Greetings.

A question came up recently where I work about the current requirements of the 
AC source used for testing voltage dips and interrupts. I was told the scope of 
the standard is for products up to 16A and that *includes* inrush current 
during turn-on.

I referenced table 6.1.1 where the peak inrush current capability must be 500A 
for 200 - 240v mains voltage, but was told this table only covers AC fault 
conditions, not normal operations (including turn-on).

Since one of the tests is a >95% interruption for 5 seconds, would this be 
considered an AC fault, or a normal turn-on for the EUT? Appendix A sure makes 
it sound like the inrush requirement is for the power-up of the EUT.

Thanks in advance,


Bob Richards, NCT

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