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 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 metallic plate extending longitudinally of and below said turbo-generator housing, elastic supports securing said metallic plate to the underside of said turbo-generator housing, a pair of parallel spaced vertically arranged plates secured to the underside of said metallic plate, three tubular lead-off conductors insulated throughout their entire length against the full voltage of said stator windings, said lead-off conductors being connected respectively at one end to one end of the corresponding phase winding 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 pair of vertically arranged plates and thence in a third section directed vertically downward, individual shielding for the third section of each of said lead-off conductors in the form of a metallic box-like enclosure and through which said third section extends, a star-like arrangement of insulators in each box-like enclosure supporting said third section, a current transformer surrounding said third section within said box-like enclosure, the lower end of said third section extending outwardly through the bottom open end of said box-like enclosure and being connected to a terminal which is in turn connected to an outgoing phase line, and a tubular metallic shielding surrounding each of said phase lines.