Stage Description
Logic of a Stage
[louxovpr-211212-01.tif, 1, en_US]
Figure 7-147
Logic Diagram of a Stage: Overvoltage Protection with Any Voltage
i
i
NOTE
If the function Overvoltage protection with any voltage is used in a 1-phase function group, the param-
eter
Measured value
is not visible.
Method of Measurement
The
Method of measurement
parameter allows you to define whether the function works with the funda-
mental component or the calculated RMS value.
•
Measurement of the
fundamental comp.
:
This method of measurement processes the sampled voltage values and filters out the fundamental
component numerically.
•
Measurement of the parameter value
RMS value
:
This method of measurement determines the voltage amplitude from the sampled values according to
the defining equation of the RMS value. Harmonics are included in the analysis.
Measured Value
The parameter
Measured value
allows you to select whether the stage uses a measured (directly
connected) voltage or a calculated phase-to-phase voltage.
If the function Overvoltage protection with any voltage is used in a 1-phase function group, the parameter
Measured value
is not visible.
7.15.3
Protection and Automation Functions
7.15 Overvoltage Protection with Any Voltage
800
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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