Stage Description - Siemens 7SJ82 Manual

Stage Description

6.24.3
Logic of a Stage
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Figure 6-184
Measured Value, Method of Measurement
The device measures the residual voltage at the broken-delta winding. The measured voltage is converted to
the zero-sequence voltage V
sequence voltage V
defining equation.
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
Logic Diagram of an Overvoltage Protection with Zero-Sequence Voltage/Residual Voltage
Stage
. If the residual voltage is not available to the device as a measurand, the zero-
0
is calculated from the measured phase-to-ground voltages V
0
6.24 Overvoltage Protection with Zero-Sequence Voltage/Residual Voltage
Protection and Automation Functions
, V , and V using the
A B C
705