标准摘要
[中文适用范围]： 该标准测定了绝缘材料在电应力、高湿度和高温的影响下对与其接触的金属产生电解腐蚀的能力。电解腐蚀的影响在一项测试中通过连续使用两种方法进行评估： • 目视半定量方法包括通过目视比较阳极和阴极金属条上出现的腐蚀与参考图中给出的腐蚀。该方法包括直接目视评估两个铜带的腐蚀程度，这两个铜带分别充当阳极和阴极，在指定的环境条件下在直流电势差下与被测绝缘材料接触。通过目视比较阳极和阴极金属条上的腐蚀痕迹与参考图中所示的腐蚀痕迹来评估腐蚀程度； • 定量方法，涉及拉伸强度测量，在目视检查后对相同的阳极和阴极金属条进行测量。资料性附录 C 中描述了用于确定电解腐蚀的附加定量测试方法，其中涉及铜线拉伸强度测量。 [外文原描述]： IEC 60426:2007 determines the ability of insulating materials to produce electrolytic corrosion on metals being in contact with them under the influence of electric stress, high humidity and elevated temperature. The effect of electrolytic corrosion is assessed in one test by using consecutively two methods: - visual semi-quantitative method consisting in comparing visually the corrosion appearing on the anode and cathode metal strips, with those given in the reference figures. This method consists of the direct visual assessment of the degree of corrosion of two copper strips, acting as anode and cathode respectively, placed in contact with the tested insulating material under a d.c. potential difference at specified environmental conditions. The degree of corrosion is assessed by visually comparing the corrosion marks on the anode and cathode metal strips with those shown in the reference figures; - quantitative method, which involves the tensile strength measurement, carried out on the same anode and cathode metal strips after visual inspection. An additional quantitative test method for determining electrolytic corrosion, which involves tensile strength measurement of copper wire, is described in the informative Annex C.
英文名称Electrical insulating materials - Determination of electrolytic corrosion caused by insulating materials - Test methods