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AssigneeSiemens Westinghouse Power Corporation
InventorsJoseph David Hurley, Peter Jon Clayton
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An apparatus to detect a breakdown in the insulation of a through-bolt in a laminated generator core is provided. The apparatus provides a ground detection circuit to generate and sense a signal in response to a ground that develops as a result of a breakdown in through-bolt insulation. Preferably, the circuit includes a signal source that generates a signal in response to insulation breakdown and a signal sensor to sense the signal so generated. The apparatus, moreover, can identify which among a plurality of through-bolts has experienced an insulation breakdown. Methods also are provided for detecting a breakdown in through-bolt insulation and identifying which among a plurality of through-bolts has experienced a breakdown in insulation.
An apparatus to detect a breakdown in through-bolt insulation at least partially surrounding at least one insulated through-bolt positioned within a power generator, the apparatus comprising:
An apparatus to detect a breakdown in through-bolt insulation at least partially surrounding at least one insulated through-bolt positioned within a generator core having a plurality of core laminations secured to each other by the at least one insulated through-bolt, the apparatus comprising:
A ground detector circuit adapted to detect a ground in a generator core resulting from a breakdown in through-bolt insulation at least partially surrounding at least one insulated through-bolt positioned within the generator core, the circuit comprising:
A method for detecting a breakdown in through-bolt insulation surrounding substantially the entire length of a through-bolt positioned within a generator core, the method comprising supplying a signal to the generator core and detecting the signal when a breakdown in through-bolt insulation occurs.
Dependencies are inferred from the claim text.