引用第2楼ajay于2009-10-13 13:13发表的 : - b( B" o& D6 E, A4 q; [请说明依据标准.; N6 m: z2 u9 V; j2 p, X* c8 Q. G 如果是IEC61558, Basic/Supplementary insulation for U=250 V, dielectric Strength=2100V.