Overvoltage Protection With Zero-Sequence Voltage/Residual Voltage; Overview Of Functions; Structure Of The Function - Siemens 7SJ82 Manual

Protection and Automation Functions

6.24 Overvoltage Protection with Zero-Sequence Voltage/Residual Voltage

6.24 Overvoltage Protection with Zero-Sequence Voltage/Residual
Voltage

Overview of Functions

6.24.1
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

6.24.2
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
704
Structure/Embedding of the Function
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017