Compliance of IEC61010-1 and VDE0884-10



I am confused about the safety ratings of the part ADuM4120. Its datasheet states reinforced insulation for a working voltage of 400Vrms to meet IEC61010-1, while the rating for reinforced insulation with VDE0884-10 is 849Vpeak.


According to the section 14 of IEC61010-1, this norm accepts any part meeting another recognized safety standard. This means that ADuM4120 would meet reinforced insulation for 849Vpeak because it complies with VDE0884-10. So, why the rating specified for IEC61010-1 in the datasheet is lower (400Vrms)?


Thank you in advance.

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