Siemens SIMEAS R - Page 88

7
7.2 Fault Recorders
88 Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
Figure 7-19 Triggering with recording rate = 1 nominal cycle
Figure 7-20 Triggering with recording rate = 3 nominal cycles
Filter time 5 nominal cycles
Trigger threshold,
gradient trigger
Trigger
f
n
1/3 f
n
5 nominal cycles
f
t [nominal cycles ]
Recording rate = 1 nominal cycle
Recorded value
Actual signal
Filter time
15 nominal cycles
Trigger threshold,
gradient trigger
Trigger
f
n
1/3 f
n
f
t [nominal cycles ]
Recording rate = 3 nominal cycles
5 nominal cycles
Recorded value
Actual signal