Hi Enci:
> Only this morning have I just tested a competitive product from a
> manufacturer in Germany, which failed miserably (+40dB) on conducted
> emissions testing and earth leakage, to be fair only 2mA, but the standard
> clearly states 1mA!.
What standard specifies 1 mA?
The irony is that leakage current is largely due to
Y capacitors in the EMC filter. Higher leakage
current suggests higher value Y capacitors. Higher
value Y capacitors implies lower conducted emissions.
Best regards,
Rich
ps: IEC 60950 is the applicable standard for IT
equipment.
The leakage current limit values in IEC 60950
are:
0.25 mA for parts and circuits that are
not connected to protective earth, and
3.5 mA (0.75 mA for handheld equipment) for
parts and circuits that are connected to
protective earth.
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