ABB Relion REC615 - Page 731

Table 719: Trigger mode observation times
Trigger mode Observation time
Single Only one period of observation time is acti-
vated.
Periodic The time gap between the two trigger sig-
nals is seven days.
Continuous The next period starts right after the previ-
ous observation period is completed.
The length of the period is determined by the settings Obs period selection and
User Def Obs period . The OBS_PR_ACT output is an indication signal which exhibits
rising edge (TRUE) when the observation period starts and falling edge (FALSE)
when the observation period ends.
If the
Percentile unbalance , Trigger mode or Obs period duration settings change
when OBS_PR_ACT is active, OBS_PR_ACT deactivates immediately.
1MRS758755 C
Power quality measurement functions
REC615 & RER615
Technical Manual
731