I read in !emc-pstc that Lesmeister, Glenn <[email protected]>
wrote (in <[email protected]
qcorp.net>) about 'Harmonics Testing for PCs' on Thu, 20 Feb 2003:

>The problem with class A limits is that the higher your power draw, the lower 
>your relative limits are.  As you get between 600 and 1000W, class D limits
can 
>be higher than class A limits in which you might pass (depending on how bad
you 
>were failing).  

Class D limits include maximum currents equal to the Class A limits, but
Clause 5 of the standard limits Class D to products with active input
power not exceeding 600 W. So you can't apply Class D limits above 600
W.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk 
Interested in professional sound reinforcement and distribution? Then go to 
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!


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