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Home Publications Articles Selection of the parameters for diagnostics of electric train auxiliary circuits’ equipment

Selection of the parameters for diagnostics of electric train auxiliary circuits’ equipment

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One of the most important tasks in the increase of the maintenance quality is an improvement of the operating reliability for motor driven rolling stock (MDRS) when there are low maintenance expenses as well as a limited period of time for repair and maintenance.

In the current state the rolling stock is maintained by the schedule-based preventive repair. That’s the reason of the high consumption of resources, regardless of the real operating conditions of the unit in the MDRS. At the same time, the origin and development of defects lead to unscheduled repairs as well as additional expenditures.

The solution can be provided by the on-board condition monitoring system. It makes an assessment of the state of every unit and gives objective information about the expediency of a further operation in real time. The effectiveness of the system is in its continuous operation and making a diagnosis within a period, which is less than the period prior to a malfunction development to a critical (emergency) condition. This makes possible the gradual transition from the resource-demanding schedule-based preventive repair system to the condition-based maintenance.

Machinery of auxiliary circuits including the system of the auxiliary machines is the most important machines, which provide normal functioning of all electric train systems.

The necessity of this machinery real-time condition monitoring is caused by hard service conditions, in comparison with all-industrial machines. The following conditions could cause an early mechanical failure as well as unplanned repair: the contact mains voltage fluctuation, sudden temperature difference, the high humidity, and also vibration.

 

Tsurpal A.E. Selection of the parameters for diagnostics of electric train auxiliary circuits’ equipment // Operational reliability of locomotive park and increase of efficiency of train haulage. - Omsk: OSTU, 2012. - pp. 143-149

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Tags: diagnostics electric multiple unit COMPACS-EXPRESS-3 MDRS Date: 11.08.2015
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