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ISO 19453-1:2018 pdf free

ISO 19453-1:2018 pdf free.Road vehicles一Environmental conditions and testing for electrical and electronic equipment for drive system of electric propulsion vehicles
It is desirable for the vehicle manufacturer to group the different environmental load types and levels in a reasonable number of standard requirement sets. This strategy makes it possible to carry systems/components from one vehicle project to another. Furthermore, the exact requirement levels are often unknown when designing a component for a future vehicle concept. The expected environmental loads are usually compiled from other vehicle concepts with similar conditions. The grouping is normally done by mounting location, but it is difficult to define the right number of different mounting locations and respective load profiles, because there is a conflict of aims between having only few requirement classes and tailoring the requirement levels to each application. The reason is that the environmental loads are not only depending on the mounting location. There are other major factors that affect the stress levels for systems/components. For example, body styles, drive-train concepts or package densities can create absolutely different requirement levels for devices that are installed in different vehicles at almost the same location.
The purpose of ISO 19453 is to define requirement classes for separate load types. It distinguishes between electrical, mechanical, thermal, climatic and chemical loads. For each load type, several requirement classes are defined. Every requirement class is determined by a specific code letter. The complete environmental requirement set is created by defining the code letter combination. The code letters are defined in the respective clauses of this document. Additionally, tables in the annexes of each part show the usual mounting locations and give examples of their respective code letters. For normal applications, these code letters are used. If an application is very specific and therefore the given code letter combinations cannot be used, it is possible to create new code letter combinations to serve this purpose. In case none of the given code letters is useable, new requirement levels can be created by using the code letter Z. In this case, the specific requirements are defined separately, but it is desirable not to change the test methods.ISO 19453-1 pdf free download.

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