3.3 Commissioning
317
7SD610 Manual
C53000-G1176-C145-4
3.3.13 Triggering Oscillographic Recording for Test
In order to be able to test the stability of the protection during switchon procedures
also, switchon trials can also be carried out at the end. Oscillographic records obtain
the maximum information about the behaviour of the protection.
Prerequisite Along with the capability of storing fault recordings via pickup of the protection func-
tion, the 7SD610 also has the capability of capturing the same data when commands
are given to the device via the service program DIGSI, the serial interface, or a binary
input. For the latter, event „>Trig.Wave.Cap.“ must be allocated to a binary input.
Triggering of the recording then occurs, for example, via the binary input when the pro-
tection object is energized.
An oscillographic recording that is externally triggered (that is, without a protective
element pickup or device trip) is processed by the device as a normal oscillographic
recording, and has a number for establishing a sequence. However, these recordings
are not displayed in the fault indication buffer, as they are not fault events.
Start Test Measure-
ment Recording
To trigger test measurement recording with DIGSI, click on Test in the left part of the
window. Double click in the list view the Test fault recording entry (see Figure 3-29).
Figure 3-29 Triggering oscillographic recording with DIGSI — example
Oscillographic recording is immediately started. During the recording, an annunciation
is output in the left area of the status line. Bar segments additionally indicate the
progress of the procedure.
The SIGRA or the Comtrade Viewer program is required to view and analyse the os-
cillographic data.
www . ElectricalPartManuals . com
To Next Page
Loading...
