Siemens SIPROTEC 4 7VK61 Manual page 98

Functions
2.5 Under and over-voltage protection (optional)
[logikdia-ueberspgschutz-phasenspg-wlk-310702, 1, en_GB]
Figure 2-25
Phase-to-phase overvoltage
The phase-to-phase overvoltage protection operates just like the phase-to-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> (address 3712) or Uph-ph>> (address3714 are also indicated. Beyond this, applies in
principle. Figure
The phase-to-phase overvoltage protection can also be blocked via a binary input
98
Logic diagram of the overvoltage protection for phase voltage
2-25.
>Uph-ph>(>) BLK .
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018