H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 15/00 (2006.01) H01R 43/14 (2006.01)
Patent
CA 2191933
The method for renewing sliprings of synchronous machines comprises the following method steps: a) Machining the sliprings on the shaft without remo- ving the sliprings from the shaft, for the purpose of producing a slipring bushing (8, 9), specifically to a radius which is preferably 30 to 40 mm smaller than the nominal radius of the slipring; b) Heating and subsequently shrinking the new sliprings (6, 7; 6a, 6b, 7a, 7b) consisting of a high- strength Cu-Ni-Be alloy, onto the shrink surfaces, prepared in accordance with step a), of the slipring bushings (8, 9) from the non-drive end (NS) of the machine; c) Skimming the slipring surfaces of the newly shrunk-on sliprings to the nominal radius (rN). This renders possible economic repair which, in addition, improves the service life and the electrical properties of the entire slipring arrangement.
Asea Brown Boveri Ag
Swabey Ogilvy Renault
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