标准摘要
[中文适用范围]： IEC 60068-2-78:2025 规定了用于确定组件或设备在相对湿度高、无冷凝的恒定温度条件下，承受运输、储存及使用能力的试验方法。本文件旨在考察在特定周期内，恒定高温高湿环境（无冷凝）对试样的影响。本试验方法适用于小型设备或组件，亦适用于大型设备；无论试样是否散热，均可应用。第三版废止并取代2012年发布的第二版，属于技术修订版。相较于前一版本，本版主要包括以下重大技术变更：a) 修订试验室要求；b) 修订严等级，并增加露点温度参数；c) 将试验温度容差由区间值改为限值；d) 增加规定的预处理程序；e) 新增示意图以作澄清；f) 修订试验报告中的标准化要求。 [外文原描述]： IEC 60068-2-78:2025 establishes a test method for determining the ability of components or equipment to withstand transportation, storage and use under conditions of high humidity. The object of this document is to investigate the effect of high humidity at constant temperature without condensation on a specimen over a specified period. It is applicable to small equipment or components as well as large equipment and can be applied to both heat-dissipating and non-heat-dissipating specimens. This third edition cancels and replaces the second edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) revision of the requirements for the test chamber; b) revision of the severities and including the dew point temperatures; c) change of the temperature tolerances of the test to limits; d) inclusion of a specified preconditioning procedure; e) inclusion of a new figure for clarification purposes; f) revision of standardized requirements for the test report.
英文名称Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state