Compliance of IEC61010-1 and VDE0884-10

Hello,

 

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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  • Hello MSCantrell,

     

    Thank you for your explanation. I found it very useful.

     

    If I understood correctly, in this case the rating concerning IEC61010-1 is mainly based on the creepage constraints of the package (besides assuming the worst case of Material Group III). If I consider that the package belongs to Material Group II, the working voltage can be increased up to something more than 500Vrms while meeting reinforced insulation for IEC61010-1.

     

    Kind regards.

Reply
  • Hello MSCantrell,

     

    Thank you for your explanation. I found it very useful.

     

    If I understood correctly, in this case the rating concerning IEC61010-1 is mainly based on the creepage constraints of the package (besides assuming the worst case of Material Group III). If I consider that the package belongs to Material Group II, the working voltage can be increased up to something more than 500Vrms while meeting reinforced insulation for IEC61010-1.

     

    Kind regards.

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