Siemens SIPROTEC 7SJ61, Руководство пользователя, Страница: 302 / 454

Mounting and Commissioning
3.3 Commissioning
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
302
3.3.11 Creating Oscillographic Recordings for Tests
General
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.
Requirements
To be able to trip an oscillographic recording, parameter Osc Fault Rec. must be configured to
Enabled
in
the Functional Scope . Apart from the capability of storing fault recordings via pickup of the protection function,
the 7SJ61 also has the capability of initiating a measured value recording via the operator program DIGSI, the
serial interface or binary input. In the latter case, the information
„>Trig.Wave.Cap.“
must be allocated to
a binary input. Triggering for the oscillographic recording then occurs, for instance, via the binary input when
the protection object is energized.
Those that are externally triggered (that is, without a protective element pickup) are processed by the device
as a normal oscillographic record. For each oscillographic record a fault record is created which is given its
individual number to ensure that assignment can be made properly. However, these recordings are not dis-
played in the fault indication buffer, as they are not fault events.
Triggering Oscillographic Recording
To trigger test measurement recording with DIGSI, click on Test in the left part of the window. Double click the
entry Test Wave Form in the list of the window.
Figure 3-21 Triggering oscillographic recording with DIGSI
®
Oscillographic recording is started immediately. During recording, a report is given in the left part of the status
bar. Bar segments additionally indicate the progress of the procedure.
The SIGRA or the Comtrade Viewer program is required to view and analyse the oscillographic data.