An electric point machine is a motor-driven device which operates railway track switches (points). Failure of such a device causes delay to trains and, on privatised railways, is likely to incur a financial penalty for the infrastructure owner. The most probable types of fault occurring with a typical point machine design are described. Using analyses of the results of laboratory and field tests, techniques for condition monitoring are reviewed. A net energy technique is proposed and is shown to produce discrimination and repeatability. The technique uses non-invasive sensors and may have a pay-back period of under one year for a large installation.
Condition monitoring of railway electric point machines
2002-11-01
9 pages
Article (Journal)
English
condition monitoring , machine testing , 1.1 kW , laboratory tests , motor-driven device , railways , PM motor , railway track switches , electric motors , permanent magnet motors , net energy technique , noninvasive sensors , 0.37 kW , railway electric point machines , field tests , pay-back period , fault , railway track points
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