The electrical connector includes at least a permeable element defining a chamber such that during operation the cooling fluid, passing through the chamber and the permeable element, cools the permeable element. A method is also provided for cooling an electrical connection.

Abstract: The method for extraction or introduction of a rotor (4) from or into a stator (2) of an electric machine (1) includes removing the fan blades (20) from the seats (19) of the rotor shaft (26), connecting a first guide (16) into the seats (19) of the removed fan blades (20), connecting a second guide (23) to the stator or to an element fixed to the stator (2), extracting or inserting the rotor (4) by sliding the first guide (16) on the second guide (23).

Abstract: An end winding is described for a stator of an electrical machine. The end winding includes at least two round connectors via which the current is passed out from the winding bars of the stator, as well as a plurality of supporting brackets, via which the end winding is attached to the stator. The end winding has at least two round connectors having a radial section at whose end a phase connection block is in each case arranged. At least two phase connection blocks of one phase are arranged alongside one another in the circumferential direction. The adjacent phase connection blocks are connected via at least one pin element and is mounted at least partially integrally in recesses in the mutually facing side surfaces of the phase connection blocks. A method for fitting an end winding such as this is also described.

Abstract: The electric machine has a stator with windings connected to phase connections. An insulating cap protects the reciprocally connected portions of the phase connections and windings. The insulating cap has a box-shaped body with an opening for the introduction of a winding within it. The body defines a seat housing the phase connection. The seat is formed in one piece with the body.

Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.

Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.

Abstract: A press plate (5) for tightening the metal sheets (2) of a stator core of an electric machine has an annular element (16) with a plurality of holes (17) provided at a side wall (11) thereof. The holes (17) have an elongated recessed top portion (20) and a cylindrical recessed bottom portion (21) extending from the ceiling (22) of the elongated recessed top portion (20).

Abstract: The electrical connection of a sealed electrical machine is provided and includes a casing containing lead conductors each connected to a bushing via an electrical connector. The casing has at least an inlet and an outlet for a cooling fluid. The electrical connector includes at least a permeable element defining a chamber such that during operation the cooling fluid, passing through the chamber and the permeable element, cools the permeable element. A method is also provided for cooling an electrical connection.

Abstract: An end winding is described for a stator of an electrical machine. The end winding includes at least two round connectors via which the current is passed out from the winding bars of the stator, as well as a plurality of supporting brackets, via which the end winding is attached to the stator. The end winding has at least two round connectors having a radial section at whose end a phase connection block is in each case arranged. At least two phase connection blocks of one phase are arranged alongside one another in the circumferential direction. The adjacent phase connection blocks are connected via at least one pin element and is mounted at least partially integrally in recesses in the mutually facing side surfaces of the phase connection blocks. A method for fitting an end winding such as this is also described.

Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.

Abstract: A nut locking system made from non-metallic components, so as to be suitable for use in a high voltage generator that can easily be fitted and changed, includes a threaded shaft (10) and a nut (20) having at least one flat face (14) extending along the shaft (10), at least one slot (22) extending through the top surface of the nut (26), and a fastening device (30) for locking the nut (20) so as to prevent the rotational movement of the nut (20). The slots (22) and the faces (14) are such that when the nut (20) is threaded onto the shaft (10), at least one face (14) is alignable with at least one slot (22) so as to enable the fitting of a fastening device (30) through at least one of the slots (22), thereby locking the nut.