SIGRA_MANUAL_B1_EN.pdf

If you have also activated the snapping cursor lines

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If you have also activated the Snapping Cursor Lines function, you can move the cursor to this event by jump- ing from one sampling instant to the next. Snap-in cursor lines With the menu command Options > Snapping Cursor Lines you can synchronize the movement of a cursor along the time axis with the sampling instants of the signals. If you have also activated the Magnetic Cursor Lines function, when the cursor approaches a status change or a status signal, it is attracted “magnetically” to this event and "snaps" to that point. NOTE The measuring window for calculation is always situated on the left of the reference point (cursor position). The length of the measuring window corresponds to one period of the rated frequency T N which is, for example, 20 ms at 50 Hz. The calculated variables are valid only if there is no status change (such as fault occurrence or disconnection) within the measuring window. NOTE For easier identification of the individual sampling instants, we recommend marking the signal you want to mea- sure via the Object Properties dialog. Each sampling instant is then marked by a symbol (triangle, circle, etc.) (3.2.4 Placing markers).
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Fault Records 3.2 Fault record settings 58 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 3.2.4 Placing markers When analyzing a fault record, it is often useful to highlight signals by means of graphical symbols. These mark- ers are placed at the signal sampling instants. This function makes it considerably easier to position the cursor at defined instants, particularly when evaluating circle diagrams (3.2.2 Assigning instants). To place the markers for analog signals in the Signal Properties dialog, proceed as follows: Double-click the signal in the diagram legend, or select the signal you want to mark in the diagram legend and open the corresponding dialog by choosing Object Properties from the context menu or selecting Edit > Object Properties from the menu bar; or select the Signal Properties dialog from the Assign Signals dialog. To do this, right-click the Signal name or Signal line column and select Properties from the context menu; dirgra048.tif Figure 3-3 Editing the signal properties of analog signals NOTE If both functions are deactivated, you can move the cursor continuously along the time axis. NOTE If you are only displaying a single signal in a diagram, select the Signal Properties dialog by double-clicking the signal name on the axis labeling.
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Fault Records 3.2 Fault record settings 59 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 select the symbols you want to mark from the Marker type list box. You can see the parameterized signal display in the preview section; confirm with Apply if you want to mark further signals. Select the next signal from the signal list and repeat the marking procedure; confirm your input with OK .
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  • Fall '19
  • Sigra

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