Overvoltage Protection with Zero-Sequence Voltage/Residual
Voltage
Overview of Functions
The Overvoltage protection with zero-sequence voltage/residual voltage function (ANSI 59N):
•
Detects ground faults in isolated or arc-suppression-coil-grounded systems
•
Determines the phase affected by the ground fault
•
Works with electrical machines to detect ground faults in the stator winding
Structure of the Function
The Overvoltage protection with zero-sequence voltage/residual voltage function is used in protection
function groups with voltage measurement.
The Overvoltage protection with zero-sequence voltage/residual voltage function comes factory-set with
1 stage. A maximum of 3 stages can be operated simultaneously in the function.
The stages have an identical structure.
[dwu0ovps-030211-01.tif, 2, en_US]
Figure 6-183 Structure/Embedding of the Function
6.24
6.24.1
6.24.2
Protection and Automation Functions
6.24 Overvoltage Protection with Zero-Sequence Voltage/Residual Voltage
704 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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