When the ADE7953 happen OCP & OVP, how much time will IRQ Pin from high to low?
As over voltage and over current detection work based on absolute peak value of the instantaneous waveforms, you should expect to wait at least a half-line cycle period before getting the interrupt. If the peak of the instantaneous waveform is greater than the OILVL or OVLVL threshold value only by a very small margin, then to get an accurate detection, you can expect to get the interrupt in a few line cycles.
Refer to page 48 of Rev.B datasheet for further details on how the feature is implemented in the IC.
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