IEC 60505:2011为在电、热、机械、环境应力或这些应力的组合（多因素应力）条件下估计电气绝缘系统（EIS）的老化奠定了基础。它规定了在制定EIS功能测试和评估程序期间，为确定特定EIS的预计使用寿命应遵循的原则和程序。所有负责EIS设备的IEC技术委员会均应使用本标准。与前一版相比，主要变化是附录A: 术语表现在有网络版和纸质版。网络版包括一个节选文本版和一个多媒体增刊。

IEC 60505:2011 establishes the basis for estimating the ageing of electrical insulation systems (EIS) under conditions of either electrical, thermal, mechanical, environmental stresses or combinations of these (multifactor stresses). It specifies the principles and procedures that shall be followed, during the development of EIS functional test and evaluation procedures, to establish the estimated service life for a specific EIS. This standard should be used by all IEC technical committees responsible for equipment having an EIS. The main change with respect to the previous edition is that Annex A: Glossary is now available in an Internet version as well as a hardcopy version. The internet version contains an abridged text version and a multimedia supplement.