Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-08-30
2005-08-30
Mullins, Burton (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S179000, C310S180000, C310S195000, C174SDIG001, C174SDIG002, C290S00100C
Reexamination Certificate
active
06936947
ABSTRACT:
In a plant containing a turbo-generator the magnetic circuit of the turbo-generator is included in an electric generator which directly supplies a high supply voltage of 20-800 kV, preferably higher than 36 kV. The insulation of the generator is built up of a cable (6) comprising one or more current-carrying conductors (31) with a number of strands (36) surrounded by outer and inner semiconducting layers (34, 32) and intermediate insulating layers (33). The outer semiconducting layer (34) is at earth potential. The phases of the winding are Y-connected. The Y-point may be insulated and protected from over-voltage by means of surge arresters, or else the Y-point may be earthed via a suppression filter.
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Berggren Bertil
Berggren Sören
Carstensen Peter
Gertmar Lars
Hölleland Mons
ABB AB
Dykema Gossett PLLC
Mullins Burton
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