time taken for a RCM to change from the non-alarm state to the alarm state in response to the sudden appearance of a residual current which exceeds the present level, aeg, mis kulub rikkevooluseireseadmel/-jälguril mittehäireolekust häireolekusse üleminekuks seoses rikkevoolu äkilisele ilmnemisele, mis ületab hetktaset