在严酷环境条件下使用的电气绝缘材料.评估耐起痕和耐蚀损的试验方法

[中文适用范围]： 本国际标准描述了两种测试方法，用于评估在工频（45 Hz 至 65 Hz）恶劣环境条件下使用的电绝缘材料，通过使用液体污染物和斜面样本测量耐漏电起痕和耐腐蚀能力。两种方法如下： – 方法1：恒定跟踪电压； – 方法 2：逐步跟踪电压。注 1：方法 1 是最广泛使用的方法，因为不需要持续检查。注2：测试条件旨在加速效果的产生，但不会重现使用中遇到的所有条件。 [外文原描述]： IEC 60587:2007 describes two test methods for the evaluation of electrical insulating materials for use under severe ambient conditions at power frequencies (45 Hz to 65 Hz) by measurement of the resistance to tracking and erosion, using a liquid contaminant and inclined plane specimens. The two methods are as follows: - Method 1: constant tracking voltage; - Method 2: stepwise tracking voltage. The main changes from the previous edition are as follows: experience has indicated the need for improved description of the experimental method. For the preparation of the test specimens abrasion is recommended only if necessary. The ventilation of the test chamber is described in detail. For specimens of soft elastomeric materials a mounting support is described. The maximum depth of erosion has to be reported in the classification.