Siemens siprotec 7SA6, Manual

Page: 523 / 876

Control During Operation
7-9
7SA6 Manual
C53000-G1176-C156-2
Figure 7-9 Example of fault messages in DIGSI
®
4
7.1.1.4 Earth Fault Messages
Devices with sensitive earth fault detection provide special earth fault logs. The earth
faults are registered if the earth fault detection function is set to “OFF” (Address
3001
=
Alarm Only
) and an earth fault was already in queue so that the trip delay (
T
Sens.E/F
) could expire.
Up to 200 earth fault messages can be stored for the last 8 earth faults.
All available indications are displayed and explained in Appendix B. In a specific case,
of course, only the applicable messages appear on the display.
From the
DeviceFront With a device ready for operation, first press the key. The
MAIN MENU
appears.
The first menu item (
Annunciation
) is marked.
Press the key to enter the
ANNUNCIATION
sub-menu (see Figure 7-1).
Using the key, select the sub-menu item
Earth Fault Messages
and move to
the earth fault logs using the key. The
EARTH FAULT MESSAGES
selection ap-
pears.
In this sub-menu, the indications for the last 3 network faults can be selected, again
using the
and keys. See the example in Figure 7-10.
If no messages are present for a fault, then entrance is denied and “
List Empty
” is
displayed.
The messages within an earth fault log are listed in chronological order and numbered
consecutively, from the oldest to the newest ones.
The inception of an earth fault is identified with the date (without indication of the year)
and time in hours, minutes, and seconds (resolution = 1 ms). See the example in Fig-
ure 7-10.
MENU