Table of Contents
Advertisement
Figure 2-21
Logic diagram of the overvoltage protection for phase voltage
Phase-phase overvoltage
The phase–phase overvoltage protection operates just like the phase–earth protection except that it detects
phase–to–phase voltages. Accordingly, phase–to–phase voltages which have exceeded one of the stage
thresholds Uph-ph> or Uph-ph>>are also indicated. Beyond this, Figure 2-21 applies in principle.
The phase–phase overvoltage protection can also be blocked via a binary input „>Uph-ph>(>) BLK".
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
2.5 Under and over-voltage protection (optional)
Functions
97
Advertisement
Table of Contents
