固体电气绝缘材料试验前和试验时采用的标准条件

[中文适用范围]： 本国际标准给出了用于测试固体电绝缘材料的可接受的暴露时间、温度、大气湿度和液体浸没条件。该范围足够宽以使得能够选择合适的条件，从而可以实现调节的任一主要目标（下面作为a）和b）列出。这些目标旨在通过以下方式获得更高的测试结果再现性：a) 部分抵消由于测试样本的过去历史而导致的材料性能变化（通常称为“标准化”，此处称为预处理），以及 b) 确保测试过程中条件的一致性。本标准不适用于确定暴露于特定温度和湿度或浸入液体对材料性能的影响。 IEC 60068 的各个部分给出了与环境对材料的影响相关的程序。 [外文原描述]： IEC 60212:2010 gives the accepted conditions of exposure time, temperature, atmospheric humidity and liquid immersion for use in testing solid electrical insulating materials. The range is sufficiently wide to enable suitable conditions to be selected so that either of the primary objects, set out below as a) and b), of conditioning can be achieved. These objectives aim to obtain greater reproducibility of test results by: a) partly counteracting the variations of the properties of the material due to the past history of the test specimens (often known as "normalizing", here called preconditioning), and b) ensuring uniformity of conditions during the testing. This standard is not intended to be applied for determining the influence of exposure to certain temperatures and humidity or immersions in liquids, on the properties of a material. Procedures pertaining to the effect of an environment on a material are given in various parts of IEC 60068. The significant technical changes with respect to the previous edition are as follows: - the scope and normative references have been updated and terms and definitions completely reviewed; - technical details in Table 2 have been aligned to today's usage.