We have several times been asked to test Inrush Current and have this
function on our Harmonic tester, but it is not defined how it measure and we
get very different measurements each time we switch ON the same EUT.


I can't find an IEC definition on the measurement other than "peak current".


I asume that it is most correctly to measure the current  by switching ON at
the top of the sine (90 deg), but what about duration?


A peak current with a duration of 0.1 ms is not as interresting as the same
current for 1 ms. And what if there are several current peaks after each
other such as ringing wave form?


Best regards,


Kim Boll Jensen

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