A product has a switched mode power supply with a current sensing circuit that
causes the supply to shut down when a surge pulse is applied to the AC mains in
accordance with EN61000-4-5/IEC1000-4-5. After about 10 minutes, the supply can
be turned back on and normal operation of the product can be resumed by the
operator. Does this product conform to criterion B of the EN 50082-1 or EN
55024 standards? I believe it does because the sensing circuit is specifically
designed to protect the product against this kind of voltage/current surge and
the product operation is fully recoverable by the operator afterward. However,
I would like to hear how others who do this testing would interpret this.
Jim Hulbert
Senior Engineer - EMC
Pitney Bowes
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