固体绝缘材料证明和比较跟踪指数的测定方法

[中文适用范围]： IEC 60112:2025 规定了使用交流电压对从设备部件取下的试样和材料试板进行测试，以确定固体绝缘材料的耐电痕指数和比较电痕指数的方法。本文件提供了在必要时确定腐蚀情况的程序。耐电痕指数既作为材料和制成品的验收标准，也作为质量控制的手段。比较电痕指数主要用于材料的基本特性和比较。该测试方法评估了材料的组成及其表面状态。材料的组成和表面状态直接影响评估结果，并在材料选择过程中被考虑。所描述的测试方法设计用于最高600 V交流电压的测试，因为更高的测试电压和直流电压将导致测试严酷度降低。测试结果不能直接用于电气设备设计中对安全爬电距离的评估。该方法的结果已被用于设备的绝缘配合。在使用这些结果时，还需考虑过电压水平、爬电距离以及产品绝缘系统预期承受的污染等级。这符合IEC 60664-1的规定。本基本安全出版物主要旨在供技术委员会根据IEC指南104和ISO/IEC指南51中规定的原则，在制定安全出版物时使用。技术委员会的责任之一，是尽可能地在出版物中使用基本安全出版物。本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。与上一版相比，本版包括以下重大技术变更：- 在7.3中，“电阻率”一词已被“电导率”替代。根据IEC指南104，本出版物具有基本安全出版物的地位。 [外文原描述]： CORRECTED VERSION 2026-02 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.