SIGRA_MANUAL_B1_EN.pdf

# Note the calculated variables are valid only if there

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NOTE The calculated variables are valid only if there is no status change (fault inception, tripping, gap in the measured value acquisition, etc.) within the measuring window!

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System Overview 1.4 Vector diagrams 24 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 Phase position Clicking the signal name zeros the phase position of this signal for the instant set by cursor 1. The values of all other signals are then aligned with this reference phase. The changes also affect the representation of the signals in the Circle Diagrams and Table views. Table In addition to the graphical representation, you can read the values of individual signals at defined instants in a Table and the current positions of cursor 1 and cursor 2 on the time axis (see chapter 3.2.1 and chapter 3.2.3). The structure of the table can be freely configured in the View Properties dialog. The type of displayed values, such as absolute value, imaginary part or phase, etc., can be changed at any time (see chapter 5.2). You can temporarily hide part or the whole of the on-screen display of the table (see chapter 3.2.3). Tooltip If you move the mouse pointer onto the arrow point of a diagram signal, a tooltip pops up which displays the signal name, value and phase position of the respective sampling instant. NOTE If a cursor is shifted in another view, the vector diagram changes to reflect this shift.
System Overview 1.5 Circle diagrams 25 SIPROTEC, SIGRA, Manual E50417-H1176-C070-B1, Edition 06.2017 1.5 Circle diagrams The Circle Diagrams view visualises the change of complex variables as a circle diagram over time. DIGRA007.tif Figure 1-8 Example of the representation of complex variables Trip zones Distance protection In addition to the positive-sequence impedances, circle diagrams can also display the trip zones of distance protection devices. The characteristics are stored in the *.RIO/*.XRIO file. Each trip zone is processed by SIGRA as an impedance signal and can be assigned to any number of dia- grams. Table In addition to the graphical representation, you can read the values of individual signals at defined instants in a Table and the current positions of cursor 1 and cursor 2 on the time axis (see chapter 3.2.1 and chapter 3.2.3). The structure of the table can be freely configured freely in the View Properties dialog. The type of displayed values, such as absolute value, imaginary part or phase, etc., can be changed at any time (see chapter 5.2). You can temporarily hide part or all ofthe on-screen display of the table (see chapter 3.2.3).

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