Helwig, A. (1995) History and development of non-intrusive electrical testing and assessment of DC traction motor armature condition and reliability during overhaul. In: IEE Machines and Drives Conference: Electrical Machines and Drives, 1-13 Sep 1995, Durham, U.K..
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Abstract
The test regime has proven highly successful for QR over the past five years, being initially driven from the commercial view point of preventing costly operational failures of traction machines. The benefits of this policy are now starting to be realised, however, it has been a long process. Such developments are highly dependent on a detailed knowledge of the motor insulation and coil structure. This process of developing nonintrusive test indicators of traction machines is now also being applied to the stator windings of the newer three-phase asynchronous traction machines now starting service in QR. This basis for cost effective maintenance and minimisation of operational failures within QR continues. There is ongoing research into the development of these indicators, and the training QR staff and contractors in testing for these indicators, and observing unusual machine behaviour and deviation from normal operation.
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