Functions
2.5 Under and over-voltage protection (optional)
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
97
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“
.
Summary of Contents for Siprotec 7VK61
Page 8: ...Preface SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 8 ...
Page 14: ...Contents SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 14 ...
Page 316: ...Literature SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 316 ...
Page 328: ...Glossary SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 328 ...