Alstom Reason RPV311, Техническое руководство

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Chapter 4
– Configuration
RPV311
78 RPV311-TM-EN-6
5 CURRENT CIRCUITS
Considering the input type configurations, it is possible to create current circuits with 1, 2, 3, or 4 elements.
For details about the each circuit type, see Chapter 14 Installation.
The phase sequences of the circuits supported by the equipment are ABC, BCA, CAB, CBA, BAC, and CBA
and may be customized by the user in the Equipment Setup, shown in Section 3.9. The default sequence is
ABC.
To add a new current circuit, select the C
URRENT
C
IRCUITS
section and fill in the following:
The I
DENTIFIER
text field allows user to enter a single code for the circuit being defined (maximum 12
characters). No editing allowed;
The W
IRING
scroll box allows selecting a number of elements used for measuring (1, 2, 3 or 4). No editing
allowed;
Selecting the 3-
PHASE CIRCUIT SYNTHESIS
check box, the 3-phase circuit synthesis is enabled. It is only
possible to select 3-phase circuit synthesis in a 1 element circuit (phase A, B, or C);
The I
NPUTS
scroll box allows user to select the inputs to which each measuring element is connected. No
editing allowed;
The N
OMINAL VALUE
text field allows user to enter a circuit rated current;
The F
REQUENCY REFERENCE
scroll box allows user to select a reference voltage circuit;
The R
ATIO
text fields allows user to enter ratio of power transformers for each input.
Once the circuit is created, it appears in the configuration interface menu. When selecting the circuit, a
screen shows the characteristics of the circuit selected, as shown in Figure 23 . It is possible to edit some
parameters, such as nominal value, frequency reference, and transformation ratio.
The frequency is calculated individually for each circuit as long as the magnitude of the current is over 10%
of the nominal magnitude configured in the Current window of the chosen Voltage Circuit. The frequency
track occurs within the range of Nominal Frequency ±5Hz.