Hi,
We have been using pfc corrected power supplies where each harmonic has
met the requirements of EN61000-3-2 Class A limits. Investigating some
new ranges of power supplies, we find that some individual harmonic
currents exceed the limits. The manufacturers have quoted sections 3Z1,
3Z3, 6
John,
I was looking at my copy of 61000-3-2 to find the references you all are
making. My copy does not have a paragraph 6.2.3.3 for example. Then I
realized you are referring to EN 61000-3-2 : 2000. What I have is IEC
61000-3-2 : 2000.
Can anyone tell me that there is that big a difference
Neil,
If the power supplies are intended for audio equipment, where the peak
power required for some types of music can be 10 times the average
power, I could buy the manufacturer's explanation. Otherwise their
explanation of how they pass EN 61000-3-2:2000 sounds bogus to me.
An EN 61000-3-2:20
Neil I can't answer your question directly, but..the EMC rules have
provisions which allow exclusion of items which draw more than 1kW and or are
not for consumer applications. Your power supplies may fall inside these
exclusions and therefore may not need EMC evaluation. We have a line
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