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SIPROTEC 4 Devices

4-137SJ62 Manual

C53000-G1140-C121-1

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:

Analogue Curves with timebase (Time Signals),

Vector Diagrams,

Circle Diagrams, and

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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Siemens SIPROTEC 7SJ62 Instruction Manual

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