电气绝缘系统.对已确定EIS调整的热评定方法.第1部分:散绕绕组EIS

[中文适用范围]： 本部分IEC 61858列出了对已建立的电气绝缘系统（EIS）进行修改以进行热分类资格认定的所需测试程序。本标准适用于用于线绕式绕组电工装置的EIS。测试程序具有比较性，即候选EIS的性能与已建立的参考EIS的性能进行比较，该参考EIS根据IEC 60505具有已证实的服役经验，或已通过IEC 61857系列中给出的程序之一进行评估。 本部分IEC 61858列出了对已建立的电气绝缘系统（EIS）进行修改以进行热分类资格认定的所需测试程序。本标准适用于用于线绕式绕组电工装置的EIS。测试程序具有比较性，即候选EIS的性能与已建立的参考EIS的性能进行比较，该参考EIS根据IEC 60505具有已证实的服役经验，或已通过IEC 61857系列中给出的程序之一进行评估。 [外文原描述]： IEC 61858-1:2014 lists the required test procedures for qualification of modifications of an established electrical insulation system (EIS) with respect to its thermal classification. This standard is applicable to EIS used in wire-wound winding electrotechnical devices. The test procedures are comparative in that the performance of a candidate EIS is compared to that of a reference EIS, which has proven service experience in accordance with IEC 60505 or has been evaluated by one of the procedures given in the IEC 61857 series. This first edition of IEC 61858-1 cancels and replaces the third edition of IEC 61858, published in 2008. It constitutes a technical and editorial revision. This edition includes the following significant technical changes with respect to the previous edition: a) this part is specifically for wire-wound winding EIS; b) new figures and charts support the contents.