Power terminal structure for stator component of high-output turbo-generator

Claim 1

The combination with a high-output three-phase turbo-generator the housing of which is filled with a non-combustible and non-oxidizing gas at a pressure level slightly exceeding atmospheric and wherein the rotor conductors and the stator conductors are cooled by circulation of a liquid coolant, of a stator conductor terminal assembly for electrically leading out the phase windings from the coil heads, said conductor terminal assembly comprising a casing secured to the underside of and extending longitudinally of the generator housing, and communicating with the interior of said housing at hollow switching leads connected to the phase windings, a metallic plate located within said casing and extending longitudinally thereof, elastic means securing said metallic plate in place within said casing, a plate of insulating material likewise located within said casing and extending longitudinally thereof in parallel spaced relation with said metallic plate, three hollow terminal conductors insulated throughout their entire length against the full voltage of the stator windings, said conductors being connected respectively at one end thereof to corresponding switching leads and which extend from the latter in a first section directed vertically downward thence in a second section directed horizontally for different distances through the space between said metallic and insulating plates and thence in a third section directed vertically downward through elastic supports therefor secured to said insulating plate, means securing the horizontally extending second sections of said hollow conductors to said metallic plate, said third vertically downward extending sections of said hollow conductors ending in polygon-shaped connection terminals and being passed through openings provided in the bottom wall of said casing, and secured in place by means of gas-tight elastic support members attached to the wall of the casing, a fluid coolant duct located within said casing, and means connecting the interior of said hollow conductors with said fluid coolant duct.