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Supervision Functions
9.3 Supervision of the Secondary System
Voltage Phase-Rotation Supervision
9.3.7
9.3.7.1
Overview of Functions
The Voltage phase-rotation supervision function monitors the phase sequence of the secondary-circuit
voltages by monitoring the sequence of the zero crossings (with same sign) of the voltages. This enables the
device to detect connections that were inverted during commissioning. The criterion for the check is the
setting of the Phase sequence parameter.
9.3.7.2
Structure of the Function
The Voltage phase-rotation supervision function is located in the Power-system data of each 3-phase
voltage measuring point.
[dwstrvrs-060611-01.tif, 3, en_US]
Figure 9-17
9.3.7.3
Function Description
Logic
[lovrsymm-100611-01.tif, 3, en_US]
Figure 9-18
1264
Structure/Embedding of the Function
Logic Diagram of the Voltage Phase-Rotation Supervision
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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