Insulation coordination for equipment within low-voltage systems - Part 2-1: Application guide - Explanation of the application of the IEC 60664 series, dimensioning examples and dielectric testing (IEC/TR 60664-2-1:2011 + Cor. :2011)
低压系统内设备的绝缘配合第2-1部分:应用指南IEC 60664系列应用说明、尺寸标注示例和介电测试(IEC/TR 60664-2-1:2011+Cor:2011)