What is PD IEC/TR 62131-3 - Vibration and shock in rail vehicles about?
PD IEC/TR 62131-3 is a standard that covers vibration and shock in rail vehicles, enabling the minimisation of shock severities for sensitive electrotechnical equipment.
PD IEC/TR 62131-3 reviews the available dynamic data relating to electrotechnical equipment transported by rail vehicles. The intent is that from all the available data an environmental description will be generated and compared to that set out in IEC 60721.
In PD IEC/TR 62131-3, for each of the sources identified the quality of the data is reviewed and checked for self-consistency. The process used to undertake this check of data quality and that used to intrinsically categorise the various data sources are set out in IEC/TR 62131-1.
PD IEC/TR 62131-3 report primarily addresses data extracted from a number of different sources for which reasonable confidence exists as to their quality and validity.
PD IEC/TR 62131-3 addresses vibration and shock data from three different measurement exercises, i.e. one on the UK rail system and two on the USA rail system. Although one of these relates to a multimodal system in limited use worldwide, data from it are included to facilitate the validation of information from other sources.
Although the majority of the measurement exercises considered in PD IEC/TR 62131-3 provide both vibration and shock information, a number of measurement exercises are biased towards the shock conditions of rail transportation.
Who is PD IEC/TR 62131-3 - Vibration and shock in rail vehicles for?
PD IEC/TR 62131-3 on vibration and shock in rail vehicles applies to:
- Environmental testing agencies
- Testing personnel and inspectors
- Simulation testing agencies
- Quality assurance services
Why should you use PD IEC/TR 62131-3 - Vibration and shock in rail vehicles?
Electrotechnical equipment and products are subjected to a multitude of vibrations and shocks in transportation in rail vehicles. In rail vehicles, the severity and incidence of shocks are mostly related to the occurrence of shunting of individual wagons. Data gathered through trials enables the design, development and packaging of electrotechnical equipment and components.
PD IEC/TR 62131-3 provides users guidance on major factors contributing to the vibration environment such as:
- Vehicle running gear characteristics
- Track condition
- Vehicle speed
- Vehicle lading condition
PD IEC/TR 62131-3 provides users guidance on shocks severity that is dependent on impact speed, buffering gear characteristics and total mass of the wagon. In PD IEC/TR 62131-3, two types of the buffer are used: spring and hydraulic, enabling users to determine the impact of shunting loads to mitigate impact shocks.
With obedience and compliance to PD IEC/TR 62131-3, users can ass the impact of vibration and shock on electrotechnical equipment in rail vehicles, ensuring the durability, stability and effective transportation of the equipment.
