IEC 60601-1 2nd Clause 17 and 3rd edition - Electrical Isolation

benjh · Oct 18, 2011

Medical device manufacturers often electrically isolate applied parts from ground and do not provide additional insulation. This was possible per 60601-1 2nd Ed. clause 17, in which minimum creepage and clearance distances were not required if the short-circuited device met maximum leakage requirements. It is not clear what happened to this rational in 60601-1 3rd edition. Review of the standard seems to deem the above devices as non-conforming.
Please help!

Stijloor · Oct 18, 2011

benjh said:
Medical device manufacturers often electrically isolate applied parts from ground and do not provide additional insulation. This was possible per 60601-1 2nd Ed. clause 17, in which minimum creepage and clearance distances were not required if the short-circuited device met maximum leakage requirements. It is not clear what happened to this rational in 60601-1 3rd edition. Review of the standard seems to deem the above devices as non-conforming.
Please help!

Can someone help with this?

Thank you very much!!

Stijloor.

Peter Selvey · Oct 19, 2011

I think the related requirement in Clause 17 (2nd ed) has now been incorporated into Clause 8.1 a) of the 3rd ed.

If cr/cl spacings below limits are shorted but the requirements of Clause 8.4 are met (leakage current) then the equipment is still considered in compliance.

benjh · Oct 19, 2011

Thats it! Thank you Peter!

IEC 60601-1 2nd Clause 17 and 3rd edition - Electrical Isolation

benjh

Stijloor

Peter Selvey

benjh

Similar threads