本指南描述了一个程序，可用于评估和比较大型交流电机中使用或拟使用的绝缘系统。本文概述的试验适用于用于形成额定电压为2300 V或更高的发电机、电机和同步冷凝器的绕线预绝缘电枢（定子）绕组线圈和/或棒的所有绝缘系统。这些绝缘系统的基本组成部分通常是云母与增强、粘合和浸渍材料相结合。本指南基于mica系统行业的经验；然而，对其它绝缘系统的任何评价都应考虑本指南的要求。本文件不拟用作制造商的质量保证测试计划。 也不应用于指定或采购电枢绕组线圈/棒。

This guide describes a procedure that may be used to evaluate and compare insulation systems used, or proposed for use, in large ac electric machines. The tests outlined herein are applicable to the groundwall insulation systems applied to form-wound, pre-insulated armature (stator) winding coils and/or bars of generators, motors, and synchronous condensers rated 2300 V or higher. The basic component of these insulation systems is usually mica combined with reinforcing, bonding, and impregnating materials. This guide is based on the experience of the industry with mica-based systems; any evaluation of other insulation systems should, however, consider the requirements of this guide. This document is not intended for use as a manufacturer's quality assurance test plan. Nor should it be used for specifying or procuring armature winding coils/bars.