Try 50091-2.  That's the Euro one and it includes EMI & immunity and 
covers the different operating modes.  For domestic products (assuming 
you're in the US, that is) the normal FCC rules apply - just be sure to 
test all the operating modes (to cover all the bases, 0%, 50%, and 100% 
load in both AC and battery operation should be a good place to start - 
and will probably suffice for the report).  A hint from experience - any 
narrowband emissions will probably stay the same between modes - it is 
the broadband switching noise (for radiated, probably 30-250 MHz or so) 
that will vary between modes.  This should help during the 100% load 
battery scans that need to be completed in a matter of minutes - just be 
sure to test to make sure that this is indeed the case.

One other comment - in the case of 3 phase systems, you may want to 
check to see if the manufacturer has 50091-2 approvals for the EU 
version.  3 phase systems vary here and in the EU and I know of at least 
one manufacturer who specialized the compliance tests to reflect the 
countries in which the product could be installed.  In other words, 
their US version of the product was only labeled for the FCC, while 
their EU version was tested to 50091-2 (and maybe FCC as well??).  A 
domestic sample would most likely have been the FCC only type, but an EU 
version may well be already approved.

Best Regards,
Dave Heald


Garnier, David S (MED) wrote:
> Gentlemen,
> 
> I need to bone up EMC standards applicable to UPS supplies,
> (3 phase - 10 to 20 kVa is the range I am looking at.)  
> 
> We have a  vendor that has labeled his product stating that it 
> complies with FCC rules for a Class A computing device standards,
> (I think it's a little more complicated than that...)   Could someone
> please suggest a couple standards that I could look up?
> 
> Thanks!
> 
> dave garnier 
> 
> 
>                       David Garnier
>                       e GE Medical Systems
>                       ___________________________________________
>                       David S. Garnier
>                       Senior Technician
>                       PET Engineering
>                       3000 N. Grandview Ave - M/S W-1250
>                       Waukesha, Wi. 53188
>                       Tel: 262.312.7246
>                       
> 
> 
> 
> 
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