Right; also several mA (I guess 10mA at the peak is closer to reality) should be maintained during at least one 1/2 cycle. In my guess, it is the total energy that matters in the tripping (delivered over 10-20ms).How can we relate post #5 and #6 to the original question? RCD trip current is at least in a several mA range, it can't be achieved by nF Y capacitors.
then a purely capacitive current means "no energy". Then an RCD never trips with capacitive current.
I doubt this ... although I don't know for sure.
I am trying the say the same thing.To avoid this confusion let´s go back to RCD trip point definition:
Here in Germany the trip point is defined as "current RMS". Like "30mA".
True; but.the RCD is manually switched on ... the energy to switch OFF is stored in a spring.
And the trip current just needs to release the spring energy.
(Very small energy to release ... compared to the spring energy)