ABB Relion 620 Series - Current Based Inverse Definite Minimum Time Characteristics; IDMT Curves for Overcurrent Protection

Figure 592: Operating effect of the BLOCK input when the selected blocking mode
is "Freeze timer"
If the BLOCK input is activated when the operate timer is running, as described in
Figure 592 , the timer is frozen during the time BLOCK remains active. If the timer
input is not active longer than specified by the Reset delay time setting, the operate
timer is reset in the same way as described in Figure 590 , regardless of the BLOCK
input .
The selected blocking mode is "Freeze timer".
11.2 Current based inverse definite minimum time
characteristics
General function block features
1MRS757644 H
1122 620 series
Technical Manual