标准摘要
[中文适用范围]： IEC 60068-2-78:2025 RLV包含官方的IEC国际标准及其红线版本。红线版本仅提供英文版，便于用户快速、直观地比较现行IEC标准与上一版之间的所有变更。IEC 60068-2-78:2025规定了一种测试方法，用于评估组件或设备在高湿度条件下运输、储存和使用时的耐受能力。本文件旨在研究在恒定温度且无冷凝的高湿度环境下，试样在规定时间内所受的影响。本标准适用于小型设备或组件以及大型设备，既适用于散热型试样，也适用于非散热型试样。本版为第三版，取消并取代2012年发布的第二版。本版为技术修订版，与上一版相比，主要技术变更包括：a) 修订测试室的要求；b) 修订严酷度等级并增加露点温度；c) 将测试温度的容差改为限值；d) 增加了特定的预处理程序；e) 增加了一幅图以帮助说明；f) 修订了测试报告的标准化要求。 [外文原描述]： IEC 60068-2-78:2025 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. 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