对于电气设备，EIS（热老化）是一种标准的评定方法，而对于电气设备，EIS（热老化）是一种主要的评定方法。该程序比较了候选EIS和参考EIS的相对热性能。本标准涵盖了在50/60 Hz下工作电压高达600 V的此类机械的绝缘系统。本标准提供了建立绝缘系统相对寿命-温度关系的统计方法。为了具有任何意义，参考绝缘系统必须有足够的现场服务数据支持。本程序旨在评估风冷无规绕制交流电机中使用的绝缘系统？正常使用条件。 A.本程序本身不包括绝缘系统，例如接触导电污染物、辐射、逆变器应用，或在油、制冷剂或其他可能降解绝缘材料的介质中操作。

This is a standard test procedure for the thermal evaluation and qualification of electrical insulation systems (EISs) for random-wound ac electric machinery, where thermal degradation is the dominating aging factor. This procedure compares the relative thermal performance of a candidate EIS to that of a reference EIS. This standard covers insulation systems for such machinery with operating voltage of up to 600 V at 50/60 Hz. This standard provides a statistical method for establishing a relative life-temperature relationship for an insulation system. To have any significance, the reference insulation system must be supported with adequate field-service data. This procedure is intended to evaluate insulation systems for use in air-cooled, random-wound ac electric machinery with "usual service conditions." This procedure, on its own, does not cover insulation systems such as exposure to conducting contaminates, radiation, inverter applications, or operation in oils, refrigerants, or other media that potentially degrade insulating materials.