IEC 60068-1-2013 pdf free

IEC 60068-1-2013 pdf free.Environmental testing – Part 1: General and guidance.
These test methods are based upon available international engineering experience and judgement and are primarily designed to provide information on the following properties of specimens:
a) the ability to operate within specified limits of temperature, pressure, humidity, mechanical stress or other environmental conditions and combinations of these conditions;
b) the ability to withstand conditions of transportation, storage and installation.
NOTE 1 The IEC 60721 series provides a system for classification of environmental conditions and gives relevant definitions.
The tests in this standard permit the comparison of the performance of sample products. To assess the quality or useful life of a given production lot, the test methods should be applied in accordance with a suitable sampling plan and may be supplemented by appropriate additional tests, if necessary.
NOTE 2 ISO defines quality” as the degree to which a set of inherent characteristics fulfils requirements..
NOTE 3 wliseful life”: under given conditions, the time interval beginning, at a given instant of time, and ending when the failure intensity becomes unacceptable or when the item is considered unrepairable as a result of a fault.
To provide tests appropriate to the different intensities of an environmental condition, some of the test procedures have a number of degrees of severity. These different degrees of severity are obtained by varying the time, temperature, air pressure or some other determining factor, separately or in combination.
As the tests and their degrees of severity should be based on real environmental conditions that a particular specimen might encounter, the framework and the necessary phases for the environmental test tailoring process are provided. The test tailoring process may be used to produce the required relevant test specification for the particular specimen.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60068-2 (all parts), Environmental testing — Tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions app’y.
NOTE Tests covered by this standard may, in themselves, consist of a series of operations in order to determine the effect of such a test, or series of tests, on a specimen.IEC 60068-1 pdf free download.