环境试验 第2-74部分:试验 试验Xc:流体污染

[中文适用范围]： IEC 60068的这一部分给出了一种测试方法，该方法提供了一个标准程序来确定组件、设备或其组成材料（以下称为样本）承受与流体意外接触而不会受到不可接受的影响的能力。 IEC 60068 本部分中列出的流体代表了操作应用中常见的流体。样本并不应该暴露于所有这些，甚至其中任何一个。该清单也并非完整。未列出且适合进行测试的流体应包含在相关规范中。附录 A 给出了有关测试液体、样本和强度选择的指南。这些测试并非旨在证明部件或设备在与流体持续接触时的适用性，例如浸入式燃油泵。它们也不是证明不受电解腐蚀影响的测试。 [外文原描述]： IEC 60068-2-74:1999 Gives a method of test which provides a standard procedure to determine the ability of components, equipments or their constituent materials to withstand accidental contact with fluids, without being unacceptably affected. The fluids listed are representative of those commonly encountered in operational applications. It is not intended that a specimen should be exposed to all, or even any of them. Nor is the list intended to be complete; fluids not listed and for which a test is appropriate should be included in the relevant specification. Guidance is given in Annex A on the choice of test fluids, specimens and severities. These tests are not intended to demonstrate the suitability of components or equipments to perform in continuous contact with a fluid, e.g. an immersed fuel pump. Nor are they a test to demonstrate immunity from electrolytic corrosion.