Abstract: A coupling unit for two multilayer cables of a stator winding of a high-voltage generator, located in the end-face portion thereof, comprises terminations (1) of interconnected multilayer cables, wherein conducting layers (2,10) and conducting layer tubes (6,8) are concentrically arranged and separated from one another by insulating layers (7, 9, 14, 15), jumpers (18, 20, 22, 24) electrically coupling said conducting layers (2, 10) and conducting layer tubes (6, 8). A portion of each insulating layer (7, 9, 14, 15), facing the jumpers (18, 20, 22, 24) has a shape of an end insulation frustum (16). Each jumper (18, 20, 22, 24) is a totality of components made as a portion of a hollow cylinder limited by two planes. Each jumper (18, 20, 22, 24) carries an insulating bushing (12, 21, 23, 25). Thin-walled insulation cylinders (27, 28) are secured in each end insulation frustums (26) and in frustums (26) of the insulation bushings (19, 21, 23, 25).

Abstract: A coupling unit for connection of a generator high-voltage winding lead-out and a cable comprises a casing (1) wherein a generator high-voltage winding lead-out (5) with sheaths (6) and a cable termination (3) are arranged, their current carrying elements (8) being linked by a power jumper (9).

Abstract: A device for attachment of coil ends in a generator stator high-voltage winding includes insulation spacers (13) disposed on external surfaces of the coil end bars (16), auxiliary spacers disposed between coil end bars (16), a case (1), spring stops (15) anchored inside the case (1), and planks (14). The case (1) is made of two coaxial truncated-cone members (2 and 3) and a part of a torus member (4) made integral therewith and incorporating a joint (5) with a seal (6). Each plank (14) is arranged between two insulation spacers (13), and the insulation spacers (13) are arranged between the coil end bars (16) and the spring stops (15). The insulation spacers (13), the planks (14), the spring (15) and a side surface of the case (1) form cooling passages.

Abstract: The annular cavity in the stator of a cryogenic electric machine is defined by the housing and by the cylindrical element holding the winding. An electrically non-conducting ferromagnetic liquid is introduced into the annular cavity and is permitted to flow therein. The ferromagnetic liquid also serves as a cooling liquid for the cryogenic electric machine. A cooling system is connected to the annular cavity and together they form a closed loop for the circulation of the ferromagnetic liquid. Axial ribs are provided on the inner surface of the housing to prevent rotation of the ferromagnetic liquid as it flows inside the annular cavity.

Abstract: Disclosed is a rotor of a cryogenic electrical machine, comprising a superconducting field winding consisting of flat coils each of which is enclosed in a housing having therein tangential and axial passages, metal partitions disposed between the coils, an electrically insulating material, radial passages communicating the central cavity of the rotor with the tangential passages of the housing, and a bandage embracing the coils separated by said partitions, each housing being made up of a base embraced by the coil, wedges and inserts, radial passages being formed in the bases and wedges of the housings, and the electrically insulating material being made as strips forming passages communicating the radial passages of the bases and wedges.

Abstract: The electric machine comprises a rotor, a stator filled with a cooling fluid and separated from the rotor by a sealed jacket forming chambers of end-connectors of the stator winding. Within the stator there are provided ducts for the cooling fluid to flow therein, which connect said chambers. An external pipeline, at least part of which is disposed above the stator, forms an ascending and descending branches of the cooling fluid circulation system, each of the branches being communicated with one of said chambers. The upper section of the descending branch includes a cooler which is thus comprised in the whole system of the cooling fluid natural circulation which is effected due to the difference in specific weights of heated and cooled fluid.