ABB RELION REX640 Technical Manual page 472

Section 4
Protection functions
466
GUID-698C3C81-51CE-44D8-A481-8D560C625494 V1 EN
Figure 251: Admittance characteristic with different operation modes when
Directional mode = "Reverse"
Timer
Once activated, the timer activates the START output. The time characteristic is
according to DT. When the operation timer has reached the value set with the Operate
delay time setting, the OPERATE output is activated. If the fault disappears before the
module operates, the reset timer is activated. If the reset timer reaches the value set
with the Reset delay time setting, the operation timer resets and the START output is
1MRS759142 C
REX640
Technical Manual