IEC TR 61857-2:2015（E）给出了确定用于评估拟定电气绝缘系统（EIS）的适当试验方法的指南。其中一些标准用于EIS的评估和分类，而其他标准则确定了评估拟议或已建立EIS的单因素或多因素应力的适当方法。本技术报告适用于IEC标准的各种工作电压范围内的电工产品中使用的现有或拟议EIS。该报告注意根据施工和预期运行条件选择适当的标准。

IEC TR 61857-2:2015(E) gives guidelines to identify the appropriate test method to be used for the evaluation of a proposed Electrical Insulation System (EIS). Some of the standards are for evaluation and classification of the EIS, while other standards identify the appropriate method to evaluate single or multi-factor stresses of a proposed or of an established EIS. This Technical Report is applicable to existing or proposed EIS used in electrotechnical products across a wide range of operating voltages of IEC Standards. The report takes care to select the appropriate standard based on construction and intended operating conditions.