固体绝缘材料耐腐蚀性和比较跟踪指数的测定方法

[中文适用范围]： 本文件规定了使用交流电压在设备部件上取下的固体绝缘材料片和材料板上测定验证和比较跟踪指数的方法。 本文件提供了在需要时测定侵蚀的程序。 注1：验证跟踪指数用作验收标准以及材料和制造部件的质量控制手段。比较跟踪指数主要用于材料特性的基本表征和比较。 该测试方法评估材料的组成以及被评估材料的表面。组成和表面条件直接影响评估结果，并在材料选择过程中使用结果时予以考虑。 测试结果不直接适用于设计电气设备时评估安全爬电距离。 注2：这符合IEC 60664-1《低压系统设备的绝缘协调 - 第1部分：原则、要求和测试》。 注3：该测试区分了在潮湿条件下使用的设备中使用的具有较差跟踪抗性、中等或良好抗性的材料。更严格的长时间测试可用于评估户外使用材料的性能，使用更高的电压和更大的测试样品（参见IEC 60587的倾斜平面测试）。其他测试方法（如倾斜方法）可以按与本文件中的滴落测试不同的顺序排列材料。 本基本安全出版物侧重于安全测试方法，主要用于技术委员会根据IEC指南104和ISO/IEC指南51中规定的原则编制安全出版物。 技术委员会的职责之一是在适用的情况下使用基本安全出版物编制其出版物。 [外文原描述]： IEC 60112:2020 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 60112:2020 edition 5.0 and the previous edition IEC 60112:2003+AMD1:2009 CSV edition 4.1. Futhermore, comments from IEC TC 112 experts are provided to explain the reasons of the most relevant changes. IEC 60112:2020 specifies the method of test for the determination of the proof and comparative tracking indices of solid insulating materials on pieces taken from parts of equipment and on plaques of material using alternating voltage. This document provides a procedure for the determination of erosion when required. This test method evaluates the composition of the material as well as the surface of the material being evaluated. Both the composition and surface condition directly influence the results of the evaluation and are considered when using the results in material selection process. Test results are not directly suitable for the evaluation of safe creepage distances when designing electrical apparatus. This basic safety publication focusing on a safety test method is primarily intended for use by technical committees in the preparation of safety publications in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. This edition includes the following significant technical changes with respect to the previous edition: Introduction of a new contaminant, solution C with a surfactant aligned with the test method of IEC 60587. The definition of the solution B was transferred to Annex B for backward reference. Introduction of a screening test, considering the fact that some materials can withstand high test voltages, but fail at lower test voltages. It has the status of a basic safety publication in accordance with IEC Guide 104.