Triggering Oscillographic Recordings For Test - Siemens siprotec 7SD5 User Manual

3.3.18 Triggering Oscillographic Recordings 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 7SD5 also has the capability of initiating a measured value recording using
the operator program DIGSI
latter, event „>Trig.Wave.Cap." must be allocated to a binary input. Triggering of
the recording is done, e.g. via binary input on switchon of the protection object.
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 Triggering Os- In order to start a test measurement recording via DIGSI
cillographic Re- window the operator function Test. Double-click in the list view the entry Test Wave
cording Form (see Figure 3-35).
Figure 3-35
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.
7SD5 Manual
C53000-G1176-C169-1
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via the serial interface and via binary inputs. For the
Triggering oscillographic recording with DIGSI
3.3 Commissioning
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, select in the left of the
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— Example
515