Fault Records; Viewing Fault Records - Siemens SIPROTEC 7SA6 Manual

Distance protection relay for all voltage levels

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Table of Contents

Control During Operation

Fault Records

From PC with

Waveform or RMS data is stored in the device and can be graphically represented on

a personal computer using DIGSI

settings associated with fault recording — such as duration and pre- and post-trigger

times — had been are set according to Chapter 6.

To view the fault recording data on a screen, one of the programs SIGRA 4 or Com-

trade Viewer (included with SIMATIC Manager) is needed. Do the following:

Double click on Oscillographic Records (Figure 7-26). The folders listed in the

right window show an overview of oscillographic records. The records are identified

with a network fault number, a fault record number, and the date and time.

By double clicking on an fault record in the list view in the right side of the window, one

of the above programs is opened, and the selected waveform data are loaded. (See

4, Operating Handbook, order no. E50417–H1176–C097, Subsection

Retrieval of fault records in DIGSI

SIGRA 4 provides support in the analysis of faults on the power system. The program

graphically prepares the data recorded during a fault, and calculates additional meas-

urement quantities, such as impedances or rms values.

The quantities can be represented in these views:

• Time signals

• Phasor diagrams

• Locus diagrams

Selection takes place using the menu bar ( View ), or clicking in the symbol bar above

the represented switching fields. Figure 7-27 shows all four views simultaneously.

4, together with the graphic program SIGRA 4. The

C53000-G1176-C156-2