ABB RELION Series Technical Manual page 720

Section 11
General function block features
714
GUID-20353F8B-2112-41CB-8F68-B51F8ACA775E V1 EN
Figure 379: Operation time curve based on the IDMT characteristic leveled out
with the Minimum operate time setting is set to 1000 milliseconds (the
IDMT Sat point setting is set to maximum).
1MRS758755 A
REC615 and RER615
Technical Manual