Hi All,
Question time again, this time concerning patient leakage
current and permanently connected Class 1 equipment with a
permanently connected earth.
I have a product that exceeds the patient leakage current
between the mains and the accessible metal parts of the frame (a
motorised bed). The accessible metal part is pemanently
connected to PE. The measured leakage current from the power
supply exceeds the patient leakage requirements (0.1mA). I
searched 60601-1 and I cannot find any exception that allows for
increased leakge current limits.
If you have a metal part that is connected to earth with a
resistance of <0.1 ohm, the potential on the accessible part
shoul closely approximate 0V. I can understand the leakage
requirement if the part is not earthed, but there should be an
exception if the part is at earth potential.
Help, I have a feeling I am missing something. All assistance
gratefully received.
Regards
Doug
__________________________________________________________
Find your next car at http://autos.yahoo.ca
-
This message is from the IEEE Product Safety Engineering Society
emc-pstc discussion list. Website: http://www.ieee-pses.org/
To post a message to the list, send your e-mail to [email protected]
Instructions: http://listserv.ieee.org/listserv/request/user-guide.html
List rules: http://www.ieee-pses.org/listrules.html
For help, send mail to the list administrators:
Scott Douglas [email protected]
Mike Cantwell [email protected]
For policy questions, send mail to:
Jim Bacher: [email protected]
David Heald: [email protected]
All emc-pstc postings are archived and searchable on the web at:
http://www.ieeecommunities.org/emc-pstc
