Switching Statistics - Siemens siprotec 7SA522 User Manual

7.1.2

Switching Statistics

7.1.2.1 Viewing the Switching Statistics
From the
Device Front
:
From PC with
®
DIGSI 4
7SA522 Manual
C53000-G1176-C119-2
The messages in switching statistics are counters for the accumulation of interrupted
currents by each of the breaker poles, the number of trips issued by the device to the
breaker. The interrupted currents are in primary terms.
Switching statistics can be viewed on the LCD of the device, or on a PC running
®
DIGSI 4 and connected to the operating or service interface.
A password is not required to read switching statistics; however, a password is re-
quired to change or delete the statistics.
For each trip command initiated by a protective element of the device, the magnitude
of interrupted current for each circuit breaker pole is determined and stored. The cur-
rent magnitudes are added to previously interrupted currents, and the accumulated
values are stored.
In devices with automatic reclosure the number of reclosure commands is counted,
separately for the first four reclosures.
With a device ready for operation, first press the
The first menu item $QQXQFLDWLRQ is marked.
key to enter the $1181&,$7,21 sub-menu (see Figure 7-1).
Press the
key to select the item 6WDWLVWLF, and switch to the list of statistics values
Use the
key. The 67$7,67,& list appears. See Figure 7-12.
using the
67$7,67,&6

Σ ,/
Σ ,/
Etc.
Figure 7-12 Switching statistics viewed from the front display
Under $QQXQFLDWLRQ (Figure 7-2), the switching statistics can be found by double
clicking. Double click on 6WDWLVWLF. The contents of the statistic counters is dis-
played in another window. See Figure 7-13.
MENU

N$
N$
Control During Operation
key. The 0$,1 0(18 appears.
7-11