SIPROTEC 4 Devices
4-14 7SJ63 Manual
C53000-G1140-C120-1
4.3.3 Waveform Capture
As an option, SIPROTEC
®
4 devices can have waveform capturing that includes Se-
quence of Event Report (SER) for the elements in the device. Furthermore, the ele-
ments that are shown in the SER can be selected by the user.
The waveform and SER data are retrieved from the device memory by DIGSI
®
4 and
are saved as waveform capture in standard COMTRADE format.
The DIGRA
®
4 program is used to convert the oscillographic data into graphical rep-
resentations that can be used to analyze the fault or the event captured by the device.
DIGRA
®
4 calculates additional values from the waveform data, e.g. impedances and
rms values, and displays the captured and calculated values in:
q
Analogue Curves with timebase (Time Signals),
q
Vector Diagrams,
q
Circle Diagrams, and
q
Harmonic graphs.
digra009
Figure 4-8 DIGRA
®
4 Graphical Representations of the Waveform Data, View Examples
Details can be found in the DIGSI
®
4 instruction book, order number E50417-H1176-
C097, and the DIGRA
®
4 instruction book, order number E50417-H1176-C070.
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