IEC 62040-2 should have had a parallel vote in CENELEC as it was intended
to replace EN 50091-2. That was not done which lead to a lot of
confusion. The "under consideration" phrase was carried forward from EN
50091-2 to IEC 62040-2 in Annex D. The normative reference part of the IEC
standard was corrected but the Annex wasnt. The next edition of IEC
62040-2 will have the proper corrections for all the"under consideration"
type errors as well as a parallel vote in CENELEC so that there will be a
EN 62040-2.
IEC 62040-2 should have been turned into an EN and a lot of confusion would
have been eliminated. The schedule for turning the IEC to an EN as listed
below is quite ambicious to say the least. A CDV by December. It could
happen but seeing as how we haven't scheduled a meeting to discuss the
standard yet that does seem a little agressive. But hey stranger things
have happened.
Please let me know if you have further questions regarding this standard as
I am involved with the committee that is doing the writing.
John Woodgate
<[email protected]> To:
[email protected]
Sent by: cc:
owner-emc-pstc@majordom Subject: Re:
EN50091-2:1995
o.ieee.org
01/11/2002 04:18 PM
Please respond to John
Woodgate
I read in !emc-pstc that Sam Wismer <[email protected]> wrote (in
<000901c19ab1$7feb4ae0$0201a8c0@sam>) about 'EN50091-2:1995', on Fri, 11
Jan 2002:
> I am reviewing EN50091-2:1995 to determine the immunity requirements
for UPS
> systems. According to the harmonized list, this is the correct
version of
> the standard under the EMCD. It calls for radiated emissions, IEC
801-2, -3
> and -4. It then says 801-5 is under consideration. Our customer is
> requesting 801-5, but based on how I read the standard, it is not
required
> at this time. Could that be true?
>
The standard is seriously out-of-date. 801-5 was never published (but an
unfinished version was issued as ENV50142), and the requirements in
801-2 to -4 have been considerably changed in the current IEC/EN 61000-4
series.
Here is the (re-formatted) information from the CENELEC web site on the
replacement:
Project number 14872
Standard reference prEN62040-2
Reference document IEC 62040-2:200X
Technical body CLC/TC 22X
IEC/TC IEC/SC 22H
Stage code Stage code date Stage code deadline Real next stage code
31 (2020) 2001-10-31 2002-06-30 32 (3020)
Target enquiry Target approval Target ratification Target available
2003-06-30 2003-11-30 2004-03-31
Note 2001-10 decision: Work on future IEC 62040-2 to replace EN
50091-2:1995 * CDV expected December 2002
Title (EN) Uninterruptible power systems (UPS) -- Part 2:
Electromagnetic compatibility (EMC) requirements
Now, what should you do? IMO, you probably cannot just ignore the surge
test, so I suggest you apply IEC61000-4-5, and explain in your technical
file why you did that.
--
Regards, John Woodgate, OOO - Own Opinions Only.
http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
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