Regarding Fred Waechter comments on table 1 and table 3 in the 1000-3-2 std.
In my limited experience there are very few products that exhibit the type 'D' waveform and pass the table 3 limits. This waveform is the result of of a simple rectifier capacitor filter circuit which is so rich in harmonics (THD is easily 105%) that when 'fixed' via LC filters or active PFC the waveform qualifies as type 'A'. Thus when you have 'fixed' the product you go to Table 1 limits. I wouldn't devote a whole bunch of effort trying to understand the relationship between the tables. Bob
