Control During Operation
216
7SS52 V4 Manual
C53000-G1176-C182-3
Figure 6-5 Operational annunciations window DIGSI − Example
6.2.1.2 Fault events
Spontaneous an-
nunciations
In the event of a fault the display switches automatically over to the spontaneous an-
nunciations display. The first line is assigned to the annunciation
“Device trip M“ (FNo.10445/CU) and the second line to the annunciation
“Transf. Trip M“ (FNo.10433/CU). If an annunciation is signaled as coming, it
will be displayed in the row reserved for it as shown in Figure 6-6, page 216.
Figure 6-6 Display of spontaneous annunciations on the display of the central unit − Example
Press the button to acknowledge spontaneous annunciations. Following the ac-
knowledgment you will see the default display.
Retrievable
annunciations
Fault events in the power system are indicated by “Power System fault“and by
the fault number and are stored in the fault event buffer. The oscillographic record
(Chapter 6.2.3, page 221) contains detailed information on the behaviour of the power
system fault.
You can retrieve the annunciations of the last 8 power system faults of the central unit
and of the last 8 power system faults of the bay unit. A power system fault is thus de-
fined that each fault will be considered a power system fault until it is settled beyond
doubt.
The central unit can store up to 8 faults with a maximum of 80 fault events each, and
each bay unit can store 8 faults with a maximum of 100 fault events each. If more
events are generated, the oldest are overwritten in the order of their generation.
The Appendix contains a tabular list with all available fault events and their explana-
tion. Only the relevant annunciations will be displayed in the concrete situation.
Device Trip M
Transf. Trip M
LED
www . ElectricalPartManuals . com
To Next Page
Loading...
Need help?
General
