标准摘要
[中文适用范围]： IEC 61857 的这一部分描述了通用模型 (GPM) 和高通道替代模型 (GPM-TC)，可用于评估没有特定电工产品或没有特定电工产品的绕线电气绝缘系统 (EIS)。必需的。 [外文原描述]： IEC 61857-21:2009 describes a general-purpose model (GPM) and a tall channel alternative model (GPM-TC) which can be used for the evaluation of wire-wound electrical insulation systems (EIS) where specific electrotechnical products are not available or required. The third edition cancels and replaces the second edition published in 2004, and constitutes editorial revisions to make this standard compatible with Parts 1 and 22.
英文名称Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications