When testing with EM clamp, the IEC/EN61000-4-6 gives a requirement
to not exceed Imax (e.g Imax = 10V / 150 ohm = 66mA).

We use a current clamp to measure on a 2-wire unscreened cable, and
it is placed between the EUT and EM clamp. The current is measured to
approximate 130mA.

The test lab say it is due to the EUT impedance that the current is
that high, I mean that the max current should not exceed 66mA
whatever the EUT impedance is.


How is this Imax requirement to understand?

Best regards
Amund Westin
Oslo, Norway

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