IEC EN 60721-4-5 Classification of Environmental Conditions - Part 4-5: Guidance for Correlation and Conversion of IEC EN 60721-3 Environmental Condition Classes with IEC EN 60068 Ground Vehicle Installations Environmental Tests

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 60721-4-5 testing. IEC EN 60721-4-5 deals with the correlation and conversion of the conditions given in IEC EN 60721-3-5 with the environmental tests defined in IEC EN 60068-2. An environment can be composed of a number of environmental conditions such as dynamic, climatic and biological and other effects resulting from chemically and mechanically active substances. Only dynamic and climatic conditions are considered in this report. The purpose of this whitepaper is to provide guidance to the specification author with a set of easy-to-use tables that relate and transform these conditions.

It is important to highlight the indicative nature of this report, as it is almost impossible to specify mandatory requirements for worldwide use. However, where tests different from those recommended in this report are required, the guidance provided should establish principles and methodology for identifying alternative tests.

IEC EN 60721-3-5 specifies the classes of environmental parameter groups together with the relevant environmental conditions to which products may be exposed during transport. Parameters in these classes are given separately, but products may be exposed to them simultaneously. Some of the parameters are independent, while others, such as solar radiation and temperature, may be strongly related.

IEC EN 60068-2 specifies a set of environmental test procedures and appropriate test intensities. The choice of test intensities depends on the failure results of the product. Two types of products can be placed in places covered by the same environmental class. However, due to different failure results, one type of product can be tested under significantly more severe conditions than the other. This report only considers normal failure results; for higher failure results, test severity may need to be increased based on expert knowledge of the product.

Land vehicle classes indicate the environmental conditions to which a product (not forming part of the vehicle) is exposed during use. Environmental conditions created by the product in the same place in an enclosure are not included in these classes. Although these classes are not designed for products that form part of the vehicle, they can also be used for certain parts whose environmental conditions are subject to change.

The relevant specification should specify when the product is operational during the environmental testing program and what performance requirements and failure criteria should be measured before, during and after testing.

EUROLAB assists manufacturers with IEC EN 60721-4-5 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.