Medical Device Tests in NFPA 99

#1
We have supplied a device to a customer in the USA. His establishment's bio-med engineering department has tested it (as part of routine tests for any new equipment) according to NFPA 99.

They report that it has "excessive sink current" (all leakage current tests according to 60601-1 are well within limits.)

Is anyone familiar with this standard and the relevant tests?

(My understanding is that NFPA 99 is largely concerned with the building and systems of a hospital but does have a section on medical equipment testing).

TIA

Pads
 
Elsmar Forum Sponsor
#3
Re: Device tests in NFPA 99

I have been able to find a preprint of the forthcoming new version of NFPA 99 and from that the leakage current tests and limits are, effectively, aligned with IEC60601-1: 2005. (section 10.3.3).

The question now is are the tests of the current edition (2005) any different?
 
#5
The section that I am interested in is -

Chapter 8, Electrical Equipment, covers the performance, maintenance, and testing of electrical equipment used within health care facilities.

and in particular the testing requirements for portable equipment.

Many thanks.
 
M

MIREGMGR

#6
The section that I am interested in is -

Chapter 8, Electrical Equipment, covers the performance, maintenance, and testing of electrical equipment used within health care facilities.

and in particular the testing requirements for portable equipment.
That's obvious, but doesn't help me understand how to answer your question. I can tell you a parameter value if you identify the specific section of interest.
 
#7
My apologies for not being clear.

The part of interest is the Leakage Current tests and the Touch Current tests, and the use (if it is used anywhere) of the term "sink current" that I mentioned in the original post.

The reference numbers for these tests in the preprint of the forthcoming version are 10.3.3 and 10.3.5 respectively. In this version the tests are aligned with the equivalent tests of IEC60601-1:2005.

So my question is are the tests of NFPA99-2005 any different?

Thanks again.
 
M

MIREGMGR

#8
None of the chapter/section numbers you've provided align with the version I have. I only have a paper copy and therefore can't automatically search, but I don't see the term "sink current". Leakage current is mentioned about a zillion times in multiple chapters, being a major focus of the requirements. Sorry, maybe it makes more sense for you to just obtain a copy of the standard.
 
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