固体绝缘材料耐电痕化指数和相对电痕化指数的测定方法

[中文适用范围]： IEC 60112:2025 CMV包含了正式标准及其注释版本。注释版本为用户提供了快速、简便的比较方式，用于对比IEC 60112:2025第6版与IEC 60112:2020第5版之间的所有变更。此外，IEC TC 112专家的评论也提供在内，以解释最重要的变更原因，或对内容的任何部分进行澄清。IEC 60112:2025规定了通过交流电压测定固体绝缘材料样品及材料试板的证明跟踪指数和比较跟踪指数的试验方法。本文件还提供了在需要时测定侵蚀情况的程序。证明跟踪指数既用于材料和加工部件的接受标准，也用于质量控制。比较跟踪指数主要用于材料性能的基本表征和比较。该试验方法评估材料的组成以及被评估材料的表面情况。材料的组成和表面状况直接影响评估结果，在材料选择过程中使用这些结果时应予以考虑。所描述的试验方法适用于最高达600 V交流电压的测试，因为更高的测试电压和直流电压会导致测试严酷度降低。本测试结果不直接适用于设计电气设备时对安全爬电距离的评估。本方法的结果已被用于设备的绝缘配合。使用这些结果时，也应考虑过电压水平、爬电距离并明确产品绝缘系统可能承受的污染等级。这符合IEC 60664-1的规定。该基础安全出版物着重介绍一种安全试验方法，主要供技术委员会在根据IEC指南104和ISO/IEC指南51所确立的原则制定安全出版物时使用。技术委员会的一项责任是，在适用的情况下，利用基础安全出版物来制定其自身的出版物。第六版取消并替代了2020年发布的第五版。本版构成技术修订。与前一版相比，本版包括以下重大技术变更：- 在7.3中，“电阻率”一词已被“导电率”替代。根据IEC指南104，本出版物具有基础安全出版物的地位。 [外文原描述]： CORRECTED VERSION 2026-02 IEC 60112:2025 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 60112:2025 edition 6.0 and the previous IEC 60112:2020 edition 5.0. Furthermore, comments from IEC TC 112 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the content. IEC 60112:2025 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. The proof tracking index is used as an acceptance criterion as well as a means for the quality control of materials and fabricated parts. The comparative tracking index is mainly used for the basic characterization and comparison of the properties of materials. 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. The described test method is designed for a test voltage up to 600 V AC, because higher test voltages and DC voltage will lead to a reduced test severity. Test results are not directly suitable for the evaluation of safe creepage distances when designing electrical apparatus. The results of this method have been used for insulation coordination of equipment. It is important that use of these results also considers the overvoltage levels, creepage distances, and establishes the pollution degree to which the product insulation system will be expected to be subjected. This is in compliance with IEC 60664-1. 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. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. This sixth edition cancels and replaces the fifth edition published in 2020. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - In 7.3, the term "resistivity" has been replaced by "conductivity". It has the status of a basic safety publication in accordance with IEC Guide 104. The content of the corrigendum 1 (2026-02) has been included in this copy.