IEC 60112:2020 CMV包含官方标准及其注释版本。注释版本为您提供了一种快速简单的方法来比较IEC 60112:2020版5.0和上一版本IEC 60112:2003+AMD1:2009 CSV版4.1之间的所有更改。此外，还提供了IEC TC 112专家的意见，以解释最相关变更的原因。 IEC 60112:2020规定了使用交流电压测定取自设备部件的部件和材料板上的固体绝缘材料的验证和比较跟踪指数的测试方法。本文件提供了在需要时确定侵蚀的程序。 该测试方法评估材料的组成以及被评估材料的表面。成分和表面状况直接影响评估结果，并且在材料选择过程中使用结果时要考虑。 在设计电气设备时，测试结果并不直接适用于安全爬电距离的评估。 本基本安全出版物侧重于安全测试方法，主要供技术委员会根据IEC指南104和lSO/lEC指南51中规定的原则编写安全出版物时使用。 与上一版相比，此版本包括以下重大技术变更: 引入一种新的污染物，溶液C，表面活性剂符合IEC 60587的测试方法。将溶液B的定义移至附录B以供追溯参考。引入筛选测试，考虑到一些材料可以承受高测试电压，但在较低测试电压下失败。 根据IEC指南104，它具有基本安全出版物的地位。

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.